阅读说明：本技术 一种抽真空装置及一种容器 (Vacuumizing device and container ) 是由 金善浩 于 2020-12-30 设计创作，主要内容包括：本发明涉及一种抽真空装置及一种容器,包括盖体、装饰体、按键和活塞组件。盖体包括基部和凹陷部。凹陷部底壁向上突出形成的支撑部与凹陷部间为一容纳槽。支撑部内部空间为第二容纳槽。装饰体容纳于第一容纳槽。按键容纳于装饰体内腔且可上下移。活塞组件容纳于按键内腔,包括活塞本体、活塞驱动件和活塞弹性件。活塞本体的一部分容纳于第二容纳槽且可上下移。活塞弹性件套设支撑部,抵靠活塞本体和第一容纳槽。活塞驱动件固定于活塞本体且抵靠按键。容器主体与盖体间形成第一腔室,活塞本体与第二容纳槽间形成第二腔室。第二容纳槽底设常闭的抽气孔。活塞本体底设常闭的排气孔。其有益效果是,旋转或按压按键实现抽真空、保压、充气,方便操作。(The invention relates to a vacuum-pumping device and a container, comprising a cover body, a decorative body, a key and a piston assembly. The cover includes a base and a recess. An accommodating groove is formed between the supporting part and the depressed part which are formed by upward protrusion of the bottom wall of the depressed part. The inner space of the supporting part is a second accommodating groove. The decorative body is accommodated in the first accommodating groove. The key is accommodated in the inner cavity of the decorative body and can move up and down. The piston assembly is accommodated in the key inner cavity and comprises a piston body, a piston driving piece and a piston elastic piece. A part of the piston body is accommodated in the second accommodating groove and can move up and down. The supporting part is set on the piston elastic piece to lean against the piston body and the first containing groove. The piston driving piece is fixed on the piston body and abuts against the key. A first cavity is formed between the container main body and the cover body, and a second cavity is formed between the piston main body and the second accommodating groove. The bottom of the second containing groove is provided with a normally closed air suction hole. The bottom of the piston body is provided with a normally closed exhaust hole. The multifunctional vacuum pump has the advantages that the key is rotated or pressed to realize vacuum pumping, pressure maintaining and inflation, and the operation is convenient.)

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) and a piston assembly (3);

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 supporting part (23) and the concave part (22) are coaxially arranged; a first accommodating groove (28) is formed between the outer circumferential side wall of the supporting portion (23) and the inner circumferential side wall of the recessed portion (22); the inner space of the support part (23) forms a second accommodating groove (29);

the decorative body (5) is accommodated in the first accommodation groove (28) 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 a hollow cylinder, the top surface of the key is closed, the bottom surface of the key is open, the key is provided with a circumferential side wall and a top wall, and 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 piston assembly (3) is accommodated in an inner cavity of the key (4), and the piston assembly (3) comprises a piston body (30), a piston driving piece (38) and a piston elastic piece (33);

a part of the piston body (30) is accommodated in the second accommodation groove (29) and is movable up and down in the second accommodation groove (29);

the piston elastic piece (33) is sleeved on the circumferential side wall of the supporting part (23), one end of the piston elastic piece (33) abuts against the piston body (30), and the other end of the piston elastic piece abuts against the bottom wall of the first accommodating groove (28);

the piston driving piece (38) is fixedly connected with the piston body (30) and abuts against the lower side of the top wall of the key (4) so that the piston assembly (3) and the key (4) synchronously move up and down;

a first cavity (a) is formed between the container main body (1) and the cover body (2), and a second cavity (b) is formed between the piston body (30) and the bottom wall of the second accommodating groove (29);

the bottom wall of the second accommodating groove (29) 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 body (30) 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 (4) moves upwards synchronously with the piston assembly (3), the air suction hole (221) is opened, and the exhaust hole (31) is closed; when the key (4) and the piston assembly (3) synchronously move downwards, the exhaust hole (31) is opened, and the air suction hole (221) is closed.

2. The evacuation device according to claim 1, wherein an evacuation seal (7) is provided on an upper side of a bottom wall of said second housing groove (29) for normally closing said evacuation hole (221); when the gas pressure in the first chamber (a) is sufficiently greater than the gas pressure in the second chamber (b), the suction gasket (7) moves upward to open the suction hole (221);

the exhaust sealing gasket (8) is arranged on the upper side of the bottom wall of the piston body (30) and is used for closing the exhaust hole (31) under a normal state; when the air pressure in the second chamber (b) is sufficiently high relative to the external ambient air pressure, the vent gasket (8) moves upward to open the vent hole (31).

