Sealing cover

Abstract

The utility model discloses a sealing cover, and particularly relates to the technical field of can covers, the sealing cover comprises a sealing cover body, the upper end of the sealing cover body is provided with a through hole, the lower end of the sealing cover body is also fixedly provided with a sealing gasket which is coaxial with the through hole, the through hole is also internally provided with a vertical connecting rod, the lower end of the connecting rod is fixedly provided with an extrusion block, and the extrusion block is connected with the sealing gasket. A guide ring is further fixed to the upper end of the connecting rod, an operation assembly is further arranged at the upper end of the sealing cover body and comprises a pull ring, a penetrating groove is formed in the upper end of the pull ring, a U-shaped guide block is fixed to the upper end of the pull ring, and a limiting rod is further fixed between vertical parts of the U-shaped guide block. According to the sealing cover, the design of the operation assembly is adopted, a can cover can be easily opened only by pulling the pull ring, operation is convenient, a can can be sealed again, the reusability of the can is improved, and meanwhile long-term storage of the can is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of can lids, and particularly relates to a sealing lid. Background Art

[0002] A can lid is generally screwed onto a can body through threads. It has a continuous thread around its edge, which is convenient for consumers to open and close the can by hand or with the help of tools.

[0003] Chinese patent document CN205554972U provides a can lid, belonging to the field of can lids. It solves the problem that the existing can lid is inconvenient to unscrew. This can lid includes a circular lid body. The bottom surface of the lid body has an internal thread for cooperating with a can bottle. The top surface of the lid body is provided with a plurality of force application mechanisms. The force application mechanisms are circumferentially distributed along the top surface of the lid body. The force application mechanism includes a force application block hinged to the top surface of the lid body through a pin. It also includes an inner retaining edge and an outer retaining edge respectively arranged on the top surface of the lid body. The force application block can be rotated around the pin. Finally, the force application block abuts against the inner retaining edge, and the bottom surface of the force application block fits on the top surface of the lid body. The force application block can also be rotated in the reverse direction around the pin. Finally, the force application block abuts against the outer retaining edge, and the outer end of the force application block protrudes from the top surface of the lid body. This can lid is convenient to apply force by means of the outer end of the force application block to quickly open the can bottle.

[0004] However, this can lid cannot be resealed during actual use, which is not conducive to the long-term storage of cans, and this can lid cannot detect whether it has been opened. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a sealing lid, which can effectively solve the problems that the can cannot be resealed and it cannot be detected whether it has been opened.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A sealing lid includes a sealing lid body. A through hole is opened at the upper end of the sealing lid body. A sealing gasket coaxial with the through hole is further fixed at the lower end of the sealing lid body. A vertical connecting rod is further arranged inside the through hole. An extrusion block is fixed at the lower end of the connecting rod. A guiding ring is fixed at the upper end of the connecting rod. An operating component is further arranged at the upper end of the sealing lid body.

[0008] Preferably, the operating component includes a pull ring. A through groove is opened at the upper end of the pull ring. A U-shaped guiding block is fixed at the upper end of the pull ring.

[0009] Preferably, the top surface of the vertical part of the U-shaped guiding block is inclined near the groove.

[0010] Preferably, a limiting rod is further fixed between the vertical parts of the U-shaped guiding block.

[0011] Preferably, the gasket is made of an elastic soft material.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model adopts the design of an operating component, and only needs to pull the pull ring to easily open the can lid, which facilitates the operation. Moreover, the can can be sealed again, increasing the reusability of the can, and also being beneficial to the long-term storage of the can.

[0014] 2. The utility model adopts the design of a limiting rod, which can judge whether the can lid has been opened before, so as to timely discover situations such as the can being opened or tampered with during transportation or sales, protecting the legitimate rights and interests of consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 is a plan view of the utility model;

[0017] Figure 3 is an exploded view of the utility model;

[0018] Figure 4 is a state diagram of the utility model during use.

[0019] In the figure: 1. Sealing cover body; 2. Operating component; 11. Through hole; 12. Gasket; 13. Link rod; 14. Extrusion block; 15. Guide ring; 21. Pull ring; 22. U-shaped guide block; 23. Limiting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical means, creative features, achieved purposes and effects of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0021] As Figure 1 - Figure 4 shown, a sealing cover includes a sealing cover body 1. A through hole 11 is opened at the upper end of the sealing cover body 1, and a gasket 12 coaxial with the through hole 11 is further fixed at the lower end of the sealing cover body 1. Among them, the gasket 12 is used to seal the through hole 11. When designing the gasket 12, an elastic soft material is adopted, so that the gasket 12 can seal the gap between the through hole 11 and the link rod 13, preventing air from entering the can through the gap between the through hole 11 and the link rod 13, thereby shortening the shelf life of the can. A vertical link rod 13 is further arranged inside the through hole 11. When designing the link rod 13, it can be in contact with the through hole 11 or not in contact with the through hole 11, as long as it is ensured that the link rod 13 can move up and down relative to the through hole 11.

