CN113955319B - Negative pressure generating structure and preservation box - Google Patents
Negative pressure generating structure and preservation box Download PDFInfo
- Publication number
- CN113955319B CN113955319B CN202111384099.6A CN202111384099A CN113955319B CN 113955319 B CN113955319 B CN 113955319B CN 202111384099 A CN202111384099 A CN 202111384099A CN 113955319 B CN113955319 B CN 113955319B
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- Prior art keywords
- handle
- side wall
- elastic sealing
- sealing gasket
- container
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- 238000004321 preservation Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 53
- 230000009471 action Effects 0.000 claims abstract description 4
- 210000000078 claw Anatomy 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000994 depressogenic effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
- B65D53/06—Sealings formed by liquid or plastic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D55/00—Accessories for container closures not otherwise provided for
- B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
- B65D81/2038—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Closures For Containers (AREA)
Abstract
The invention provides a negative pressure generating structure and a preservation box, comprising a container, an elastic sealing gasket, a pull rod and a handle; the container comprises a side wall provided with a through hole, and an opening is arranged on one side of the side wall; the elastic sealing gasket is arranged at the opening in a sealing way, one end of the pull rod is fixedly connected with the elastic sealing gasket, and the other end of the pull rod penetrates through the through hole and is hinged with the handle positioned at the outer side of the side wall; under the action of resilience force generated by deformation of the elastic sealing gasket, the handle is restrained on the outer surface of the side wall and overturns; the handle is equipped with unlocking position and locking position along the week side of direction of rotation, and the handle rotates between unlocking position and locking position. The invention utilizes the mechanical principle-lever principle, and the elastic sealing gasket is deformed by turning over the handle, so that the volume of the bottom box is changed to achieve the aim of fresh keeping; after the handle is turned to one side of the protruding section, the protruding of the cover body is buckled through the clamping jaw, so that a locking effect is achieved, and the stability of the vacuum degree of the box is ensured.
Description
Technical Field
The invention relates to the technical field of preservation containers, in particular to a negative pressure generating structure and a preservation box.
Background
Along with the continuous progress of society, the living standard of people is continuously improved, and the fresh-keeping box is used as a new convenient fresh-keeping appliance, is more and more used by people, and is continuously moved into daily life of more and more people. The existing vacuum preservation box generally enables negative pressure to be formed in the preservation box in a mode of pumping air in the box through a vacuum pump, reduces gas density to achieve a certain vacuum degree, and achieves the purpose of preservation. However, the vacuum preservation box needs to be pumped by a vacuum pump, and is inconvenient to operate and carry.
There is also a vacuum preservation box on the market, which has a box cover with elasticity and is provided with a one-way exhaust valve. When the operation is performed, the box cover is pressed by hands for many times, and air is discharged out of the fresh-keeping box from the one-way exhaust valve to realize vacuum. However, the box cover needs to have a protective function, and has higher hardness and smaller elasticity, so that the box cover needs to be pressed for multiple times; in addition, the one-way exhaust valve realizes one-way exhaust by means of the pressure difference between the inside and the outside of the preservation box and the gravity of the one-way exhaust valve, so that the reliability and the air tightness are poor. When the preservation box is inverted, the one-way exhaust valve is easy to lose effectiveness, and after a period of time, the pressure difference between the inside and the outside of the preservation box is gradually balanced due to slow air leakage.
Disclosure of Invention
In view of the above, the invention provides a negative pressure generating structure and a preservation box with the negative pressure generating structure, which can effectively solve the problems of inconvenient operation and easy air leakage of the existing vacuum preservation box.
The negative pressure generating structure comprises a container, an elastic sealing gasket, a pull rod and a handle;
the container comprises a side wall provided with a through hole, and an opening is arranged on one side of the side wall;
The elastic sealing gasket is arranged at the opening in a sealing way, one end of the pull rod is fixedly connected with the elastic sealing gasket, and the other end of the pull rod penetrates through the through hole and is hinged with the handle positioned at the outer side of the side wall;
Under the action of resilience force generated by deformation of the elastic sealing gasket, the handle is restrained on the outer surface of the side wall and overturns;
the handle is equipped with unlocking position and locking position along the week side of direction of rotation, and when the handle was in unlocking position, the first plane of handle was in contact with the surface of limit wall, and when the handle was in locking position, the second plane of handle was in contact with the surface of limit wall, and the distance of first plane and handle axis of rotation is less than the distance of second plane and handle axis of rotation, and the handle rotates between unlocking position and locking position.
