Sealing lid convenient to use and food storage container

Abstract

The present application discloses a sealing lid convenient to use and a food storage container. The sealing lid convenient to use comprises: a panel; a lid ring arranged around the panel and sealingly connected to the panel, the lid ring being an elastic part, and a vent hole being formed in the lid ring; and a rotating block, one end of the rotating block being integrally connected to the lid ring, the other end of the rotating block being rotationally matched with the lid ring, the rotating block being an elastic part, the rotating block being provided with a plugging protrusion integrally connected to the rotating block, and the plugging protrusion being arranged corresponding to the vent hole. The rotating block is configured to rotate toward the side facing away from the center of the panel so as to drive the plugging protrusion to block the vent hole; and the rotating block is configured to rotate toward the side facing the center of the panel so as to drive the plugging protrusion to be separated from the vent hole. Both the plugging protrusion and the vent hole can elastically deform, and thus, a better sealing effect is achieved after plugging; additionally, the position and the rotating use direction of the rotating block are optimized, thereby adapting to use in the sealing lid, and improving the convenience of user operations.

Description

Convenient-to-use sealing cover and preservation box TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing containers, in particular to a convenient-to-use sealing cover and a preservation box with the convenient-to-use sealing cover. BACKGROUND

[0002] At present, more and more sealing covers are provided with a structure for breaking a vacuum, and have the function of conveniently opening the sealed sealing cover.

[0003] In some related technologies, the sealing cover is provided with a sealing ring matched with the sealing container, and an exhaust hole is arranged in the side wall of the sealing ring. The exhaust hole can assist the opening operation of the sealing cover, so that the sealing cover can be smoothly opened. However, the outer wall of the sealing ring needs to be provided with an exhaust groove, so that the exhaust hole arranged on the groove wall can smoothly play a role. However, the arrangement of the exhaust groove and the exhaust hole will cause the problem of water seepage when the sealing container is used for sealed storage, and the sealing effect is not ideal.

[0004] In some related technologies, the sealing cover includes a glass plate and a sealing ring arranged around the glass plate. The glass plate is provided with a through hole for inserting a plug to seal the sealed sealing cover. However, there are problems such as inconvenient glass plate hole processing and lost plug. For example, conventional through hole processing of the glass plate needs to drill holes at both ends. The through hole after processing will have a step in the middle, and the cooperation effect with the plug is not good. Although a laser cutting machine can be used to process a through hole at a time, the procurement cost of the laser cutting machine is relatively high. In addition, the edge of the hole in the glass is relatively sharp, and the plug may be disconnected when the operation is not careful, resulting in the loss of the function of the plug.

[0005] In some related technologies, the sealing cover is provided with a rigid actuating structure. After actuating, the sealing cover is pried open. However, in use, a large vacuum pressure needs to be overcome to open the sealing cover, and the operation effect is poor.

[0006] In some related technologies, a sealing plug is arranged on the surface of the cover body of the sealing cover. The user rotates the sealing plug by operation to realize the sealing function of the sealing cover. The sealing plug is arranged to rotate inward for sealing and outward for opening. In the conventional sealing cover closing application, the user needs to close and compact the cover body and then operate the sealing plug. However, for this structure, after the user closes the cover body, the fingers are located on the inner side of the cover body. When operating the sealing plug, the hand needs to be moved to the outer side of the cover body and then the sealing plug needs to be rotated toward the inner side of the cover body, which involves two opposite operation actions. Similarly, in the conventional sealing cover opening application, the user needs to open the sealing plug and then operate the cover body. However, for this structure, when the user operates the sealing plug, the hand moves to the outer side of the cover body to break the vacuum structure, and then moves to the inner side of the cover body to lift the cover body upward, which also involves two opposite operation actions.

[0007] In summary, the existing sealing cover has the problems of poor sealing performance or inconvenient operation and use, and therefore, a sealing cover with convenient operation and good sealing performance is urgently needed. SUMMARY

[0008] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a first aspect of a sealing cover convenient to use, which is simple in structure, good in sealing performance, and convenient for users to operate and use.

[0009] The sealing cover convenient to use according to the first aspect of the present application comprises:

[0010] a panel;

[0011] a cover ring arranged around the panel and sealingly connected with the panel, the cover ring being an elastic member, the cover ring being provided with an exhaust hole;

[0012] a rotating block, one end of the rotating block being integrally connected with the cover ring, the other end of the rotating block being rotatably connected with the cover ring, the rotating block being an elastic member, the rotating block being provided with a plugging protrusion integrally connected with the rotating block, the plugging protrusion being correspondingly arranged with the exhaust hole;

[0013] wherein the rotating block is adapted to rotate along a side away from the center of the panel to drive the plugging protrusion to plug the exhaust hole; the rotating block is adapted to rotate along a side towards the center of the panel to drive the plugging protrusion to be separated from the exhaust hole.

[0014] The sealing cover convenient to use according to the first aspect of the present application has at least the following beneficial effects: the plugging protrusion and the exhaust hole can both be elastically deformed, and the sealing effect after plugging is better; and when the user generally performs a closing operation, the hand is located on one side of the center of the panel, the sealing cover is pressed and closed, then the hand moves away from the center of the panel, at this time, the hand can keep the same movement direction to operate the rotating block to plug the exhaust hole and realize the sealing function of closing and using; similarly, when the user performs an opening operation, the hand moves towards the center of the panel on the outside of the sealing cover and lifts the sealing cover upwards, at this time, the hand operates the rotating block to move towards the center of the panel, opens the exhaust hole to destroy the vacuum sealing state, and then keeps the same movement direction to lift or open the sealing cover; by optimizing the position and rotation use direction of the rotating block, the user's operation and use are more convenient.

[0015] The sealing cover convenient to use according to the first aspect of the present application, the exhaust hole is arranged on the end face of the cover ring and penetrates through the cover ring, and the rotating block is connected with the upper wall of the cover ring.

[0016] According to the sealing cover convenient to use of the first aspect of the present application, the cover ring is square ring-shaped, and the exhaust hole and the rotating block are located at the corner positions of the cover ring.

[0017] According to the sealing cover convenient to use of the first aspect of the present application, the end surface of the cover ring is provided with a receiving groove, and the projection area of the rotating block is located within the projection area of the receiving groove along the thickness direction of the panel.

[0018] According to the sealing cover convenient to use of the first aspect of the present application, the depth of the receiving groove matches the thickness of the rotating block, and the shape of the receiving groove matches the outer shape of the rotating block.

[0019] According to the sealing cover convenient to use of the first aspect of the present application, the end portion of the rotating block is provided with an operation portion, and the operation portion is protrudingly arranged to open the exhaust hole.

[0020] According to the sealing cover convenient to use of the first aspect of the present application, the rotating block has a marking structure arranged by color or symbol to mark the operation and use of the rotating block.

[0021] According to the sealing cover convenient to use of the first aspect of the present application, the bottom wall of the plugging protrusion is provided with a demolding counterbore, the bottom end of the plugging protrusion is provided with an anti-extraction protrusion, the outer diameter of the anti-extraction protrusion is greater than the hole diameter of the exhaust hole, so as to block the lower end of the exhaust hole, and the anti-extraction protrusion is adapted to be deformed towards one side of the center of the demolding counterbore, so as to be separated from the exhaust hole from the upper end of the exhaust hole.

