Container

Abstract

The utility model discloses a container which comprises an outer shell and an inner container arranged in the outer shell, the inner container and the outer shell are made of different metal materials, the top end of the outer shell is fixedly connected with the top end of the inner container, and the container further comprises a metal composite ring used for connecting the outer shell and the inner end. The metal composite ring comprises an inner metal ring and an outer metal ring, the inner metal ring comprises a first annular welding part and a first annular connecting part, the outer metal ring comprises a second annular welding part and a second annular connecting part, and the first welding part and the second welding part are located at the two opposite ends of the metal composite ring; the first connecting part and the second connecting part are located between the first welding part and the second welding part and are connected in a sleeved mode, and one of the inner metal ring and the outer metal ring is made of the same material as the inner container and is connected with the inner container through one of the first welding part and the second welding part in a welded mode. And the other one of the inner metal ring and the outer metal ring is made of the same material as the shell, and is welded and connected with the same material of the shell through the other one of the first welding part and the second welding part. According to the utility model, the production efficiency and the product quality can be improved.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation container technology, specifically to a container with thermal insulation properties that is easy to manufacture. Background Technology

[0002] Insulated containers typically consist of an inner liner and an outer shell, which are usually made of different metals (the inner liner is generally made of titanium, and the outer shell is generally made of steel). A key challenge in the manufacturing process is effectively welding the steel and titanium materials together (ensuring both strength and sealing performance).

[0003] In the current production process, titanium steel composite rings are usually used to weld the titanium inner liner and the metal outer shell. However, since the titanium steel composite ring has two layers of metal, and the overall thickness of the composite ring is relatively thin due to the limitations of the usage environment, when the composite ring is welded to the two metals separately, the different melting points of the two metals will affect the other metal when welding one metal, which can easily cause air leakage and non-vacuum problems.

[0004] Therefore, how to design a container that is convenient for production while ensuring a good sealing effect for the insulated container is an urgent problem to be solved. Utility Model Content

[0005] This utility model aims to solve one of the technical problems in related technologies to a certain extent. Therefore, this utility model provides a container that is easy to manufacture and has a better sealing effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a container, comprising an outer shell and an inner liner disposed within the outer shell, wherein the inner liner and the outer shell are made of different metal materials, the top end of the outer shell and the top end of the inner liner are fixedly connected, the container further comprising a metal composite ring for connecting the outer shell and the inner liner, the metal composite ring comprising an inner metal ring and an outer metal ring, the inner metal ring comprising an annular first welding portion and an annular first connecting portion, the outer metal ring comprising an annular second welding portion and an annular second connecting portion, the first welding portion and the second welding portion being located at opposite ends of the metal composite ring, the first connecting portion and the second connecting portion being located between the first welding portion and the second welding portion and sleeved together, one of the inner metal ring and the outer metal ring being made of the same material as the inner liner and welded to the inner liner of the same material through one of the first welding portion and the second welding portion, the other of the inner metal ring and the outer metal ring being made of the same material as the outer shell and welded to the outer shell of the same material through the other of the first welding portion and the second welding portion.

[0007] In this technical solution, the outer shell and the inner liner are fixedly connected by a metal composite ring. During use, the welded connection parts (outer shell and second welded part, and inner liner and first welded part) are single-layer metal welded to each other, and the two single-layer metals are generally made of the same material. This avoids the risk of weld burn-through that may be caused by two different metals on the metal ring during welding. Moreover, by setting the first connecting part and the second connecting part, the connection between the inner metal ring and the outer metal ring is more reliable.

[0008] Furthermore, a welding ring is formed at the top of the inner liner, the metal composite ring is fitted on the outside of the inner liner, the outer side of the welding ring is attached to and welded to the inner side of the second welding part, and the top of the outer shell abuts against and is welded to the end of the first welding part.

[0009] Furthermore, a vacuum cavity is formed between the metal composite ring, the outer shell, and the inner liner.

[0010] Furthermore, the radial thickness of the first welded portion is greater than the radial thickness of the first connecting portion, and the radial thickness of the second welded portion is greater than the radial thickness of the second connecting portion. Increasing the thickness of the welded portion is more conducive to welding and ensures welding quality.

[0011] Furthermore, the inner surface of the first welded portion is flush with the inner surface of the first connecting portion, and the outer surface of the first welded portion protrudes radially outward from the outer surface of the first connecting portion. Similarly, the outer surface of the second welded portion is flush with the outer surface of the second connecting portion, and the inner surface of the second welded portion protrudes radially inward from the inner surface of the second connecting portion. This improves the overall appearance of the metal ring, thereby enhancing the appearance of the container.

