CN211996903U

CN211996903U - Storage container

Info

Publication number: CN211996903U
Application number: CN202020381854.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhu Xiamei
Current assignee: Zhu Xiamei
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-11-24
Anticipated expiration: 2030-03-23

Abstract

The utility model relates to a domestic storage container field especially relates to a storage container. A storage container comprises a box body and a sealing cover; the sealing cover is hinged on the edge of the opening of the box body, and can rotate along the hinged axis of the sealing cover and open/close the opening of the box body; it is characterized in that; the box body is provided with a positioning part, and the sealing cover is in contact with the positioning part and is positioned by the positioning part when in a fully opened state; the force of the positioning member against the cover can be applied as a resistance to clockwise rotation or a resistance to counterclockwise rotation of the cover with respect to the hinge axis. This storing container locating component can realize two ascending simultaneous localizations in the rotation direction to the complete open mode of closing cap, convenient to use.

Description

Storage container

Technical Field

The utility model relates to a domestic storage container field especially relates to a storage container.

Background

Grains such as rice, wheat and beans are basic food sources for human beings, and three meals a day are needed for each family. People either directly use the packaging bag or put the packaging bag into a relatively closed common container made of plastic, ceramic and the like, and the period from the opening of the packaging bag to the completion of eating is relatively long and is easy to deteriorate. Taking rice as an example for explanation: the rice has strong respiration effect, is easy to absorb moisture and smell, attracts pests such as cockroaches and the like to lose freshness and even deteriorate, the optimal storage environment is constant temperature and humidity, the optimal temperature is 16-20 ℃ according to the research of the daily formula, and the optimal temperature is 12-20 ℃ according to the research of China, which proves that the rice is very helpful for keeping the freshness of the rice below the normal temperature.

Based on the requirement of the current families for grain storage, the rice bin becomes the most common grain storage container in China. The sealing cover adopting the turnover structure on the container has the advantage of convenient taking and use. Common turnover structures in the market are arranged on the outer side wall of the container, and the turnover structures can increase the overall occupied space; and with the current ordinary flip structure directly set up in closing cap bottom and inside the container inside wall, when making the closing cap open, the closing cap lateral wall can block with the container inside wall, and the closing cap can only open less opening. In this case, as the invention previously filed by the applicant "seiku products in the market e-commerce limited", a utility model patent entitled "built-in flip structure for container closure", with publication number "CN 209112717U", in which the upper hinge (4) on the closure and the lower hinge (3) in the placement groove (1) rotate while being radially movable with respect to the rotational position; the scheme can realize rotation and positioning of the sealing cover in an opening state. However, with the adoption of the scheme, a user does not only need to rotate the sealing cover during operation, but also needs to realize radial pushing, so that inconvenience exists.

Meanwhile, in the traditional scheme, the scheme of rotating the sealing cover does not generate radial movement, when the sealing cover is in a fully opened state, the maximum opening angle of the sealing cover is realized through the unilateral positioning of the positioning block, and in the scheme, the opening angle of the sealing cover needs to be larger than 90 degrees; so that the cover can not fall over to the other side and cover the box body under the condition of only single-side positioning. When in normal use, the technical scheme is completely applicable; however, if the container is not placed on a flat surface or held by hand, such a lid rotation solution has disadvantages that it is necessary to open the lid by hand to prevent the lid from tipping over.

Disclosure of Invention

In order to solve the above problem, an object of the present invention is to provide a storage container, which can realize two simultaneous locations in the rotation direction for the completely opened state of the sealing cover, and is convenient to use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a storage container comprises a box body and a sealing cover; the sealing cover is hinged on the edge of the opening of the box body, and can rotate along the hinged axis of the sealing cover and open/close the opening of the box body; it is characterized in that; the box body is provided with a positioning part, and the sealing cover is in contact with the positioning part and is positioned by the positioning part when in a fully opened state; the force of the positioning member against the cover can be applied as a resistance to clockwise rotation or a resistance to counterclockwise rotation of the cover with respect to the hinge axis.