[0022] According to the sealing cover convenient to use of the first aspect of the present application, the rotating range of the rotating block is A, and 28°≤A≤45° is satisfied.

[0023] According to the sealing cover convenient to use of the first aspect of the present application, the cover ring is adapted to be combined with the box body cover, one side of the cover ring towards the center of the box body is integrally connected with a sealing ring, the sealing ring is adapted to be abutted with the inner circumferential wall of the box body and form a closed cavity with the box body.

[0024] According to the sealing cover convenient to use of the first aspect of the present application, the sealing ring is arranged to be raised away from one side of the center of the cover ring, the sealing ring comprises an arc-shaped sealing portion and a spherical sealing portion, the arc-shaped sealing portion extends outwardly and is arranged to be curved upwardly, the spherical sealing portion is integrally connected to the end portion of the arc-shaped sealing portion, and the spherical sealing portion and the inner circumferential wall of the box body are in spherical surface abutment.

[0025] According to the sealing cover convenient to use of the first aspect of the present application, a one-way valve is further arranged on the panel or the cover ring, and the one-way valve is used to extract the gas in the closed cavity.

[0026] According to the sealing cover convenient to use in the first aspect of the application, the side of the cover ring towards the center of the box body is integrally connected with a pressing ring, and when a gap appears between the sealing ring and the inner circumferential wall of the box body, the pressing ring can press the upper wall of the box body to ensure the sealing property of the connection between the cover ring and the box body.

[0027] The second aspect of the application provides a sealing cover convenient to use, which extracts the gas in the closed cavity after the cover is closed, and sets double sealing on the periphery of the sealing cover, effectively preventing the gas leakage caused by the lifting of the sealing ring during the vacuum extraction process, significantly improving the sealing reliability and vacuum extraction efficiency, and the one-way valve has a self-sealing function in the natural state, further improving the overall sealing property and avoiding the problem of water seepage, which has a good market application prospect.

[0028] According to the sealing cover convenient to use in the second aspect of the application, the sealing cover is used to be closed with a box body, and comprises:

[0029] a panel;

[0030] a cover ring arranged around the panel and sealingly connected with the panel, the cover ring being a flexible member, the side of the cover ring towards the center of the box body being integrally connected with a sealing ring and a pressing ring, the sealing ring being adapted to abut against the inner circumferential wall of the box body and form a closed cavity with the box body;

[0031] a one-way valve arranged on the panel or the cover ring, the one-way valve being used to extract the gas in the closed cavity, and when a gap appears between the sealing ring and the inner circumferential wall of the box body, the pressing ring can press the upper wall of the box body to ensure the sealing property of the connection between the cover ring and the box body.

[0032] According to the second aspect of the application, the sealing cover is convenient to use, and has the following beneficial effects: the sealing ring and the compression ring are integrally connected on the cover ring, and the one-way valve is provided for extracting the gas in the closed cavity, the interference fit between the sealing ring and the inner circumferential wall of the box body and the close contact between the compression ring and the upper wall of the box body are ingeniously utilized to form a double sealing mechanism; in use, when the one-way valve is used to extract the air in the box body, the sealing ring first forms a close interference fit with the inner circumferential wall of the box body to ensure the preliminary sealing effect, however, during the vacuum extraction process, the bottom of the sealing ring may be lifted to one side of the extraction position, thereby causing air leakage at the lifted position, at this time, the compression ring is particularly important, the compression ring is in close contact with the upper wall of the box body to form a second sealing line; accordingly, even if the sealing ring is partially lifted, the compression ring can still press the upper wall of the box body to ensure the stability and reliability of the entire sealing system, the sealing effect during the vacuum extraction process is significantly improved, the air leakage problem commonly occurring in the traditional sealing mode is avoided, thereby improving the efficiency and success rate of the vacuum extraction, which is of great significance for prolonging the food preservation effect and ensuring the safety of the packaging.

[0033] According to the second aspect of the application, the sealing ring is arranged to be tilted away from the center of the cover ring.

[0034] According to the second aspect of the application, the sealing ring comprises an arc-shaped sealing portion and a spherical sealing portion, the arc-shaped sealing portion is arranged to extend outward and curve upward, the spherical sealing portion is integrally connected to the end of the arc-shaped sealing portion, and the spherical sealing portion is in spherical surface pressing fit with the inner circumferential wall of the box body.

[0035] According to the second aspect of the application, one end of the compression ring is connected to the cover ring, and the other end of the compression ring is arranged to be inclined downward away from the center of the panel; when the cover ring covers and compresses the box body, the two side surfaces of the compression ring are in close contact with the lower wall of the cover ring and the upper wall of the box body, respectively.

[0036] According to the second aspect of the application, the panel is provided with a mounting hole, the peripheral wall of the one-way valve is provided with a clamping groove, the groove wall of the clamping groove is in elastic sleeve fit with the hole wall of the mounting hole to clamp the panel, and the mounting hole can be driven to be in a sealed state.

[0037] According to the second aspect of the application, the distance between the top surface and the bottom surface of the clamping groove gradually decreases away from the center of the one-way valve, so as to press the top surface and the bottom surface of the panel, respectively.

[0038] According to the sealing cover convenient to use of the second aspect of the present application, the side surface of the clamping groove is provided with a ventilation channel between the hole wall of the mounting hole, and the bottom surface of the clamping groove is provided with an elastic protrusion which is adapted to abut against the bottom surface of the panel to drive the top surface of the clamping groove to abut against the top surface of the panel to seal.

[0039] According to the sealing cover convenient to use of the second aspect of the present application, when the one-way valve cooperates with the air pump, the elastic protrusion can be deformed by abutting against the bottom surface of the panel, driving the one-way valve to move upward and extracting the gas in the closed cavity through the ventilation channel.

[0040] According to the sealing cover convenient to use of the second aspect of the present application, the elastic protrusion has a spherical surface, and the bottom surface of the elastic protrusion is provided with a deformation groove which is adapted to allow the elastic protrusion to be concave.

[0041] The present application also proposes a fresh-keeping box with the sealing cover convenient to use of the first aspect and the second aspect.

[0042] According to the fresh-keeping box of the present application, the sealing cover convenient to use of the present application is used to cover and seal the box body.

[0043] According to the fresh-keeping box of the present application, the fresh-keeping box with the above advantages is more convenient to use.

