CN112849771B

CN112849771B - Vacuumizing device and vacuumizing container

Info

Publication number: CN112849771B
Application number: CN202011643181.1A
Authority: CN
Inventors: 金善浩
Original assignee: Taizhou Juma Technology Co ltd
Current assignee: Taizhou Juma Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-10-18
Anticipated expiration: 2040-12-30
Also published as: CN112849771A

Abstract

The invention relates to a vacuumizing device which comprises a cover body, a decorative body, a key, a piston and a key cover. The cover includes a base and a recess. The concave part is protruded upwards to be a supporting part. A first accommodating groove is formed between the supporting part and the concave part. The inner space of the supporting part forms a second accommodating groove. The decorative body is accommodated in the first accommodation groove. The key is accommodated in the inner cavity of the decorative body and can move up and down. The supporting part is sleeved on the key elastic piece. The lower part of the piston is accommodated in the second accommodating groove, and the upper part of the piston is accommodated in the inner cavity of the key and can move up and down. The key cover is arranged above the keys, the keys are fixedly connected with the key cover, and the keys, the piston and the key cover synchronously move up and down. A first cavity is formed between the container main body and the cover body, and a second cavity is formed between the piston and the bottom wall of the second accommodating groove. The second holding tank diapire establishes normally closed aspirating hole, and the piston diapire establishes normally closed exhaust hole. The multifunctional vacuum pump has the advantages that the key cover is rotated or pressed to realize vacuumizing, pressure maintaining and inflation, and the multifunctional vacuum pump is convenient to operate and carry.

Description

Vacuumizing device and vacuumizing container

Technical Field

The invention relates to the technical field of vacuumizing devices, in particular to a vacuumizing device and a vacuumizing container.

Background

The vacuum-pumping device is used for various occasions requiring vacuum environment, such as food preservation, clothes storage and the like, and currently, auxiliary tools such as a suction pump and the like are generally required to be arranged on the vacuum-pumping device to pump gas in the vacuum-pumping device to form vacuum environment. When in use, the auxiliary tool is connected to the vacuumizing device firstly, and then vacuumizing operation is carried out, so that the assembling and disassembling process is complicated; when the vacuum pumping is carried out, a large amount of labor is needed to form a vacuum environment in the device, and time and labor are wasted; the auxiliary tool is large in size and inconvenient to carry and store; after the auxiliary tool is lost or damaged, the vacuum pumping work can not be continuously carried out, so that the matching use of the existing vacuum pumping device and the auxiliary tool has multiple defects.

Disclosure of Invention

Technical problem to be solved

In view of the above disadvantages and shortcomings of the prior art, the present invention provides a vacuum extractor and a vacuum container, which solves the technical problems that the prior vacuum extractor must be used in combination with auxiliary tools, and is complicated to operate, time-consuming, labor-consuming, inconvenient to carry and store;

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

in a first aspect, an embodiment of the present invention provides a vacuum pumping device for performing vacuum pumping operation on a container main body, including a cover body, a decoration body, a key, a piston, and a key cover;

the cover body is used for closing the opening of the container body and comprises a base part and a concave part formed by extending downwards along the circular inner edge of the base part; the concave part is a hollow cylinder and is provided with a circumferential side wall and a bottom wall; the bottom wall of the depressed part protrudes upwards to form a cylindrical supporting part; the supporting part and the concave part are coaxially arranged; a first accommodating groove is formed between the outer circumferential side wall of the supporting part and the inner circumferential side wall of the depressed part; the inner space of the supporting part forms a second accommodating groove;

the decorative body is accommodated in the first accommodating groove and connected with the circumferential side wall of the recessed portion; the decorative body is provided with a cylindrical inner cavity which is communicated up and down;

the key is accommodated in the inner cavity of the decorative body and can move up and down in the inner cavity of the decorative body; the key is provided with an inner cavity which is communicated up and down;

the key elastic piece is sleeved on the circumferential side wall of the supporting part and at least partially positioned in the inner cavity of the key, one end of the key elastic piece abuts against the inner wall of the key, and the other end of the key elastic piece abuts against the bottom wall of the first accommodating groove;

the lower part of the piston is accommodated in the second accommodating groove, the upper part of the piston is accommodated in the inner cavity of the key, and the piston can move up and down in the second accommodating groove;

the key cover is arranged above the key and fixedly connected with the key, and the piston is arranged to synchronously move up and down with the key and the key cover;

a first cavity a is formed between the container main body and the cover body, and a second cavity b is formed between the piston and the bottom wall of the second accommodating groove;

the bottom wall of the second accommodating groove is provided with an air exhaust hole for exhausting the gas in the first cavity a into the second cavity b; the bottom wall of the piston is provided with an exhaust hole for exhausting the gas in the second chamber b to the external environment; the air suction hole and the air exhaust hole are kept closed in a normal state;

when the key cover, the keys and the piston synchronously move upwards, the air suction hole is opened, and the exhaust hole is closed; when the key cover, the keys and the piston synchronously move downwards, the exhaust hole is opened, and the air suction hole is closed;

according to the invention, the piston comprises a piston body and a piston head;

the piston head is annular and extends downwards along the inner ring of the piston head to form the piston body;

the piston body is a hollow cylinder or a circular truncated cone and is provided with a circumferential side wall and a bottom wall, and the piston body is at least partially accommodated in the second accommodating groove of the cover body;

according to the invention, two first limiting bulges are formed on the inner circumferential side wall of the depressed part in a circumferential extending manner, and the two first limiting bulges are symmetrically arranged along the radial direction of the depressed part; one end of the first limiting bulge extends upwards for a certain distance to form a third limiting bulge;

the two fourth limiting protrusions extend along the axial direction of the recessed portion on the inner circumferential side wall of the recessed portion, and the two fourth limiting protrusions are symmetrically arranged along the radial direction of the recessed portion;

the fourth limiting bulge is respectively positioned at different circumferential positions with the first limiting bulge and the third limiting bulge; the top of the fourth limiting bulge is flush with the top of the third limiting bulge;