Preferably, a spring is sleeved on the periphery of the telescopic section of the pull rod, which is positioned between the elastic sealing gasket and the side wall of the container.
Preferably, a claw is arranged on one side of the handle away from the hinge part, and a first clamping strip matched with the claw of the handle is arranged on the outer wall of the container.
Preferably, the negative pressure generating structure is provided with a pair of handles arranged oppositely, and the handles are hinged with the pull rod through the same hinge shaft.
The preservation box comprises a bottom box and an upper cover assembly, wherein the upper cover assembly is provided with the negative pressure generating structure described in any one of the technical schemes;
The upper cover assembly comprises a cover body for forming a container, the cover body comprises a cover body top wall and a cover body side wall, and a through hole is formed in the cover body top wall.
Preferably, the elastic sealing gasket is disposed between the side wall of the cover body and the side wall of the bottom case, and seals the inner space of the bottom case from the outside.
Preferably, the side wall of the cover body is provided with a step, the top end of the side wall of the bottom box is provided with a convex edge matched with the step, and the elastic sealing gasket is clamped between the step and the convex edge.
Preferably, the bottom box is connected with the cover body in a buckling way through a buckling mechanism.
Preferably, the buckle mechanism comprises a handle arranged on the side wall of the bottom box in a rotating mode, a claw is arranged at the movable end of the handle, and a second clamping strip matched with the claw of the handle is arranged on the cover body.
Preferably, the shape of the handle is the same as the shape of the grip.
The beneficial effects of the invention are as follows: the elastic sealing gasket is deformed by turning over the handle by utilizing the mechanical principle-lever principle, so that the volume of the bottom box is changed, the vacuum degree of the bottom box is reduced along with the increase of the volume, and the aim of preserving freshness is fulfilled; after the handle is turned to one side of the protruding section, the clamping strip of the cover body is buckled by the clamping claw to realize a locking effect, so that the stability of the vacuum degree of the box is ensured; the upper cover component and the bottom box are kept sealed by pressing the elastic sealing gasket, so that the traditional sealing ring is eliminated; in addition, the shape of the handle and the shape of the handle are the same, and the handle are the same parts which can be replaced mutually, so that the production cost is reduced.
Drawings
The invention is described in detail below with reference to examples and figures, wherein:
fig. 1 is an assembly view of a negative pressure generating structure.
Fig. 2 is a structural exploded view of the negative pressure generating structure.
Fig. 3 is a schematic structural view of the handle.
Fig. 4 is a cross-sectional view of the negative pressure generating structure in the non-operating state.
Fig. 5 is a cross-sectional view of the negative pressure generating structure in an operating state.
Fig. 6 is an assembled view of the fresh keeping box of the present invention.
Fig. 7 is an exploded view of the structure of the fresh keeping box of the present invention.
Fig. 8 is a cross-sectional view of the fresh box in the non-operating state.
Fig. 9 is a sectional view of the fresh box in an operating state.
Fig. 10 is a graph of volume versus air pressure.
Reference numerals illustrate:
The sealing device comprises a 1-elastic sealing gasket, a 2-pull rod, a 3-handle, a 31-first plane, a 32-second plane, a 33-claw, a 34-first clamping strip, a 4-cover body, a 41-through hole, a 42-step, a 5-hinge shaft, a 6-spring, a 7-bottom box, a 71-convex edge, a 72-handle and a 73-second clamping strip.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Thus, reference throughout this specification to one feature will be used in order to describe one embodiment of the invention, not to imply that each embodiment of the invention must be in the proper motion. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.
The principles of the present invention are described in detail below with reference to the drawings and examples.
