A deformation-resistant reinforced stainless steel inner liner

By designing limiting components and a magnetic adsorption structure, the problem of deformation of stainless steel thermos cups caused by impacts and friction is solved, achieving anti-deformation and sealing of the inner liner, extending service life and improving convenience.

CN224572519UActive Publication Date: 2026-07-31YONGKANG YOUBO IND & TRADE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YONGKANG YOUBO IND & TRADE CO LTD
Filing Date
2025-10-14
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing stainless steel thermos cups are prone to dents on the side walls due to drops and impacts during daily use, affecting their appearance and capacity. Furthermore, repeated screwing of the cup mouth and lid can lead to a decrease in sealing performance.

Method used

It adopts a limiting component and a magnetic adsorption structure. The combination of the arc plate and the magnetic adsorption fixing rod with the insertion hole ensures a stable connection between the stainless steel inner liner and the outer shell, preventing deformation from drops and impacts. The cup mouth is supported by a baffle and a conical plate to avoid long-term friction deformation and ensure airtightness.

Benefits of technology

It effectively prevents the stainless steel inner liner from deforming due to impact and friction, extends its service life, maintains its sealing performance, facilitates disassembly and cleaning, and improves ease of use and practicality.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This utility model relates to the field of stainless steel inner liner technology, and discloses a deformation-resistant and reinforced stainless steel inner liner, including an outer shell, with a stainless steel inner liner disposed inside the outer shell, a sealing cap at the top of the connecting shell, and a limiting component for assembling the stainless steel inner liner and the outer shell at the side end of the connecting shell. The stainless steel inner liner is inserted into the outer shell and is attracted to a magnet on the connecting shell by the arc-shaped plate of the limiting component. A fixing rod drives an insertion rod to insert into the insertion hole of the cup mouth plate. A spring ensures the insertion rod is firmly locked. The outer shell and inner liner cooperate to prevent deformation. The outer shell can withstand external impacts and protect the inner liner. The connecting shell, in conjunction with the sealing cap, avoids long-term friction deformation of the cup mouth, ensuring sealing. Disassembly only requires pulling the fixing rod to unlock and separate the components, facilitating cleaning and maintenance. This solves the problems of easy denting of the cup body and poor sealing of the cup mouth in traditional insulated cups, and also extends the service life, combining practicality and convenience.
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Description

Technical Field

[0001] This utility model relates to the field of stainless steel inner liner technology, specifically to a stainless steel inner liner with anti-deformation reinforcement. Background Technology

[0002] Stainless steel insulated mugs are commonly used portable insulated containers. Made primarily of stainless steel, they utilize a double-walled vacuum structure to achieve long-lasting heat and cold retention, maintaining hot water temperature for 6-12 hours and cold water temperature for 4-8 hours. They are widely used in homes, offices, and outdoors. The core component is the stainless steel insulated inner liner, typically made of 304 or 316 food-grade stainless steel. 304 stainless steel is rust-resistant and highly safe, meeting daily drinking water needs; 316 stainless steel is more corrosion-resistant, suitable for acidic beverages, and ideal for applications requiring higher material quality. The vacuum layer between the inner liner and the outer body blocks heat conduction and convection, reducing heat loss and playing a crucial role in insulation performance. Some inner liners undergo electrolytic polishing or coating treatment to improve smoothness, prevent scale buildup, and avoid material reactions with beverages, ensuring safety. This combination ensures both durability and efficient heat retention.

[0003] However, there are obvious drawbacks: First, the cup body is prone to dents on the side walls due to drops and impacts during daily use, affecting the appearance and capacity; second, the repeated screwing of the cup mouth and lid can cause deformation of the cup mouth edge due to long-term friction, resulting in a decrease in sealing performance. Therefore, a stainless steel inner liner that is resistant to deformation and reinforced is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a reinforced stainless steel inner liner that is resistant to deformation, and to solve the following problems in the prior art: firstly, the cup body is easily dented due to drops and impacts during daily use, affecting its appearance and capacity; secondly, the cup mouth and lid are repeatedly screwed together, and long-term friction can easily cause deformation of the cup mouth edge, resulting in a decrease in sealing performance.

[0005] This utility model provides the following technical solution: a stainless steel inner liner with anti-deformation reinforcement, including an outer shell, a connecting shell fixedly connected to the top of the outer shell, a stainless steel inner liner disposed inside the outer shell, a sealing cap disposed at the top of the connecting shell, and a limiting component for assembling the stainless steel inner liner and the outer shell disposed at the side end of the connecting shell.