[0044] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0045] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0046] Fig. 1 is a schematic view of the cross-sectional structure of the sealing cover convenient to use of the embodiment of the present application;

[0047] Fig. 2 is a schematic view of the overall structure of the sealing cover convenient to use of the embodiment of the present application;

[0048] Fig. 3 is a schematic view of the cross-sectional structure of the fresh-keeping box convenient to use of the embodiment of the present application;

[0049] Fig. 4 is a schematic view of the overall structure of the fresh-keeping box convenient to use of the embodiment of the present application;

[0050] Fig. 5 is a schematic view of the cross-sectional structure of the sealing cover convenient to use of another embodiment of the present application;

[0051] Fig. 6 is a schematic view of the structure of the one-way valve of the sealing cover convenient to use of the embodiment of the present application;

[0052] Fig. 7 is a schematic diagram of the structure of a one-way valve of a sealing cover according to another embodiment of the present application;

[0053] Fig. 8 is a schematic diagram of the overall structure of a sealing cover according to another embodiment of the present application;

[0054] Fig. 9 is a schematic diagram of the overall structure of a sealing cover according to another embodiment of the present application;

[0055] Fig. 10 is a schematic diagram of the overall structure of a sealing cover according to another embodiment of the present application;

[0056] Fig. 11 is a schematic diagram of the cross-sectional structure of a sealing cover according to another embodiment of the present application;

[0057] Fig. 12 is a schematic diagram of the split structure of a sealing cover according to another embodiment of the present application;

[0058] Fig. 13 is a schematic diagram of a sealing cover according to another embodiment of the present application in a sealing state;

[0059] Fig. 14 is a schematic diagram of a sealing cover according to another embodiment of the present application in an open state.

[0060] BRIEF DESCRIPTION OF THE DRAWINGS Panel 100; mounting hole 101; cover ring 200; exhaust hole 201; accommodating groove 202; annular portion 210; additional portion 220; sealing ring 230; arc-shaped sealing portion 231; spherical sealing portion 232; compression ring 240; rotating block 300; blocking protrusion 310; demolding counterbore 3101; anti-coming-off protrusion 311; operating portion 320; symbol mark 330; box body 400; closed cavity 401; one-way valve 500; clamping groove 501; air passage 502; elastic protrusion 510; deformation groove 5101. DETAILED DESCRIPTION

[0061] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which like reference numerals indicate like elements or elements having the same or similar function throughout the several disclosed embodiments. The embodiments described below are examples of the present application, which are only used to explain the present application and cannot be understood as a limitation of the present application.

[0062] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0063] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0064] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0065] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0066] In modern life and industrial production, vacuum extraction technology is widely used in food preservation, medicine packaging, precision instrument protection and other fields. Through vacuum extraction treatment, oxygen and other gases in the container can be effectively removed, thereby prolonging the shelf life of the goods, preventing oxidation and microbial growth, and maintaining the quality and freshness of the goods. Therefore, as an important part of realizing vacuum extraction, the performance of the sealing cover directly affects the effect and reliability of vacuum extraction.

[0067] In the related art, an elastic deformation sealing ring is arranged on the periphery of the sealing cover, and the sealing ring is elastically sealed with the peripheral wall of the box body. This design can achieve sealing to a certain extent, but during the vacuum extraction process, the sealing ring will generate a suction force towards the vacuum extraction position, causing the bottom of the sealing ring to lift up to one side of the vacuum extraction position, thereby causing air leakage at the lifting position. This not only reduces the efficiency of vacuum extraction, but also can cause the vacuum extraction operation to fail in severe cases.

[0068] To this end, as shown in FIGS. 1-4, the sealing cover convenient to use proposed in the present application comprises a panel 100, a cover ring 200 arranged around the panel 100 and sealingly connected with the panel 100, and a one-way valve 500 arranged on the panel 100 or the cover ring 200, wherein the cover ring 200 is a resilient member, and a sealing ring 230 and a pressing ring 240 are integrally connected to one side of the cover ring 200 facing the center of the box body 400. Optionally, the cover ring 200, the sealing ring 230, and the pressing ring 240 are all made of silicone and integrally formed. In application, the sealing ring 230 is adapted to abut against the inner circumferential wall of the box body 400 and form a closed cavity 401 with the box body 400. Further, the one-way valve 500 is used to extract the gas in the closed cavity 401, and when a gap occurs between the sealing ring 230 and the inner circumferential wall of the box body 400, the pressing ring 240 can press the upper wall of the box body 400 to ensure the sealing of the connection between the cover ring 200 and the box body 400. It should be noted that by sealingly connecting the cover ring 200 around the panel 100 and integrally connecting the sealing ring 230 and the pressing ring 240 on the cover ring 200, and at the same time providing the one-way valve 500 for extracting the gas in the closed cavity 401, this design cleverly utilizes the interference fit between the sealing ring 230 and the inner circumferential wall of the box body 400, and the close contact between the pressing ring 240 and the upper wall of the box body 400, forming a double sealing mechanism. In application, when the one-way valve 500 is used to extract the air in the box body 400, the sealing ring 230 first forms a tight interference fit with the inner circumferential wall of the box body 400 to ensure the preliminary sealing effect. However, during the vacuum extraction process, the bottom of the sealing ring 230 may be lifted to one side of the extraction, thereby causing air leakage at the lifted position. At this time, the role of the pressing ring 240 is particularly important, which is in close contact with the upper wall of the box body 400 to form a second line of defense for sealing. Accordingly, even if the sealing ring 230 is partially lifted, the pressing ring 240 can still press the upper wall of the box body 400 to ensure the stability and reliability of the entire sealing system. This improvement significantly improves the sealing effect during the vacuum extraction process, avoids the common air leakage problem of traditional sealing methods, thereby improving the efficiency and success rate of vacuum extraction, which is of great significance to prolong the food preservation effect and ensure the safety of packaging.

[0069] Referring again to FIG. 3, in some embodiments of the present application, the sealing ring 230 is arranged to be raised towards the side away from the center of the cover ring 200, so that when the sealing ring 230 contacts the inner circumferential wall of the box body 400, it can better adapt to the shape of the box body 400, increase the contact area and sealing pressure, and further improve the sealing effect. Especially during the vacuum extraction process, this raised design can effectively resist the inward suction force, reduce the risk of lifting the sealing ring 230, and ensure the reliability of the sealing. Optionally, the inner circumferential wall of the box body 400 gradually narrows downward, and can gradually abut against the inner circumferential wall of the box body 400 when the sealing cover is closed.