As shown in fig. 1-2, the negative pressure generating structure disclosed by the invention comprises a container, an elastic sealing pad 1, a pull rod 2 and a handle 3;
The container comprises a side wall provided with a through hole 41, and an opening is arranged on one side of the side wall;
the elastic sealing gasket 1 is arranged at the opening in a sealing way, one end of the pull rod 2 is fixedly connected with the elastic sealing gasket 1, and the other end of the pull rod passes through the through hole 41 and is hinged with the handle 3 positioned at the outer side of the side wall;
under the action of resilience force generated by deformation of the elastic sealing gasket 1, the handle 3 is restrained on the outer surface of the side wall and overturns;
The handle 3 is equipped with unlocking position and locking position along the week side of direction of rotation, and when handle 3 was in unlocking position, the first plane 31 of handle 3 was in contact with the surface of limit wall, and when the handle was in locking position, the second plane 32 of handle 3 was in contact with the surface of limit wall, and the distance of first plane 31 and handle axis of rotation was less than the distance of second plane 32 and handle axis of rotation, handle 3 rotated between unlocking position and locking position.
In order to achieve the sealing effect, the opening of the container is circumferentially provided with a step 42, and the edge of the elastic sealing gasket 1 is abutted against the step 42 to seal the opening of the container.
As shown in fig. 3, in this embodiment, the main body of the handle 3 is a flat plate, one end of the flat plate is hinged to the pull rod 2 through a hinge shaft 5, and the rotation direction of the flat plate is perpendicular to the plane of the flat plate. When the first plane 31 is abutted against the side wall, the handle 3 is in an upright state; when the second plane 32 abuts against the side wall, the handle 3 is in a lying state. In fig. 3, line B is the line of force applied to the handle by the hinge shaft 5 when the handle 3 is depressed, line C is the line of force applied to the handle by the hinge shaft 5 when the handle 3 is not depressed, and line a is the critical line. Since the length of the line B is longer than that of the line C, the elastic packing 1 is lifted upward when the handle is depressed. Since the line B is perpendicular to the second plane 32, the critical line a is on the left side of the line B, the handle 3 receives an upward supporting force perpendicular to the second plane 32 at the point a, and receives a vertical downward pulling force (force on the line B) at the axis, the handle 3 can be regarded as having a tendency to rotate clockwise, that is, the handle 3 is locked on the sidewall by the force received by the handle at this time, so as to realize the self-locking function.
In the embodiment, by utilizing a mechanical principle-a lever principle, the elastic sealing gasket 1 is deformed and protruded to one side of the through hole 41 by turning the handle 3, so that the volume of another sealed container butted at the opening of the container is increased to form negative pressure. When the handle 3 is turned over to the first plane 31, the deformation amount of the elastic packing 1 is minimized, and the negative pressure is generated to be small, so that it is easily separated from the other container to be docked. When the handle 3 is turned over to the second plane 32, the distance between the first plane 31 and the rotation axis of the handle is smaller than that between the second plane 32 and the rotation axis of the handle, and at this time, the pull rod 2 is lifted up, so that the deformation amount of the elastic sealing gasket 1 is increased, and a large negative pressure is generated on the other container in butt joint.
In fig. 4, the negative pressure generating structure can be seen in a non-operating state, the handle 3 is vertically arranged at the upper part of the container, and the elastic sealing gasket 1 is vertically arranged at the opening at the bottom of the container;
in fig. 5, the working state of the negative pressure generating structure can be seen, at this time, the handle 3 is turned over and attached to the surface of the container, after the handle 3 pulls the pull rod 2 to rise, the middle part of the elastic sealing pad 1 is deformed upwards to arch the volume of the compressed container, and the volume of another container butted with the bottom of the container is correspondingly enlarged to form negative pressure.
In this embodiment, the elastic sealing pad 1 is made of rubber, and in order to assist the elastic sealing pad 1 to rebound after being deformed, a spring 6 is sleeved on the periphery of a telescopic section 21 of the pull rod 2, which is located between the elastic sealing pad 1 and the side wall of the container.
In order to further enhance the self-locking capability of the handle 3, in this embodiment, a claw 33 is provided on the side of the handle 3 away from the hinge portion 31, and a first clamping strip 34 is provided on the outer wall of the container, which cooperates with the claw 33 of the handle 3.
In order to save more effort, the negative pressure generating structure in this embodiment is provided with a pair of handles 3 disposed opposite to each other, and the pair of handles 3 are hinged to the pull rod 2 through the same hinge shaft 5. The two handles 3 are self-locking respectively and share the resilience force of the elastic sealing gasket 1.