3. The evacuation device according to claim 1, wherein the piston body (30) comprises a piston head portion (32) and a piston body portion (37);

the piston head (32) is annular and extends downwards along the inner ring of the piston head (32) to form the piston main body part (37);

the piston main body part (37) is a hollow cylinder with a circumferential side wall and a bottom wall, and the piston main body part (37) is accommodated in the second accommodating groove (29) of the cover body (2).

4. The vacuum extractor as claimed in claim 3, characterized in that the top wall of the piston head (32) is provided with a plurality of radially extending exhaust grooves (35) uniformly along the circumferential direction, and the exhaust grooves (35) are communicated with the inner ring and the outer ring of the piston head (32).

5. The vacuum extractor according to claim 1, wherein the decoration body (5) includes a ring-shaped decoration portion (54) and an insertion portion (55) which is positioned at a lower side of the decoration portion (54) and is coaxially provided;

the insert (55) is a hollow cylinder with open top and bottom surfaces and a circumferential side wall; the inner cavity of the decorative part (54) and the inner cavity of the insertion part (55) form the cylindrical inner cavity of the decorative body (5);

the circumferential side wall of the insertion portion (55) 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 (55) and opening toward the bottom of the insertion portion (55).

6. The vacuum extractor according to claim 5, characterized in that the lower end surface of the key (4) extends radially outwards to form a circular flange (43);

the outer diameter of the flange (43) is smaller than the inner diameter of the insertion portion (55) and larger than the inner diameter of the decorative portion (54), the flange (43) being accommodated within the insertion portion (55);

the peripheral side wall of the key (4) 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 (4) and are open towards the bottom of the key (4);

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 (4) to form a matching protrusion (41);

the outer diameter of the fitting projection 41 is larger than the inner diameter of the insertion portion 55, and the fitting projection 41 is movable up and down in the fitting groove 51.

7. The vacuum extractor according to claim 6, characterized in that the circumferential side wall of the insert (55) is provided with two of the stopper grooves (52) arranged adjacent to the fitting groove (51) in a radially symmetrical manner;

the limiting groove (52) extends downwards along the axial direction of the insertion part (55) and is opened towards the bottom of the insertion part (55); the height of the limiting groove (52) is smaller than that of the matching groove (51); the stopper groove (52) is also opened toward the fitting groove (51) so that the stopper groove (52) and the fitting groove (51) communicate with each other;

when the key (4) is pressed downwards to the lowest position, the key (4) can rotate for a certain angle relative to the decorative body (5), so that the matching protrusion (41) of the key (4) is clamped with the limiting groove (52), and the key (4) is fixed on the decorative body (5).

8. The vacuum pumping device according to claim 7, wherein the bottom wall of the first receiving groove (28) is provided with an air filling hole (222), and the bottom wall of the first receiving groove (28) protrudes upwards to form a first limiting part (24) and a second limiting part (25);

the first limiting part (24) and the second limiting part (25) are symmetrically arranged along the radial direction of the first accommodating groove (28); the first limiting part (24) and the second limiting part (25) are hollow cylinders; the first limiting part (24) is arranged around the air inflation hole (222);

the first limiting part (24) is at least partially positioned on one side, far away from the adjacent limiting groove (52), of one matching groove (51) of the decorating body (5), and the second limiting part (25) on the cover body (2) is at least partially positioned on one side, far away from the adjacent limiting groove (52), of the other matching groove (51) of the decorating body (5).

9. The evacuation device according to claim 5, wherein an inner diameter of the recess (22) is smaller than an inner diameter of the inner edge of the base (20);

an annular step (21) is defined by the top of the recess (22) and the inner wall of the base (20);

the annular step part (21) is uniformly provided with a plurality of notches (211) along the circumferential direction, and after the notches (211) extend downwards for a certain distance, the notches continue to extend along the circumferential direction of the side wall of the recessed part (22) to form an L-shaped groove (26);

a plurality of protrusions (53) are uniformly arranged on the outer circumferential side wall of the insertion part (55), and the number of the protrusions (53) is equal to that of the notches (211) or the L-shaped grooves (26);

when the projection (53) is clamped into the L-shaped groove (26), the decorative body (5) is connected to the cover body (2).