[0006] As a preferred embodiment of the above technical solution, the interior of the outer shell is provided with a number of mounting slots, and the inner side of each mounting slot is provided with a sliding groove. The inner side of the connecting shell is fixedly connected with a number of baffles for supporting the stainless steel inner liner.

[0007] As a preferred embodiment of the above technical solution, the top of the connecting shell is provided with two sets of grooves, and the outer side of the connecting shell is fixedly connected with a plug box corresponding to the position of each groove. Each plug box has a circular groove inside, and a magnet is fixedly connected to the outer side of the connecting shell.

[0008] As a preferred embodiment of the above technical solution, the stainless steel inner liner includes a cup body, a plurality of conical plates are fixedly connected to the side end of the cup body, a slider is fixedly connected to the side end of each conical plate, a cup mouth is fixedly connected to the top end of the cup body, the inside of the cup mouth is threaded, a cup rim is fixedly connected to the top end of the cup mouth, and two sets of insert plates are fixedly connected to the side end of the cup mouth, each set of insert plates is provided with an insertion hole on its side end.

[0009] As a preferred embodiment of the above technical solution, each of the conical plates is inserted into each mounting groove, each of the sliders is slidably connected inside each sliding groove, the cup body is inserted into the outer shell, the cup mouth is inserted into the connecting shell, and the outer wall of the cup mouth is in contact with the baffle.

[0010] As a preferred embodiment of the above technical solution, each of the insert plates is inserted into each insert box, the cup edge is located at the top of the connecting shell, the bottom end of the cup edge is fixedly connected to a second magnet, the top end of the connecting shell is fixedly connected to a third magnet, and the second magnet and the third magnet attract each other.

[0011] As a preferred embodiment of the above technical solution, the limiting component includes an arc-shaped plate made of iron. The arc-shaped plate can be adsorbed onto the side end of a magnet. Two fixing rods are fixedly connected to the side end of the arc-shaped plate. Each fixing rod is inserted into a circular groove. A circular plate is fixedly connected to the side end of each fixing rod. A plug rod is fixedly connected to the side end of each circular plate. Each plug rod is inserted into a socket. A spring is sleeved on the outer end of each fixing rod. One end of each spring is fixedly connected to the inner side end of each circular groove, and the other end of each spring is fixedly connected to the side end of the circular plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: When this utility model's anti-deformation reinforced stainless steel inner liner is in operation, the stainless steel inner liner is first installed into the outer shell. It is then attracted to the magnet on the connecting shell by the arc-shaped plate of the limiting component. The fixing rod drives the insertion rod to insert into the insertion hole of the cup mouth plate. The spring ensures that the insertion rod is locked firmly. The outer shell and the inner liner cooperate to prevent deformation. The outer shell can withstand external impacts and protect the inner liner. The connecting shell, together with the sealing cap, avoids long-term friction deformation of the cup mouth and ensures sealing. When disassembling, simply pull the fixing rod to unlock and separate the parts for easy cleaning and maintenance. It solves the problems of easy denting of the cup body and poor sealing of the cup mouth in traditional thermos cups, and also extends the service life, taking into account both practicality and convenience. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a reinforced stainless steel inner liner designed to prevent deformation; Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A in the diagram; Figure 3 A schematic diagram of a three-dimensional structure of a deformation-resistant and reinforced stainless steel inner liner. Figure 1 ; Figure 4 A schematic diagram of a three-dimensional structure of a deformation-resistant and reinforced stainless steel inner liner. Figure 2 .

[0014] In the diagram: 1. Outer shell; 101. Connecting shell; 102. Mounting groove; 103. Slide groove; 104. Baffle; 105. Groove; 106. Insert box; 1061. Circular groove; 107. Magnet one; 2. Stainless steel inner liner; 201. Cup body; 202. Conical plate; 203. Slider; 204. Cup mouth; 205. Cup rim; 206. Insert plate; 207. Insertion hole; 208. Magnet two; 209. Magnet three; 3. Limiting component; 301. Arc plate; 302. Fixing rod; 303. Circular plate; 304. Insert rod; 305. Spring. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] like Figures 1-4 As shown, this utility model provides a technical solution: a deformation-resistant and reinforced stainless steel inner liner, including an outer shell 1, a connecting shell 101 fixedly connected to the top of the outer shell 1, a stainless steel inner liner 2 disposed inside the outer shell 1, a sealing cap disposed at the top of the connecting shell 101, and a limiting component 3 for assembling the stainless steel inner liner 2 and the outer shell 1 disposed on the side end of the connecting shell 101. When the deformation-resistant and reinforced stainless steel inner liner is in operation, the stainless steel inner liner 2 is first inserted into the outer shell 1, and then attracted to the magnet 107 of the connecting shell 101 by the arc-shaped plate 301 of the limiting component 3, and the fixing rod... 302 drives the insertion rod 304 to insert into the insertion hole 207 of the cup mouth 204 and the insertion plate 206. The spring 305 ensures that the insertion rod 304 is locked firmly. The outer shell 1 and the inner liner cooperate to prevent deformation. The outer shell 1 can resist external impact and protect the inner liner. The connecting shell 101 cooperates with the sealing cap to avoid the cup mouth 204 from being deformed by long-term screwing and friction, thus ensuring the sealing performance. When disassembling, simply pull the fixing rod 302 to unlock and separate the parts, which is convenient for cleaning and maintenance. It solves the problems of easy denting of the cup body and poor sealing of the cup mouth of traditional thermos cups, and also extends the service life, taking into account both practicality and convenience.