In this embodiment, the edge of the elastic gasket 1 may be adhered to the container by adhesive.
In the embodiment, the negative pressure generating structure and the cup body are combined into another product, the container opening of the negative pressure generating structure is in butt joint with the cup mouth of the cup body, and the edge of the elastic sealing gasket 1 is clamped and sealed by the container wall at the periphery of the container opening and the cup wall at the periphery of the cup mouth.
The invention also discloses a preservation box which comprises a bottom box 7 and an upper cover assembly, wherein the upper cover assembly is provided with the negative pressure generating structure described in any embodiment.
As shown in fig. 6-7, the upper cover assembly includes a cover body 4 having an inner cavity, the cover body 4 having a cover body top wall and a cover body side wall extending downwardly from an edge of the cover body top wall, the cover body top wall being provided with a through hole 41. The bottom box 7 is an open top container.
Because the area of the elastic sealing gasket 1 is close to the opening of the container, and the elasticity is better than that of the box cover in the background art, the vacuum effect can be achieved by one-time deformation without exhausting for a plurality of times. In addition, the one-way exhaust valve is omitted, and the structure is simplified.
After the handle 3 locks the elastic sealing pad 1, the handle 3 is difficult to open upwards without external force, so that the deformation state of the elastic sealing pad 1 can be maintained all the time, and the negative pressure state of the bottom box 7 can be further maintained.
In this embodiment, the elastic gasket 1 is disposed between the side wall of the lid body and the side wall of the bottom case, and seals and isolates the inner space of the bottom case 7 and the lid body 4 into two parts.
The inside of the bottom box 7 is in a negative pressure state, so that the stability of sealing between the elastic sealing gasket 1 and the side wall of the bottom box needs to be ensured, and air leakage is avoided. In this embodiment, the elastic sealing gasket 1 is clamped between the side wall of the cover body and the side wall of the bottom box, so that the side wall of the cover body 4 is provided with the step 42 for the purpose of tightening the clamp and facilitating assembly, the top end of the side wall of the bottom box is provided with the convex edge 71 matched with the step 42, and the elastic sealing gasket 1 is paved at the bottom of the step 42 during assembly, and then the convex edge 71 is propped against the bottom of the step 42.
The bottom box 7 is buckled and connected with the cover body 4 through a buckling mechanism. The snap mechanism comprises a handle 72 rotatably arranged on the side wall of the bottom box 7. The shape of the handle 72 is the same as that of the handle 3, and the handle is the same part, so that the production cost can be saved. The movable end of the handle 72 is also provided with the same claw 33 as the handle 3, and the cover 4 is correspondingly provided with a second clamping strip 73 matched with the claw 33 of the handle 72, so that the bottom box 7 and the cover 4 are buckled through the handle.
In fig. 7, 6 handles are arranged around the peripheral side of the bottom box 7, so that the bottom box 7 and the upper cover assembly are ensured to clamp the elastic sealing gasket 1, and the edge stress of the elastic sealing gasket 1 is ensured to be uniform. In addition, the elastic gasket 1 replaces the conventional gasket.
The different configurations of the fresh-keeping box in the inactive state and in the active state can be seen more clearly from figures 8 and 9.
The air pressure value in the fresh-keeping box is changed along with the volume of the contained articles. In this embodiment, the design volume of the bottom case 7 is 1197ml, the expansion volume generated by the deformation of the elastic sealing gasket 1 is 34.2ml, and the relationship among the volume occupied by the articles in the bottom case, the residual volume in the bottom case and the air pressure achieved after expansion is as follows:
| The volume occupied by the articles in the bottom box | Residual volume in bottom box | Air pressure reached after expansion |
| 0% | 100% | 0.972 |
| 50% | 50% | 0.946 |
| 70% | 30% | 0.913 |
| 75% | 25% | 0.897 |
| 80% | 20% | 0.875 |
| 85% | 15% | 0.840 |
| 90% | 10% | 0.778 |
In addition, the change in volume versus air pressure can be seen from fig. 10.