according to the invention, the decoration body comprises an annular decoration part and an insertion part which is positioned at the lower side of the decoration part and is coaxially arranged;

the insertion part is a hollow cylinder, the top surface and the bottom surface of the insertion part are open, and the insertion part is provided with a circumferential side wall; the inner cavity of the decoration part and the inner cavity of the insertion part form the cylindrical inner cavity of the decoration body;

the circumferential side wall of the insertion part is provided with two matching grooves in a radial symmetrical mode, the matching grooves extend downwards along the axial direction of the insertion part and are opened towards the bottom of the insertion part;

when the decorative body is connected to the cover body, the side wall of one side of the matching groove and the side wall of one side, close to the adjacent third limiting protrusion, of the fourth limiting protrusion are positioned on the same vertical plane, and the side wall of the other side of the matching groove and the side wall of one side, close to the adjacent fourth limiting protrusion, of the third limiting protrusion are positioned on the same vertical plane;

according to the invention, the key comprises a key body which is a hollow cylinder, the top surface and the bottom surface of the key body are open, and the key body is provided with a circumferential side wall; the lower end surface of the key body extends outwards along the radial direction to form a circular flange;

the peripheral side wall of the key main body is provided with two avoidance grooves in a radial symmetrical mode, the avoidance grooves extend downwards along the axial direction of the key main body and face the bottom opening of the key main body;

the part of the flange connected with the side wall of one side of the avoidance groove extends outwards along the radial direction of the key main body to form a matching bulge;

the outer diameter of the matching protrusion is larger than the inner diameter of the insertion part, and the matching protrusion can move up and down in a space formed among the matching groove, the fourth limiting protrusion and the third limiting protrusion;

according to the invention, a second limiting bulge is formed by extending the other end of the first limiting bulge downwards to the bottom wall of the concave part;

when the key cover is pressed downwards to the lowest position, the key cover can rotate for a certain angle relative to the decorative body so as to drive the matching bulges of the keys to be clamped in a space formed by the first limiting bulge and the second limiting bulge and fix the keys on the cover body;

according to the invention, two air inflation holes are formed in the bottom wall of the first accommodating groove, and the bottom wall of the first accommodating groove protrudes upwards to form two limiting parts;

the two air inflation holes are symmetrically arranged along the radial direction of the first accommodating groove; the two limiting parts are symmetrically arranged along the radial direction of the first accommodating groove; the limiting part is a hollow cylinder; the limiting part is arranged around the inflation hole;

the limiting part is at least partially positioned in a space formed by the matching groove, the fourth limiting bulge and the third limiting bulge adjacent to the fourth limiting bulge and is close to one side of the fourth limiting bulge;

according to the invention, the key cover comprises a cylindrical key cover main body and a key cover assembling part which is positioned below the key cover main body and is coaxially arranged; the key cover assembly part is a hollow cylinder and is provided with a circumferential side wall;

a part of the key is accommodated in the cavity of the key cover assembly part and is fixedly connected with the key cover assembly part;

the bottom wall of the key cover main body is provided with an exhaust groove extending along the radial direction, and the exhaust groove is communicated with two sides of the circumferential side wall of the key cover assembling part;

according to the invention, a plurality of cover body mounting bulges are uniformly arranged on the inner circumferential side wall of the depressed part,

a plurality of decoration body mounting openings are uniformly formed in the outer circumferential side wall of the insertion part;

the decorative body mounting openings are consistent with the mounting bulges of the cover body in number;

the insertion part is inserted into the first accommodating groove of the concave part, and when the cover body mounting bulge is clamped in the decorative body mounting opening, the decorative body is connected to the cover body;

on the other hand, the embodiment of the invention also provides a vacuum-pumping container, which comprises a container main body and a vacuum-pumping device, wherein the vacuum-pumping device is used for closing the opening of the container main body, and a cover body sealing ring is arranged between the cover body of the vacuum-pumping device and the container main body;

(III) advantageous effects

The invention has the beneficial effects that: according to the vacuum-pumping device provided by the invention, the vacuum-pumping device is arranged at the opening of the container main body, and the first cavity can be conveniently vacuumized, pressurized and inflated by simply rotating, pressing and loosening the keys of the vacuum-pumping device without the aid of an auxiliary tool, so that the vacuum-pumping device is convenient to operate and carry; through set up the depressed part that holds decorative body, button, piston and button lid on the lid, reduced the volume of lid, be convenient for evacuating device's accomodating is carried.

Drawings

FIG. 1 is a perspective view of an evacuation device in accordance with an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 isbase:Sub>A cross-sectional view of FIG. 2 at A-A;

FIG. 4 is a cross-sectional view of the key cover of FIG. 2 in the uppermost position;

FIG. 5 is a perspective view of a cover in an embodiment of the present invention;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a perspective view of a piston in an embodiment of the present invention;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a cross-sectional view at B-B of FIG. 8;

FIG. 10 is a perspective view of a key in an embodiment of the present invention;

FIG. 11 is a perspective view of a garnish according to an embodiment of the present invention;

FIG. 12 is a perspective view of a key cover in an embodiment of the present invention;

FIG. 13 is a front view of FIG. 12;

FIG. 14 is a bottom view of FIG. 12;

FIG. 15 is a perspective view of the key cover at the uppermost position when the first chamber is being evacuated by the evacuation device of the embodiment of the present invention;

FIG. 16 is a perspective view of the key cover in the lowermost position when the first chamber is evacuated by the vacuum evacuation device according to the embodiment of the present invention;

FIG. 17 is a perspective view of the evacuation device maintaining pressure in the first chamber, in accordance with an embodiment of the present invention;

FIG. 18 is a perspective view of the key cover in the highest position when the first chamber is being inflated by the vacuum apparatus of the present invention;

FIG. 19 is a perspective view of the key cover in the lowest position when the first chamber is being inflated by the vacuum pumping device according to the embodiment of the present invention.

