CN216685581U - Negative pressure generating structure and preservation box - Google Patents
Negative pressure generating structure and preservation box Download PDFInfo
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- CN216685581U CN216685581U CN202122862146.5U CN202122862146U CN216685581U CN 216685581 U CN216685581 U CN 216685581U CN 202122862146 U CN202122862146 U CN 202122862146U CN 216685581 U CN216685581 U CN 216685581U
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- handle
- side wall
- sealing gasket
- elastic sealing
- negative pressure
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Abstract
The utility model provides a negative pressure generating structure and a preservation box, which comprise 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 manner, 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 to be hinged with the handle positioned on the outer side of the side wall; under the action of resilience force generated by the deformation of the elastic sealing gasket, the handle is bound on the outer surface of the side wall to turn over; the handle is provided with an unlocking position and a locking position along the circumferential side of the rotating direction, and the handle rotates between the unlocking position and the locking position. The utility model utilizes the mechanical principle-lever principle, and the elastic sealing gasket is deformed by turning the handle, so that the volume of the bottom box is changed to achieve the aim of fresh keeping; the handle is turned to one side of the protruding section and then buckles the protrusion of the cover body through the clamping jaws to achieve the locking effect, and the stability of the vacuum degree of the box is guaranteed.
Description
Technical Field
The utility model relates to the technical field of preservation containers, in particular to a negative pressure generating structure and a preservation box.
Background
With the continuous progress of society and the continuous improvement of people's living standard, the preservation box is used by more and more people as a new convenient preservation utensil, has continuously gone into more and more people's daily life. The existing vacuum preservation box generally adopts a mode that a vacuum pump pumps air out of the box to form negative pressure in the preservation box and reduce gas density to reach a certain vacuum degree, thereby achieving 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 in the market, which has a box cover with elasticity and is provided with a one-way exhaust valve. During operation, the box cover is pressed by hands for many times, and air is discharged out of the preservation box from the one-way exhaust valve to realize vacuum. However, the box cover needs to play a role in protection, and the box cover is high in hardness and low in elasticity, so that the box cover needs to be pressed for many 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 self gravity, and has poor reliability and air tightness. When the preservation box is inverted, the one-way exhaust valve is easy to lose efficacy, and after a period of time, air can be slowly leaked to gradually balance the pressure difference inside and outside the preservation box.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model 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 opposite to the side wall;
the elastic sealing gasket is arranged at the opening in a sealing manner, 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 to be hinged with the handle positioned on the outer side of the side wall;
under the action of resilience force generated by the deformation of the elastic sealing gasket, the handle is bound on the outer surface of the side wall to turn over;
the handle is equipped with the position of unblock and locking position along the week side of rotation direction, and when the handle was in the position of unblock, the first plane of handle and the surface butt of limit wall, when the handle was in the locking position, the second plane of handle and the surface butt 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 is being unlocked and is being rotated between the position and the locking position.
Preferably, 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, is sleeved with a spring.
Preferably, one side of the handle, which is far away from the pull rod, is provided with a clamping jaw, and the outer wall of the container is provided with a first clamping strip matched with the clamping jaw of the handle.
Preferably, the negative pressure generating structure is provided with a pair of handles which are oppositely arranged, and the handles are hinged with the pull rod through the same hinge shaft.
A preservation box comprises a bottom box and an upper cover assembly, wherein the upper cover assembly is provided with a negative pressure generating structure recorded in any one technical scheme;
the upper cover assembly comprises a cover body 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 lid body and the side wall of the back box, and seals the inner space of the back box 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 and the cover body are buckled and connected through a buckling mechanism.
Preferably, buckle mechanism is including rotating the handle that sets up on end box lateral wall, and the expansion end of handle is equipped with the jack catch, is equipped with the jack catch matched with second card strip with the handle on the lid.
Preferably, the shape of the handle is the same as that of the handle.
The utility model has the beneficial effects that: the elastic sealing gasket is deformed by turning over the handle by utilizing a mechanical principle-a 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 keeping fresh is fulfilled; after the handle is turned to one side of the convex section, the clamping strip of the cover body is buckled through the clamping jaw to realize the 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 handle and the hand-picking part have the same shape and are the same parts which can be replaced mutually, so that the production cost is reduced.
Drawings
The utility model is described in detail below with reference to examples and figures, in which:
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 sectional view of the negative pressure generating structure in a non-operating state.
Fig. 5 is a sectional view of the negative pressure generating structure in an operating state.
Fig. 6 is an assembly view of the crisper of the present invention.
Fig. 7 is an exploded view of the construction of the crisper of the present invention.
Fig. 8 is a cross-sectional view of the crisper in a non-operating state.
Fig. 9 is a sectional view of the crisper in an operating state.
FIG. 10 is a graph of the change in volume versus air pressure.