The utility model adopts the technical scheme, which relates to a storage container, comprising a box body and a sealing cover; the sealing cover adopts a turnover structure to cover the opening of the box body. On the basis of the scheme, the box body in the scheme is provided with a positioning component, and the positioning component can contact and position the sealing cover in a fully opened state so that the sealing cover can keep the state; in particular, the positioning means are able to provide the closure with a resistance to clockwise/anticlockwise rotation of the closure with respect to the hinging axis, thus achieving simultaneous positioning in both directions of rotation, the closure being able to continue to rotate only in the event of an external force overcoming the above-mentioned force. The scheme is based on the most common hinge scheme, the full-open state of the sealing cover is positioned, the opening angle of the sealing cover does not need to be larger than 90 degrees, and the sealing cover can be conveniently used when the container is not placed on a plane or is held by a hand.

Preferably, the positioning component is a plurality of positioning bulges arranged on the box body, and the positioning bulges are abutted against the edge of the cover to realize positioning. Among the above-mentioned technical scheme, the location part adopts the bellied mode of location, and the protruding edge with the end cover of location offsets and realizes two synchronous location in the direction of rotation.

Preferably, the positioning component at least comprises two positioning bulges, and a positioning groove is formed between the two positioning bulges; when the sealing cover is in a fully opened state, at least part of the edge of the sealing cover is clamped in the positioning groove between the two positioning bulges and is abutted and contacted with the positioning bulges at the two sides of the sealing cover. In the technical scheme, two positioning bulges are adopted to simultaneously position the sealing cover in two rotation directions respectively; in practice, a positioning protrusion is used to block the cap from opening further, and limit the maximum opening angle of the cap, and a larger portion of the positioning protrusion is required to be present in the rotation path of the cap edge along its hinged end, so that the cap edge cannot pass over the positioning protrusion. The other positioning bulge is used for limiting the automatic turnover and covering of the sealing cover under the action of gravity or a small external force; in the path of rotation of the closure edge along its hinged end, the strip of locating projections should present only a small amount of interference; through the setting of magnitude of interference, the edge of face closing cap can cross the protruding business turn over constant head tank of crossing location, can realize the location with this location arch again in the constant head tank.

Preferably, the abutting surfaces of the positioning protrusion and the edge of the sealing cover are both arc surfaces, and the positioning protrusion and the edge of the sealing cover abut by interference arc surfaces to realize positioning. In the technical scheme, the positioning protrusion is abutted against the edge of the sealing cover by adopting an interference cambered surface to realize positioning, and the cambered surface of the positioning protrusion has a certain interference magnitude with the cambered surface of the edge of the sealing cover; the interference is based on the material deformation of the contour of the positioning projection and/or the contour of the closure edge. Based on the scheme, when the sealing cover is in a fully opened state, the positioning bulge and the sealing cover are pressed by adopting a scheme that the cambered surfaces abut against each other, and the sealing cover is pressed more tightly along with the increase of the opening angle of the sealing cover; the maximum opening angle of the sealing cover is reached until the interference magnitude between the cambered surface of the positioning bulge and the cambered surface of the edge of the sealing cover is maximum; this also provides a force to prevent the cover from automatically tipping over.

Preferably, the lid is connected to the box by at least two coaxially arranged hinges, the positioning projection being arranged on the box between the two hinges which are furthest apart. In the technical scheme, the sealing cover and the box body are connected by adopting two or more hinged parts, so that the sealing cover is more stable in the overturning process; further, the positioning projection is disposed between the two hinge portions which are most distant from each other, and positioning stability for the cover is optimal.

Preferably, a lower hinge seat is arranged on the edge of the opening of the box body, and an upper hinge seat is fixedly connected to the bottom surface of the sealing cover at a position corresponding to the lower hinge seat; the upper hinge seat and the lower hinge seat are connected through a rotating shaft.

