Opening connecting structure of inner container and outer container of vacuum cup

Abstract

The utility model discloses a vacuum cup inner container and outer container opening connecting structure which comprises an inner container and an outer shell, a vacuum layer is formed between the inner container and the outer shell, a first bending part is arranged at the upper end of the inner container, a second bending part is arranged at the upper end of the outer shell, the first bending part and the second bending part are matched with each other to form a welding groove, and the welding groove is formed in the outer shell. Brazing powder is placed in the welding groove to weld the inner container and the shell. The welding groove is formed by the first bending part of the inner container and the second bending part of the outer shell, and then the brazing powder is filled in the welding groove for welding, so that the inner container and the outer shell can be conveniently welded, and the firmness of the inner container and the outer shell after being welded can be improved.

Description

Technical Field

[0001] The utility model relates to a heat preservation cup, in particular to a connecting structure for the mouths of the inner and outer linings of a heat preservation cup. Background Art

[0002] The heat preservation cup has a heat preservation effect. Its cup body is mostly composed of an inner lining and an outer shell. The existing heat preservation cups mostly use stainless steel for the inner lining and the outer shell, while the inner lining uses titanium. However, the titanium inner lining and the stainless steel outer shell cannot be connected by conventional welding, so improvement is needed. Summary of the Invention

[0003] Aiming at the defects such as the inconvenience in welding the titanium inner lining and the stainless steel outer shell in the prior art, the utility model provides a new connecting structure for the mouths of the inner and outer linings of a heat preservation cup.

[0004] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0005] A connecting structure for the mouths of the inner and outer linings of a heat preservation cup, comprising an inner lining and an outer shell. A vacuum layer is formed between the inner lining and the outer shell. The upper end of the inner lining is provided with a first bending part, and the upper end of the outer shell is provided with a second bending part. The first bending part and the second bending part cooperate with each other to form a welding groove. Brazing powder is placed in the welding groove to weld the inner lining and the outer shell.

[0006] The utility model forms a welding groove through the first bending part of the inner lining and the second bending part of the outer shell, and then fills brazing powder in the welding groove for welding, so as to facilitate the welding of the inner lining and the outer shell, and can also improve the firmness after welding the inner lining and the outer shell.

[0007] Preferably, in the connecting structure for the mouths of the inner and outer linings of a heat preservation cup described above, the first bending part includes a first vertical wall, a first horizontal wall and a second vertical wall. The first vertical wall, the first horizontal wall and the second vertical wall form an upper groove part, and the first vertical wall, the first horizontal wall and the second vertical wall are integrally formed.

[0008] The integrally formed first vertical wall, first horizontal wall and second vertical wall are convenient for production and manufacturing on the one hand, and can also improve the structural strength of the upper groove part on the other hand.

[0009] Preferably, in the connecting structure for the mouths of the inner and outer linings of a heat preservation cup described above, the second bending part includes a third vertical wall and a second horizontal wall. The third vertical wall is mutually attached to the first vertical wall, and the outer side surface of the second horizontal wall is mutually attached to the inner side surface of the second vertical wall, so as to form the welding groove.

[0010] Through the above structural settings, the assembly accuracy when forming the welding groove can be improved.

[0011] Preferably, for a connection structure at the mouths of the inner and outer liners of a heat-insulated cup, the third vertical wall and the second horizontal wall are integrally formed.

[0012] The integrally formed third vertical wall and second horizontal wall are convenient for production and manufacturing on the one hand, and can also improve the structural strength on the other hand.

[0013] Preferably, for a connection structure at the mouths of the inner and outer liners of a heat-insulated cup, after the third vertical wall is attached to the first vertical wall, a bead rolling process is performed at a position close to the welding groove.

