Water sealing structure for welding inner plug of cup cover

Abstract

The utility model discloses a cup lid inner plug welding water sealing structure which comprises a cup lid body, the cup lid body comprises an outer lid and an inner plug and further comprises a sealing ring, an installation space is arranged at the upper end of the outer lid, a welding step is arranged in the installation space, a welding portion is arranged at the lower end of the inner plug, the welding portion is matched with the welding step, and the sealing ring is arranged in the installation space. And after the welding part and the welding step are matched, a gap is formed between the lower end of the welding part and the mounting space, the sealing ring is arranged in the gap, and after the welding part of the inner plug and the welding step are welded, the gap is filled and sealed by the sealing ring. According to the cup cover, the sealing ring is placed in the gap, so that the welding part of the inner plug can extrude the sealing ring when being welded with the welding step of the shell, the gap between the welding part and the mounting space is filled and sealed, and the phenomenon that water enters the hollow position of the cup cover when the cup cover is used for a long time can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to a cup cover, in particular to a water sealing structure of a cup cover with an inner plug welded therein. Background Art

[0002] At present, due to process problems, ultrasonic welding of the outer cover and the inner cover of the cup lid may easily cause cold welding at some positions where the outer cover and the inner plug are positioned, which may cause water to enter the hollow position of the cup lid after long-term use. Therefore, improvement is needed. Summary of the invention

[0003] The utility model aims at the defects in the prior art that water easily enters into the hollow position of the cup cover, and provides a new water sealing structure of the cup cover with an inner plug welded therein.

[0004] In order to solve the above technical problems, the utility model is implemented through the following technical solutions:

[0005] A water sealing structure for welding an inner plug of a cup lid comprises a cup lid main body, wherein the cup lid main body comprises an outer cover and an inner plug, and also comprises a sealing ring. An installation space is provided at the upper end of the outer cover, a welding step is provided in the installation space, a welding portion is provided at the lower end of the inner plug, the welding portion and the welding step cooperate with each other, and after cooperation, a gap is formed between the lower end of the welding portion and the installation space, the sealing ring is arranged in the gap, and after the welding portion of the inner plug is welded to the welding step, the sealing ring fills and seals the gap.

[0006] The utility model places a sealing ring in the gap so that the welding part of the inner plug can squeeze the sealing ring when it is welded to the welding step of the outer shell, thereby filling and sealing the gap between the welding part and the installation space, thereby effectively preventing water from entering the hollow position of the cup cover when the cup cover is used for a long time.

[0007] Preferably, in the above-mentioned water sealing structure of the cup cover inner plug welding, the welding step comprises an upper top wall and a first vertical wall, and a welding block is provided on the upper top wall.

[0008] The welding block is used to weld the welding portion to the welding step.

[0009] Preferably, in the above-mentioned water sealing structure of the cup lid inner plug welded, the welding part includes a first transverse wall, a second vertical wall and a third transverse wall, the first transverse wall cooperates with the welding block, and the second vertical wall fits with the first vertical wall.

[0010] The arrangement of the first transverse wall and the second vertical wall can make the welding portion and the welding step fit more closely.

[0011] Preferably, in the above-mentioned water sealing structure of the cup cover inner plug welding, after the first transverse wall and the welding block are welded, the third transverse wall and the sealing ring are fitted with each other, and the welding block forms a boss shape.

[0012] The boss formed after welding can improve the welding accuracy when the first transverse wall is welded to the welding block, so as to prevent the outer cover or the inner plug from being damaged due to excessive welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the longitudinal section structure of the cup cover body of the utility model;

[0014] Figure 2 For this utility model Figure 1 A partial enlarged view of part A in the middle. DETAILED DESCRIPTION

[0015] The following is combined with Figure 1-2 The present invention is further described in detail with the following specific embodiments, but they are not intended to limit the present invention:

[0016] Example 1

[0017] like Figure 1 , Figure 2 As shown, a water sealing structure of a cup lid inner plug welding comprises a cup lid body 1, wherein the cup lid body 1 comprises an outer cover 11 and an inner plug 12, and also comprises a sealing ring 2. An installation space 3 is provided at the upper end of the outer cover 11, and a welding step 31 is provided in the installation space 3. A welding portion 121 is provided at the lower end of the inner plug 12, and the welding portion 121 cooperates with the welding step 31, and after cooperation, a gap 4 is formed between the lower end of the welding portion 121 and the installation space 3, and the sealing ring 2 is arranged in the gap 4. After the welding portion 121 of the inner plug 12 is welded to the welding step 31, the sealing ring 2 fills and seals the gap 4.

[0018] Preferably, the welding step 31 includes an upper top wall 311 and a first vertical wall 312 , and a welding block 3111 is provided on the upper top wall 311 .

[0019] Preferably, the welding portion 121 includes a first transverse wall 1211 , a second vertical wall 1212 and a third transverse wall 1213 , the first transverse wall 1211 cooperates with the welding block 3111 , and the second vertical wall 1212 and the first vertical wall 312 are in contact with each other.

[0020] Preferably, after the first transverse wall 1211 and the welding block 3111 are welded, the third transverse wall 1213 and the sealing ring 2 are fitted to each other, and the welding block 3111 forms a boss shape.

[0021] Specifically, when the inner plug 12 of the utility model needs to be welded to the outer cover 11, the welding portion 121 of the inner plug 12 is first matched with the welding step 31, and after the matching, the welding portion 121 will form a gap 4 with the installation space 3, and then the sealing ring 2 is placed in the gap 4, and then the welding portion 121 and the welding step 31 are welded, so that the welding block 3111 of the welding step 31 will melt to form a boss shape, and at this time, the third transverse wall 1213 of the welding portion 121 will squeeze the sealing ring 2, so that the sealing ring 2 will completely fill and seal the gap 4.

[0022] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application for the present invention should fall within the scope of the present invention.

Claims

1. A water sealing structure with a cup cover inner plug welded therein, comprising a cup cover body (1), wherein the cup cover body (1) comprises an outer cover (11) and an inner plug (12), characterized in that: The invention also comprises a sealing ring (2); an installation space (3) is provided at the upper end of the outer cover (11); a welding step (31) is provided in the installation space (3); a welding portion (121) is provided at the lower end of the inner plug (12); the welding portion (121) and the welding step (31) cooperate with each other, and after the cooperation, a gap (4) is formed between the lower end of the welding portion (121) and the installation space (3); the sealing ring (2) is arranged in the gap (4); after the welding portion (121) of the inner plug (12) and the welding step (31) are welded, the sealing ring (2) fills and closes the gap (4).

2. A water sealing structure for welding the inner plug of a cup cover according to claim 1, characterized in that: The welding step (31) comprises an upper top wall (311) and a first vertical wall (312), and a welding block (3111) is provided on the upper top wall (311).

3. A water sealing structure for welding the inner plug of a cup cover according to claim 2, characterized in that: The welding portion (121) comprises a first transverse wall (1211), a second vertical wall (1212) and a third transverse wall (1213); the first transverse wall (1211) cooperates with the welding block (3111), and the second vertical wall (1212) and the first vertical wall (312) are in contact with each other.

4. A water sealing structure for welding the inner plug of a cup cover according to claim 3, characterized in that: After the first transverse wall (1211) and the welding block (3111) are welded, the third transverse wall (1213) and the sealing ring (2) are fitted to each other, and the welding block (3111) forms a boss shape.

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