CN210972305U - Push type vacuum preservation box - Google Patents

Abstract

The utility model discloses a push type vacuum preservation box, a cavity is arranged on a box cover, a piston is connected in the cavity in a sliding way, an air outlet is arranged in the cavity, a first one-way valve is arranged at the air outlet, a one-way structure for communicating the cavity with the outside when the piston moves towards the first one-way valve is arranged on the piston, a driving piece is connected in the cavity in a sliding way, and a linkage piece for linking the driving piece and the piston to move reversely is arranged between the driving piece and the piston; like this the driving piece can come the linkage piston to remove in the cavity with the help of the linkage piece when removing in the cavity, linkage piston keeps away from first check valve when removing with the driving piece pushing down, it produces the negative pressure to form airtight chamber between piston and cavity diapire and makes first check valve open, reach the purpose of taking the air out in the box body, otherwise then the air in airtight intracavity is discharged with the help of one-way structure, so reciprocal evacuation purpose and convenient operation are laborsaving, and preservation box itself takes the evacuation function certainly, and convenient to use and practicality.

Description

Push type vacuum preservation box

Technical Field

The utility model relates to a preservation box field, more specifically say, it relates to a push type vacuum preservation box.

Background

With the development of society and the advancement of science and technology, people have higher and longer requirements on the fresh-keeping quality and duration of food. In order to keep food fresh in a container, air in the container is usually pumped away to make the container in a vacuum state, so that the food in the container is kept fresh, and a fresh-keeping box is generally a box body which looks like a seal and is used for sealing the box body so as to prevent the box body from contacting with external air, so that the aim of keeping fresh is fulfilled. However, although the air inside and outside the box body is not communicated, the air still exists in the box body, and oxygen in the air is oxidized with food in the box body, so that the freshness of the food is influenced, and the freshness keeping time is limited.

A vacuum preservation box appears in the market at present, finishes the step of drawing the vacuum through drawing the vacuum equipment with the help of extra supporting when using, and the evacuation equipment all brings a lot of inconveniences in using and carrying, if the evacuation equipment loses or when damaging, the step of drawing the vacuum just can not be accomplished to the preservation box to just lead to the preservation box can not play fresh-keeping effect.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a push type vacuum preservation box has the advantage of the evacuation operation of being convenient for.

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

the utility model provides a push type vacuum preservation box, be provided with the cavity on the box cover, sliding connection has the piston in the cavity, it is provided with first check valve to be provided with venthole and venthole department in the cavity, be provided with on the piston and communicate cavity and external one-way structure when it removes towards first check valve, sliding connection has the driving piece in the cavity, be provided with the linkage piece that links both reverse movements between driving piece and the piston.

Like this the driving piece can come the linkage piston to remove in the cavity with the help of the linkage piece when removing in the cavity, linkage piston keeps away from first check valve when removing with the driving piece pushing down, it produces the negative pressure to make first check valve open to form airtight chamber between piston and cavity diapire, reach the purpose of taking the air out in the box body, otherwise then the air in airtight intracavity is discharged with the help of the one-way construction, so reciprocal evacuation purpose and convenient operation are laborsaving, and preservation box itself takes the evacuation function certainly, it is more convenient and practical to use.

The utility model discloses further set up: the linkage piece is including the connecting rod of cross arrangement, the pivot of being connected with the rotation of cavity inner wall is worn to be equipped with by the junction of connecting rod, the both ends of connecting rod are articulated with driving piece and piston respectively, all be provided with on piston and the driving piece and supply the gliding spout of connecting rod tip along cavity width direction.

The two connecting rods are connected in a rotating mode through the rotating shaft in the middle, the rotating point is located at a fixed position of the inner wall of the cavity, and therefore when the driving piece is pressed down manually, the piston is driven to ascend under the action of the connecting rods to achieve vacuumizing of the box body.

The utility model discloses further set up: an elastic piece for connecting the driving piece and the piston is arranged between the driving piece and the piston.

Set up the elastic component between driving piece and piston and can play the effect of resetting, after pushing down the completion evacuation with the driving piece, when loosening the driving piece, driving piece and piston can remove dorsad and resume to initial condition under the effect of elastic component to reach the automatic re-setting purpose, also save the operation that people mentioned the driving piece simultaneously, the operation is light laborsaving more.