[0012] Furthermore, one end of the first connecting portion abuts against the portion of the second welding portion that protrudes from the second connecting portion, and one end of the second connecting portion abuts against the portion of the first welding portion that protrudes from the first connecting portion.

[0013] Furthermore, the outer metal ring and the inner liner are made of the same material, titanium, while the inner metal ring and the outer shell are made of the same material, copper, aluminum, or stainless steel.

[0014] Furthermore, the first connecting part and the second connecting part are heat-rolled and bonded together to form an integral structure.

[0015] Furthermore, the ends of the first welded portion and / or the ends of the second welded portion are provided with beveled edges.

[0016] Furthermore, the radial thickness of the first welded portion and the second welded portion is between 0.5 and 2 mm.

[0017] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but this is not intended to limit the technical solution of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is a front sectional view of a container (thermos cup) according to one embodiment of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a structural diagram showing the welded connection between a metal sealing ring and a container according to one embodiment of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0023] Figure 5 for Figure 3 Enlarged view at point C;

[0024] Figure 6.1 This is a structural diagram of the initial state of the outer and inner metal rings during the production process.

[0025] Figure 6.2 for Figure 6.1 A schematic diagram showing the inner and outer metal rings interlocking to form a metal composite ring;

[0026] Figure 6.3 for Figure 6.2 Schematic diagram of the hot roll forming of the metal composite ring;

[0027] Figure 6.4 This is a schematic diagram of the metal composite ring structure of one embodiment of the present invention.

[0028] in,

[0029] 11. Outer shell; 111. Air extraction port; 12. Inner liner; 121. Welding ring; 13. Vacuum chamber;

[0030] 20. Metal composite ring; 21. Inner metal ring; 211. First welding part; 212. First connecting part; 22. Outer metal ring; 221. Second welding part; 222. Second connecting part; 23. Bevel; 24. First welding point; 25. Second welding point. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these 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 are intended to explain this utility model and should not be construed as limiting it.

[0032] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0033] One embodiment of this utility model discloses a container, see attached drawing. Figures 1 to 5 The container includes an outer shell 11 and an inner liner 12 disposed within the outer shell 11. The inner liner 12 and the outer shell 11 are made of different metal materials. The top end of the outer shell 11 and the top end of the inner liner 12 are fixedly connected. The container also includes a metal composite ring 20 for connecting the outer shell 11 and the inner end. The metal composite ring 20 includes an inner metal ring 21 and an outer metal ring 22. The inner metal ring 21 includes an annular first welding portion 211 and an annular first connecting portion 212. The outer metal ring 22 includes an annular second welding portion 221 and an annular second connecting portion 222. The first welding portion 211 and the second welding portion 222... 21 is located at opposite ends of the metal composite ring 20. The first connecting part 212 and the second connecting part 222 are located between the first welding part 211 and the second welding part 221 and are sleeved together. One of the inner metal ring 21 and the outer metal ring 22 is made of the same material as the inner liner 12 and is welded to the inner liner 12 of the same material through one of the first welding part 211 and the second welding part 221. The other of the inner metal ring 21 and the outer metal ring 22 is made of the same material as the outer shell 11 and is welded to the outer shell 11 of the same material through the other of the first welding part 211 and the second welding part 221.

[0034] The container in this embodiment can be a cup or tableware with heat preservation effect, etc. The following uses a thermos cup to describe this utility model in detail.

[0035] In this embodiment, the outer shell 11 and inner liner 12 of the thermos are generally made of different metal materials. The inner cavity of the inner liner 12 is generally used to hold drinking water. In actual design, the inner liner 12 can be made of titanium. Titanium has advantages such as corrosion resistance, lightweight and high strength, good heat retention, high biocompatibility, aesthetic appeal, durability, and environmental recyclability. This can prevent the inner liner 12 from reacting with the liquid for a long time and producing harmful substances, thus improving the hygiene and health of the inner liner 12. The outer shell 11 is generally made of a different metal layer than titanium (generally copper, aluminum, or stainless steel), which can reduce the use of titanium material and thus reduce the manufacturing cost of the container. Of course, in actual production, a plastic layer that is easy to hold or aesthetically pleasing can also be added to the outside of the outer shell 11.