[ instruction of reference ]

1: a container body;

2: a cover body; 20: a base; 21: an annular step portion of the cover; 22: a recessed portion; 221: an air exhaust hole; 222: an inflation hole; 223: a first limit protrusion; 224: a second limit bulge; 225: a third limiting bulge; 226: a fourth limit bulge; 23: a support portion; 24: a limiting part; 25: a cover body is provided with a bulge; 26: a cover body sealing ring; 27: a first accommodating groove; 28: a second accommodating groove;

3: a piston; 30: a piston main body; 31: an exhaust hole; 32: a piston head; 33: a piston seal ring; 34: an annular accommodating groove;

4: pressing a key; 40: a key body; 41: a mating protrusion; 42: an avoidance groove; 43: a flange; 44: a key assembly part; 45: a key mounting surface; 46: a key mounting port; 47: a first annular step part of the key; 48: a key elastic member; 491: a second annular step part of the key; 492: a third annular step part of the key;

5: a decorative body; 51: a mating groove; 52: a decorative body mounting opening; 53: a decorative part; 54: a garnish insertion portion;

6: a key cover; 61: a key cover body; 62: a key cover assembly part; 63: a key cover mounting surface; 64: a key cover mounting boss; 65: an exhaust groove; 66: a key cover annular step portion;

7: an inflation guide rod; 71: a guide rod elastic member; 72: a guide rod sealing ring;

8: an air extraction gasket;

9: an exhaust gasket;

a: a first chamber;

b: a second chamber.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. As used herein, the terms "upper", "lower", and the like are used with reference to the orientation of FIG. 1.

Referring to fig. 1 to 4, an embodiment of the present invention provides a vacuum evacuation apparatus for performing a vacuum evacuation operation on a container body 1, including: lid 2, piston 3, button 4, decorative body 5 and button lid 6.

The container body 1 may be made of plastic, glass, ceramic, stainless steel, or other materials, and is suitable for containing various articles. The lid body 2 is used to close the opening of the container body 1. The openings of the cover 2 and the container body 1 are detachably connected, and may be formed in various manners such as a snap-fit connection and a screw connection. A lid packing 26 for improving the sealing property between the lid 2 and the container body 1 is provided between them.

Referring to fig. 5-6, the cover 2 includes a base 20. The base 20 is provided with an outer edge and an inner edge which is rounded. A recess 22 is formed along the inner edge of the base 20, and the recess 22 is used for accommodating the piston 3, the key 4, the decorative body 5 and the key cover 6, thereby reducing the volume of the cover body 2 and facilitating the storage and carrying of the vacuum-pumping device. The outer edge of the base 20 is circular in the present embodiment by way of example, but the shape of the outer edge of the base 20 is not limited by the present invention.

The recess 22 is a hollow cylinder having a circumferential side wall and a bottom wall. The inner diameter of the recess 22 is smaller than the inner diameter of the inner edge of the base 20. The top of the recess 22 and the inner wall of the base 20 together define an annular step 21 of the cover.

A plurality of mounting protrusions 25 are uniformly provided on the inner circumferential side wall of the recess 22. The mounting projection 25 is used to couple the garnish body 5 to facilitate positioning and mounting of the cover body 2 and the garnish body 5. Alternatively, the inner circumferential side wall of the recess 22 is uniformly provided with several planes on which the mounting projections 25 are provided. While the embodiment shown in fig. 6 depicts four cover mounting protrusions 25, more or less than four cover mounting protrusions 25 may be provided, and particularly, four cover mounting protrusions 25 may be provided depending on the size of the cover 2, preferably, in order to ensure the stability of the coupled decorative body 5 and cover 2.

Two first limiting protrusions 223 are formed on the inner circumferential side wall of the recessed portion 22 in a circumferentially extending manner, and the two first limiting protrusions 223 are symmetrically arranged in the radial direction of the recessed portion 22. A second limiting protrusion 224 is formed by extending one end of the first limiting protrusion 223 downwards to the bottom wall of the recess 22, and a third limiting protrusion 225 is formed by extending the other end of the first limiting protrusion 223 upwards for a certain distance. Two fourth limiting protrusions 226 are formed on the inner circumferential side wall of the recessed portion 22 after extending for a certain distance in the axial direction, and the two fourth limiting protrusions 226 are symmetrically arranged in the radial direction of the recessed portion 22. The fourth stopper protrusion 226 is located at different circumferential positions from the first stopper protrusion 223, the second stopper protrusion 224, and the third stopper protrusion 225, respectively. The top of the fourth stop projection 226 is flush with the top of the third stop projection 225. Referring to fig. 5, adjacent fourth and

third stopper projections

226 and 225 are arranged in a counterclockwise direction in the circumferential direction of the lid body 2, as viewed from the top of the lid body 2 downward. In practical applications, the adjacent fourth limiting protrusions 226 and the third limiting protrusions 225 may also be arranged in a clockwise direction, and the present embodiment is exemplified by a counterclockwise arrangement.

A cylindrical support portion 23 is formed by the bottom wall of the recessed portion 22 projecting upward. The support portion 23 is disposed coaxially with the recess portion 22. A first receiving groove 27 is formed between the outer circumferential side wall of the supporting portion 23 and the inner circumferential side wall of the recess 22, and the first receiving groove 27 is used for receiving the decorator 5, the button 4, and the button cover 6. The inner space of the support portion 23 forms a second receiving groove 28, and the second receiving groove 28 is used to receive the piston 3.

Fig. 7 to 9 show a perspective view, a plan view and a sectional view of the piston 3, respectively.

The piston 3 is a one-piece member including: a piston head 32 and a piston body 30. The piston head 32 is annular and extends downwardly along an inner ring of the piston head 32 to form the piston body 30. The piston body 30 is a hollow cylinder or a hollow truncated cone having a circumferential side wall and a bottom wall. The outer circumference of the piston body 30 is extended outwardly to form a ring-shaped receiving groove 34 for receiving a piston packing 33. The piston body 30 and the annular receiving groove 34 are received in the second receiving groove 28 of the lid body 2. The piston packing 33 is used to improve the sealing performance between the piston 3 and the lid body 2.