[0070] In some applications, the sealing cap has an elastic annular portion at the bottom, which seals the box by pressing against the inner circumferential wall of the box. However, existing elastic annular portions have a stepped structure, such as an "I" shape or an inverted "T" shape (not shown in the figure). During use, the pressure effect between the cap ring and the inner circumferential wall of the box is unstable. Due to the sealing force and the wrinkles of the elastic annular portion, the pressure can cause various deformation effects of the elastic annular portion, thus affecting the sealing performance. In some embodiments of this application, referring to Figures 1 and 3, the sealing ring 230 includes an arc-shaped sealing portion 231 and a spherical sealing portion 232. The arc-shaped sealing portion 231 extends outward and bends upward, and the spherical sealing portion 232 is integrally connected to the end of the arc-shaped sealing portion 231. The spherical sealing portion 232 and the inner circumferential wall of the box 400 are in a spherical pressing fit. To address this, on the one hand, the arc-shaped sealing part 231 has good deformation performance, which allows it to better drive the spherical sealing part 232 to press against the inner peripheral wall of the box 400 when the sealing cover is pressed down. The design of the spherical sealing part 232 increases the contact points between the sealing ring 230 and the inner peripheral wall of the box 400, enhancing the adaptability and flexibility of the seal. On the other hand, the spherical mating design further reduces the gap between the sealing ring 230 and the inner peripheral wall of the box 400, improving the stability of the seal. It should be noted that the spherical sealing part 232 at the end maintains a closed loop fit with the inner peripheral wall of the box 400, preventing any break in the loop that would weaken the sealing effect. Even when slightly lifted towards the one-way valve 500, the spherical sealing part 232 can still fit tightly against the inner peripheral wall of the box 400, further improving the sealing effect of the sealing ring 230. Furthermore, one end of the clamping ring 240 is connected to the cover ring 200, and the other end of the clamping ring 240 is arranged downwardly along the side away from the center of the panel 100. In application, when the cover ring 200 closes and clamps the box body 400, the two side surfaces of the clamping ring 240 are respectively attached to the lower wall of the cover ring 200 and the upper wall of the box body 400. It should be noted that in manufacturing applications, the upper edge of the box body 400 cannot be machined on the same plane. Since the sealing cover may be skewed during the closing operation, if the cover ring 200 is directly used to press against the upper wall of the box body 400 for sealing, it will cause the cover ring 200 to not be tightly attached to the entire upper wall of the box body 400, resulting in gaps. To address this, a clamping ring 240 is provided on the lower side of the cover ring 200. This inclined design of the clamping ring 240, which deforms and clamps the upper wall of the box body 400 when the cover ring 200 is pressed down, allows for a more even distribution of pressure, ensuring a tight fit with the upper wall of the box body 400 and further enhancing the effectiveness of the second line of defense. Furthermore, even when the sealing ring 230 is partially lifted, the clamping ring 240 maintains stable sealing performance, ensuring the reliability of the overall sealing system.

[0071] In some embodiments, the one-way valve is arranged in a cover ring (not shown in the figures). In some embodiments of the present application, as shown in Figures 2 to 5, the one-way valve 500 is arranged in the panel 100, which is optionally made of rigid material such as glass, and the one-way valve 500 is more stable after installation. Specifically, the middle part of the panel 100 is provided with a mounting hole 101, and the peripheral wall of the one-way valve 500 is provided with a clamping groove 501, and the groove wall of the clamping groove 501 is elastically sleeved with the hole wall of the mounting hole 101 to clamp the panel 100 and enable the mounting hole 101 to be in a sealed state, which not only simplifies the installation process of the one-way valve 500, but also ensures the sealing between the one-way valve 500 and the panel 100, preventing gas from leaking from the mounting hole 101 during the vacuumizing process. The elastic sleeving design makes the one-way valve 500 more convenient to install and disassemble, while also ensuring stability and reliability during long-term use. It should be noted that the existing one-way valve is generally arranged in the thickness direction of the panel, such as the peripheral wall of the one-way valve being provided with a mounting groove, and the width of the mounting groove being greater than the thickness of the panel (not shown in the figure), so that the one-way valve does not have active sealing and is only passively sealed under the condition of negative pressure in the box body. However, the sealing of passive sealing is poor, and various factors can break the sealing effect during use, for example, steam from hot rice in the box body seeps out of the one-way valve; for another example, when the box body containing liquid is tilted or turned over, the liquid flows out of the one-way valve and breaks the sealing, thereby breaking the negative pressure state in the box body. In this embodiment, the minimum width of the clamping groove 501 arranged on the peripheral wall of the one-way valve 500 in the normal state is less than the thickness of the panel 100, so that the one-way valve 500 after installation can clamp the panel 100 and actively seal the panel 100, further improving the sealing, and especially effectively preventing water from breaking the sealing effect of the one-way valve 500 and the panel 100.

[0072] In some embodiments, the one-way valve 500 presses and seals against the top surface and the bottom surface of the panel 100, and when the gas in the closed cavity 401 is extracted through the one-way valve 500, the top wall of the clamping groove 501 is lifted, so that the gas in the closed cavity 401 is extracted. Referring to Figures 3 and 6, in some embodiments of the present application, the distance between the top surface and the bottom surface of the clamping groove 501 gradually decreases towards the side away from the center of the one-way valve 500, so as to press the top surface and the bottom surface of the panel 100, respectively. It is easy to understand that the bottom surface of the clamping groove 501 does not completely fit the bottom surface of the panel 100 in the whole annular surface, and in the position left by the annular surface, the gas in the closed cavity 401 is extracted by lifting the top wall of the clamping groove 501. In addition, in some embodiments, the top surface of the clamping groove 501 does not completely fit the top surface of the panel 100, and only the outer peripheral part of the top surface of the clamping groove 501 fits the top surface of the panel 100, so that it is easier to be lifted and discharge gas during extraction.

[0073] In some embodiments, the one-way valve 500 is pressed against the top surface of the panel 100 to seal, and when the gas in the closed cavity 401 is extracted through the one-way valve 500, the one-way valve 500 moves upward, so that the gas in the closed cavity 401 is extracted. Referring to FIGS. 5 and 7, in some embodiments of the present application, the side surface of the clamping groove 501 is provided with a ventilation channel 502 between the hole wall of the mounting hole 101, and the bottom surface of the clamping groove 501 is provided with an elastic protrusion 510 adapted to press against the bottom surface of the panel 100 to drive the top surface of the clamping groove 501 to press against the top surface of the panel 100 to seal. It is easy to understand that the design of the elastic protrusion 510 can further improve the force of the top wall of the clamping groove 501 pressing against the top surface of the panel 100, so that the sealing effect is better. Overall design not only provides a path for gas flow, but also ensures the sealing and usability between the one-way valve 500 and the panel 100 through the pressing effect of the elastic protrusion 510. Specifically, the design of the ventilation channel 502 provides a specific flow path for the gas, and the elastic protrusion 510 plays a role in shrinking and deforming during the gas extraction process, so that the gas can be smoothly discharged through the one-way valve 500. Optionally, the elastic protrusion is a sheet structure (not shown in the figure), and the sheet-shaped elastic protrusion is upwardly curved and can be bent downward during gas extraction to make the one-way valve move upward as a whole. In some applications, when the one-way valve 500 cooperates with the gas extraction pump, the elastic protrusion 510 can be deformed by pressing against the bottom surface of the panel 100 to drive the one-way valve 500 to move upward and extract the gas in the closed cavity 401 through the ventilation channel 502. This dynamic sealing design enables the one-way valve 500 to automatically adjust its position during the gas extraction process, ensuring smooth discharge of the gas while preventing external gas from entering. Moreover, after the gas extraction is completed, the one-way valve 500 seals the top surface of the panel 100 under the negative pressure state of the box body 400, and also seals the top surface of the panel 100 under the resetting action of the elastic protrusion 510. In this regard, the deformation capability of the elastic protrusion 510 enables the one-way valve 500 to maintain good sealing performance in different working states, thereby improving the efficiency and reliability of vacuum extraction. Optionally, the elastic protrusion 510 has a spherical surface, and the bottom surface of the elastic protrusion 510 is provided with a deformation groove 5101 adapted to allow the elastic protrusion 510 to be concave. It is easy to understand that the spherical design of the surface of the elastic protrusion 510 enables it to uniformly distribute pressure when stressed, thereby reducing local stress concentration and improving the stability and reliability of the seal. Moreover, the spherical surface can better adapt to the slight unevenness of the bottom surface of the panel 100 when in contact with the bottom surface of the panel 100, thereby ensuring the sealing performance of the contact surface. At the same time, the spherical design can also reduce friction and prolong the service life of the elastic protrusion 510. In addition, the spherical elastic protrusion 510 can make the one-way valve 500 move upward as a whole without tilting during the extraction of the gas, thereby ensuring the gas extraction effect. Further, the deformation groove 5101 provided on the bottom surface further enhances the deformation capability of the elastic protrusion 510.When the one-way valve 500 works with the air extraction pump, the elastic protrusion 510 will be deformed by pressing against the bottom surface of the panel 100. The deformed groove 5101 provides enough space for the elastic protrusion 510 to effectively sag when subjected to a larger pressure, ensuring that the sealing effect is not affected. This design not only improves the sealing performance of the one-way valve 500 in different working states, but also maintains good sealing effect after multiple uses, prolonging the service life of the one-way valve 500.