[0014] After the bead rolling process, the structural strength after the connection of the inner liner and the outer shell can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a longitudinal sectional structural schematic diagram of the present invention;

[0016] Figure 2 for the present invention Figure 1 is a partial enlarged view of part A in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes the present invention in detail in conjunction with the appended Figure 1-2 drawings and specific embodiments, but they do not limit the present invention:

[0018] Embodiment 1

[0019] As Figure 1 , Figure 2 shown, a connection structure at the mouths of the inner and outer liners of a heat-insulated cup includes an inner liner 1 and an outer shell 2. A vacuum layer is formed between the inner liner 1 and the outer shell 2. A first bending portion 11 is provided at the upper end of the inner liner 1, and a second bending portion 21 is provided at the upper end of the outer shell 2. The first bending portion 11 and the second bending portion 21 cooperate with each other to form a welding groove 3. Brazing powder is placed in the welding groove 3 to weld the inner liner 1 and the outer shell 2.

[0020] Preferably, the first bending portion 11 includes a first vertical wall 111, a first horizontal wall 112, and a second vertical wall 113. The first vertical wall 111, the first horizontal wall 112, and the second vertical wall 113 form an upper groove portion, and the first vertical wall 111, the first horizontal wall 112, and the second vertical wall 113 are integrally formed.

[0021] Preferably, the second bending portion 21 includes a third vertical wall 211 and a second horizontal wall 212. The third vertical wall 211 is attached to the first vertical wall 111, and the outer side surface of the second horizontal wall 212 is attached to the inner side surface of the second vertical wall 113, thereby forming the welding groove 3.

[0022] Preferably, the third vertical wall 211 and the second transverse wall 212 are integrally formed.

[0023] Preferably, after the third vertical wall 211 is fitted with the first vertical wall 111, a bead rolling process is performed at a position close to the welding groove 3.

[0024] Specifically, when the inner container 1 and the outer shell 2 need to be welded, first, the first bending portion 11 and the second bending portion 21 are cooperated to form the welding groove 3. Then, the inner container 1 and the outer shell 2 can be welded by filling brazing powder into the welding groove 3. After the inner container 1 and the outer shell 2 are welded, a bead rolling process is also required for the third vertical wall 211 and the first vertical wall 111, so as to effectively improve the firmness after the inner container 1 and the outer shell 2 are welded.

[0025] In summary, the above are only the preferred embodiments of the present invention. All equivalent changes and modifications made within the scope of the patent application of the present invention shall fall within the scope covered by the present invention.

Claims

1. A connection structure for the inner and outer liner openings of a thermos cup, comprising an inner liner (1) and an outer shell (2), wherein a vacuum layer is formed between the inner liner (1) and the outer shell (2), and characterized in that: The upper end of the inner liner (1) is provided with a first bent portion (11), and the upper end of the outer shell (2) is provided with a second bent portion (21), the first bent portion (11) and the second bent portion (21) cooperate with each other to form a welding groove (3), and brazing powder is placed in the welding groove (3) to weld the inner liner (1) and the outer shell (2), the first bent portion (11) comprises a first vertical wall (111), a first transverse wall (112) and a second vertical wall (113), the first vertical wall (111), the first transverse wall (112) and the second vertical wall (113) The first vertical wall (111), the first transverse wall (112) and the second vertical wall (113) form an upper groove portion, and the first vertical wall (111), the first transverse wall (112) and the second vertical wall (113) are integrally formed, the second bending portion (21) comprises a third vertical wall (211) and a second transverse wall (212), the third vertical wall (211) and the first vertical wall (111) are in contact with each other, and the outer side surface of the second transverse wall (212) and the inner side surface of the second vertical wall (113) are in contact with each other, thereby forming the welding groove (3).

2. The connection structure of the inner and outer openings of a thermos cup according to claim 1, characterized in that: The third vertical wall (211) and the second transverse wall (212) are integrally formed.

3. The connection structure of the inner and outer openings of a thermos cup according to claim 1, characterized in that: After the third vertical wall (211) and the first vertical wall (111) are bonded together, a bead rolling process is performed at a position close to the welding groove (3).

Images