Double vacuum cup with titanium inner container

Abstract

The utility model discloses a double vacuum cup with a titanium inner container, which comprises a metal inner shell, a metal outer shell and the titanium inner container, and a first heat preservation space formed by vacuumizing is arranged between the metal inner shell and the metal outer shell; the titanium inner container is provided with an interference assembling part which is in interference assembling with the metal inner shell, a reserved gap used for forming a second heat preservation space is further reserved between the titanium inner container and the metal inner shell, and the second heat preservation space is filled with air. A flexible sealing piece used for sealing the second heat preservation space is arranged between the titanium inner container and the metal inner shell. The second heat preservation space is located below the interference assembly part, and the flexible sealing piece is located above the interference assembly part. Through the interference assembly of the titanium inner container and the metal inner shell and the design of the reserved gap, the double heat preservation effect is achieved, and the heat preservation performance of the heat preservation cup is improved. Meanwhile, through the design of the flexible sealing piece, the second heat preservation space is effectively sealed, and heat loss is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of thermos cups, in particular to a double thermos cup with a titanium liner. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for the thermal insulation performance of thermos cups. Traditional thermos cups usually only use a vacuum design between a single-layer metal outer shell and an inner shell. This design reduces heat exchange to a certain extent, but due to the thermal conductivity of the material itself and the influence of external environmental factors, the thermal insulation effect is still limited.

[0003] With the advancement of material science, titanium, as a lightweight, corrosion-resistant and low thermal conductivity material, has gradually attracted attention in the application of thermos liner. However, using titanium as the liner material alone cannot fully exert its advantages, because heat can still be transferred through the space between the liner and the shell.

[0004] Currently, there are thermos cups on the market with titanium inner liner and stainless steel outer cup. The thermos cup usually only has one layer of insulation space, and the insulation effect is limited. The titanium inner liner and the stainless steel need to be welded at the interface to achieve fixation between the two. However, due to the large difference in melting points between stainless steel and titanium, the welding process is complicated and the defective rate is high, which affects the insulation effect. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a double insulation cup with a titanium liner.

[0006] The utility model adopts the following technical solutions:

[0007] A double insulation cup with a titanium liner, comprising a metal inner shell, a metal outer shell and a titanium liner, wherein a first insulation space formed by vacuuming is provided between the metal inner shell and the metal outer shell;

[0008] The titanium inner liner has an interference fitting portion for interference fitting with the metal inner shell, and a reserved gap for forming a second heat-insulating space is reserved between the titanium inner liner and the metal inner shell, the second heat-insulating space is filled with air, and a flexible sealing member for sealing the second heat-insulating space is provided between the titanium inner liner and the metal inner shell;

[0009] Wherein, the second heat-insulating space is located below the interference fitting portion, and the flexible sealing component is located above the interference fitting portion.

[0010] Furthermore, the metal inner shell comprises:

[0011] An inner shell body, used to accommodate the titanium liner, and having a first opening formed at the bottom thereof; and

[0012] An inner shell base, used to seal the first opening after the titanium liner is installed into the inner shell body through the first opening;

[0013] Wherein, the inner shell base and the inner shell body are fixed by welding.

[0014] Furthermore, the interference fitting portion includes a boss section and a limiting section, and the metal inner shell has a vertical section abutting against the boss section and a bent section fitting against the limiting section.

[0015] Furthermore, the metal inner shell and the metal outer shell are welded at the top connection to form a second opening.

[0016] Furthermore, the mouth of the titanium liner is turned outward to form a turned-edge structure with a gap between the second opening.

[0017] Furthermore, the flexible sealing member is interference fit in the gap between the flange and the second opening.

[0018] Furthermore, the outer diameter of the flange is not greater than the inner diameter of the second opening.

[0019] Furthermore, the thermos cup also includes a cup mouth bracket, which is arranged on the outer side wall of the metal shell and fixed to the outside of the flexible sealing component by interference fit.