The utility model discloses further set up: the elastic part comprises a spring, a telescopic shaft for connecting the driving part and the piston is arranged between the driving part and the piston, and the spring is sleeved on the telescopic shaft.

Further through set up the telescopic shaft in spring inside, when not influencing spring axial deformation, can play the effect of radial support to the spring for driving piece and piston can follow the axial stability deformation when removing, avoid the spring to lead to the condition of damaging easily radially completely.

The utility model discloses further set up: the distance from the hinge point of the connecting rod and the driving piece to the rotating shaft is less than the distance from the other end of the connecting rod to the rotating shaft.

Set up like this and pushing down the driving piece when removing, the piston corresponds the distance that removes in the cavity can be bigger than the driving piece all the time, orders about the operation that the driving piece removed more easily laborsaving to a certain extent like this, alleviates work load.

The utility model discloses further set up: the one-way structure includes annular, sealing washer and ventilative groove, the annular is seted up at the outer wall of piston, the sealing washer cup joints in the annular, ventilative groove is seted up in the annular and is communicate with external, the width of annular and ventilative groove is greater than the diameter of sealing washer.

Like this at the in-process sealing washer that the piston removed towards first check valve direction and can be pushed away from first check valve, expose partial ventilative groove this moment, the gas in the cavity can be followed ventilative groove and discharged, and at the in-process that the piston removed towards first check valve dorsad, the sealing washer can be pushed and be close to first check valve, the sealing washer plays sealed effect this moment, the gas in the cavity can not be followed ventilative groove and discharged to can produce the negative pressure in the cavity and open first check valve.

The utility model discloses further set up: an air inlet is formed in the box cover, a second one-way valve is arranged on the air inlet, and a pressure detection piece is mounted on the box cover.

After the box body is vacuumized, the box body is difficult to open subsequently, so that the second one-way valve can be opened to enable outside air to enter the box body, and the box cover can be opened easily; through the setting of pressure measurement spare, the effect of suggestion can be played to pressure measurement spare, can learn the degree of evacuation in the box body through pressure measurement spare at the in-process of evacuation.

The utility model discloses further set up: the box body is provided with an annular edge, and the annular edge is sleeved with a sealing ring abutted to the box cover.

At first the sealing ring can play the leakproofness of box body and lid junction, avoids external air to enter into the box body from the junction, and the ring limit can play the positioning action to the sealing ring simultaneously, and the sealing ring can be torn open moreover and wash the change.

The utility model discloses further set up: the both sides of lid articulate has the hasp, be provided with the knot piece that supplies hasp lock joint to fix on the box body.

The box body and the box cover are detachably connected in a buckle connection mode, installation or disassembly can be achieved only through overturning the buckles, and the box is simple in structure and convenient and fast to assemble and disassemble.

The utility model discloses further set up: the linkage piece comprises a gear and racks, the racks are respectively positioned on two sides of the gear and meshed with the gear, one of the racks is fixed on the driving piece, the other rack is fixed on the piston, and the gear is rotationally connected to the inner wall of the chamber.

Like this through removing the driving piece and can order about piston reverse movement to reach the purpose of evacuation, overall structure is simple and the atress degree of consistency is better moreover, the difficult condition that damages that appears.

To sum up, the utility model discloses following beneficial effect has:

the linkage piece for linking the driving piece and the piston to move reversely is arranged between the driving piece and the piston, so that the piston can be driven to move upwards to realize vacuumizing by pressing the driving piece downwards, the structure is simple, the operation is easy and labor-saving, the function of vacuumizing of the preservation box is realized without an additional tool, and the preservation box has better practicability; and the driving piece can be restored to the original position under the action of the elastic piece after losing the action of artificial force application, partial operation is omitted, and the workload in the vacuumizing process is effectively reduced.

Drawings

FIG. 1 is an overall structural view of embodiment 1;

FIG. 2 is an exploded view of example 1;

FIG. 3 is a sectional view of embodiment 1;

FIG. 4 is a structural view of a piston and a driver in embodiment 1;

fig. 5 is a structural view of the piston and the driving member in embodiment 2.