[0036] In this embodiment, the top end of the inner liner 12 and the top end of the outer shell 11 are connected by a metal composite ring 20. The metal composite ring 20 includes an inner metal ring 21 and an outer metal ring 22. In this embodiment, the inner metal ring 21 and the outer metal ring 22 are composited (not integrally composited) through a first connecting portion 212 and a second connecting portion 222. The composite position (the first connecting portion 212 and the second connecting portion 222) is located between the welding positions (the first welding portion 211 and the second welding portion 221), as shown in the attached figure. Figure 3 , 6.4 As shown, the first welding part 211 and the second welding part 221 both form a single-layer metal structure at both ends. When they are welded to the inner liner 12 and the outer shell 11, the welding of the single-layer metal is achieved. In this way, the risk of weld burn-through that may be caused by two different metals on the metal ring can be avoided during welding (because the welding melting points of different metals are different). Moreover, by setting the first connecting part 212 and the second connecting part 222 that are nested together, the connection between the inner metal ring 21 and the outer metal ring 22 is more reliable.

[0037] In practical application, the first welding part 211 can be connected to the outer shell 11, and the second welding part 221 can be connected to the inner liner 12. Alternatively, the first welding part 211 can be welded to the inner liner 21, and the second welding part 221 can be connected to the outer shell 11. The key is to ensure that the welding parts connected to the outer shell 11 are made of the same material as the outer shell 11, and the welding parts connected to the inner liner 12 are made of the same material as the inner liner 12. Since materials of the same metal have the same welding melting point, this improves welding quality and strength. This approach allows for wider application adaptability.

[0038] As one embodiment of this utility model, as shown in the appendix Figure 3As shown, a welding ring 121 is formed at the top of the inner liner 12, and the metal composite ring 20 is fitted on the outside of the inner liner 12. The outer side of the welding ring 121 is attached to and welded to the inner side of the second welding part 221 to form a second welding point 25. The top of the outer shell 11 abuts against and is welded to the end of the first welding part 211 to form a first welding point 24.

[0039] In this embodiment, the installation method in which the welding ring 121 formed at the end of the inner liner 12 is in close contact with the second welding part 221 can improve the strength of the inner liner 12 on the one hand, and improve the stability of the installation of the inner liner 12 and the metal composite ring 20 through the surface contact assembly method. During the welding process, the structure in which the welding ring 121 and the second welding part 221 are interlocked can also reduce the risk of deformation caused by welding and improve the roundness of the opening of the thermos cup.

[0040] In this embodiment, the outer shell 11 and the second welding part 221 are welded by butt welding, so that the outer wall of the metal composite ring 20 is flush with the outer wall of the outer shell 11. In this way, the metal composite ring 20 itself can be used as part of the outer shell 11, which can reduce the amount of outer shell 11 used, reduce material usage, and reduce production costs.

[0041] In one embodiment of this utility model, a vacuum cavity 13 is formed between the metal composite ring 20, the outer shell 11, and the inner liner 12. See attached drawing. Figure 1 , 2 An air extraction hole 111 can be provided at the bottom of the outer shell 11. During the production process, the air extraction hole 111 is used to draw air from the cavity between the inner liner 12 and the outer shell 11 to form a vacuum chamber 13. After the air is extracted, the air extraction hole 111 is sealed to form a vacuum chamber 13, which can effectively improve the heat preservation effect.

[0042] As one embodiment of this utility model, see the appendix. Figure 6.4 The radial thickness of the first welded portion 211 is greater than the radial thickness of the first connecting portion 212, and the radial thickness of the second welded portion 221 is greater than the radial thickness of the second connecting portion 222.

[0043] In this embodiment, the first welding part 211 and the second welding part 221 are relatively thick. During production, the outer wall of the inner liner 12 can be set to an inwardly concave structure at the part opposite to the metal composite ring 20. This can increase the gap between the inner liner 12 and the metal composite ring 20, thereby allowing for a larger thickness of the metal composite ring 20, improving strength and welding effect.

[0044] As one embodiment of this utility model, see the appendix. Figure 6.4The inner side of the first welding part 211 is flush with the inner side of the first connecting part 212, and the outer side of the first welding part 211 protrudes radially outward from the outer side of the first connecting part 212. The outer side of the second welding part 221 is flush with the outer side of the second connecting part 222, and the inner side of the second welding part 221 protrudes radially inward from the inner side of the second connecting part 222.