[0020] Furthermore, the cup mouth bracket is snap-fitted with the metal shell.

[0021] Furthermore, the metal inner shell and the metal outer shell are stainless steel components, copper components, iron components or aluminum components.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] (1) The thermos cup of the utility model is designed with interference fit and reserved gap between the titanium inner liner and the metal inner shell. It not only has the first insulation space between the metal inner shell and the metal outer shell formed by traditional vacuum extraction, but also has a gap filled with air between the titanium inner liner and the metal inner shell to form a second insulation space. Since the thermal conductivity of air is weak and heat can only be transmitted in the form of thermal radiation in a vacuum, the second insulation space will cause less heat loss, and the lost heat will be locked in the first insulation space, achieving a double insulation effect. In addition, a flexible seal is provided between the titanium inner liner and the metal inner shell to effectively seal the second insulation space and prevent heat loss, thereby further improving the insulation performance.

[0024] (2) The mouth of the titanium liner of the utility model is turned outward to form a flange, and a gap is formed between the opening of the metal inner shell. This design not only facilitates the installation of the titanium liner, but also facilitates the installation and fixation of the flexible seal.

[0025] (3) The utility model realizes a stable assembly between the titanium liner and the metal inner shell by cooperating the boss section and the limit section with the vertical section and the bent section of the metal inner shell, while also ensuring the formation of the second heat preservation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of the internal structure of the utility model.

[0027] Figure 2 This is an assembly structure diagram of the metal inner shell and the metal outer shell of the utility model.

[0028] Figure 3 This is a cross-sectional view of the assembly structure of the metal inner shell and the titanium inner liner of the utility model.

[0029] In the figure:

[0030] Metal inner shell 1; vertical section 11; bending section 12; inner shell body 13; inner shell base 14; first opening 15; second opening 16; metal outer shell 2; outer shell body 21; outer shell base 22; third opening 23; titanium liner 3; boss section 31; limit section 32; first insulation space 4; interference fit section 5; second insulation space 6; flexible seal 7; cup mouth bracket 8; flange structure 9. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various configurations. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Unless otherwise defined, the technical terms or scientific terms used in this patent document should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in the patent specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantitative limitations, but indicate the existence of at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on this application.

[0033] Embodiment 1:

[0034] like Figure 1 As shown, the utility model discloses a double insulation cup with a titanium liner, which includes a metal inner shell 1, a metal outer shell 2 and a titanium liner 3. The metal inner shell 1 is wrapped around the titanium liner 3, and the metal outer shell 2 is wrapped around the metal inner shell 1. The metal inner shell 1 and the metal outer shell 2 are welded and fixed at the top connection. The metal inner shell 1, the metal outer shell 2 and the titanium liner 3 are fixedly connected and sealed at the cup mouth to form an integrated cup body. In this embodiment, the cup body has an inclined angle near the top, and the cross-section of the cup body is a trapezoid. There is a first insulation space 4 formed by vacuuming between the metal inner shell 1 and the metal outer shell 2, and the titanium liner 3 has an interference fitting portion 5 for interference fitting with the metal inner shell 1. There is also a reserved gap between the titanium liner 3 and the metal inner shell 1 for forming a second insulation space 6, and the second insulation space 6 is filled with air. A flexible seal 7 for sealing the second heat-insulating space 6 is provided between the titanium liner 3 and the metal inner shell 1; the second heat-insulating space is located below the interference fitting portion 5, and the flexible seal 7 is located above the interference fitting portion. The flexible seal 5 is provided between the titanium liner 3 and the metal inner shell 1, which effectively realizes the fixation between the titanium liner 3 and the metal inner shell 1 and seals the second heat-insulating space 6, preventing heat loss, thereby further improving the heat-insulating performance.