10. A container comprising a container body (1) and an evacuation device according to any of claims 1-9 for closing an opening of the container body (1), and a lid sealing ring (27) is provided between the lid (2) and the container body (1) of the evacuation device.

Technical Field

The invention relates to the technical field of vacuumizing devices, in particular to a vacuumizing device and a 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 the 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 is pumped, a vacuum environment can be formed in the device only by spending large effort, which wastes time and labor; 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 cannot be continued, so that the matching use of the existing vacuum pumping device and the auxiliary tool has various 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 container, which solves the problems that the prior vacuum extractor must be used with auxiliary tools, and is cumbersome to operate, time-consuming, labor-consuming, and 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, the present invention provides a vacuum-pumping device for performing vacuum-pumping operation on a container body, comprising a cover body, a decoration body, a key and a piston assembly;

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 a hollow cylinder, the top surface of the key is closed, the bottom surface of the key is open, the key is provided with a circumferential side wall and a top wall, and 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 piston assembly is accommodated in the inner cavity of the key and comprises a piston body, a piston driving piece and a piston elastic piece;

a part of the piston body is accommodated in the second accommodation groove and can move up and down in the second accommodation groove;

the piston elastic piece is sleeved on the circumferential side wall of the supporting part, one end of the piston elastic piece abuts against the piston body, and the other end of the piston elastic piece abuts against the bottom wall of the first accommodating groove;

the piston driving piece is fixedly connected with the piston body and abuts against the lower side of the top wall of the key so as to enable the piston assembly and the key to 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 main body 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 into the second cavity; the bottom wall of the piston body is provided with an exhaust hole for exhausting the gas in the second chamber to the external environment; the air exhaust hole and the exhaust hole are kept closed in a normal state;

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

According to the invention, the air extraction sealing gasket is arranged on the upper side of the bottom wall of the second accommodating groove and is used for closing the air extraction hole in a normal state; when the air pressure in the first chamber is sufficiently higher than the air pressure in the second chamber, the air exhaust sealing gasket moves upwards to open the air exhaust hole;

the exhaust sealing gasket is arranged on the upper side of the bottom wall of the piston body and is used for closing the exhaust hole under a normal state; when the air pressure in the second chamber is sufficiently greater than the ambient air pressure, the vent gasket moves upward to open the vent hole.

According to the present invention, the piston body includes a piston head portion and a piston main body portion;

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

the piston main body part is a hollow cylinder and is provided with a circumferential side wall and a bottom wall, and the piston main body part is accommodated in the second accommodating groove of the cover body.

According to the invention, a plurality of exhaust grooves extending along the radial direction are uniformly arranged on the top wall of the piston head along the circumferential direction, and the exhaust grooves are communicated with the inner ring and the outer ring of the piston head.

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 portion is provided with two fitting grooves in a radially symmetrical manner, the fitting grooves extending downward in the axial direction of the insertion portion and opening toward the bottom of the insertion portion.

According to the invention, the lower end surface of the key extends outwards along the radial direction to form a circular flange;

an outer diameter of the flange is smaller than an inner diameter of the insertion portion and larger than an inner diameter of the decoration portion, the flange being accommodated in the insertion portion;

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

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 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 the matching groove.

According to the present invention, the circumferential side wall of the insertion portion is provided with two of the stopper grooves provided adjacent to the fitting groove in a radially symmetrical manner;

the limiting groove extends downwards along the axial direction of the insertion part and is opened towards the bottom of the insertion part; the height of the limiting groove is smaller than that of the matching groove; the limiting groove is also opened towards the matching groove, so that the limiting groove and the matching groove are communicated with each other;

when the key is pressed downwards to the lowest position, the key can rotate for a certain angle relative to the decorative body, so that the matching protrusion of the key is clamped with the limiting groove, and the key is fixed on the decorative body.

According to the invention, the bottom wall of the first accommodating groove is provided with the inflation hole, and the bottom wall of the first accommodating groove protrudes upwards to form a first limiting part and a second limiting part;

the first limiting part and the second limiting part are symmetrically arranged along the radial direction of the first accommodating groove; the first limiting part and the second limiting part are hollow cylinders; the first limiting part is arranged around the inflation hole;

the first limiting part is at least partially positioned on one side, far away from the adjacent limiting groove, of one matching groove of the decorating body, and the second limiting part on the cover body is at least partially positioned on one side, far away from the adjacent limiting groove, of the other matching groove of the decorating body.