Reference numerals: 1. a box body; 2. a box cover; 3. a hasp; 4. buckling blocks; 5. a seal ring; 6. encircling; 7. a chamber; 71. a closed cavity; 8. an air outlet; 9. a first check valve; 10. a piston; 11. a ring groove; 12. a seal ring; 13. a ventilation groove; 14. a drive member; 15. a connecting rod; 16. a rotating shaft; 17. a chute; 18. a slider; 19. a spring; 20. a telescopic shaft; 21. an air inlet; 22. a second one-way valve; 23. a pressure detecting member; 24. a rack; 25. a gear; 26. a shaft body.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: a push type vacuum preservation box is shown in figures 1 and 2 and comprises a box body 1 and a box cover 2, wherein the box cover 2 and the box body 1 are fixed in a buckling mode, hasps 3 hinged with the box cover 2 are arranged on two sides of the box cover 2, and buckling blocks 4 for buckling the hasps 3 are correspondingly arranged on a box body 11, so that the box cover 2 and the box body 1 can be detachably connected, and the disassembly and the assembly are convenient and rapid; in order to improve the leakproofness between lid 2 and the box body 1, be provided with sealing ring 5 between box body 1 and lid 2, wherein be provided with ring limit 6 on the roof of box body 1, be provided with simultaneously on sealing ring 5 with ring limit 6 complex sunken, thereby can make the stable installation on box body 1 of sealing ring 5, lid 2 limit portion compresses tightly sealing ring 5 when lid 2 is fixed with box body 1 and ensures the leakproofness of junction, ensure that external air can't enter into in the box body 1.

As shown in fig. 3, a cavity 7 is formed in the middle of the box cover 2, an air outlet 8 communicated with the interior of the box body 1 is formed in the bottom of the cavity 7, a first one-way valve 9 is arranged at the air outlet 8, and the first one-way valve 9 enables air to enter the cavity 7 only from the interior of the box body 1; simultaneously sliding connection has piston 10 in the cavity 7, be provided with on this piston 10 and communicate cavity 7 and external one-way structure when it moves towards first check valve 9, cavity 7 and external intercommunication when piston 10 moves towards first check valve 9 direction promptly, when piston 10 moves towards first check valve 9 direction dorsad, form airtight chamber 71 between piston 10 and the 7 diapalls of cavity, thereby it can constantly take out the air in the box body 1 and realize the evacuation to order about piston 10 reciprocating motion, preservation box itself just takes the evacuation function from the area like this, thereby need not with the help of extra instrument can, it is more convenient and the practicality is better to use.

As shown in fig. 3 and 4, the one-way structure includes a ring groove 11, a seal ring 12, and a ventilation groove 13, wherein the ring groove 11 is opened on a side wall of the piston 10, the seal ring 12 is sleeved in the ring groove 11, and the ventilation groove 13 is opened in the ring groove 11 and communicates with the sealed cavity 71 and the outside, wherein a width of the ring groove 11 is larger than a diameter of the seal ring 12, and a width of the ventilation groove 13 is identical to a width of the ring groove 11, so that when the piston 10 moves away from the first check valve 9, the seal ring 12 is located at a position where the ring groove 11 is close to the first check valve 9 under the action of an inner wall of the chamber 7, and at this time, the seal ring 12 can perform a sealing function, so that the sealed; when the piston 10 slides towards the first check valve 9, the sealing ring 12 is located at a position where the ring groove 11 is far away from the first check valve 9, and at the moment, the ventilation groove 13 is communicated with the closed cavity 71 and the outside, so that air in the closed cavity 71 can be discharged, and the subsequent vacuumizing operation is facilitated.