Description of reference numerals:
1-elastic sealing gasket, 2-pull rod, 3-handle, 31-first plane, 32-second plane, 33-clamping jaw, 34-first clamping strip, 4-cover body, 41-through hole, 42-step, 5-hinge shaft, 6-spring, 7-bottom box, 71-convex edge, 72-handle and 73-second clamping strip.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present 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 merely illustrative of the utility model and do not limit the utility model.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the utility model, and does not imply that every embodiment of the utility model must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
The principles of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1-2, the negative pressure generating structure disclosed by the utility model comprises a container, an elastic sealing gasket 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 opposite to the side wall;
the elastic sealing gasket 1 is arranged at the opening in a sealing manner, one end of the pull rod 2 is fixedly connected with the elastic sealing gasket 1, and the other end of the pull rod penetrates through the through hole 41 and is hinged with the handle 3 positioned on the outer side of the side wall;
under the action of resilience force generated by the deformation of the elastic sealing gasket 1, the handle 3 is bound on the outer surface of the side wall to turn over;
the handle 3 is equipped with along the week side of direction of rotation and unlocks the position and locks the position, and when handle 3 was in the unlocking position, the first plane 31 of handle 3 and the surface butt of limit wall, when the handle was in the locking position, the second plane 32 of handle 3 and the surface butt of limit wall, and the distance of first plane 31 and handle axis of rotation is less than the distance of second plane 32 and handle axis of rotation, and handle 3 rotates between the unlocking position and locking position.
In order to achieve the sealing effect, a step 42 is arranged on the circumference of the opening of the container, and the edge of the elastic sealing gasket 1 abuts against the step 42 to seal the opening of the container.
As shown in fig. 3, the main body of the handle 3 in this embodiment is a flat plate, one end of which is hinged to the pull rod 2 through a hinge shaft 5, and the rotation direction of which is perpendicular to the plane of the flat plate. When the first plane 31 abuts 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 flat state. In fig. 3, line B is a direction line of a force applied to the handle by the hinge shaft 5 when the handle 3 is depressed, line C is a direction line of a force applied to the handle by the hinge shaft 5 when the handle 3 is not depressed, and line a is a critical line. Since the length of the line B is greater than that of the line C, the elastic packing 1 is lifted upward when the handle is pressed. Because 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 vertically downward pulling force (force on the line B) on the axis, the handle 3 can be regarded as having a tendency of clockwise rotation, namely the handle 3 is locked on the side wall by the received force at the moment, and the self-locking function is realized.
In the embodiment, by utilizing a mechanical principle-lever principle, the elastic sealing gasket 1 is deformed and protruded towards one side of the through hole 41 by turning the handle 3, so that the volume of another sealed container butted with the opening of the container is increased to form negative pressure. When the handle 3 is turned to the first plane 31, the deformation amount of the elastic sealing gasket 1 is minimized, and the negative pressure is generated to be small, thereby being easily separated from another container to be docked. When the handle 3 is turned over to the second plane 32, since the distance between the first plane 31 and the rotation axis of the handle is smaller than the distance between the second plane 32 and the rotation axis of the handle, the pull rod 2 is lifted up, which causes the deformation of the elastic sealing gasket 1 to increase, and further generates a larger negative pressure to another container to be butted.
In fig. 4, the non-working state of the negative pressure generating structure can be seen, the handle 3 is vertically positioned at the upper part of the container, and the elastic sealing gasket 1 is vertically positioned at the opening at the bottom of the container;
the working state of the negative pressure generating structure can be seen in fig. 5, 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 gasket 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 expanded to form negative pressure.
In this embodiment, the elastic sealing gasket 1 is made of rubber, and in order to assist the elastic sealing gasket 1 to rebound after deformation, the spring 6 is sleeved on the periphery of the telescopic section 21 of the pull rod 2, which is located between the elastic sealing gasket 1 and the side wall of the container.
In order to further enhance the self-locking capability of the handle 3, the handle 3 is provided with a hinge portion 31, and is hinged with the pull rod 2 through the hinge portion 31, a claw 33 is arranged on the side far away from the pull rod 2, and a first clamping strip 34 matched with the claw 33 of the handle 3 is arranged on the outer wall of the container.
In order to save more labor, the negative pressure generating structure in this embodiment is provided with a pair of handles 3 which are oppositely arranged, and the pair of handles 3 are hinged with the pull rod 2 through the same hinge shaft 5. The two handles 3 are self-locked respectively and share the resilience force of the elastic sealing gasket 1.
In this embodiment, the edge of the elastic sealing gasket 1 can be glued to the container by means of glue.
In the embodiment, the negative pressure generating structure and a cup body are combined into another product, the opening of the container of the negative pressure generating structure is in butt joint with the cup opening 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 opening of the container and the cup wall at the periphery of the cup opening.
The utility model also discloses a fresh-keeping 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 recorded in any embodiment.
As shown in fig. 6-7, the upper cover assembly includes a cover 4 having an inner cavity, the cover 4 having a cover top wall and a cover side wall extending downward from the edge of the cover top wall, the cover top wall being provided with a through hole 41. The bottom case 7 is a container with an open top.