Referring to fig. 4, a second chamber b is formed between the piston 3 and the bottom wall of the second receiving groove 28. A first chamber a is formed between the container body 1 and the lid body 2.

The bottom wall of the second receiving groove 28 is provided with a pumping hole 221 for pumping the gas in the first chamber a into the second chamber b. The suction packing 8 is disposed in the suction hole 221, and normally closes the suction hole 221. The air exhaust sealing gasket 8 is of an integrated structure and comprises a sealing main body and an umbrella-shaped structure positioned above the sealing main body. The sealing body is received and fixed inside the suction hole 221, and a gap for gas to flow through is formed between the sealing body and the inner wall of the suction hole 221. The umbrella structure is disposed at the upper side of the bottom wall of the second receiving groove 28, the outer diameter of the umbrella structure is larger than the inner diameter of the pumping hole 221, the umbrella structure is made of an elastic material and is normally used to close the pumping hole 221, and when the air pressure in the first chamber a is sufficiently large relative to the air pressure in the second chamber b, the umbrella structure of the pumping gasket 8 is deformed and moves upward to open the pumping hole 221.

The bottom wall of the piston body 30 is provided with a vent hole 31 for venting the gas in the second chamber b to the outside of the lid 2, i.e. to the external environment. The exhaust gasket 9 is disposed in the suction hole 31 and normally closes the exhaust hole 31. The vent gasket 9 has the same structure, material and operation as the suction gasket 8. The sealing body of the exhaust gasket 9 is accommodated and fixed inside the exhaust hole 31, and a gap for gas circulation exists between the sealing body and the inner wall of the exhaust hole 31. The umbrella structure of the exhaust packing 9 is disposed at the upper side of the bottom wall of the piston body 30, the outer diameter of the umbrella structure is larger than the inner diameter of the suction hole 31, and is used to close the exhaust hole 31 in a normal state, and when the air pressure in the second chamber b is sufficiently large relative to the external air pressure, the umbrella structure of the exhaust packing 9 is deformed and moves upward to open the exhaust hole 31.

Referring to fig. 3, 4 and 6, the bottom wall of the first receiving groove 27 is provided with two gas filling holes 222, and the two gas filling holes 222 are symmetrically arranged along the radial direction of the first receiving groove 27 for filling the gas of the external environment into the first chamber a. The bottom wall of the first receiving groove 27 protrudes upward to form two limiting parts 24, and the two limiting parts 24 are symmetrically arranged along the radial direction of the first receiving groove 27. The stopper 24 is a hollow cylinder. The height of the stopper portion 24 is higher than the bottom of the fourth stopper protrusion 226 or flush with the bottom of the fourth stopper protrusion 226. It should be noted that 1 or 2 inflation holes 222 may be disposed on the bottom wall of the first receiving groove 27, such that one of the limiting portions 24 is disposed around the inflation hole 222, or the two limiting portions 24 are disposed around the inflation holes 222, respectively. In the present embodiment, 2 inflation holes 222 are preferably provided to increase the speed of inflating the first chamber a, and the following description will be given by taking the example of providing 2 inflation holes 222.

Referring to fig. 11 to 19, the stopper portion 24 is provided at a position between the third stopper protrusion 225 and the fourth stopper protrusion 226 adjacent to the fourth stopper protrusion 226, and the stopper portion 24 is provided adjacent to the fourth stopper protrusion 226.

The inflation guide 7 is disposed in the inflation hole 222 and is movable up and down in the axial direction of the inflation hole 222 for opening or closing the inflation hole 222. The outer diameter of the inflation guide rod 7 is smaller than the inner diameter of the limiting part 24, and the limiting part 24 plays a role in guiding the movement of the inflation guide rod 7. The portion of the inflation guide 7 located in the first chamber a is sleeved with a guide seal 72 for sealing a gap between the inflation guide 7 and the inflation hole 222. The part of the inflation guide bar 7 located in the first receiving groove 27 is sleeved with a guide bar elastic member 71, one end of the guide bar elastic member 71 abuts against the lower side of the head of the inflation guide bar 7, and the other end abuts against the bottom wall of the first receiving groove 27, and is used for closing the inflation hole 222 in a normal state. When a sufficient downward pressure is applied, the inflation guide 7 moves downward to open the inflation hole 222.

Fig. 11 shows a perspective view of the garnish body 5.

The decorative body 5 includes an annular decorative portion 53 and an insertion portion 54 located below the decorative portion 53 and coaxially provided.

The insert 54 is a hollow cylinder with open top and bottom surfaces and a circumferential sidewall. The inner cavity of the decorative portion 53 and the inner cavity of the insertion portion 54 constitute a cylindrical inner cavity penetrating vertically of the decorative body 5. The outer diameter of the insertion portion 55 is smaller than the outer diameter of the decorative portion 53. When the insertion portion 54 of the decoration body 5 is completely inserted into the first receiving groove 27 of the cover body 2, the decoration portion 53 is pressed against the annular step portion 21 of the cover body, and the bottom of the insertion portion 54 is parallel to or higher than the top of the fourth limiting protrusion 226 or the third limiting protrusion 225 on the cover body 2, so as to avoid the interference between the insertion portion 54 and the fourth limiting protrusion 226 or the third limiting protrusion 225. It should be noted that, if the bottom of the insertion portion 54 is higher than the top of the fourth limiting protrusion 226 or the third limiting protrusion 225, the gap between the bottom of the insertion portion 54 and the top of the fourth limiting protrusion 226 or the third limiting protrusion 225 is smaller than the height of the fitting protrusion 41 (described later) on the key 4, so as to prevent the fitting protrusion 41 from sliding out.

The outer peripheral side wall of the insertion portion 54 is uniformly provided with a plurality of decoration mounting openings 52. The number of decorative body attachment openings 52 is equal to the number of cover attachment projections 25. Alternatively, the outer circumferential side wall of the insertion portion 54 is uniformly provided with several flat surfaces on which the garnish mounting opening 52 is provided.