Preferably, the middle part of the upper end face of the box body is recessed relative to the edge of the upper end face to form a cover groove, and the bottom of the cover groove is provided with an opening; the sealing cover is hinged in the cover groove of the box body, can rotate along the hinged axis of the sealing cover, and seals the opening of the box body in a closed state.

Preferably, the sealing cover comprises a cover plate and a sealing ring connected to the lower end face of the cover plate; the bottom surface of the cover plate is larger than the area enclosed by the outer diameter of the sealing ring, and the positioning part is contacted with the edge of the cover plate and is positioned by the edge. Among the above-mentioned technical scheme, the storing container can be used to deposit article, if can regard as the grain container, the opening supplies the user to get and puts grain and uses, and the closing cap is used for sealing the case mouth, guarantees that inside grain and outside air are isolated when storing, avoids the rotten phenomenon that the long-time contact leads to. Wherein the seal ring identifies an area to be disposed around the edge of the opening, in which case the bottom surface of the cover plate needs to be larger than the area enclosed by the outer diameter of the seal ring; and the edge of the cover plate is more protruded, and the cover plate is matched with the positioning component to realize positioning.

Preferably, the sealing ring comprises a base ring, and an inner sealing wall and an outer sealing wall which are connected to the inner end portion and the outer end portion of the base ring, a sealing opening is formed between the inner sealing wall and the outer sealing wall, and the caliber of the sealing opening is gradually increased from inside to outside; when the sealing cover covers the closed opening, the inner sealing wall and the outer sealing wall of the sealing ring are attached to the upper end face of the box body, so that negative pressure is formed inside the sealing opening. In the above scheme, the sealing ring may be a V-shaped sealing ring or a lip-shaped sealing ring; during the process that the sealing cover turns downwards by means of gravity or hand force of a user, the inner sealing ring and the outer sealing ring of the sealing ring are attached to the upper end face of the body, and air in the sealing groove is extruded out under the action of kinetic energy of the sealing cover to form negative pressure; thereby can guarantee the good leakproofness between closing cap and the box, have the water proof of inner seal ring and outer seal ring two-layer, separate the gas protection.

Preferably, when the cover is closed to close the opening, the cover is embedded in the cover groove; a gap for fingers to extend into the cover for lifting the cover is reserved between the movable end of the cover and the side wall of the cover groove, or a handle part for holding by hand is connected to the movable end of the cover. In the technical scheme, the sealing cover is embedded in the cover groove in a covering state, so that the sealing cover is fused on the top of the box body, and the visual attractiveness is higher; the embedding mode also avoids the possibility that the sealing cover is lifted due to misoperation so that the sealing cover cannot be sealed. In order to facilitate the opening of the sealing cover under the embedding mode, two schemes can be adopted, 1 is to ensure that a gap is reserved between the movable end of the sealing cover and the inner side wall of the cover groove, and the gap is used for fingers to extend into the gap for lifting the sealing cover; 2, a handle part for holding by hand is connected on the movable end of the sealing cover.

Drawings

Fig. 1 is a schematic view of a storage container according to the present invention in a closed state.

Fig. 2 is a schematic view of the storage container in an open state according to the present invention.

Fig. 3 is a schematic view of a first embodiment of the cartridge in this embodiment.

Fig. 4 is a schematic view of a second embodiment of the cartridge in this embodiment.

Fig. 5 is a schematic view showing the cap and the sealing ring separated.

FIG. 6 is a sectional view of the structure of the seal ring.

Fig. 7 is a sectional view of the storage container according to the present invention.

Fig. 8 is an enlarged view of a portion a of fig. 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do 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 should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in FIGS. 1 to 8, the embodiment relates to a storage container, which comprises a box body 1 and a sealing cover 2. The sealing cover 2 is hinged on the edge of the opening of the box body 1, and the sealing cover 2 can rotate along the hinged axis and open/close the opening of the box body 1. The specific hinging mode adopted by the embodiment is that a lower hinging seat 11 is arranged on the edge of the opening of the box body 1, and an upper hinging seat 21 is fixedly connected to the bottom surface of the sealing cover 2 at a position corresponding to the lower hinging seat 11; the upper hinge seat 21 and the lower hinge seat 11 are connected through a rotating shaft. Of course, it is contemplated that the above-described hinge arrangements may be replaced with other conventional hinge arrangements, such as a hinge connection. The key points of the above-mentioned hinge mode are: the hinge axis is always unchanged.