According to the invention, the inner diameter of the recess is smaller than the inner diameter of the inner edge of the base;

an annular step is defined by the top of the recess and the inner wall of the base together;

the annular step part is uniformly provided with a plurality of gaps along the circumferential direction, and after the gaps extend downwards for a certain distance, the gaps continue to extend along the circumferential direction of the side wall of the recessed part to form an L-shaped groove;

a plurality of bulges are uniformly arranged on the outer circumferential side wall of the insertion part, and the arrangement number of the bulges is equal to that of the notches or the L-shaped grooves;

the decorative body is attached to the cover body when the projection is snapped into the L-shaped groove.

In a second aspect, the present invention provides a container comprising a container body and a vacuum extractor for closing an opening of the container body, wherein a lid sealing ring is disposed between the lid of the vacuum extractor and the container body.

(III) advantageous effects

The invention has the beneficial effects that: according to the vacuumizing device provided by the invention, the vacuumizing 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 key of the vacuumizing device without an auxiliary tool, so that the operation is convenient and the carrying is convenient; through set up the depressed part that holds decorative body, button and piston assembly on the lid, reduced the volume of lid, be convenient for evacuating device accomodate and carry.

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 is a cross-sectional view at A-A of FIG. 2;

FIG. 4 is a cross-sectional view at B-B of FIG. 2;

FIG. 5 is a cross-sectional view at C-C of FIG. 2;

FIG. 6 is a perspective view of a piston body in an embodiment of the present invention;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a perspective view of a piston in an embodiment of the present invention;

FIG. 9 is a top view 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 an operational view of the evacuation device evacuating the first chamber in accordance with the embodiment of the present invention;

fig. 13 is an operation view of the vacuum pumping device for pressurizing the first chamber according to the embodiment of the present invention;

FIG. 14 is an operational view of the evacuation device inflating the first chamber in accordance with an embodiment of the present invention;

FIG. 15 is a top view of the device of an embodiment of the present invention during inflation without the keys depressed;

FIG. 16 is a cross-sectional view taken at D-D of FIG. 15;

FIG. 17 is a top view of a device according to an embodiment of the present invention during inflation when a key is pressed;

fig. 18 is a cross-sectional view at E-E of fig. 17.

[ description of reference ]

1: a container body;

2: a cover body; 20: a base; 21: an annular step portion; 211: a notch; 22: a recessed portion; 221: an air exhaust hole; 222: an inflation hole; 23: a support portion; 24: a first limiting part; 25: a second limiting part; 26: an L-shaped groove; 27: a cover body sealing ring; 28: a first accommodating groove; 29: a second accommodating groove;

3: a piston assembly; 30: a piston body; 31: an exhaust hole; 32: a piston head; 33: a piston elastic member; 34: a piston seal ring; 35: an exhaust groove; 36: installing a groove; 37: a piston body portion; 38: a piston driver;

4: pressing a key; 41: a mating protrusion; 42: an avoidance groove; 43: a flange;

5: a decorative body; 51: a mating groove; 52: a limiting groove; 53: a protrusion; 54: a decorative part; 55: an insertion portion;

6: an inflation guide rod; 61: a guide rod elastic member; 62: a guide rod sealing ring;

7: an air extraction gasket;

8: 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, decorative body 5, button 4 and piston assembly 3.

The container body 1 may be made of plastic, glass 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 cover 2 is detachably connected to the opening of the container body 1, and may be engaged with the opening by various means such as a snap connection or a screw connection. A lid packing 27 for improving the sealing property between the lid 2 and the container body 1 is provided between them.

Referring to fig. 6-7, the cover 2 is a one-piece member including a base 20. The base 20 is provided with an outer edge and an inner edge which is rounded. The concave part 22 extends downwards along the inner edge of the base part 20, and the concave part 22 is used for accommodating the decorative body 5, the key 4 and the piston assembly 3, so that the volume of the cover body 2 is reduced, and the vacuum-pumping device is convenient to store and carry. The outer edge of the base 20 is circular in the present embodiment by way of example, but the present invention is not limited to the shape of the outer edge of the base 20.