Referring to fig. 3-6, the decorative body 5 and the cover body 2 are connected by interference, and are not detachable. The installation mode between decorative body 5 and lid 2 does: the insertion portion 54 of the garnish 5 is inserted into the first receiving groove 27, and the cover attachment projection 25 on the inner circumferential side wall of the recessed portion 22 is engaged with the garnish attachment opening 52 on the circumferential side wall of the insertion portion 54, so that the garnish 5 is attached to the cover 2.

The circumferential side wall of the insertion portion 54 is provided with two fitting grooves 51 in a radially symmetrical manner. The fitting groove 51 extends downward in the axial direction of the insertion portion 54, and is open toward the bottom of the insertion portion 54. The fitting groove 51 and the garnish attachment opening 52 are provided at different circumferential positions of the insertion portion 54.

When the decorative body 5 is connected to the cover body 2, the side wall of one side of the fitting groove 51 and the side wall of the fourth limiting protrusion 226 close to one side of the adjacent third limiting protrusion 225 are on the same vertical plane, and the side wall of the other side of the fitting groove 51 and the side wall of the third limiting protrusion 225 close to one side of the adjacent fourth limiting protrusion 226 are on the same vertical plane.

Fig. 10 shows a perspective view of the key 4. The key 4 is an integral member including: a key main body 40 and a key mounting portion 44.

The key body 40 is a hollow cylinder with open top and bottom surfaces, having circumferential side walls and a top wall that is not completely closed. The key main body 40 is accommodated in the inner cavity of the garnish 5, and is movable up and down in the inner cavity of the garnish 5, and rotatable within a certain angle range with respect to the garnish 5.

The upper end surface of the circumferential side wall of the key main body 40 extends inwards in the radial direction to form an annular top wall, and the lower surface of the top wall and the inner circumferential side surface of the key main body 40 define together to form a key second annular step portion 4 for the key elastic member 48 to press.

The key elastic member 48 is sleeved on the circumferential side wall of the supporting portion 23, one end of the key elastic member 48 abuts against the second annular step portion 4 of the key, and the other end abuts against the bottom wall of the first accommodating groove 27.

The lower end surface of the circumferential side wall of the key main body 40 extends radially outward to form an annular flange 43.

The circumferential side wall of the key main body 40 is provided with two avoiding grooves 42 in a radially symmetrical manner, and the avoiding grooves 42 extend downwards along the axial direction of the key main body 40 and are open towards the bottom of the key main body 40. The escape groove 42 is used to escape the air-charging guide bar 7, the first stopper groove 24, and the second stopper groove 25 so as not to interfere with the key main body 40.

The portion of the flange 43 connected to one side wall of the escape groove 42 extends outward in the radial direction of the key 4 to form the fitting projection 41. The outer diameter of the fitting projection 41 is larger than the inner diameter of the insertion portion 54 and smaller than the inner diameter of the recess 22. The key body 40 includes two fitting protrusions 41 arranged radially symmetrically.

The key body 40 is inserted into the garnish 5 from below the insertion portion 54. The fitting projection 41 is accommodated in a space formed by the fitting groove 51, the fourth limit projection 226, the third limit projection 225, the first limit projection 223 and the second limit projection 224, and can horizontally rotate or move up and down in the space.

Referring to fig. 15 to 16, when the fitting projection 41 is located in a space formed by the fitting groove 51, the fourth stopper projection 226 and the third stopper projection 225 and adjacent to the sidewall of the third stopper projection 225, the fitting projection 41 is movable up and down in the space, thereby allowing the push button 4 to move up and down in synchronization with the piston 3 to open or close the suction hole 221 and the discharge hole 31, and the vacuum apparatus is in a vacuum state. Referring to fig. 17, when the fitting projection 41 is engaged in the space formed by the first and

second limit projections

223 and 224, the suction hole 221 and the exhaust hole 31 are closed, and the vacuum apparatus is in a pressure maintaining state. Referring to fig. 18 to 19, when the fitting protrusion 41 is located in the space formed by the fitting groove 51, the fourth limiting protrusion 226 and the third limiting protrusion 225 and is close to the fourth limiting protrusion 226, the fitting protrusion 41 moves downward to press against the top of the inflation guide rod 7, and then continues to move downward to drive the inflation guide rod 7 to move downward to open the inflation hole 222, so that the vacuum pumping device is in an inflation state.

It should be noted that the upper surface of the side of the mating protrusion 41 away from the avoiding groove 42 may be an inclined surface or a flat surface, and this embodiment is preferably configured as an inclined surface, so that the mating protrusion 41 can be screwed into or screwed out of the space formed by the first limiting protrusion 223 and the second limiting protrusion 224.

The key mounting part 44 is provided on the upper side of the key main body 40. The inner cavity of the key mounting portion 44 and the inner cavity of the key main body 40 constitute a cylindrical inner cavity of the key 4 which is vertically penetrated. The outer diameter of the key fitting portion 44 is smaller than the outer diameter of the key main body 40, and a key third annular step portion 4 is defined by the circumferential side wall of the key fitting portion 44 and the top surface of the key main body 40 together, and is used for pressing against a key cover 6 (described later). Two key mounting surfaces 45 are formed along the top surface of the key mounting portion 44 extending downward to the top surface of the key main body 40, and the two key mounting surfaces 45 are symmetrically arranged along the radial direction of the key mounting portion 44. Preferably, the key mounting surface 45 is a vertical plane. The key mounting surface 45 extends inward to form a key mounting opening 46 for attachment of the key cover 6.

An annular key first annular step 47 extends inwards along the inner circumferential side wall of the key assembling portion 44, and the inner diameter of the key first annular step 47 is larger than the outer diameter of the piston body 30 of the piston 3 and smaller than the outer diameter of the piston head 32 of the piston 3. The piston 3 is inserted into the key 4 from above the key fitting portion 44, and the lower surface of the piston head 32 is pressed against the key first annular step portion 47.

Fig. 12-14 show a perspective view, a front view and a bottom view, respectively, of the key cover 6. The key cover 6 is used for driving the keys 4 to press downwards.