[0017] As one implementation method in this embodiment, such as Figure 4As shown, the interior of the outer shell 1 is provided with several mounting slots 102, and the inner side of each mounting slot 102 is provided with a sliding groove 103. Several baffles 104 for supporting the stainless steel inner liner 2 are fixedly connected to the inner side of the connecting shell 101. Two sets of grooves 105 are provided on the top of the connecting shell 101. Insert boxes 106 are fixedly connected to the outer side of the connecting shell 101 corresponding to the position of each groove 105. Each insert box 106 is provided with a circular groove 1061 inside. A magnet 107 is fixedly connected to the outer side of the connecting shell 101. In practice, the outer wall of the cup mouth 204 is in close contact with the several baffles 104 fixed to the inner side of the connecting shell 101. The baffles 104 provide support from the outer periphery of the cup mouth 204 to prevent the cup mouth 204 from deforming after long-term friction with the sealing cap, thus ensuring the roundness and sealing of the cup mouth 204.

[0018] As one implementation method in this embodiment, such as Figure 1 , Figure 2 and Figure 3As shown, the stainless steel inner liner 2 includes a cup body 201. Several conical plates 202 are fixedly connected to the side of the cup body 201. A slider 203 is fixedly connected to the side of each conical plate 202. A cup mouth 204 is fixedly connected to the top of the cup body 201. The inside of the cup mouth 204 is threaded. A cup rim 205 is fixedly connected to the top of the cup mouth 204. Two sets of insert plates 206 are fixedly connected to the side of the cup mouth 204. Each set of insert plates 206 has an insertion hole 207 on its side. Each conical plate 202 is inserted into each mounting groove 102. Each slider 203 is slidably connected inside each groove 103. The cup body 201 is inserted into the outer shell 1, and the cup mouth 204 is inserted into the connecting shell 101. The outer wall of the cup mouth 204 is in contact with the baffle 104. Each insert plate 206 is inserted into each insert box 106. The cup rim 205 is located at the top of the connecting shell 101. A magnet 208 is fixedly connected to the bottom of the cup rim 205, and a magnet 309 is fixedly connected to the top of the connecting shell 101. Magnets 208 and 309 attract each other. In practice, the cup body 201 of the stainless steel inner liner 2 is aligned with the opening of the outer shell 1 and inserted. Several triangular cone plates 202 on the side of the cup body 201 are simultaneously inserted into the corresponding mounting grooves 102 inside the outer shell 1. The sliders 203 on the side of the cone plates 202 slide along the sliding grooves 103 inside the mounting grooves 102. The sliding grooves 103 provide guidance for the sliders 203, ensuring that the cup body 201 is installed vertically and stably into the outer shell 1, avoiding damage to the inner liner or outer shell 1 due to misalignment during assembly. Meanwhile, the triangular cone plate 202 can enhance the structural strength of the side wall of the cup body 201. When the outer shell 1 is subjected to impact, the cone plate 202 can disperse the impact force and reduce the dent of the side wall of the cup body 201, solving the problem of easy denting of traditional inner liner. After the cup body 201 is fully inserted into the outer shell 1, the cup mouth 204 at the top of the cup body 201 is inserted into the interior of the connecting shell 101. The outer wall of the cup mouth 204 is in close contact with several baffles 104 fixed to the inner side of the connecting shell 101. The baffles 104 provide support from the outer periphery of the cup mouth 204, preventing the cup mouth 204 from deforming after long-term friction with the sealing cap, and ensuring the roundness and sealing of the cup mouth 204. Meanwhile, the cup rim 205 at the top of the cup mouth 204 rests on the top of the connecting shell 101, the insert plate 206 is inserted into the groove 105 and the insert box 106, the magnet 208 at the bottom of the cup rim 205 and the magnet 209 at the top of the connecting shell 101 attract each other, initially fixing the position of the cup mouth 204 and the connecting shell 101, and preventing the cup mouth 204 from shifting during assembly.