[0022] In addition, a pressing block 14 for pressing the gasket 12 is fixed to the lower end of the connecting rod 13. When the pressing block 14 presses the gasket 12, the gasket 12 seals the through hole 11, preventing air from entering the can through the through hole 11, thereby shortening the storage time of the can. At the same time, when the pressing block 14 does not press the gasket 12, the gasket 12 does not seal the through hole 11, enabling the inside of the can to have no negative pressure, which is convenient for opening the can lid. A guiding ring 15 is also fixed to the upper end of the connecting rod 13. Through the design of the connecting rod 13 being fixedly connected to the pressing block 14 and the guiding ring 15, the guiding ring 15 and the pressing block 14 can move up or down simultaneously. An operating assembly 2 is also provided at the upper end of the sealing cover body 1.

[0023] As Figure 2 and Figure 3 shown, the operating assembly 2 includes a pull ring 21. A through groove is formed in the upper end of the pull ring 21. The pull ring 21 is sleeved on the outer surface of the connecting rod 13 through a U-shaped guiding block 22. The U-shaped guiding block 22 is fixed to the upper end of the pull ring 21. The top surface of the vertical part of the U-shaped guiding block 22 is inclined near the groove. When the recess of the U-shaped guiding block 22 moves toward the side close to the through hole 11, the U-shaped guiding block 22 can push the guiding ring 15 upward. Then, the guiding ring 15 drives the pressing block 14 to press the gasket 12 through the connecting rod 13, so that the gasket 12 seals the through hole 11. At the same time, when the recess of the U-shaped guiding block 22 moves toward the side away from the through hole 11, due to the elasticity of the U-shaped guiding block 22 itself, it will push the pressing block 14 downward, further causing the gasket 12 not to seal the through hole 11, thereby enabling the inside of the can to have no negative pressure and facilitating the opening of the can lid.

[0024] A limiting rod 23 is also fixed between the vertical parts of the U-shaped guiding block 22. The limiting rod 23 is used to limit the connecting rod 13 to prevent the guiding ring 15 from slipping off the upper end of the U-shaped guiding block 22, so that the pressing block 14 does not press the gasket 12. At the same time, due to the design of the limiting rod 23, the integrity of the limiting rod 23 can prove that the can has not been opened.

[0025] The specific implementation mode of this embodiment is as follows: When the can lid is not opened, the limiting rod 23 is in a complete state. The connecting rod 13 is located between the recessed part of the U-shaped guiding block 22 and the limiting rod 23, and the bottom surface of the guiding ring 15 is in contact with the top surface of the U-shaped guiding block 22, so that the pressing block 14 presses the gasket 12 to seal the through hole 11, extending the shelf life of the can;

[0026] When the can is opened for the first time, pull the pull ring 21 to the side away from the connecting rod 13. Due to the inclined groove of the U-shaped guiding block 22 and the elastic design of the gasket 12, the pressing block 14 does not press the gasket 12, so that the gasket 12 does not seal the through hole 11. At this time, the air pressure inside the can is equal to the external air pressure, which is convenient for opening the can lid. And due to the design of the limiting rod 23 limiting the connecting rod 13, when the U-shaped guiding block 22 moves to the side away from the connecting rod 13, the limiting rod 23 can be disconnected, thus indicating that the can has been opened before;

[0027] When it is necessary to seal the unfinished can, just screw the sealing cover body 1 tightly onto the can bottle, and then push the U-shaped guiding block 22 to move towards the side close to the connecting rod 13, so that the pressing block 14 presses the gasket 12. At this time, the gasket 12 seals the through hole 11. When it is necessary to open the can, just push the pull ring 21 to the side away from the connecting rod 13.

[0028] It should be noted that the specific installation methods of the sealing cover body 1, the pull ring 21, the gasket 12, etc. in the present utility model are all conventional designs, and the present utility model will not be elaborated in detail.

[0029] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing cover, comprising a sealing cover body (1), characterized in that: A through hole (11) is provided at the upper end of the sealing cover body (1). A sealing gasket (12) coaxial with the through hole (11) is further fixed at the lower end of the sealing cover body (1). A vertical connecting rod (13) is further arranged inside the through hole (11). An extrusion block (14) is fixed at the lower end of the connecting rod (13). A guiding ring (15) is further fixed at the upper end of the connecting rod (13). An operating component (2) is further arranged at the upper end of the sealing cover body (1).

2. The sealing cover according to claim 1, wherein: The operating component (2) includes a pull ring (21). A through groove is provided at the upper end of the pull ring (21). A U-shaped guiding block (22) is fixed at the upper end of the pull ring (21).

3. The sealing cover according to claim 2, characterized in that: The top surface of the vertical part of the U-shaped guiding block (22) is inclined near the groove.

4. A sealing cover according to claim 2, characterized in that: A limiting rod (23) is further fixed between the vertical parts of the U-shaped guiding block (22).

5. A sealing cover according to claim 1, characterized in that: The sealing gasket (12) is made of an elastic soft material.

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