In the embodiment shown in fig. 2-4, the middle of the upper end surface of the box body 1 is recessed relative to the edge of the upper end surface to form a cover groove 14, and the bottom of the cover groove 14 is provided with an opening 15. The cover 2 is hinged in the cover groove 14 of the box body 1, the cover 2 can rotate along the hinge axis and close the opening 15 of the box body 1 in a closed state. As shown in the figure, since the cover groove 14 of the box body 1 is larger than the opening 15 of the housing, when the cover 2 covers and closes the opening 15, the cover 2 is embedded in the cover groove 14. A gap for fingers to extend into for lifting the sealing cover 2 is reserved between the movable end of the sealing cover 2 and the side wall of the cover groove 14, or a handle part 16 for holding by hand is connected to the movable end of the sealing cover 2. In the technical scheme, the sealing cover 2 is embedded in the cover groove 14 in a covering state, so that the sealing cover 2 is integrated with the top of the box body, and the appearance is visually attractive. The embedding mode also avoids the possibility that the cover 2 is lifted due to misoperation so that the cover cannot be sealed. In order to facilitate the opening of the cover 2 in such a way that the cover is inserted, two solutions are adopted, 1 is to leave a gap between the movable end of the cover 2 and the inner side wall of the cover groove 14, and the gap is used for fingers to extend into the gap for lifting the cover 2. The movable end of the cover 2 is connected with a handle part 16 for holding by hand.

The closure 2 comprises a cover plate 22 and a sealing ring 3 attached to the lower end surface of the cover plate 22. The bottom surface of the cover plate 22 is larger than the area enclosed by the outer diameter of the sealing ring 3, and the positioning part is contacted with the edge of the cover plate 22 and is positioned by the edge. Among the above-mentioned technical scheme, the storing container can be used to deposit article, if can regard as the grain container, opening 15 is that the confession user gets puts grain and uses, and closing cap 2 is used for sealing the case mouth, guarantees that inside grain is isolated with the outside air when storing, avoids the rotten phenomenon that long-time contact leads to. The sealing ring 3 therein is intended to be arranged around the edge of the opening 15, in which case the underside of the cover plate 22 must be larger than the area enclosed by the outer diameter of the sealing ring 3. And thus also at the edge of the cover plate 22, adapted to cooperate with the positioning means to achieve positioning. In a further preferred embodiment, the sealing ring 3 includes a base ring 31, and an inner sealing wall 32 and an outer sealing wall 33 connected to the inner and outer ends of the base ring 31, wherein a sealing opening 34 is formed between the inner sealing wall 32 and the outer sealing wall 33, and the diameter of the sealing opening 34 gradually increases from the inside to the outside. When the cover 2 is closed to close the opening 15, the inner sealing wall 32 and the outer sealing wall 33 of the sealing ring 3 are attached to the upper end surface of the box body 1, so that negative pressure is formed inside the sealing opening 34. In the above scheme, the sealing ring may be a V-shaped sealing ring or a lip-shaped sealing ring. In the process that the sealing cover 2 turns downwards depending on gravity or the force of the hand of a user, the inner sealing ring 3 and the outer sealing ring 3 of the sealing ring are attached to the upper end face of the body, and air in the sealing groove is extruded out under the action of kinetic energy of the sealing cover 2 to form negative pressure. Thereby can guarantee the good leakproofness between closing cap 2 and the box, have the water proof, the gas proof protection of interior sealing ring 3 and outer sealing ring 3 two-layer.