As the preservation box used in the refrigerator, the vacuum degree can be continuously reduced along with the reduction of the temperature after the preservation box is placed in a refrigerating chamber of the refrigerator, so that the preservation box is ensured to have good vacuum preservation effect.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. The negative pressure generating structure is characterized by comprising a container, an elastic sealing gasket, a pull rod and a handle;
the container comprises a side wall provided with a through hole, and an opening is arranged on one side opposite to the side wall;
The elastic sealing gasket is arranged at the opening in a sealing way, one end of the pull rod is fixedly connected with the elastic sealing gasket, and the other end of the pull rod passes through the through hole and is hinged with the handle positioned at the outer side of the side wall;
The negative pressure generating structure is provided with a pair of handles which are oppositely arranged, the handles are hinged with the pull rod through the same hinge shaft, the pull rod is pulled to rise through the overturning handle, so that the elastic sealing gasket deforms and protrudes towards one side of the through hole, and under the action of resilience force generated by deformation of the elastic sealing gasket, the handles are bound on the outer surface of the side wall and are overturned to be attached to the surface of the container;
the periphery of the opening of the container is provided with a step, and the edge of the elastic sealing gasket is abutted against the step to seal the opening of the container;
The handle is equipped with unlocking position and locking position along the week side of direction of rotation, when the handle is in unlocking position, the first plane of handle with the surface butt of limit wall, when the handle is in locking position, the second plane of handle with the surface butt of limit wall, just the first plane with the distance of handle axis of rotation is less than the distance of second plane and handle axis of rotation, the handle is in rotate between unlocking position and the locking position.
2. The negative pressure generating structure according to claim 1, wherein a spring is provided around the extension section of the tension rod between the elastic packing and the container sidewall.
3. The negative pressure generating structure according to claim 1, wherein a claw is provided on a side of the handle away from the hinge portion, and a first catch is provided on an outer wall of the container to be engaged with the claw of the handle.
4. A preservation box comprising a bottom box and an upper cover assembly, characterized in that the upper cover assembly is provided with the negative pressure generating structure according to any one of claims 1-3;
The upper cover assembly comprises a cover body for forming the container, the cover body comprises a cover body top wall and a cover body side wall, and the through hole is formed in the cover body top wall.
5. The crisper of claim 4, wherein said resilient gasket is disposed between said cover side wall and a base side wall of said base and seals an interior space of said base from an exterior.
6. The fresh-keeping box according to claim 5, wherein the side wall of the cover body is provided with a step, the top end of the side wall of the bottom box is provided with a convex edge matched with the step, and the elastic sealing gasket is clamped between the step and the convex edge.
7. The preservation box of claim 4 wherein the bottom box is snap-fit with the cover by a snap-fit mechanism.
8. The crisper of claim 7, wherein said snap mechanism comprises a handle rotatably disposed on a side wall of said base box, a movable end of said handle being provided with a claw, and said cover being provided with a second snap fit with said claw of said handle.
9. The crisper of claim 8, wherein said handle and said grip are the same shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111384099.6A CN113955319B (en) | 2021-11-19 | 2021-11-19 | Negative pressure generating structure and preservation box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111384099.6A CN113955319B (en) | 2021-11-19 | 2021-11-19 | Negative pressure generating structure and preservation box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113955319A CN113955319A (en) | 2022-01-21 |
| CN113955319B true CN113955319B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111384099.6A Active CN113955319B (en) | 2021-11-19 | 2021-11-19 | Negative pressure generating structure and preservation box |
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| JP2016216102A (en) * | 2015-05-21 | 2016-12-22 | ユニ・チャーム株式会社 | Storage container |
| CN207225926U (en) * | 2017-08-18 | 2018-04-13 | 威海戥同测试设备有限公司 | Servo-actuated variable-capacity vacuum fuel tank |
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| KR101923313B1 (en) * | 2017-06-20 | 2018-11-28 | 서병우 | sealing cap for vacuum |
| CN209410792U (en) * | 2018-12-19 | 2019-09-20 | 福建商学院 | A kind of crisper that can exclude air |
| CN216685581U (en) * | 2021-11-19 | 2022-06-07 | 珠海格力电器股份有限公司 | Negative pressure generating structure and preservation box |
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2021
- 2021-11-19 CN CN202111384099.6A patent/CN113955319B/en active Active
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| Publication number | Publication date |
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| CN113955319A (en) | 2022-01-21 |
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