The key cover 6 is an integral member, and includes a cylindrical key cover main body 61 and a key cover assembling portion 62 located below the key cover main body 61 and coaxially disposed.

The key cover assembly 62 is a hollow cylinder having a circumferential sidewall. The outer diameter of the key cover fitting part 62 is smaller than the outer diameter of the key cover main body 61. The bottom wall of the key cover main body 61 and the outer circumferential side wall of the key cover fitting portion 62 together define a key cover annular step portion 66 for pressing against the garnish body 5. Two key cover mounting surfaces 63 are formed extending downward along the top wall of the key cover mounting part 62, and the two key cover mounting surfaces 63 are arranged symmetrically in the radial direction of the key cover main body 61. The inner side wall of the key cover mounting surface 63 extends inward to form a key cover mounting projection 64 for connection to the key 4.

The key assembling portion 44 is in interference fit with the key cover 6, and is not detachable therebetween. The key mounting portion 44 is connected to the key cover 6 in the following manner: the key assembling portion 44 is inserted into the key cover 6 from the lower side of the key cover main body 61, two key mounting surfaces 45 of the key assembling portion 44 are respectively matched with two key cover mounting surfaces 63, a key cover mounting projection 64 on the key cover mounting surface 63 is clamped in a key mounting opening 46 on the key mounting surface 45, and the key cover assembling portion 62 is pressed against the key third annular step portion 4. The provision of the key mounting surface 45 and the key cover mounting surface 63 facilitates positioning and mounting between the key mounting portion 44 and the key cover mounting portion 62.

When the keys 4 are attached to the key top 6, the keys 4 can be rotated and moved up and down in synchronization with the key top 6. The upper surface of the piston head 32 abuts against the bottom wall of the keycap body 61. The lower surface abuts against the key first annular step 47, thereby achieving the synchronous up-and-down movement of the piston 3 with the key 4 and the key cover 6.

Referring to fig. 14, the bottom wall of the key cover main body 61 is provided with exhaust grooves 65 extending in the radial direction, and the exhaust grooves 65 communicate with both sides of the key cover assembling portion 62. The vent groove 65 and the key cover mounting surface 63 are located at different circumferential positions.

When the vacuum apparatus is stored alone, the button cover 6 is in a depressed state, and the engaging protrusion 41 of the button 4 is located in the space formed by the first stopper protrusion 223 and the second stopper protrusion 224. When the vacuum-pumping means is attached to the container body 1, the air pressure in the first chamber a is balanced with the external air pressure. Fig. 15 to 19 show an operation view of the vacuum extractor with the first stopper projection 223, the second stopper projection 224, the third stopper projection 225, and the fourth stopper projection 226 of the lid body 2 being retained and other structure of the lid body 2 being omitted, as viewed from the outer circumferential side wall of the recess 22 of the lid body 2 to the inner side. The directions of operation described below are from the top down.

Fig. 15 and 16 show operation views when the vacuum pumping means pumps the first chamber a. The operation process of vacuumizing is as follows:

(1) When the cover 2 is attached to the container body 1, and then the key cover 6 is rotated clockwise, the key cover 6 drives the keys 4 to rotate synchronously until the engaging protrusions 41 of the keys 4 leave the space formed by the first limiting protrusions 223 and the second limiting protrusions 224, enter the space formed by the engaging grooves 51, the fourth limiting protrusions 226 and the third limiting protrusions 225, and abut against the side wall of the limiting portion 24.

(2) When the key cover 6 is released, the key elastic member 48 rebounds to drive the key cover 6, the keys 4 and the piston 3 to move upwards synchronously. Referring to fig. 4, as the volume of the second chamber b increases during the ascent, the air pressure in the second chamber b decreases. When the gas pressure in the first chamber a is sufficiently higher than the gas pressure in the second chamber b, the gas in the first chamber a enters from the gap between the sealing body of the pumping gasket 8 and the pumping hole 221 and pushes the umbrella-shaped structure of the pumping gasket 8 to deform and move upwards, so that a gap is formed between the umbrella-shaped structure and the bottom wall of the second accommodating groove 28, the pumping hole 221 is opened, and the gas in the first chamber a enters the second chamber b through the pumping hole 221, thereby pumping a part of the gas in the first chamber a into the second chamber b. At the same time, the difference in air pressure between the external environment and the second chamber b causes the umbrella-shaped structure of the venting seal 9 to cover the venting hole 31, so that the venting hole 31 remains closed.

(3) When the engagement projection 41 of the key 4 abuts the top wall of the engagement groove 51 of the garnish body 5, the key cover 6 reaches the highest position. The key cover 6 is pressed downward, the key cover 6 drives the keys 4 and the piston 3 to move downward synchronously, and meanwhile, the key elastic member 48 is compressed until the key cover annular step part 66 abuts against the top surface of the decoration part 53 of the decoration body 5. Referring to fig. 4, as the volume of the second chamber b decreases during the downward movement, the air pressure in the second chamber b increases. When the air pressure in the second chamber b is sufficiently higher than the air pressure in the external environment, the air in the second chamber b enters from the gap between the sealing body of the exhaust gasket 9 and the exhaust hole 31 and pushes the umbrella-shaped structure of the exhaust gasket 9 to deform, so that a gap is formed between the umbrella-shaped structure and the bottom wall of the piston 3, the exhaust hole 31 is opened, the air in the second chamber b flows through the exhaust hole 31, the inner cavity of the piston 3 and the exhaust groove 65 on the key cover 6 in sequence and is exhausted to the outside, and therefore the air in the second chamber b is exhausted to the outside. Meanwhile, the air pressure difference between the second chamber b and the first chamber a causes the umbrella-shaped structure of the airtight seal 8 to cover the air extraction hole 221, and thus the air extraction hole 221 remains closed.

(4) The operation of loosening and pressing the key cover 6 is repeated for a plurality of times, so that the gas in the first chamber a is completely pumped out until the first chamber a is vacuumized, or the gas in the first chamber a is partially pumped out until the first chamber a is in a required gas pressure value, thereby meeting different requirements of different articles contained in the container body 1 on the gas pressure and expanding the application range of the vacuum pumping device.