On the basis of the scheme, the box body 1 is provided with a positioning part, and the sealing cover 2 is in contact with the positioning part and is positioned by the positioning part when in a fully opened state. The urging force of the positioning member against the cover 2 can be used as the resistance when the cover 2 rotates clockwise or the resistance when the cover 2 rotates counterclockwise with respect to the hinge axis. The box body 1 in the scheme is provided with a positioning component which can contact and position the sealing cover 2 in a fully opened state, so that the sealing cover 2 can keep the state. In particular, the positioning means are able to provide the closure 2 with a resistance to the clockwise/anticlockwise rotation of the closure 2 with respect to the hinging axis, thus achieving a simultaneous positioning in both directions of rotation, the closure 2 being able to continue to rotate only in the event of an external force overcoming the above-mentioned force. The solution is based on the most common hinging solution, the opening angle of the cover 2 does not need to be larger than 90 degrees for positioning the fully opened state of the cover 2, and the solution can be conveniently used when the container is not placed on a plane or is held by a hand.

In a specific technical scheme, the positioning component is a plurality of positioning protrusions 17 arranged on the box body 1, and the positioning protrusions 17 are abutted against the edge of the sealing cover 2 to realize positioning. In the above technical scheme, the positioning part adopts the mode of the positioning protrusion 17, and the positioning protrusion 17 abuts against the edge of the end cover to realize the simultaneous positioning in two rotation directions. The cover 2 is connected to the box 1 by at least two coaxially arranged hinge portions, and the positioning projection 17 is arranged on the box 1 between the two hinge portions which are furthest apart. The hinge portion described above may be understood as a single hinge portion by connecting the upper hinge base 21 and the lower hinge base 11 via a rotating shaft. In the technical scheme, the sealing cover 2 is connected with the box body 1 by adopting two or more hinged parts, so that the sealing cover 2 is more stable in the overturning process. Further, positioning the positioning projection 17 between the two hinge portions which are most distant from each other is optimal for the positioning stability of the closure 2.

Based on the above scheme, there are two embodiments:

the 1 st embodiment is shown in figures 7 and 8: the positioning bulge 17 and the edge of the sealing cover 2 are both cambered surfaces, and the positioning bulge 17 and the edge of the sealing cover 2 are positioned by interference cambered surface butting. In the technical scheme, the positioning protrusion 17 and the edge of the sealing cover 2 are abutted by interference cambered surfaces to realize positioning, and the cambered surface of the positioning protrusion 17 and the cambered surface of the edge of the sealing cover 2 have certain interference magnitude. The interference is based on the material deformation of the contour of the positioning projection 17 and/or the contour of the edge of the closure 2. Based on the scheme, when the sealing cover 2 is in a fully opened state, the positioning bulge 17 and the sealing cover 2 are pressed by a scheme that the cambered surfaces abut against each other, and the sealing cover 2 is pressed more tightly along with the increase of the opening angle of the sealing cover 2. And reaching the maximum opening angle of the sealing cover 2 until the interference between the cambered surface of the positioning bulge 17 and the cambered surface of the edge of the sealing cover 2 is maximum. This also provides a force to prevent the cover from automatically tipping over.

The 2 nd embodiment is schematically illustrated: the positioning component at least comprises two positioning bulges 17, and a positioning groove is formed between the two positioning bulges 17. When the sealing cover 2 is in a fully opened state, at least part of the edge of the sealing cover 2 is clamped into the positioning groove between the two positioning bulges 17 and is abutted against the positioning bulges 17 on the two sides of the edge. In the above technical solution, two positioning protrusions 17 are adopted to simultaneously position the sealing cap 2 in two rotation directions, respectively. In practice, a positioning projection 17 is used to block the closure 2 from opening further, limiting the maximum opening angle of the closure 2, and a greater part of the positioning projection 17 is required in the path of rotation of the edge of the closure 2 along its hinged end, so that the edge of the closure 2 cannot pass over the positioning projection 17. The other positioning bulge 17 is used for limiting the automatic turnover and cover closing of the sealing cover 2 under the gravity or the small external force. The strip of locating projections 17 should present only a small amount of interference in the path of rotation of the edge of the closure 2 along its hinged end. Through the setting of magnitude of interference, the edge of closing cap 2 can cross the setting protrusion 17 and get in and out the constant head tank on the one hand, can realize the location again with this strip of setting protrusion 17 in the constant head tank.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

