Airtight screw cap assembly easy to open and close

Abstract

The utility model belongs to the technical field of sealed containers, and particularly relates to an airtight screw cap assembly easy to open and close. The airtight screw cap assembly easy to open and close comprises a cap and a container opening connector. The cover comprises a cover body, an inner buckle type screwing buckle, a plane sealing gasket and a clamping groove. The container opening connector comprises a top sealing connector, a double-gradient hollowed-out outwards-protruding clamping tooth used for screwing and a cap-screwing-preventing transition blocking head. The cover is connected with the container opening connector through the buckles and the clamping teeth in a screwing mode. The screw cap assembly is small in opening and closing screw degree and rapid in opening and closing; when the screw cap assembly is screwed, the air tightness can be effectively ensured; and internal pressure can be quickly released when unscrewing is performed, so that the safety of uncovering under pressure is ensured. The quick sealing device is suitable for quick sealing opening and closing of the low-pressure container; particularly, when internal pressure is formed in a container containing carbon dioxide or other gas, gas-liquid leakage can be prevented, and normal and quick opening of the container is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealed containers, and in particular relates to an airtight easy-open and close screw cap assembly, which is suitable for the rapid sealing and opening of low-pressure containers. Background Art

[0002] The sealing screw cap assembly protects the contents of the container from external contamination and keeps the gas and liquid in the container sealed. The screw cap assembly is divided into two parts: the cap and the container mouth joint. Among them, the cap is usually made of materials such as metal, plastic or rubber. The types and designs of the caps vary, suitable for different types of bottles and usage scenarios. Common types of caps include: threaded caps, stopper caps, pop-up caps, and press caps. As a common type of cap, the threaded cap is usually used on containers such as glass bottles, plastic bottles, and metal bottles. It has an internal and external thread structure, which can be sealed by rotating and tightening. The thread structure is mature and reliable, but the threaded cap opens slowly and is not easy to open when the container is under positive pressure. The stopper cap is usually used on wine bottles such as wine bottles. It is made of materials such as cork, plastic or metal, and is sealed by inserting the cap into the bottle mouth. The stopper cap is easily flushed out when there is gas in the container, and the sealing purpose cannot be achieved. The pop-up cap is very convenient to use. Generally, it can be opened quickly by pressing the button on the cap. It also has high sealing performance, but the disadvantage is that it has many components, is easy to damage, and has high processing quality requirements. The push-on cover is opened by pressing hard, which is convenient and quick to open. Similarly, the push-on cover has many components and has high processing requirements.

[0003] In summary, the existing problems of the technology are: the common threaded caps have good sealing performance when used for containers with internal pressure liquids, but they are slow to open; the pop-up caps / press-on caps open quickly, but the sealing performance is questionable and the production process is complicated. Based on the characteristics of common sealing screw cap components, it is of certain practical value to develop a sealing screw cap component that opens and closes quickly, has good airtightness, and is stable and durable. Summary of the invention

[0004] In view of the problems existing in the prior art, the utility model provides an airtight easy-open and close screw cap assembly suitable for the rapid sealing and opening and closing of low-pressure containers. The screw cap assembly can prevent gas and liquid leakage when the container containing carbon dioxide or other gas solution forms internal pressure, ensuring the normal opening of the container.

[0005] The utility model provides an airtight easy-open and close screw cap assembly, see Figure 1 As shown, it includes a lid and a container mouth joint; wherein the lid includes a lid body, an inner buckle screw buckle, a flat sealing gasket, and a slot; the container mouth joint includes a top sealing interface, a double-gradient hollow outer protruding clamping tooth for tightening, and an anti-over-tightening stopper; the lid and the container mouth joint are screwed together by the buckle and the clamping tooth; wherein:

[0006] The cover body is an open cylindrical shape, and the groove is an annular concave surface, which is arranged at the bottom of the cover body; the planar sealing gasket is an annular structure, which matches the shape of the annular concave groove, that is, it is embedded in the annular concave groove, thereby fixing the sealing gasket;

[0007] There are 2-4 inner buckle screw buckles, which are evenly distributed on the inner lower side of the lid body; each buckle is approximately shuttle-shaped, with a gradient progressive slide, and can be locked when it is screwed in cooperation with the container mouth joint snap teeth;

[0008] The container mouth joint is cylindrical, and the top surface of the cylinder is an interface with a planar structure; when sealing, the top surface interface of the cylinder presses the plane sealing gasket in the cover to form a seal.

[0009] There are 2-4 groups of double-gradient hollow-outer raised latch teeth, which are evenly distributed on the outer side of the upper part of the cylindrical container mouth joint; each group of latch teeth includes a number of small teeth distributed at intervals, and the tooth surface is gradient; the positions of the 2-4 groups of double-gradient hollow-outer raised latch teeth correspond one by one to the positions of each inner-buckle screw buckle in the lid body, and match each other, thereby achieving rapid airtight tightening and opening.

[0010] There are 2 to 4 over-stops to prevent the cover from twisting, which are respectively arranged at the end of each group of double-gradient hollow external protruding teeth; when tightening, they are used to stop the gradient progressive slide from sliding excessively to prevent the cover from sealing failure.

[0011] Preferably, the lid part has three inward-buckle screw buckles and the container mouth joint part has three groups of three gradient outer protruding teeth, which are evenly distributed at 120° in the circumferential direction, so that the sealing tightening angle between the lid and the joint is less than 120°, and can be quickly tightened and opened airtightly.