Fig. 17 shows an operation view when the vacuum pumping means maintains pressure in the first chamber a. The operation process of pressure maintaining is as follows:

(1) When the first chamber a is in a vacuum state or at a desired air pressure value, the button cover 6 is pressed downward, the button cover 6 carries the button 4 and the piston 3 downward in synchronization, and at the same time, the button elastic member 48 is compressed until the button cover annular step portion 66 of the button cover 6 abuts against the top surface of the decorative portion 53. During the downward movement, the pumping hole 221 is kept closed, the exhaust hole 31 is opened, and the gas in the second chamber b is exhausted to the outside.

(2) Rotating the key cover 6 counterclockwise while keeping the key cover 6 pressed downward causes the fitting projection 41 of the key 4 to leave the space formed by the fitting groove 51, the fourth stopper projection 226 and the third stopper projection 225 and enter the space formed by the first stopper projection 223 and the second stopper projection 224. When the engaging projection 41 abuts against the side wall of the second stopper projection 224, the rotation is stopped and the key cover 6 is released, and the engaging projection 41 is slightly moved upward until it abuts against the first stopper projection 223 by the restoring force of the key elastic member 48. At this time, the key 4 is snapped on the cover 2 so that the key cover 6 and the piston 3 are maintained at fixed positions, and the pumping hole 221 and the exhaust hole 31 are both maintained closed, thereby maintaining the first chamber a in a vacuum state or at a desired air pressure value.

Fig. 18 and 19 show the operation of the evacuation device when it is inflating the first chamber a. The operation process of inflation is as follows:

(1) The key cover 6 is rotated clockwise until the fitting projection 41 leaves the space formed by the first and

second stopper projections

223 and 224, enters the space formed by the fitting groove 51, the fourth stopper projection 226, and the third stopper projection 225, and abuts against the side wall of the stopper portion 24.

(2) When the key cover 6 is released, the key elastic member 48 rebounds to drive the piston 3, the key 4 and the key cover 6 to move upwards synchronously.

(3) After the key cover 6 reaches the highest position, the key cover 6 is continuously rotated clockwise to drive the keys 4 to synchronously rotate until the matching protrusions 41 of the keys 4 abut against the side wall of the matching groove 51 of the decorative body 5 close to one side of the fourth limiting protrusion 226, and at the moment, the matching protrusions 41 are positioned above the inflation guide rod 7.

(4) The key cover 6 is pressed downwards to drive the key 4 to move downwards synchronously until the matching protrusion 41 of the key 4 abuts against the top of the limiting part 24, so that the inflating guide rod 7 is completely pressed into the limiting part 24 of the cover body 2. When the inflation guide rod 7 moves downwards, the inflation hole 222 is opened, and outside air enters the first chamber a through the key cover 6, the gap between the decoration body 5 and the key 4, the gap between the inflation guide rod 7 and the limiting part 24, and the gap between the inflation guide rod 7 and the inflation hole 222 in sequence.

(5) After the state of pressing the key cover 6 is maintained for a while, the air pressure in the first chamber a is balanced with the outside, and the cover body 2 can be easily detached from the container body 1, thereby taking out the contents contained in the container body 1.

Therefore, the vacuumizing device arranged at the opening of the container body 1 can conveniently vacuumize, maintain pressure and inflate the inner space of the container body 1 by simply rotating, pressing and loosening the key cover 6 of the vacuumizing device, does not need to help auxiliary tools, and is convenient to operate and carry; the concave part 22 for accommodating the key cover 6, the decorative body 5, the keys 4 and the piston 3 is arranged on the cover body 2, so that the volume of the cover body 2 is reduced, and the vacuum-pumping device is convenient to store and carry.

Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.

Claims

1. A vacuum-pumping device is used for performing vacuum-pumping operation on a container main body (1), and comprises a cover body (2), a decorative body (5), a key (4), a piston (3) and a key cover (6);

the cover body (2) is used for closing the opening of the container body (1), and the cover body (2) comprises a base part (20) and a concave part (22) formed by extending downwards along the circular inner edge of the base part (20); the recess (22) is a hollow cylinder having a circumferential side wall and a bottom wall; the bottom wall of the concave part (22) protrudes upwards to form a cylindrical supporting part (23); the support part (23) is arranged coaxially with the recess part (22); a first accommodating groove (27) is formed between an outer circumferential side wall of the support portion (23) and an inner circumferential side wall of the recessed portion (22); the inner space of the support part (23) forms a second accommodating groove (28);

the decorative body (5) is accommodated in the first accommodation groove (27) and connected to a circumferential side wall of the recess (22); the decorative body (5) is provided with a cylindrical inner cavity which is communicated up and down;

the key (4) is accommodated in the inner cavity of the decorative body (5) and can move up and down in the inner cavity of the decorative body (5); the key (4) is provided with an inner cavity which is communicated up and down;

the key elastic piece (48) is sleeved on the circumferential side wall of the supporting part (23) and at least partially positioned in the inner cavity of the key (4), one end of the key elastic piece (48) abuts against the inner wall of the key (4), and the other end of the key elastic piece abuts against the bottom wall of the first accommodating groove (27);

the lower part of the piston (3) is accommodated in the second accommodating groove (28), the upper part of the piston is accommodated in the inner cavity of the key (4), and the piston (3) can move up and down in the second accommodating groove (28);

the key cover (6) is arranged above the key (4) and is fixedly connected with the key (4), and the piston (3) is arranged to synchronously move up and down with the key (4) and the key cover (6);

a first chamber (a) is formed between the container body (1) and the cover body (2), and a second chamber (b) is formed between the piston (3) and the bottom wall of the second accommodating groove (28);

the bottom wall of the second accommodating groove (28) is provided with a pumping hole (221) for pumping the gas in the first chamber (a) into the second chamber (b); the bottom wall of the piston (3) is provided with an exhaust hole (31) for exhausting the gas in the second chamber (b) to the external environment; the air suction hole (221) and the air exhaust hole (31) are kept closed in a normal state;