[0074] In some applications, when the user wants to reopen the sealed cover after suction, the user manually lifts a corner of the top of the one-way valve 500 to connect the closed cavity 401 with the external air and destroy the negative pressure state inside the box body 400. However, when the corner is lifted, the negative pressure state inside the box body 400 can only be gradually destroyed, and the time when the corner is lifted is not standard. If the angle of the corner is too small and the time when the corner is lifted is too short, the negative pressure state inside the box body 400 can not be completely destroyed, and the user's experience is not good because the one-way valve 500 can be self-sucked due to the negative pressure state inside the box body 400, so that the one-way valve 500 is pressed again. To this end, referring again to FIGS. 2, 4, 8, and 9, the corner position or the long edge middle position or the short edge middle position of the cover ring 200 is provided with a rotating block 300, wherein the rotating block 300 is made of the same material as the cover ring 200 and is integrally formed. Moreover, one end of the rotating block 300 is integrally connected with the cover ring 200, and the other end is rotationally connected with the cover ring 200. Specifically, the cover ring 200 is provided with an exhaust hole 201, and the rotating block 300 is provided with a blocking protrusion 310 integrally connected with the rotating block 300, and the blocking protrusion 310 is correspondingly arranged with the exhaust hole 201. In specific applications, the rotating block 300 is adapted to rotate away from the center of the panel 100 to drive the blocking protrusion 310 to block the exhaust hole 201; the rotating block 300 is adapted to rotate toward the center of the panel 100 to drive the blocking protrusion 310 to be separated from the exhaust hole 201. Further, the rotating block 300 is selected to drive the closed cavity 401 to be connected with the outside without operating the one-way valve 500, so that the closed cavity 401 can be kept connected with the outside after the rotating block 300 is opened, the negative pressure state of the closed cavity 401 is ensured to be destroyed, and the user can open the sealed cover. In addition, it should be noted that the blocking protrusion 310 and the exhaust hole 201 can be elastically deformed, and the sealing effect is better after blocking. Moreover, when the user generally operates the hand to be located on one side of the center of the panel 100 and presses the sealed cover to be closed, the hand moves away from the center of the panel 100, at this time, the hand can keep the same movement direction to operate the rotating block 300 to block the exhaust hole 201, and the sealing function of the closed use is realized. Similarly, when the user operates the hand to move on the outside of the sealed cover toward the center of the panel 100 and lifts the sealed cover upward, at this time, the hand operates the rotating block 300 to move toward the center of the panel 100, opens the exhaust hole 201 to destroy the vacuum sealing state, and then keeps the same movement direction to lift or open the sealed cover. By optimizing the position and rotation direction of the rotating block 300, the user's operation is more convenient.

[0075] As shown in FIGS. 3, 4 and 9, the preservation box according to the embodiments of the present application comprises a sealing cover convenient to use according to the embodiments of the present application. The preservation box with the above-mentioned advantages of the sealing cover convenient to use has higher sealing effect and reliability in the vacuumizing process, and through the double sealing mechanism and the optimized design of the one-way valve 500, the preservation box can effectively prevent air leakage, prolong the shelf life of food, ensure the safety of packaging, and improve the user experience and satisfaction.

[0076] In some related technologies, the sealing cover is provided with a sealing ring matched with the sealed container, and an exhaust hole is formed in the side wall of the sealing ring. The exhaust hole can assist the opening operation of the sealing cover, so that it can be smoothly opened. However, the outer wall of the sealing ring needs to be provided with an exhaust groove, so that the exhaust hole arranged on the groove wall can smoothly play a role. However, the arrangement of the exhaust groove and the exhaust hole will cause the problem of water seepage when the sealed container is used for sealed storage, and the sealing effect is not ideal.

[0077] In some related technologies, the sealing cover comprises a glass plate and a sealing ring arranged around the glass plate. The glass plate is provided with a through hole for inserting a plug to seal the sealed cover after being closed. However, there are problems such as inconvenient glass plate hole machining and lost plug. For example, conventional through hole machining of the glass plate needs to drill holes at both ends. The through hole after machining will have a step in the middle, and the cooperation effect with the plug is not good. Although a laser cutting machine can be used to machine a through hole at one time, the procurement cost of the laser cutting machine is relatively high. In addition, the edge of the hole in the glass is relatively sharp, and the plug may be cut off if not handled carefully, resulting in the loss of the function of the plug.

[0078] In some related technologies, the sealing cover is provided with a rigid actuating structure, which is actuated and then pries open the sealing cover. However, in use, a large vacuum pressure needs to be overcome to open it, and the operation effect is poor.

[0079] In some related technologies, the surface of the cover body of the sealing cover is provided with a sealing plug. The user rotates the sealing plug by operation to realize the sealing function of the sealing cover. The sealing plug is arranged to rotate inward for sealing and outward for opening. In the conventional sealing cover closing application, the user needs to operate the sealing plug after the cover body is closed and compacted. However, for this structure, the user's fingers are located on the inner side of the cover body after the cover body is closed. When operating the sealing plug, the user needs to move the hand to the outer side of the cover body and then rotate the sealing plug inward. There are two opposite operation actions. Similarly, in the conventional sealing cover opening application, the user needs to operate the cover body after opening the sealing plug. However, for this structure, when the user operates the sealing plug, the user moves to the outer side of the cover body to destroy the vacuum structure, and then moves to the inner side of the cover body to lift the cover body upward. Similarly, there are two opposite operation actions.