As shown in fig. 3 and 4, a driving member 14 slidably connected to the chamber 7 is disposed above the piston 10 corresponding to the chamber 7, the driving member 14 is a pressing block, and a linkage member linking the driving member 14 and the driving member 14 to move in opposite directions is disposed between the driving member 14 and the driving member 14, the linkage member includes two connecting rods 15 arranged in a crossing manner, a rotating shaft 16 rotatably connected to an inner wall of the chamber 7 penetrates through an intersection of the connecting rods 15, both ends of the connecting rods 15 are respectively hinged to the driving member 14 and the piston 10, both the piston 10 and the driving member 14 are provided with sliding grooves 17 sliding along a width direction of the chamber 7, the sliding grooves 17 are slidably connected with sliding blocks 18, and ends of the connecting rods 15 are hinged to the sliding blocks; thereby can realize the linkage of driving piece 14 and piston 10 antiport, linkage piston 10 keeps away from first check valve 9 and removes when pushing down the removal with driving piece 14, it produces the negative pressure to form airtight chamber 71 between piston 10 and cavity 7 diapire and makes first check valve 9 open, reach the purpose of taking the air in the box body 1 out, otherwise then discharge the air in the airtight chamber 71 with the help of the one-way structure, it is laborsaving to reciprocate to reach the evacuation purpose and convenient operation, and the preservation box itself takes the evacuation function certainly, it is more convenient and practical to use.

As shown in fig. 4, a spring 19 is arranged between the driving member 14 and the piston 10 to connect the driving member 14 and the piston 10, two ends of the spring 19 are respectively fixed to the driving member 14 and the piston 10, wherein the spring 19 is symmetrically arranged, and a telescopic shaft 20 penetrates through the spring 19, two ends of the telescopic shaft 20 are respectively fixed to the driving member 14 and the piston 10, and the spring 19 can be supported by the telescopic shaft 20 in a good radial direction, so that the spring 19 can be stably deformed in a telescopic manner along an axial direction, and the situation of damage caused by excessive bending is not easy to occur; the driving piece 14 and the piston 10 can be well reset by the arrangement of the spring 19, and the driving piece 14 and the piston 10 can be restored when the driving piece 14 is released, so that the operation that people need to lift the driving piece 14 is omitted; in addition, the distance from the hinge point of the connecting rod 15 and the driving part 14 to the rotating shaft 16 is smaller than the distance from the other end to the rotating shaft 16, so that the distance of the piston 10 moving in the chamber 7 is always larger than that of the driving part 14, and the whole operation is easier and more labor-saving; wherein the telescopic shaft 20 and the spring 19 are uniformly arranged in 4 numbers around the circumference, thereby leading the whole motion balance to be better.

As shown in fig. 1, an air inlet 21 communicated with the inside of the box body 1 is arranged on the box cover 2, a second one-way valve 22 is installed at the air inlet 21, the second one-way valve 22 comprises a rubber plug body, and the air inlet 21 is blocked by the rubber plug body, so that when the box cover 2 cannot be opened in a vacuum state in the box body 1, the rubber plug body is taken out to allow outside air to enter the box body 1, and the box cover 2 can be smoothly opened; the box cover 2 is also provided with a pressure detection piece 23, the pressure detection piece 23 in the embodiment is a rubber bulge with a hollow inner part, the rubber bulge and the rubber plug body are integrally arranged, and the inner part of the rubber bulge is communicated with the inside of the box body 1, so that the rubber bulge can completely sink after the box body 1 is vacuumized, people can conveniently and timely know that the inside of the box body 1 is vacuumized, and the effect of sign prompt is achieved; and rubber bulge and rubber buffer body form a whole like this, reduce accessory quantity and effective reduce cost.

The implementation principle of the embodiment is as follows: firstly, the box cover 2 and the box body 1 are covered, the buckle 3 is buckled with the buckle block 4 to realize fixation, then the driving piece 14 is pressed to move downwards to link the piston 10 in the cavity 7 to move upwards, the spring 19 is compressed in the process, negative pressure is formed in the closed cavity 71 to open the first one-way valve 9 when the piston 10 moves away from the first one-way valve 9, the box body 1 is vacuumized, the driving piece 14 and the piston 10 recover to the original position under the action of the spring 19 after the piston 10 is loosened, the piston 10 moves downwards to discharge air in the closed cavity 71, and the box body 1 can be vacuumized by pressing the driving piece 14 in a reciprocating mode; when the box cover 2 needs to be opened subsequently, the hasp 3 and the buckling block 4 are firstly released, then the second one-way valve 22 is opened, outside air enters the box body 1, and the box cover 2 can be normally opened at the moment.