[0045] In this embodiment, the inner sides of the first welding portion 211 and the first connecting portion 212 in the inner metal ring 21 are flush, and the outer side of the first welding portion 211 protrudes beyond the outer side of the first connecting portion 212, thus achieving a structure where the thickness of the first welding portion 211 is greater than that of the first connecting portion 212. This creates a stepped structure between the first welding portion 211 and the first connecting portion 212. Similarly, a step is also formed between the second welding portion 221 and the first connecting portion 212. The two steps are in opposite directions. Thus, when the first connecting portion 212 and the second connecting portion 222 are interlocked, the inner metal ring 21 and the outer metal ring 22 are in a mutually fitting structure, which can improve the overall appearance of the metal ring and thus improve the appearance of the thermos cup.

[0046] It is conceivable that, in actual design, to further improve the integrity of the metal composite ring 20, the outer surface of the first welding part 211 and the outer surface of the outer metal ring 22 can be made flush, and the inner surface of the second welding part 221 and the inner surface of the inner metal ring 21 can be made flush, as shown in the attached figure. Figure 6.4 As described above, the metal composite ring 20 is integrally formed into a cylindrical structure with both inner and outer sides flush, which facilitates production.

[0047] As one embodiment of this utility model, see the appendix. Figure 6.4 One end of the first connecting portion 212 abuts against the portion of the second welding portion 221 that protrudes from the second connecting portion 222, and one end of the second connecting portion 222 abuts against the portion of the first welding portion 211 that protrudes from the first connecting portion 212.

[0048] In this embodiment, there are no obvious gaps between the inner and outer walls of the metal composite ring 20, which improves the overall appearance and strength of the metal ring.

[0049] In one embodiment of this utility model, the radial thickness of the first welding part 211 and the second welding part 221 is between 0.5 and 2 mm. The material thickness of the welding part is generally not less than the thickness of the corresponding inner liner 12 and outer shell 11. Since the inner liner 12 and outer shell 11 of the thermos cup are generally thin, the thickness of the welding part can be slightly larger in order to ensure better welding strength. However, considering the amount of material used and the weight of the thermos cup after production, the thickness of the welding part is generally limited to no more than 2 mm, that is, the thickness of the metal composite ring 20 is no more than 2 mm.

[0050] In the actual production process of this utility model, the body of the container (the cup of the thermos) can be manufactured according to the following steps:

[0051] First, make the metal composite ring 20:

[0052] S1: Part of the inner and outer rings of the thicker stainless steel ring (inner ring 21) and titanium ring (outer ring 22) are cut off respectively, as shown in the attached diagram. Figure 6.1 As shown, this allows the cut-off inner ring and outer ring to fit together perfectly.

[0053] S2: Insert the stainless steel ring into the titanium ring. The two metals are interlocked at the cut edges, and the two ends are not flush. The inner and outer rings protrude respectively, as shown in the attached diagram. Figure 6.2 As shown;

[0054] S3: Heat the metal ring between 600-1200°C. Since the two metals are cut and tightly bonded at the composite point, no oxide layer will be generated under heating, allowing for better bonding.

[0055] S4: The heated two-layer metal rings are rolled together. After rolling, the two metal rings change from a shorter and thicker metal ring to a longer and thinner composite metal ring. At the same time, both ends of the composite metal ring are single-layer metal. After high-temperature rolling, the two metal rings can be well combined into one piece without the need for other connectors, and the overall integrity is better. Of course, in actual settings, a suitable metallurgical composite layer can be set between the first connecting part 212 and the second connecting part 222 according to the characteristics of different metal materials to improve the composite strength of the inner metal ring 21 and the outer metal ring 22. See Appendix. Figure 6.3 ;

[0056] S5: The two ends of the composite ring can be beveled to facilitate welding with the inner liner 12 and outer shell 11 of the thermos and to ensure the overall appearance of the thermos. (See attached image) Figure 6.4The first welding part 211 of this utility model has a bevel 23 formed on its inner side. This design has two advantages. First, the bevel 23 on the inner side makes the outer wall of the thermos cup appear as a straight wall, improving the overall appearance of the thermos cup. Second, the bevel 23 on the first welding part 211 ensures that the thickness of the joint between the first welding part 211 and the outer shell 11 is consistent (the first welding part 211 and the outer shell 11 are butt welded). This avoids uneven heat distribution during welding, which can affect the welding quality. The second welding part 221 has a bevel 23 on its outer side. Since the second welding part 221 is located at the top of the thermos cup, the bevel 23 on the second welding part 221 forms a transition at the end of the thermos cup, making it more aesthetically pleasing and practical.