[0035] like Figure 2 As shown, since the cross section of the cup body is a trapezoid, in order to facilitate assembly, the metal inner shell 1 includes: an inner shell body 13, which is used to accommodate the titanium inner liner, and a first opening 15 is formed at the bottom of the metal inner shell 1; and an inner shell base 14, which is used to block the first opening 15 after the titanium inner liner 3 is loaded into the inner shell body 13 through the first opening 15, and the inner shell base 14 is welded and fixed to the inner shell body 13. Correspondingly, in order to achieve the sealing of the first heat preservation space, the metal outer shell 2 includes an outer shell body 21 for accommodating the metal inner shell 1 and the titanium inner liner 3, and the bottom of the outer shell body 21 has a third opening 23. The metal outer shell 2 also includes an outer shell base 22, the bottom of which is welded and fixed to the outer shell body 21, for blocking the third opening 23. After the titanium liner 3 is installed and fixed on the metal inner shell 1, the bottom of the titanium liner 3 is located above the inner shell base 14. At this time, the bottom of the titanium liner 3 is exposed to the air. The bottom of the inner shell body 13 will not interfere with the outer shell base 22 when welding the inner shell base 14, which is convenient for welding the inner shell base 14 and the inner shell body 13. The metal inner shell 1 and the metal outer shell 2 are welded at the top contact point to form a second opening 16. The mouth of the titanium liner 3 is turned outward to form a flanging structure 9 with a gap between the second opening 16, and the flexible seal 7 is interference-fitted in the gap between the flanging and the second opening. The flanging structure 9 extends along the outside of the titanium liner 3, so that a gap is formed between the flanging structure 9 and the outer surface of the metal outer shell 2. Furthermore, the outer diameter of the flanging structure 9 is not greater than the inner diameter of the second opening 16, so that the top flanging structure can smoothly pass through the second opening at the top of the metal inner shell 1 during the installation of the titanium liner 3.

[0036] like Figure 2 , 3 As shown, the interference fitting portion 5 includes a boss section 31 and a limit section 32. The metal inner shell 1 has a vertical section 11 abutting against the boss section and a bending section 12 fitted with the limit section. An interference is provided between the boss section 31 and the vertical section 11. When the two are pressed together, the thermos cup will not shake due to the tight fit, which is convenient for the subsequent welding process; when the limit section and the bending section 12 are fitted, the titanium liner 3 is completely installed in place. The interference fitting portion 5 between the titanium liner 3 and the metal inner shell 1 ensures the tightness and stability of the assembly, and the design of the reserved gap makes it possible to form a second insulation space. This combination method not only ensures the reliability of the assembly, but also achieves the effect of double insulation.

[0037] Furthermore, the thermos cup further comprises a cup bracket 8, which is arranged on the outer side wall of the metal shell 2 and fixed to the outside of the flexible seal 7 by interference fit. The cup bracket 8 is snap-fitted with the metal shell 2 to achieve the installation of the cup bracket 8.

[0038] In this embodiment, the metal inner shell 1 and the metal outer shell 2 are made of stainless steel, copper, iron or aluminum. The selection of these materials ensures the durability and heat preservation performance of the thermos cup.

[0039] The specific implementation of this embodiment is described in detail below with reference to the accompanying drawings:

[0040] First, the metal outer shell is welded and fixed to the upper part of the metal inner shell to form the basic structure of the metal inner shell 1. Secondly, the titanium liner is pushed in through the first opening at the bottom of the inner shell body, and the boss section 31 of the titanium cup is interference fit with the vertical section 11, while ensuring that the limit section and the bending section 12 are fitted so that the titanium cup is fully installed in place, and then the bottom of the inner shell body 13 is welded to the inner shell base 14 to form a sealed cavity. Finally, the outer shell body is welded to the outer shell base, and the outer shell base is provided with a vacuum hole. The outer cup is made into a vacuum insulation cup body through a vacuum extraction process. A flexible seal is installed at the matching gap between the outer cup and the titanium liner, and the cup mouth bracket is buckled into the upper part of the metal outer shell. The cup mouth bracket is pressed onto the metal outer shell 2 with a pressing tool to complete the assembly. The upper part of the cup mouth bracket is provided with ribs that have an interference fit with the flexible seal to improve the installation reliability of the flexible seal.