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. An annular step 21 is defined by the top of the recess 22 together with the inner wall of the base 20. The annular step portion 21 is uniformly provided with a plurality of notches 211 along the circumferential direction, and after the notches 211 extend downwards for a certain distance, the notches 211 continue to extend along the circumferential direction of the side wall of the recessed portion 22 to form an L-shaped groove 26 so as to install and fix the decorative body 5. The embodiment shown in fig. 6 depicts four notches 211 and four L-shaped grooves 26, and more or less than four notches 211 and L-shaped grooves 26 may be provided, and particularly, four notches 211 and L-shaped grooves 26 are preferably provided to ensure the stability of the coupled decorative body 5 and cover body 2, depending on the size of cover body 2.

A cylindrical support portion 23 is formed by projecting upward from the bottom wall of the recessed portion 22. The support portion 23 is disposed coaxially with the recess portion 22. A first receiving groove 28 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 28 is used for receiving the garnish body 5 and the key 4. The inner space of the support 23 forms a second receiving groove 29.

Fig. 3-5 show cross-sectional views of the piston assembly 3. Fig. 8 and 9 show a perspective view and a top view, respectively, of the piston body 30.

The piston assembly 3 includes a piston body 30, a piston driver 38, and a piston elastic member 33.

The piston body 30 is a one-piece member that includes a piston head portion 35 and a piston body portion 37. The piston head 35 is annular and extends downward along the inner ring of the piston head 35 to form a piston body 37. The piston body portion 37 is a hollow cylinder having a circumferential side wall and a bottom wall. The piston body portion 37 is accommodated in the second accommodation groove 29 of the lid body 2.

The piston elastic member 33 is fitted over the circumferential side wall of the support portion 23. One end of the piston elastic member 33 abuts against the lower side of the piston head 35, and the other end abuts against the bottom wall of the first accommodation groove 28.

The piston driver 38 is a hollow cylinder having circumferential side walls and a bottom wall. The piston driver 38 has an outer diameter smaller than the inner diameter of the piston body 37. The outer circumferential side wall of the top region of the piston driver 38 is provided with a plurality of mounting protrusions (not shown) uniformly along the circumferential direction. The piston driver 38 is inserted into the piston main body portion 37 and connected to the piston body 30 via the mounting projection. The bottom walls of the piston drivers 38 are spaced above the bottom wall of the piston body 37. The top of the piston driver 38 is slightly higher than the piston head 35 and abuts the push button 4.

Referring to fig. 8-9, the inner ring of the piston head 35 is provided with a plurality of mounting grooves 36 uniformly along the circumferential direction. The number of the mounting recesses 36 is equal to the number of the mounting projections. The mounting groove 36 cooperates with the mounting protrusion to removably couple the piston driver 38 to the piston body 30. While the embodiment shown in fig. 8 depicts four mounting recesses 36, it is contemplated that more or less than four mounting recesses 36 may be provided, depending on the size of the piston head 35. To ensure a secure connection between the piston body 30 and the piston driver 38, four are preferably provided.

Referring to fig. 5, a piston packing 34 for improving the sealing property between the piston assembly 3 and the cover 2 is provided between the circumferential side wall of the piston main body portion 37 and the circumferential side wall of the support portion 23. The piston assembly 3 and the bottom wall of the second accommodation groove 29 form a second chamber b therebetween. A first chamber a is formed between the container body 1 and the lid body 2.

The bottom wall of the second receiving groove 29 is provided with a pumping hole 221 for pumping the gas in the first chamber a into the second chamber b. The suction packing 7 is provided on the upper side of the bottom wall of the second housing groove 29 to normally close the suction hole 221. When the gas pressure in the first chamber a is sufficiently large relative to the gas pressure in the second chamber b, the pumping seal 7 moves upward to open the pumping hole 221.

The bottom wall of the piston body 37 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 8 is provided on the upper side of the bottom wall of the piston body 37 and normally closes the exhaust hole 31. When the air pressure in the second chamber b is sufficiently large relative to the external ambient air pressure, the exhaust gasket 8 moves upward to open the exhaust hole 31.

Referring to fig. 8-9, a plurality of radially extending exhaust grooves 35 are uniformly formed in the top wall of the piston head 35 along the circumferential direction, and the exhaust grooves 35 communicate the inner ring and the outer ring of the piston head 35. The exhaust groove 35 and the mounting groove 36 are located at different circumferential positions. While the embodiment shown in fig. 8 and 9 depicts four vent grooves 35, it is contemplated that more or less than four vent grooves 35 may be provided for practical applications, depending on the size of the piston head 35. To ensure the exhaust efficiency of the piston assembly 3, four are preferably provided.