[0080] To this end, as shown in FIGS. 10-12, the sealing cover convenient to use proposed in the present application comprises a panel 100, a cover ring 200 and a rotating block 300, wherein the cover ring 200 is arranged around the panel 100 and is sealingly connected with the panel 100, for example, the panel and the cover ring are both integrally injection molded plastic parts (not shown in the figure); for another example, the panel and the cover ring are both integrally injection molded silicone parts (not shown in the figure); for another example, the panel 100 is a stainless steel part or a glass part, the cover ring 200 is a silicone part, and the cover ring 200 is injection molded on the periphery of the panel 100 and sealingly wraps the periphery of the panel 100. And one end of the rotating block 300 is integrally connected with the cover ring 200, and the other end is rotationally matched with the cover ring 200, for example, the cover ring 200 and the rotating block 300 are both elastic, and optionally, the cover ring 200 and the rotating block 300 are both silicone parts, and in some manufacturing, the cover ring 200 and the rotating block 300 are integrally injection molded. In some manufacturing processes, referring to FIG. 12 again, the cover ring 200 comprises an annular part 210 and an additional part 220, the annular part 210 is mainly used to connect with the panel 100, and in parts manufacturing, the additional part 220 and the rotating block 300 are manufactured respectively, and in connection process, the additional part 220 and the rotating block 300 are pressed tightly using a mold, and then the annular part 210 is injection molded, and the annular part 210 is fused with the same side wall of the additional part 220 and the rotating block 300 at the same time, realizing the integral connection of the annular part 210, the additional part 220 and the rotating block 300. In addition, referring to FIGS. 10 and 11 again, the cover ring 200 is provided with an exhaust hole 201, and the rotating block 300 is provided with a plugging protrusion 310 integrally connected with the rotating block 300, and the plugging protrusion 310 is correspondingly arranged with the exhaust hole 201. In specific applications, the rotating block 300 is adapted to rotate on the side away from the center of the panel 100 to drive the plugging protrusion 310 to plug the exhaust hole 201; the rotating block 300 is adapted to rotate on the side towards the center of the panel 100 to drive the plugging protrusion 310 to be separated from the exhaust hole 201. It should be noted that the plugging protrusion 310 and the exhaust hole 201 can both be elastically deformed, and the sealing effect is better after plugging. And generally, when the user closes the operation, the hand is located on one side of the center of the panel 100, and after the sealing cover is pressed and closed, the hand is moved away from the center of the panel 100, at this time, the hand can keep the same direction of movement to operate the rotating block 300 to plug the exhaust hole 201, realizing the sealing function of the closed use. Similarly, when the user opens the cover, the hand moves on the outside of the sealing cover towards the center of the panel 100 and lifts the sealing cover upwards, at this time, the hand operates the rotating block 300 to move on the side towards the center of the panel 100, opens the exhaust hole 201 to break the vacuum sealing state, and then keeps the same direction of movement to lift or open the sealing cover. By optimizing the position and rotation use direction of the rotating block 300, the user's operation and use are more convenient.

[0081] In some embodiments, the bottom end of the blocking protrusion 310 is rounded, which can better enter the exhaust hole 201 and block the exhaust hole 201. In further embodiments, considering that the blocking protrusion 310 is rotatably connected with the exhaust hole 201, the rounded structure of the bottom end of the blocking protrusion 310 includes a large rounded side and a small rounded side. The large rounded side is located on the side of the blocking protrusion 310 facing the rotatable block 300 and the rotatable connection of the cover ring 200, and the small rounded side is located on the side of the blocking protrusion 310 away from the rotatable block 300 and the rotatable connection of the cover ring 200. That is, the large rounded side is located on the side of the blocking protrusion 310 facing the center of the panel 100, and the small rounded side is located on the side of the blocking protrusion 310 away from the center of the panel 100. In some applications, when the rotatable block 300 rotates outward, the large rounded side of the blocking protrusion 310 first contacts the exhaust hole 201, and then the small rounded side of the blocking protrusion 310 contacts the exhaust hole 201. By setting different rounded sides, the convenience of cooperation and the stability of cooperation after blocking of the blocking protrusion 310 and the exhaust hole 201 are significantly improved.

[0082] In some embodiments, the exhaust hole is arranged on the side wall of the cover ring, the rotating block is arranged on the same side of the exhaust hole of the cover ring, and is arranged on the end wall or the side wall (not shown in the figure) of the cover ring in a corresponding manner. However, this structure requires the cover ring to be arranged to be thicker, and the rotating block after plugging the exhaust hole at least partially adheres to the outer side wall of the cover ring, which is not aesthetically pleasing as a whole, and users are prone to misoperation of the rotating block when operating on the outer edge of the cover ring. In some embodiments of the present application, as shown in FIGS. 10 and 11, the exhaust hole 201 is arranged on the end face of the cover ring 200 and penetrates the cover ring 200, and the rotating block 300 is connected with the upper wall of the cover ring 200. The structure is simple, the exhaust hole 201 is easy to process and manufacture, and the rotating block 300 is located in the plane of the cover ring 200, and will not protrude from the outer edge of the cover ring 200 during operation, and the overall aesthetic appearance is good. In addition, the rotating block 300 is connected to one side of the center of the sealing cover, the connection of the rotating block 300 is more firm, the visual evaluation of the stability of the connection of the rotating block 300 is better, and the user has a better psychological use experience. Further, the end face of the cover ring 200 is provided with a receiving groove 202, and along the thickness direction of the panel 100, the projection area of the rotating block 300 is located in the projection area of the receiving groove 202. Further, when the plugging protrusion 310 plugs the exhaust hole 201, the rotating block 300 can be placed in the receiving groove 202, at least partially filling the receiving groove 202, so that the end face of the cover ring 200 becomes relatively flat, improving the overall storage, for example, facilitating the stable stacking of other objects on the end face of the sealing cover. In some embodiments of the present application, the receiving groove 202 and the rotating block 300 are designed to be profiled, specifically, the depth of the receiving groove 202 matches the thickness of the rotating block 300, and the shape of the receiving groove 202 matches the shape of the rotating block 300, so that the rotating block 300 can be filled in the receiving groove 202, the overall aesthetic appearance is better, and the receiving groove 202 has no large gap, which can avoid the phenomenon of dust accumulation during long-term use after sealing, and improve the cleanability to some extent. It should be noted that the depth of the receiving groove 202 matches the thickness of the rotating block 300, which does not mean that the depth of the receiving groove 202 is equal to the thickness of the rotating block 300. Since the rotating block 300 has elasticity and can deform, and it is difficult to accurately determine the size during manufacturing, it can be considered that the depth of the receiving groove 202 is close to the thickness of the rotating block 300. For example, the depth of the receiving groove 202 and the thickness of the rotating block 300 differ by 0-10 mm. It is easy to understand that the exhaust hole 201 is arranged on the end face of the receiving groove 202, the plugging protrusion 310 is arranged on the lower wall of the rotating block 300, and after the plugging protrusion 310 plugs the exhaust hole 201, the user cannot observe the plugging protrusion 310 from the outside, and the aesthetic appearance of use is better.

[0083] In some embodiments, the sealing ring is disc-shaped (not shown in the figures), and in some embodiments of the present application, the sealing ring 230 is square disc-shaped, as shown in FIG. 10, the cover ring 200 is square ring-shaped, and the exhaust hole 201 and the rotating block 300 are both located at the corner of the cover ring 200, which is simple in structure, reduces the manufacturing difficulty of connection with the panel 100, and reduces the interference with the panel 100. For example, when the panel 100 is a glass plate, the rotating block 300 located at the corner will not block the user's line of sight when observing through the panel 100. It is easy to understand that according to different modeling needs, in some manufacturing applications, the rotating block is located at the middle of one side of the cover ring (not shown in the figures), or the additional part of the cover ring extends towards the center of the panel, and correspondingly, the rotating block is arranged at a position deviated from the center of the panel (not shown in the figures).