[0057] S6: Weld the finished composite metal ring to the thermos cup as a single unit, as shown in the attached document. Figure 1 , 3 As shown, the bottom end of the first welding part 211 of the composite metal ring is aligned with the outer side of the top of the outer shell 11. After welding at the joint, it is ground smooth. The welding ring 121 at the top of the inner liner 12 fits into the inner wall of the second welding part 221 (the welding ring 121 can also play a role in pre-positioning the metal composite ring 20). After welding the top surface of the welding ring 121 and the inner wall of the second welding part 221 together and grinding it smooth, the cup body structure of the thermos cup can be formed.

[0058] It can be seen that by setting the metal composite ring 20 of this utility model, when it is welded to the inner liner 12 and the outer shell 11 of the thermos cup, it helps to ensure the welding quality (avoid the risk of weld burn-through), thereby improving the quality of the thermos cup.

[0059] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A container comprising an outer shell (11) and an inner liner (12) disposed within the outer shell (11), the inner liner (12) and the outer shell (11) being made of different metals, the top end of the outer shell (11) and the top end of the inner liner (12) being fixedly connected, characterized in that, The container further comprises a metal composite ring (20), the metal composite ring (20) comprising an inner metal ring (21) and an outer metal ring (22), the inner metal ring (21) comprising a ring-shaped first welding portion (211) and a ring-shaped first connecting portion (212), the outer metal ring (22) comprising a ring-shaped second welding portion (221) and a ring-shaped second connecting portion (222), the first welding portion (211) and the second welding portion (221) being oppositely spaced, the first connecting portion (212) and the second connecting portion (222) being located between the first welding portion (211) and the second welding portion (221) and being connected in a sleeved manner, one of the inner metal ring (21) and the outer metal ring (22) being made of the same material as the inner container (12) and being welded to the inner container (12) in a same-material manner through one of the first welding portion (211) and the second welding portion (221), the other of the inner metal ring (21) and the outer metal ring (22) being made of the same material as the outer shell (11) and being welded to the outer shell (11) in a same-material manner through the other of the first welding portion (211) and the second welding portion (221).

2. The container of claim 1, wherein A top end of the inner container (12) is formed with a welding ring (121), the metal composite ring (20) is sleeved on the outside of the inner container (12), an outside surface of the welding ring (121) is in abutment with and welded to an inside surface of the second welding portion (221), and a top end of the outer shell (11) is in abutment with and welded to an end portion of the first welding portion (211).

3. The container of claim 2, wherein A vacuum cavity (13) is formed between the metal composite ring (20), the outer shell (11) and the inner container (12).

4. The container of claim 1, wherein The first welding portion (211) has a radial thickness greater than that of the first connecting portion (212), and the second welding portion (221) has a radial thickness greater than that of the second connecting portion (222).

5. The container of claim 4, wherein An inside surface of the first welding portion (211) is flush with an inside surface of the first connecting portion (212), an outside surface of the first welding portion (211) protrudes radially outwardly beyond an outside surface of the first connecting portion (212), an outside surface of the second welding portion (221) is flush with an outside surface of the second connecting portion (222), and an inside surface of the second welding portion (221) protrudes radially inwardly beyond an inside surface of the second connecting portion (222).

6. The container of claim 5, wherein One end of the first connecting portion (212) is in abutment with a portion of the second welding portion (221) protruding beyond the second connecting portion (222), and one end of the second connecting portion (222) is in abutment with a portion of the first welding portion (211) protruding beyond the first connecting portion (212).

7. A container as claimed in any one of claims 1 to 6, wherein The outer metal ring (22) and the inner container (12) are made of the same material and are made of titanium metal, and the inner metal ring (21) and the outer shell (11) are made of the same material and are made of copper or aluminum or stainless steel.

8. A container as claimed in any one of claims 1 to 6, wherein The first connecting portion (212) and the second connecting portion (222) are heated and rolled to be integrated into one structure.

9. The container of any one of claims 1 to 6, wherein The end of the first welding portion (211) and / or the end of the second welding portion (221) is provided with a bevel groove (23).

10. The container of any one of claims 1 to 6, wherein The radial thickness of the first welding portion (211) and the second welding portion (221) is between 0.5-2mm.

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