1. A storage container comprises a box body (1) and a sealing cover (2); the sealing cover (2) is hinged on the edge of the opening (15) of the box body (1), and the sealing cover (2) can rotate along the hinged axis and open/close the opening (15) of the box body (1); it is characterized in that; the box body (1) is provided with a positioning part, and the sealing cover (2) is in contact with the positioning part and is positioned by the positioning part when being in a fully opened state; the acting force of the positioning component on the sealing cover (2) can be used as the resistance when the sealing cover (2) rotates clockwise or anticlockwise relative to the hinging axis.

2. A storage container as defined in claim 1, wherein: the positioning component is a plurality of positioning bulges (17) arranged on the box body (1), and the positioning bulges (17) are abutted against the edge of the sealing cover (2) to realize positioning.

3. A storage container as defined in claim 2, wherein: the positioning component at least comprises two positioning bulges (17), and a positioning groove is formed between the two positioning bulges (17); when the sealing cover (2) is in a fully opened state, at least part of the edge of the sealing cover (2) is clamped into the positioning groove between the two positioning bulges (17) and is propped against the positioning bulges (17) on the two sides of the sealing cover.

4. A storage container as defined in claim 2, wherein: the positioning protrusion (17) and the sealing cover (2) are both cambered surfaces, and the positioning protrusion (17) and the sealing cover (2) are positioned by interference cambered surface abutment.

5. A storage container as claimed in any one of claims 2 to 4, wherein: the cover (2) is connected with the box body (1) through at least two coaxially arranged hinge parts, and the positioning bulge (17) is arranged on the box body (1) between the two hinge parts which are farthest away.

6. A storage container as claimed in any one of claims 1 to 4, wherein: a lower hinge seat (11) is arranged on the edge of the opening (15) of the box body (1), and an upper hinge seat (21) is fixedly connected to the bottom surface of the sealing cover (2) at a position corresponding to the lower hinge seat (11); the upper hinge seat (21) is connected with the lower hinge seat (11) through a rotating shaft.

7. A storage container as claimed in claim 6, wherein: the middle part of the upper end face of the box body (1) is recessed relative to the edge of the upper end face to form a cover groove (14), and the bottom of the cover groove (14) is provided with an opening (15); the sealing cover (2) is hinged in a cover groove (14) of the box body (1), the sealing cover (2) can rotate along the hinged axis and seal the opening (15) of the box body (1) in a closed state.

8. A storage container as defined in claim 7, wherein: the sealing cover (2) comprises a cover plate (22) and a sealing ring (3) connected to the lower end face of the cover plate (22); the bottom surface of the cover plate (22) is larger than the area enclosed by the outer diameter of the sealing ring (3), and the positioning part is contacted with the edge of the cover plate (22) and is positioned by the edge.

9. A storage container as defined in claim 8, wherein: the sealing ring (3) comprises a base ring (31), an inner sealing wall (32) and an outer sealing wall (33) which are connected to the inner end portion and the outer end portion of the base ring (31), a sealing opening (34) is formed between the inner sealing wall (32) and the outer sealing wall (33), and the caliber of the sealing opening (34) is gradually increased from inside to outside; when the sealing cover (2) covers the closed opening (15), the inner sealing wall (32) and the outer sealing wall (33) of the sealing ring (3) are attached to the upper end face of the box body (1), so that negative pressure is formed inside the sealing opening (34).

10. A storage container as defined in claim 7, wherein: when the sealing cover (2) covers and closes the opening (15), the sealing cover (2) is embedded in the cover groove (14); a gap for fingers to stretch into the cover (2) is reserved between the movable end of the cover (2) and the side wall of the cover groove (14), or a handle part (16) for holding by hand is connected to the movable end of the cover (2).