[0019] As one implementation method in this embodiment, such as Figure 1 , Figure 2 and Figure 4As shown, the limiting component 3 includes an arc-shaped plate 301 made of iron. The arc-shaped plate 301 can be attracted to the side of the magnet 107. Two fixing rods 302 are fixedly connected to the side of the arc-shaped plate 301. Each fixing rod 302 is inserted into each circular groove 1061. A circular plate 303 is fixedly connected to the side of each fixing rod 302. An insert rod 304 is fixedly connected to the side of each circular plate 303. Each insert rod 304 is inserted into each insertion hole 207. A spring 30 is sleeved on the outer end of each fixing rod 302. 5. One end of each spring 305 is fixedly connected to the inner side of each circular groove 1061, and the other end of each spring 305 is fixedly connected to the side of the circular plate 303. In practice, when the anti-deformation reinforced stainless steel inner liner is disassembled, the arc plate 301 is pulled outward first, and the fixing rod 302 drives the circular plate 303 to compress the spring 305, and the insertion rod 304 is pulled out from the insertion hole 207 of the cup mouth 204 insertion plate 206 to release the locking of the limiting component 3. No tools are required, and the problem of traditional bolt stripping can be avoided, ensuring that the limiting component 3 can be reused. Next, pull the cup rim 205 upwards to separate the magnet 208 at the bottom of the cup rim 205 from the magnet 209 at the top of the connecting shell 101. The cup mouth 204 is then pulled out. The magnetic attraction force is moderate, which ensures that the assembly is stable and easy to separate, and also prevents the cup mouth 204 from being deformed due to scratches. Finally, continue to pull the cup body 201 so that the slider 203 of the conical plate 202 on the side of the cup body 201 slides vertically along the groove 103 of the mounting groove 102 of the outer shell 1 and is removed. The groove 103 guides and avoids jamming and scratches. The triangular conical plate 202 has high strength and is not easily deformed, ensuring the integrity of the parts. The whole process can be completed quickly by one person, which is convenient for cleaning or individual replacement of parts and extends the service life of the thermos.

[0020] Working Principle: During assembly and use of this anti-deformation reinforced stainless steel inner liner, the stainless steel inner liner 2 and outer shell 1 are precisely aligned. The cup body 201 of the stainless steel inner liner 2 is aligned with the opening of the outer shell 1 and inserted. Simultaneously, several triangular cone-shaped plates 202 on the side of the cup body 201 are inserted into the corresponding mounting grooves 102 inside the outer shell 1. The sliders 203 on the side of the cone-shaped plates 202 slide along the grooves 103 inside the mounting grooves 102. The grooves 103 guide the sliders 203, ensuring that the cup body 201 is vertically and stably installed into the outer shell 1, preventing damage to the inner liner or outer shell 1 due to misalignment during assembly. Simultaneously, the triangular cone-shaped plates 202 enhance the structural strength of the sidewalls of the cup body 201. When the outer shell 1 is subjected to impact, the cone-shaped plates 202 disperse the impact force, reducing dents in the sidewalls of the cup body 201 and solving the problem of easy denting in traditional inner liners.

[0021] After the cup body 201 is fully inserted into the outer shell 1, the cup opening 204 at the top of the cup body 201 is inserted into the interior of the connecting shell 101. The outer wall of the cup opening 204 is in close contact with several baffles 104 fixed to the inner side of the connecting shell 101. The baffles 104 provide support from the outer periphery of the cup opening 204, preventing deformation of the cup opening 204 after long-term friction with the sealing cap, thus ensuring the roundness and sealing performance of the cup opening 204. At the same time, the cup rim 205 at the top of the cup opening 204 rests on the top of the connecting shell 101, and the insert plate 206 is inserted into the groove 105 and the insert box 106. The magnet 208 at the bottom of the cup rim 205 attracts the magnet 209 at the top of the connecting shell 101, initially fixing the position of the cup opening 204 and the connecting shell 101, preventing the cup opening 204 from shifting during assembly.