As shown in fig. 3, 16 and 18, the bottom wall of the first receiving groove 28 is provided with an inflating hole 222 for inflating the gas of the external environment into the first chamber a. The bottom wall of the first receiving groove 28 protrudes upward to form a first limiting portion 24 and a second limiting portion 25, and the first limiting portion 24 and the second limiting portion 25 are symmetrically arranged along the radial direction of the first receiving groove 28. The first stopper portion 24 and the second stopper portion 25 are hollow cylinders. The first position limiting portion 24 is disposed around the inflation hole 222, and preferably, the inflation hole 222 is disposed coaxially with the first position limiting portion 24. It should be noted that 1 or 2 inflation holes 222 may be disposed on the bottom wall of the first receiving groove 28, so that the first position-limiting portion 24 is disposed around the inflation holes 222, or the first position-limiting portion 24 and the second position-limiting portion 25 are disposed around the inflation holes 222, respectively.

The inflation guide 6 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 6 is smaller than the inner diameter of the first limiting portion 24, and the first limiting portion 24 plays a role in guiding the movement of the inflation guide rod 6. The portion of the inflation guide 6 located in the first chamber a is sleeved with a guide seal 62 for sealing a gap between the inflation guide 6 and the inflation hole 222. The part of the inflation guide bar 6 located in the first accommodation groove 28 is sleeved with a guide bar elastic part 61, one end of the guide bar elastic part 61 abuts against the lower side of the head of the inflation guide bar 6, and the other end abuts against the bottom wall of the first accommodation groove 28, and is used for closing the inflation hole 222 in a normal state. When a sufficient downward pressure is applied, the inflation guide 6 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 54 and an insertion portion 55 located below the decorative portion 54 and coaxially provided.

The insert 55 is a hollow cylinder with open top and bottom surfaces and a circumferential sidewall. The inner cavity of the decorative portion 54 and the inner cavity of the insertion portion 55 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 54, and the inner diameter of the insertion portion 55 is larger than the inner diameter of the decorative portion 54. When the insertion portion 55 of the garnish body 5 is completely inserted into the first accommodation groove 28 of the lid body 2, the garnish portion 54 abuts against the annular step portion 21.

The outer circumferential side wall of the insertion part 55 is uniformly provided with a plurality of protrusions 53, and the number of the protrusions 53 is equal to the number of the notches 211 or the L-shaped grooves 26. When the projection 53 is snapped into the L-shaped groove 26, the decorative body 5 is attached to the cover body 2.

The circumferential side wall of the insertion portion 55 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 55, and is open toward the bottom of the insertion portion 55. The circumferential side wall of the insertion portion 55 is provided with two stopper grooves 52 disposed adjacent to the fitting groove 51 in a radially symmetrical manner. The stopper groove 52 extends downward in the axial direction of the insertion portion 55, and is open toward the bottom of the insertion portion 55. The height of the stopper groove 52 is smaller than the height of the fitting groove 51. The stopper groove 52 is also opened toward the fitting groove 51 so that the stopper groove 52 and the fitting groove 51 communicate with each other. Referring to fig. 11, adjacent stopper grooves 52 and fitting grooves 51 are arranged in a clockwise direction in the circumferential direction of the garnish body 5, as viewed from the top of the garnish body 5 downward. In practical applications, the adjacent limiting grooves 52 and the fitting grooves 51 may be arranged in a counterclockwise direction, and the clockwise arrangement is taken as an example for description in the present embodiment.

When the decorative body 5 is connected to the cover body 2, the first position-limiting portion 24 of the cover body 2 and the inflation guide rod 6 in the first position-limiting portion 24 are at least partially located on one side of one matching groove 51 of the decorative body 5 away from the adjacent position-limiting groove 52, and the second position-limiting portion 25 of the cover body 2 is at least partially located on one side of the other matching groove 51 of the decorative body 5 away from the adjacent position-limiting groove 52.