[0012] In the utility model, the cover body and the container mouth joint body are made of metal or plastic. The plane sealing gasket is made of elastic silica gel or rubber, which has certain elasticity and good sealing performance.

[0013] The beneficial effects of the utility model are: designing an airtight and easy-to-open and close screw cap assembly for rapid sealing of low-pressure containers. The lid and the container mouth joint are screwed and connected by snap buckle teeth. The utility model has a small opening and closing rotation, which improves the opening and closing speed of the low-pressure container; on the other hand, when the lid and the joint are tightened, the airtightness of the low-pressure container can be effectively guaranteed, and when loosened, the internal pressure of the container can be quickly released to ensure the safety of opening the lid under pressure. At the same time, the design structure is simple, easy to process, and meets the requirements of mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1The utility model is a schematic diagram of the structure of the airtight easy-open and close screw cap assembly. Among them, the schematic diagram of the main structure of the cap is shown in (a) for the cap and (b) for the container mouth joint.

[0015] Figure 2 Schematic diagram of the structure of the new flat sealing gasket.

[0016] Numbers in the figure: lid body 1, inner buckle type screw buckle 11, flat sealing gasket 12, internal annular structure of flat sealing gasket 12-1, gasket slot 13, container mouth joint 2, sealing interface 21, double gradient hollow outer protruding tooth 22, anti-over-twisting cover stopper 23. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0018] Please refer to Figure 1 , Figure 2 The present invention provides an airtight, easy-to-open and close screw cap assembly, comprising a cap (1) and a container mouth joint (2), wherein the cap and the joint are screwed together by means of buckles and teeth.

[0019] In order to achieve excellent airtightness of the sealed screw cap, a flat sealing gasket (12) is arranged at the top of the lid (1), and the material is elastic silicone or rubber; the top of the container mouth joint (2) is provided with an interface (21) with a flat structure, and when the lid and the joint are screwed and locked, the end faces of the flat sealing gasket (12) and the interface (21) are pressed against each other to form a seal. Furthermore, three groups of double-gradient hollow external protruding teeth (22) are evenly distributed on the upper middle side of the exterior of the container mouth joint (2), and a stopper (23) is provided at the end of each group of teeth, which is used to prevent excessive sliding of the gradient progressive slide when tightening, thereby ensuring the sealing effect of the lid.

[0020] In order to realize the rapid opening and closing of the sealed screw cap, three inner buckle screw buckles (11) are evenly distributed on the inner lower side of the bottom of the lid (1), each buckle is approximately shuttle-shaped and has a gradient progressive slide; three groups of double-gradient hollow external protruding teeth (22) are evenly distributed on the middle and upper side of the outer side of the container mouth joint (2), each group of teeth includes a number of small teeth distributed at intervals, and presents a gradient tooth surface; the gradient buckle and gradient teeth are conducive to the screw cap and joint screw locking / opening of the low-pressure container, ensuring the overall opening and closing speed. Furthermore, the three inner buckle screw buckles (11) of the lid (1) and the three groups of gradient external protruding teeth (22) of the container mouth joint (2) are evenly distributed at 120° in the circumferential direction, so that the sealing rotation of the screw cap and the joint is less than 120°, and can be quickly tightened and opened in an airtight manner.

[0021] The above-mentioned embodiment only expresses one implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. An airtight easy-open and close screw cap assembly, characterized in that: It comprises a lid and a container mouth joint; the lid comprises a lid body, an inner buckle screw buckle, a flat sealing gasket and a slot; the container mouth joint comprises a top sealing interface, a double-gradient hollow outer protruding clamping tooth for tightening and a stopper to prevent excessive cover twisting; the lid and the container mouth joint are screwed and connected by the buckle and the clamping tooth; wherein: The cover body is an open cylindrical shape, and the groove is an annular concave surface, which is arranged at the bottom of the cover body; the planar sealing gasket is an annular structure, which matches the shape of the annular concave groove, that is, it is embedded in the annular concave groove, thereby fixing the sealing gasket; There are 2-4 inner buckle screw buckles, which are evenly distributed on the inner lower side of the lid body; each buckle is approximately shuttle-shaped, with a gradient progressive slide, and can be locked when it is screwed in cooperation with the container mouth joint snap teeth; The container mouth joint is cylindrical, and the top surface of the cylinder is an interface, which is a flat structure; when sealing, the top surface interface of the cylinder presses the flat sealing gasket in the lid to form a seal; There are 2-4 groups of double-gradient hollow-type external protruding teeth, which are evenly distributed on the outer side of the upper part of the cylindrical container mouth joint; each group of teeth includes a number of small teeth distributed at intervals, and the tooth surface is gradient; the positions of the 2-4 groups of double-gradient hollow-type external protruding teeth correspond to the positions of the inner buckle screw buckles in the lid body, and they match, that is, fast airtight tightening and opening are achieved; There are 2 to 4 over-stops to prevent the cover from twisting, which are respectively arranged at the end of each group of double-gradient hollow external protruding teeth; when tightening, they are used to stop the gradient progressive slide from sliding excessively to prevent the cover from sealing failure.

2. The airtight easy-open and close screw cap assembly according to claim 1, characterized in that: The lid part has three inward-buckle screw buckles and the container mouth joint part has three groups of gradient outer protruding teeth, which are evenly distributed at 120° in the circumferential direction, so that the sealing tightening angle of the lid and the joint is less than 120°, achieving rapid airtight tightening and opening.

Images