[0041] Embodiment 2:

[0042] The difference between this embodiment and the first embodiment is that the cup body in this embodiment has a rectangular cross section, the metal inner shell 1 includes an inner shell body 13 and an inner shell base 14, and the metal outer shell 2 is an integrally formed shell. When installing the titanium liner 3, it is only necessary to push the titanium liner in through the first opening at the bottom of the inner shell body, and perform interference fit between the boss section 31 of the titanium cup and the vertical section 11, while ensuring that the limit section and the bending section 12 fit together, so that the titanium cup is fully installed in place, and then the bottom of the inner shell body 13 is welded to the inner shell base 14, and the one-piece metal outer shell 2 with an opening is welded to the opening of the metal inner shell at the left rear, and a flexible seal is installed at the matching gap between the outer cup and the titanium liner, and the cup mouth bracket is buckled into the upper part of the metal outer shell. The cup mouth bracket is pressed onto the metal outer shell 2 with a pressing tool to complete the assembly. The upper part of the cup mouth bracket is provided with a rib position that has an interference fit with the flexible seal to improve the installation reliability of the flexible seal.

[0043] The above are only preferred embodiments of the present invention. The protection scope of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall also be regarded as the protection scope of the present invention.

Claims

1. A double insulation cup with a titanium liner, the insulation cup comprises a metal inner shell, a metal outer shell and a titanium liner, and a first insulation space formed by vacuuming is provided between the metal inner shell and the metal outer shell; characterized in that: The titanium inner liner has an interference fitting portion for interference fitting with the metal inner shell, and a reserved gap for forming a second heat-insulating space is reserved between the titanium inner liner and the metal inner shell, the second heat-insulating space is filled with air, and a flexible sealing member for sealing the second heat-insulating space is provided between the titanium inner liner and the metal inner shell; Wherein, the second heat-insulating space is located below the interference fitting portion, and the flexible sealing component is located above the interference fitting portion.

2. A double insulation cup with titanium liner according to claim 1, characterized in that: The metal inner shell comprises: An inner shell body, used to accommodate the titanium liner, and having a first opening formed at the bottom thereof; and An inner shell base, used to seal the first opening after the titanium liner is installed into the inner shell body through the first opening; Wherein, the inner shell base and the inner shell body are fixed by welding.

3. A double insulation cup with titanium liner according to claim 1 or 2, characterized in that: The interference fitting portion comprises a boss section and a limiting section, and the metal inner shell comprises a vertical section abutting against the boss section and a bending section fitting against the limiting section.

4. A double insulation cup with titanium liner according to claim 2, characterized in that: The metal inner shell and the metal outer shell are welded at the top connection to form a second opening.

5. A double insulation cup with titanium liner according to claim 4, characterized in that: The mouth of the titanium liner is turned outward to form a turned-edge structure with a gap between the second opening.

6. A double insulation cup with titanium liner according to claim 5, characterized in that: The flexible sealing member is interference-fittedly arranged in the gap between the flange and the second opening.

7. A double insulation cup with titanium liner according to claim 5, characterized in that: The outer diameter of the flange is not greater than the inner diameter of the second opening.

8. The double insulation cup with titanium liner according to claim 1, characterized in that: The thermos cup also includes a cup mouth bracket, which is arranged on the outer side wall of the metal shell and fixed to the outside of the flexible sealing component by means of interference fit.

9. A double insulation cup with titanium liner according to claim 8, characterized in that: The cup mouth bracket is snap-fitted with the metal shell.

10. The double insulation cup with titanium liner according to claim 1, characterized in that: The metal inner shell and the metal outer shell are stainless steel components, copper components, iron components or aluminum components.

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