when the key cover (6), the key (4) and the piston (3) synchronously move upwards, the air suction hole (221) is opened, and the exhaust hole (31) is closed; when the key cover (6), the key (4) and the piston (3) synchronously move downwards, the exhaust hole (31) is opened, and the air suction hole (221) is closed;

two first limiting bulges (223) are formed on the inner circumferential side wall of the concave part (22) in a circumferential extending mode, and the two first limiting bulges (223) are symmetrically arranged along the radial direction of the concave part (22); one end of the first limiting bulge (223) extends upwards for a certain distance to form a third limiting bulge (225);

two fourth limiting protrusions (226) extend along the axial direction of the recessed portion (22) on the inner circumferential side wall of the recessed portion (22), and the two fourth limiting protrusions (226) are symmetrically arranged along the radial direction of the recessed portion (22);

the fourth limiting projection (226) is respectively positioned at different circumferential positions with the first limiting projection (223) and the third limiting projection (225); the top of the fourth limit projection (226) is flush with the top of the third limit projection (225);

the decoration body (5) comprises an annular decoration part (53) and an insertion part (54) which is positioned at the lower side of the decoration part (53) and is coaxially arranged;

the insert (54) is a hollow cylinder with open top and bottom surfaces and a circumferential sidewall; the inner cavity of the decorative part (53) and the inner cavity of the insertion part (54) form the cylindrical inner cavity of the decorative body (5);

the circumferential side wall of the insertion portion (54) is provided with two fitting grooves (51) in a radially symmetrical manner, the fitting grooves (51) extending downward in the axial direction of the insertion portion (54) and opening toward the bottom of the insertion portion (54);

when decorative body (5) are connected on lid (2), one side lateral wall of cooperation groove (51) with fourth spacing arch (226) are close to adjacently the lateral wall of third spacing arch (225) one side is in same vertical plane, the opposite side lateral wall of cooperation groove (51) with third spacing arch (225) are close to adjacently the lateral wall of fourth spacing arch (226) one side is in same vertical plane.

2. The vacuum extractor as claimed in claim 1, characterized in that said piston (3) comprises a piston body (30) and a piston head (32);

the piston head (32) is annular and extends downwards along the inner ring of the piston head (32) to form the piston body (30);

the piston body (30) is a hollow cylinder or a truncated cone, and is provided with a circumferential side wall and a bottom wall, and the piston body (30) is at least partially accommodated in the second accommodating groove (28) of the cover body (2).

3. The evacuation device according to claim 1, wherein the key (4) comprises a key body (40), the key body (40) being a hollow cylinder, open at the top and bottom, having circumferential side walls; the lower end surface of the key body (40) extends outwards along the radial direction to form an annular flange (43);

the peripheral side wall of the key main body (40) is provided with two avoidance grooves (42) in a radial symmetrical mode, and the avoidance grooves (42) extend downwards along the axial direction of the key main body (40) and face the bottom opening of the key main body (40);

the part of the flange (43) connected with one side wall of the avoidance groove (42) extends outwards along the radial direction of the key main body (40) to form a matching protrusion (41);

the outer diameter of the fitting protrusion (41) is larger than the inner diameter of the insertion part (54), and the fitting protrusion (41) is movable up and down in a space formed among the fitting groove (51), the fourth stopper protrusion (226), and the third stopper protrusion (225).

4. The vacuum pumping apparatus as claimed in claim 3, wherein a second stopper protrusion (224) is formed along the other end of the first stopper protrusion (223) extending downward to the bottom wall of the recess (22);

when the key cover (6) is pressed downwards to the lowest position, the key cover (6) can rotate for a certain angle relative to the decorative body (5) so as to drive the matching protrusion (41) of the key (4) to be clamped in a space formed by the first limiting protrusion (223) and the second limiting protrusion (224), and the key (4) is fixed on the cover body (2).

5. The vacuum pumping device as claimed in claim 3, wherein the bottom wall of the first receiving groove (27) is provided with two air filling holes (222), and the bottom wall of the first receiving groove (27) protrudes upwards to form two limiting parts (24);

the two air charging holes (222) are symmetrically arranged along the radial direction of the first accommodating groove (27); the two limiting parts (24) are symmetrically arranged along the radial direction of the first accommodating groove (27); the limiting part (24) is a hollow cylinder; the limiting part (24) is arranged around the air inflation hole (222);

the limiting part (24) is at least partially positioned in a space formed by the matching groove (51), the fourth limiting bulge (226) and the third limiting bulge (225) adjacent to the fourth limiting bulge (226), and is close to one side of the fourth limiting bulge (226).

6. The vacuum pumping apparatus as claimed in claim 1, wherein the key cover (6) comprises a key cover main body (61) having a cylindrical shape and a key cover fitting portion (62) located coaxially below the key cover main body (61); the key cover assembly part (62) is a hollow cylinder and is provided with a circumferential side wall;

a part of the key (4) is accommodated in the cavity of the key cover assembly part (62) and is fixedly connected with the key cover assembly part (62);

the bottom wall of the key cover main body (61) is provided with an exhaust groove (65) extending along the radial direction, and the exhaust groove (65) is communicated with two sides of the circumferential side wall of the key cover assembling part (62).

7. The vacuum pumping apparatus according to claim 1, wherein a plurality of cover body mounting protrusions (25) are uniformly provided on the inner circumferential side wall of the recess (22),

a plurality of decorative body mounting openings (52) are uniformly formed in the outer circumferential side wall of the insertion part (54);

the decorative body mounting openings (52) and the cover body mounting bulges (25) are arranged in the same number;

the decorative body (5) is connected to the cover body (2) when the insertion portion (54) is inserted into the first receiving groove (27) of the recess portion (22) and the cover body mounting projection (25) is engaged with the decorative body mounting opening (52).

8. An evacuated container comprising a container body (1) and an evacuation device according to any of claims 1-7 for closing an opening of the container body (1), and a lid sealing ring (26) is provided between the lid (2) and the container body (1) of the evacuation device.