[0084] Referring again to FIGS. 10, 13 and 14, in some embodiments of the present application, the end of the rotating block 300 is provided with an operating part 320, which is protrudingly arranged to open the exhaust hole 201. This further facilitates the operation of the rotating block 300 by the user. In applications, even if the rotating block 300 sinks into the accommodating groove 202, the user can also conveniently open it by rotating the rotating block 300. It should be noted that the operating part 320 can facilitate the lifting of the rotating block 300 to open the exhaust hole 201, but in some applications, after the user closes the sealing cover on the box body 400, when the hand moves along the side away from the center of the sealing cover, the finger presses the end surface of the rotating block 300 to drive the plugging protrusion 310 to plug the exhaust hole 201, which is more convenient to operate, so it is not necessary to specially operate the rotating block 300 through the operating part 320.

[0085] In addition, the rotating block 300 has a marking structure arranged by color or symbol to mark the operation and use of the rotating block 300, which can prompt the user who uses it for the first time to mark the operation mode or operation position. For example, the color of the rotating block 300 is different from the color of the cover ring 200, which marks the operation position of the user. For example, the rotating block 300 adopts orange, red or yellow, etc. relatively bright color, and the cover ring 200 adopts gray, white, etc. color. In some applications, different colors can be manufactured together by two-color injection molding process, or different colors can be manufactured separately by using different color raw materials, and the specific way is more, which is not limited here. In some embodiments of the present application, the rotating block 300 is marked in the form of a symbol, for example, referring to FIGS. 10, 13 and 14, the end surface of the rotating block 300 is provided with a symbol mark 330, which is optionally in the form of an arrow, indicating the operation direction of the user.

[0086] In some embodiments, the exhaust hole 201 is a cylindrical hole, the blocking protrusion 310 is also cylindrical, and the blocking protrusion 310 is in abutting sealing with the peripheral wall of the exhaust hole 201. In some embodiments of the present application, in addition to the abutting sealing with the peripheral wall of the exhaust hole 201, the blocking protrusion 310 also abuts with the lower end of the exhaust hole 201, having the functions of sealing and anti-disengagement. Specifically, as shown in FIG. 11, the bottom end of the blocking protrusion 310 is provided with an anti-disengagement protrusion 311, the outer diameter of the anti-disengagement protrusion 311 is greater than the diameter of the exhaust hole 201, so as to block the lower end of the exhaust hole 201. It is easy to understand that the anti-disengagement protrusion 311 can abut with the lower peripheral edge of the exhaust hole 201, further improving the blocking effect. Moreover, the anti-disengagement protrusion 311 improves the anti-disengagement property of the blocking protrusion 310, reducing the disengagement of the anti-disengagement protrusion 311 caused by misoperation, for example, when the fresh-keeping box is placed in the kitchen for use, the mouse is not easy to touch the rotating block 300 to open the exhaust hole 201. Further, the bottom wall of the blocking protrusion 310 is provided with a demolding counterbore 3101, in application, the anti-disengagement protrusion 311 is suitable to deform towards one side of the center of the demolding counterbore 3101, so as to disengage from the exhaust hole 201 from the upper end of the exhaust hole 201, in manufacturing, the provision of the demolding counterbore 3101 facilitates the demolding of the blocking protrusion 310 from the injection mold. It should be noted that the accommodation space of the demolding counterbore 3101 needs to be greater than or equal to the deformation amount of the anti-disengagement protrusion 311 deformed inwardly to be less than the exhaust hole 201, in some designs, the depth of the demolding counterbore 3101 is greater than the thickness of the anti-disengagement protrusion 311.

[0087] As shown in FIGS. 10, 11, 13 and 14, in some embodiments of the present application, the rotation range of the rotating block 300 is A, satisfying: 28°≤A≤45°. It should be noted that due to the elasticity of the rotating block 300, the user can rotate it to the other side, i.e. close to 180°, without considering the actual application or considering the playability. For the above case, referring to FIGS. 13 and 14 again, the rotation range A refers to the angle range that the rotating block 300 needs to rotate when the fresh-keeping box switches between the sealed use state and the open state, in specific application, when the fresh-keeping box is in the sealed use state, the rotating block 300 abuts with the end wall of the accommodating groove 202, when the fresh-keeping box is in the open state, the rotating block 300 is in the natural state after being lifted by the user, for this, A represents the angle between the lower wall of the rotating block 300 and the end wall of the accommodating groove 202 when the rotating block 300 is in the natural state. Alternatively, A=30°. By reasonably designing the rotation angle of the rotating block 300, the blocking protrusion 310 can not only disengage from the exhaust hole 201 after the rotating block 300 is rotated, but also facilitate the re-blocking of the exhaust hole 201 for use under a relatively small rotation amplitude. It is easy to understand that on the one hand, the rotation range of the rotating block 300 is small, the positioning between the blocking protrusion 310 and the exhaust hole 201 is more accurate; on the other hand, small-range rotation can realize the function of the rotating block 300, and the user operation is more simple and fast.

[0088] In addition, the sealing cap needs to cooperate with the box body for sealing. Existing sealing caps have an elastic annular part at the bottom of the sealing cap, which is sealed by pressing against the inner circumferential wall of the box body. However, the existing elastic annular part has a stepped structure, such as "I" shape or inverted "T" shape (not shown in the figure). There is an unstable pressing effect against the inner circumferential wall of the box body. Due to the sealing force and the wrinkles of the elastic annular part, the pressing can cause various deformation effects of the elastic annular part, thereby affecting the sealing performance. Referring to Figures 11 and 12, in some embodiments of this application, a sealing ring 230 is provided on the lower wall of the cap ring 200. The upper end of the sealing ring 230 is integrally connected to the cap ring 200, and the other end extends downward. The sealing ring 230 has an outwardly extending and upwardly curved arc-shaped sealing portion 231 at its lower end, forming a "J" shape. The upper end of the arc-shaped sealing portion 231 has a spherical sealing portion 232. The arc-shaped sealing portion 231 and the spherical sealing portion 232 match to press against and seal the inner wall of the sealed container. In application, the arc-shaped sealing portion 231 has good deformation performance and can directly press against and seal against the inner circumferential wall of the box 400. Furthermore, the spherical sealing portion 232 at the end maintains a closed loop fit with the inner wall of the box 400, preventing any break in the loop that would weaken the sealing effect. Therefore, the sealing ring 230 ensures a tight seal between the sealing cap and the box 400 after the sealing cap is closed, resulting in a more stable sealing effect.