[0022] Next, the overall reinforcement is completed by the limiting component 3. The arc-shaped plate 301 of the limiting component 3 is attracted to the magnet 107 on the outer side of the connecting shell 101, achieving the initial positioning of the arc-shaped plate 301. At this time, the cooperation between the insertion rod 304 and the insertion hole 207 locks the insertion plate 206 in the insertion box 106, thereby fixing the relative position of the cup mouth 204 and the connecting shell 101. At the same time, the cooperation between the arc-shaped plate 301 and the magnet 107 and the elasticity of the spring 305 ensure that the insertion rod 304 is always tightly inserted into the insertion hole 207, achieving double fixation and preventing the insertion rod 304 from falling off due to vibration during long-term use, ensuring a firm limiting position. In use, the sealing cap is screwed into the cup mouth 204 through the internal threads of the cup mouth 204. With the support of the baffle 104 and the fixation of the limiting component 3, the cup mouth 204 will not deform due to repeated screwing and friction, ensuring the sealing performance of the sealing cap and the cup mouth 204, and solving the problem of reduced sealing caused by deformation of the traditional cup mouth. The conical plate 202 and baffle 104 between the outer shell 1 and the inner liner form a double anti-deformation protection, which not only enhances the strength of the inner liner itself, but also reduces the damage of external forces to the cup body 201 through the coordinated support of the outer shell 1 and the inner liner, thus extending the service life of the thermos cup, while ensuring that the heat preservation performance is not affected by deformation.

[0023] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A deformation-proof reinforced stainless steel liner comprising a shell (1), characterized in that: The top of the outer shell (1) is fixedly connected to a connecting shell (101), the interior of the outer shell (1) is provided with a stainless steel inner liner (2), the top of the connecting shell (101) is provided with a sealing cap, and the side end of the connecting shell (101) is provided with a limiting component (3) for assembling the stainless steel inner liner (2) and the outer shell (1).

2. The deformation-resistant reinforced stainless steel liner of claim 1, wherein: The outer shell (1) has several mounting slots (102) inside, and each mounting slot (102) has a sliding groove (103) on its inner side. The inner side of the connecting shell (101) is fixedly connected to several baffles (104) for supporting the stainless steel inner liner (2).

3. The deformation resistant reinforced stainless steel liner of claim 2, wherein: The top of the connecting shell (101) has two sets of grooves (105). The outer side of the connecting shell (101) is fixedly connected with a plug box (106) corresponding to the position of each groove (105). Each plug box (106) has a circular groove (1061) inside. The outer side of the connecting shell (101) is fixedly connected with a magnet (107).

4. The deformation-resistant reinforced stainless steel liner of claim 3, wherein: The stainless steel inner liner (2) includes a cup body (201), a plurality of conical plates (202) are fixedly connected to the side end of the cup body (201), a slider (203) is fixedly connected to the side end of each conical plate (202), a cup mouth (204) is fixedly connected to the top end of the cup body (201), the inside of the cup mouth (204) is threaded, a cup rim (205) is fixedly connected to the top end of the cup mouth (204), and two sets of insert plates (206) are fixedly connected to the side end of the cup mouth (204), each set of insert plates (206) is provided with an insertion hole (207) on the side end.

5. The deformation resistant reinforced stainless steel liner of claim 4, wherein: Each of the conical plates (202) is inserted into each mounting groove (102), each of the sliders (203) is slidably connected to the inside of each groove (103), the cup body (201) is inserted into the outer shell (1), the cup mouth (204) is inserted into the connecting shell (101), and the outer wall of the cup mouth (204) is in contact with the baffle (104).

6. The deformation resistant reinforced stainless steel liner of claim 5, wherein: Each of the insert plates (206) is inserted into each insert box (106), the cup edge (205) is located at the top of the connecting shell (101), the bottom end of the cup edge (205) is fixedly connected to a magnet two (208), the top end of the connecting shell (101) is fixedly connected to a magnet three (209), and the magnet two (208) and the magnet three (209) attract each other.

7. The deformation resistant reinforced stainless steel liner of claim 6, wherein: The limiting component (3) includes an arc plate (301), which is made of iron. The arc plate (301) can be attracted to the side of the magnet (107). Two fixing rods (302) are fixedly connected to the side of the arc plate (301). Each fixing rod (302) is inserted into each circular groove (1061). A circular plate (303) is fixedly connected to the side of each fixing rod (302). A plug rod (304) is fixedly connected to the side of each circular plate (303). Each plug rod (304) is inserted into each socket (207). A spring (305) is sleeved on the outer end of each fixing rod (302). One end of each spring (305) is fixedly connected to the inner side of each circular groove (1061). The other end of each spring (305) is fixedly connected to the side of the circular plate (303).