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 technology, the vacuum effect can be achieved by one-time deformation without exhausting for many times. In addition, a one-way exhaust valve is eliminated, and the structure is simplified.
After the handle 3 locks the elastic sealing gasket 1, the handle 3 is difficult to turn upwards and open without external force, so that the deformation state of the elastic sealing gasket 1 can be maintained all the time, and the negative pressure state of the bottom box 7 is further maintained.
In this embodiment, the elastic sealing gasket 1 is disposed between the side wall of the lid body and the side wall of the bottom case, and seals and separates the inner space of the bottom case 7 and the lid body 4 into two parts.
The inside of the bottom box 7 needs to ensure the stability of the sealing between the elastic sealing gasket 1 and the side wall of the bottom box in a negative pressure state, so as to avoid air leakage. In this embodiment, the elastic sealing gasket 1 is clamped between the side wall of the cover and the side wall of the bottom box, and for clamping and facilitating the assembly, the side wall of the cover 4 is provided with a step 42, the top end of the side wall of the bottom box is provided with a convex edge 71 matched with the step 42, the elastic sealing gasket 1 is firstly laid at the bottom of the step 42 during the assembly, and then the convex edge 71 is jacked at 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 a claw 33 the same 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 by the handle.
In fig. 7, 6 handles are arranged around the periphery of the bottom case 7, so that the bottom case 7 and the upper cover assembly are ensured to clamp the elastic sealing gasket 1, and the edge of the elastic sealing gasket 1 is ensured to be stressed uniformly. In addition, the elastic sealing gasket 1 replaces the traditional sealing ring.
The different configurations of the crisper in the inactive and active states 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 designed volume of the bottom case 7 is 1197ml, the volume 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 reached after the volume expansion is as follows:
in addition, the variation of volume versus air pressure can be seen in fig. 10.
As the preservation box used in the refrigerator, after being placed in a refrigerating chamber of the refrigerator, the vacuum degree can be continuously reduced along with the reduction of the temperature, and the preservation box is ensured to have a good vacuum preservation effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A 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 manner, 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 to be hinged with the handle positioned on the outer side of the side wall;
under the action of resilience force generated by the deformation of the elastic sealing gasket, the handle is bound on the outer surface of the side wall to turn over;
the handle is equipped with the position of unblock and locking position along direction of rotation's week, works as the handle is in when the position of unblock, the first plane of handle with the surface butt of limit wall, works as when the handle is in the 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 position of unblock and the locking position.
2. The negative pressure generating structure as claimed in claim 1, wherein a spring is sleeved on the periphery of the expansion section of the pull rod between the elastic sealing gasket and the side wall of the container.
3. The negative pressure generating structure as claimed in claim 1, wherein a jaw is provided on a side of the handle away from the pull rod, and a first locking strip is provided on an outer wall of the container to be engaged with the jaw of the handle.
4. The negative pressure generating structure as claimed in claim 1, wherein the negative pressure generating structure is provided with a pair of handles oppositely disposed, and the pair of handles are hinged with the pull rod through the same hinge shaft.
5. A fresh-keeping box comprising a bottom box and an upper cover assembly, wherein the upper cover assembly is provided with the negative pressure generating structure of any one of claims 1 to 4;
the upper cover assembly comprises a cover body forming the container, the cover body comprises a cover body top wall and a cover body side wall, and the cover body top wall is provided with the through hole.
6. The crisper of claim 5, wherein the resilient gasket is disposed between the lid side wall and the bottom side wall of the bottom compartment and seals the interior space of the bottom compartment from the exterior.
7. The crisper of claim 6, wherein a step is provided on the side wall of the lid body, a protruding edge engaged with the step is provided on the top end of the side wall of the bottom casing, and the elastic sealing gasket is sandwiched between the step and the protruding edge.
8. The crisper of claim 5, wherein the bottom box is snap-fit connected to the lid by a snap-fit mechanism.
9. The crisper of claim 8, wherein the buckle mechanism comprises a handle rotatably disposed on the sidewall of the bottom box, a claw is disposed at a movable end of the handle, and a second clamping strip is disposed on the cover and is engaged with the claw of the handle.
10. The crisper of claim 9, wherein the handle and the grip are the same shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122862146.5U CN216685581U (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 |
|---|---|---|---|
| CN202122862146.5U CN216685581U (en) | 2021-11-19 | 2021-11-19 | Negative pressure generating structure and preservation box |
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| Publication Number | Publication Date |
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| CN216685581U true CN216685581U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122862146.5U Active CN216685581U (en) | 2021-11-19 | 2021-11-19 | Negative pressure generating structure and preservation box |
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| CN (1) | CN216685581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955319B (en) * | 2021-11-19 | 2024-04-26 | 珠海格力电器股份有限公司 | Negative pressure generating structure and preservation box |
-
2021
- 2021-11-19 CN CN202122862146.5U patent/CN216685581U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955319B (en) * | 2021-11-19 | 2024-04-26 | 珠海格力电器股份有限公司 | Negative pressure generating structure and preservation box |
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