Example 2: a push type vacuum preservation box is shown in figure 5, and is different from the structure of the linkage part in embodiment 1, wherein the linkage part is uniformly provided with 4 linkage parts around the circumference, the linkage part comprises a gear 25 and racks 24, the two racks 24 are a group, one end of one rack 24 is fixed on a piston 10, one end of the other rack 24 is fixed on a driving part 14, the two racks 24 are respectively meshed with two sides of a middle gear 25, a shaft body 26 is fixed in the middle of the gear 25 and is rotatably connected to the inner wall of a chamber 7 through the shaft body 26; an elastic member is additionally arranged in the middle of the piston 10 and the driving member 14 and connected with the piston and the driving member; can order about piston 10 to move up through pushing down driving piece 14 like this and realize taking out to the cavity 7 in with the air in the box body 1, it resumes the normal position under the elastic component effect after loosening driving piece 14, and piston 10 moves to the normal position in step simultaneously, so constantly presses driving piece 14 and loosens and can accomplish the operation of evacuation, and overall structure is simple and the atress degree of consistency is better, the difficult condition that appears damaging.

The embodiment of this specific implementation is the preferred embodiment of the present invention, not so limiting the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The utility model provides a push type vacuum preservation box, includes box body (1) and lid (2), characterized by: be provided with cavity (7) on lid (2), sliding connection has piston (10) in cavity (7), be provided with venthole (8) and venthole (8) department in cavity (7) and be provided with first check valve (9), be provided with on piston (10) and communicate cavity (7) and external one-way structure when it removes towards first check valve (9), sliding connection has driving piece (14) in cavity (7), be provided with the linkage piece that links both reverse movements between driving piece (14) and piston (10).

2. The push type vacuum preservation box of claim 1, wherein: the linkage piece is including connecting rod (15) that the intersection set up, pivot (16) of being connected with cavity (7) inner wall rotation are worn to be equipped with in the intersection of connecting rod (15), the both ends of connecting rod (15) are articulated with driving piece (14) and piston (10) respectively, all be provided with on piston (10) and driving piece (14) and supply connecting rod (15) tip to follow gliding spout (17) of cavity (7) width direction.

3. The push type vacuum preservation box of claim 2, wherein: an elastic piece for connecting the driving piece (14) and the piston (10) is arranged between the driving piece and the piston.

4. The push type vacuum preservation box of claim 3, wherein: the elastic part comprises a spring (19), a telescopic shaft (20) for connecting the driving part (14) and the piston (10) is arranged between the driving part and the piston, and the spring (19) is sleeved on the telescopic shaft (20).

5. The push type vacuum preservation box of claim 2, wherein: the distance from the hinge point of the connecting rod (15) and the driving piece (14) to the rotating shaft (16) is less than the distance from the other end to the rotating shaft (16).

6. The push type vacuum preservation box of claim 1, wherein: unidirectional structure includes annular (11), sealing washer (12) and ventilative groove (13), the outer wall at piston (10) is seted up in annular (11), sealing washer (12) cup joint in annular (11), ventilative groove (13) are seted up in annular (11) and are communicate with the external world, the width of annular (11) and ventilative groove (13) is greater than the diameter of sealing washer (12).

7. The push type vacuum preservation box of claim 1, wherein: an air inlet (21) is formed in the box cover (2), a second one-way valve (22) is arranged on the air inlet (21), and a pressure detection piece (23) is installed on the box cover (2).

8. The push type vacuum preservation box of claim 1, wherein: the box body (1) is provided with an annular edge (6), and the annular edge (6) is sleeved with a sealing ring (5) which is abutted to the box cover (2).

9. The push type vacuum preservation box of claim 1, wherein: the two sides of the box cover (2) are hinged with hasps (3), and a buckle block (4) for buckling and fixing the hasps (3) is arranged on the box body (1).

10. The push type vacuum preservation box of claim 1, wherein: the linkage piece comprises a gear (25) and racks (24), the racks (24) are respectively positioned on two sides of the gear (25) and meshed with the gear, one rack (24) is fixed on the driving piece (14), the other rack (24) is fixed on the piston (10), and the gear (25) is rotatably connected to the inner wall of the chamber (7).

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