[0089] Referring again to Figures 13 and 14, the food storage container according to an embodiment of this application includes a user-friendly sealing lid according to an embodiment of this application. With the user-friendly sealing lid, when the user closes the sealing lid, their hand is typically positioned to one side of the center of the panel 100. After pressing the sealing lid closed, the hand moves away from the center of the panel 100. At this time, the hand can maintain the same direction of movement while operating the rotating block 300, causing the sealing protrusion 310 to block the vent hole 201, thus achieving a sealing function when closed. Furthermore, both the sealing protrusion 310 and the vent hole 201 can undergo elastic deformation, resulting in a better sealing effect after sealing. Similarly, when the user opens the sealing cover, the hand moves from the outside of the sealing cover toward the center of the panel 100 and lifts the sealing cover upward. At this time, the hand operates the rotating block 300 to move toward the center of the panel 100. After opening the vent 201 to break the vacuum seal, the sealing cover can be opened or lifted in the same direction of movement. By optimizing the position and rotation direction of the rotating block 300, the user's operation is more convenient.

[0090] Other components and operations of the food storage container according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0091] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A closure for easy use, characterised in that include: panel; A cover ring is provided around the panel and sealed to the panel. The cover ring is an elastic component and is provided with a vent hole. A rotating block, one end of which is integrally connected to the cover ring, and the other end of which is rotatably engaged with the cover ring. The rotating block is an elastic component and is provided with a sealing protrusion integrally connected to the rotating block. The sealing protrusion is correspondingly provided with the exhaust hole. The rotating block is adapted to rotate along a side away from the center of the panel to drive the sealing protrusion to block the vent hole; the rotating block is also adapted to rotate along a side toward the center of the panel to drive the sealing protrusion to disengage from the vent hole.

2. The easy-to-use closure of claim 1, wherein: The vent is located on the end face of the cover ring and passes through the cover ring, and the rotating block is connected to the upper wall of the cover ring.

3. The easy-to-use closure of claim 2, wherein: The cover ring is square-shaped, and the vent hole and the rotating block are both located at the corners of the cover ring.

4. The ready-to-use closure of any one of claims 1 to 3, wherein: The end face of the cover ring is provided with a receiving groove, and along the thickness direction of the panel, the projection area of ​​the rotating block is located within the projection area of ​​the receiving groove.

5. The easy-to-use closure of claim 4, wherein: The depth of the receiving groove matches the thickness of the rotating block, and the shape of the receiving groove matches the shape of the rotating block.

6. The easy-to-use, resealable lid of claim 1 or 2 or 3 or 5, wherein: The rotating block has an operating part at its end, which protrudes to open the exhaust port.

7. The easy-to-use closure of claim 1, wherein: The rotating block has an indicator structure, which uses color or symbols to indicate the operation and use of the rotating block.

8. The easy-to-use closure of claim 1, wherein: The bottom wall of the sealing protrusion is provided with a demolding countersunk hole, and the bottom end of the sealing protrusion is provided with an anti-detachment protrusion. The outer diameter of the anti-detachment protrusion is larger than the diameter of the vent hole to block the lower end of the vent hole. The anti-detachment protrusion is adapted to deform toward the center of the demolding countersunk hole to detach from the upper end of the vent hole.

9. The easy-to-use closure of claim 1, wherein: The rotation range of the rotating block is A, which satisfies: 28°≤A≤45°.

10. The easy-to-use closure of claim 1, wherein: The cover ring is adapted to close with the box body, and a sealing ring is integrally connected to the side of the cover ring facing the center of the box body. The sealing ring is adapted to press against the inner peripheral wall of the box body and form a closed cavity with the box body.

11. The easy-to-use closure of claim 10, wherein: The sealing ring is tilted upwards toward the side away from the center of the cover ring. The sealing ring includes an arc-shaped sealing part and a spherical sealing part. The arc-shaped sealing part extends outwards and is bent upwards. The spherical sealing part is integrally connected to the end of the arc-shaped sealing part. The spherical sealing part and the inner peripheral wall of the box body are in a spherical abutment fit.

12. The easy-to-use closure of claim 10, wherein: It also includes a one-way valve, which is disposed on the panel or the cover ring, and is used to extract gas from the closed cavity.

13. The easy-to-use closure of claim 12, wherein: A clamping ring is integrally connected to the side of the cover ring facing the center of the box body. When there is a gap between the sealing ring and the inner peripheral wall of the box body, the clamping ring can press the upper wall of the box body to ensure the sealing of the connection between the cover ring and the box body.

14. A tamper-evident closure for use with a closure of a box, characterised in that include: panel; A cover ring is provided around the panel and is sealed to the panel. The cover ring is an elastic component. A sealing ring and a pressing ring are integrally connected to the side of the cover ring facing the center of the box. The sealing ring is adapted to press against the inner peripheral wall of the box and form a closed cavity with the box. A one-way valve is arranged on the panel or the cover ring, and is used to extract the gas in the closed cavity, and when a gap appears between the sealing ring and the inner circumferential wall of the box body, the compression ring can compress the upper wall of the box body to ensure the sealing of the joint between the cover ring and the box body.

15. The easy-to-use closure of claim 14, wherein: The sealing ring is arranged to be raised towards the side away from the center of the cover ring.

16. The easy-to-use closure of claim 15, wherein: The sealing ring comprises an arc-shaped sealing part and a spherical sealing part, the arc-shaped sealing part is arranged to extend outward and bend upward, and the spherical sealing part is integrally connected to the end of the arc-shaped sealing part, and the spherical sealing part is in spherical surface pressing fit with the inner circumferential wall of the box body.

17. A ready-to-use closure according to any one of claims 14 to 16, characterised in that: One end of the compression ring is connected to the cover ring, and the other end of the compression ring is arranged to be inclined downward along the side away from the center of the panel; when the cover ring is closed and compresses the box body, the two side surfaces of the compression ring are respectively connected with the lower wall of the cover ring and the upper wall of the box body.

18. The easy-to-use, resealable lid of claim 14, wherein: The panel is provided with a mounting hole, and the peripheral wall of the one-way valve is provided with a clamping groove, and the groove wall of the clamping groove and the hole wall of the mounting hole are in elastic sleeve fit to clamp the panel and enable the mounting hole to be in a sealed state.

19. The easy-to-use closure of claim 18, wherein: The distance between the top surface and the bottom surface of the clamping groove gradually decreases towards the side away from the center of the one-way valve, so as to respectively compress the top surface and the bottom surface of the panel.

20. The easy-to-use, resealable lid of claim 18, wherein: The side surface of the clamping groove and the hole wall of the mounting hole are provided with an air passage, and the bottom surface of the clamping groove is provided with an elastic protrusion adapted to press against the bottom surface of the panel to drive the top surface of the clamping groove to press against and seal the top surface of the panel.

21. The easy-to-use, resealable lid of claim 20, wherein: When the one-way valve is matched with an air pump, the elastic protrusion can be deformed by pressing against the bottom surface of the panel to drive the one-way valve to move upward and extract the gas in the closed cavity through the air passage.

22. The easy-to-use, resealable lid of claim 20 or 21, wherein: The elastic protrusion has a spherical surface, and the bottom surface of the elastic protrusion is provided with a deformation groove adapted to allow the elastic protrusion to be concave.

23. A crisper characterized in that, Comprise: a box body; a sealing cover according to any one of claims 1 to 22 for easy use; the sealing cover is used to seal with the box body.

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