Referring to fig. 6 and 11, the decorative body 5 and the cover body 2 are attached to each other in the following manner: insert first holding groove 28 with inserting portion 55 of decorative body 5, make protruding 53 on the inserting portion 55 circumference lateral wall insert in the vertical section of L shape recess 26 through breach 211, press decorative body 5 downwards until protruding 53 supports and leans on the diapire of L nature recess 26, decoration 54 supports and presses on cyclic annular step 21 this moment, again along anticlockwise rotation decorative body 5 until protruding 53 joint in the horizontal segment of L shape recess 26 to make decorative body 5 be connected on lid 2.

The disassembly mode between the decorative body 5 and the cover body 2 is as follows: the decoration body 5 is rotated clockwise until the protrusion 53 and the horizontal section of the L-shaped groove 26 are unlocked, then the decoration body 5 is moved upward, and the protrusion 53 slides out from the vertical section of the L-shaped groove 26 and the notch 211 in sequence, so that the decoration body 5 and the cover body 2 are separated.

It should be noted that the L-shaped groove 26 may also be provided: rotating the decorative body 5 clockwise makes the protrusion 53 snap in the L-shaped groove 26, rotating the decorative body 5 counterclockwise makes the protrusion 53 and the L-shaped groove 26 unlocked.

Fig. 10 shows a perspective view of the key 4.

The key 4 is a hollow cylinder, the top surface of the key 4 is closed, the bottom surface is open, and the key has a circumferential side wall and a top wall. The key 4 is accommodated in the inner cavity of the decoration body 5, can move up and down in the inner cavity of the decoration body 5, and can also rotate within a certain angle range relative to the decoration body 5. The piston assembly 3 is accommodated in the inner cavity of the key 4, and the top of the piston driving member 38 in the piston assembly 3 abuts against the underside of the top wall of the key 4, so that the piston assembly 3 moves up and down in synchronization with the key 4.

The lower end surface of the push button 4 extends radially outward to form an annular flange 43. The outer diameter of the flange 43 is smaller than the inner diameter of the insertion portion 55 and larger than the inner diameter of the decoration portion 54, the flange 43 is accommodated in the insertion portion 55, and the outer diameter of the flange 43 is sized to facilitate the movement of the key 4 up and down or rotation in the insertion portion 55 without generating a large play.

The circumferential side wall of the key 4 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 4 and are open towards the bottom of the key 4. The escape groove 42 is used to escape the air-charging guide bar 6, the first stopper portion 24, and the second stopper portion 25 so as not to interfere with the key 4.

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 55. The key 4 comprises two mating protrusions 41 arranged radially symmetrically.

The key 4 is inserted into the garnish 5 from below the insertion portion 55. The fitting projection 41 is accommodated in a space formed by the fitting groove 51 and the stopper groove 52 of the insertion portion 55, and can horizontally rotate or move up and down in the space.

Referring to fig. 12, when the fitting protrusion 41 is located in the fitting groove 51 near the sidewall of the fitting groove 51 adjacent to the stopper groove 52, the fitting protrusion 41 may move up and down in the fitting groove 51, thereby allowing the push button 4 to move up and down in synchronization with the piston assembly 3 to open or close the suction hole 221 and the exhaust hole 31, and the vacuum apparatus is in a vacuum state. Referring to fig. 13, when the fitting projection 41 is engaged with the stopper groove 52, the suction hole 221 and the exhaust hole 31 are closed, and the vacuum extractor is in a pressure maintaining state. Referring to fig. 14, when the fitting protrusion 41 is located in the fitting groove 51 and is close to the side wall of the fitting groove 51 not adjacent to the limiting groove 52, the fitting protrusion 41 moves downward in the fitting groove 51 to press against the top of the inflation guide rod 6, and then continues to move downward to drive the inflation guide rod 6 to move downward to open the inflation hole 222, so that the vacuum pumping device is in an inflation state.

When the vacuum extractor is stored independently, the button 4 is in a pressed state, and the matching protrusion 41 of the button 4 is positioned in the limiting groove 52 of the decorative body 5. When the evacuation device is attached to the container body 1, the air pressure in the first chamber is balanced with the ambient air pressure. Figures 12-14 show operational views of the evacuation device. The operating directions described below are all from the top down.

Fig. 12 shows an operation view when the vacuum pumping means pumps the first chamber a with vacuum. The operation process of vacuumizing is as follows:

(1) the cover body 2 is connected to the container body 1, and then the push button 4 is rotated clockwise until the engaging protrusion 41 leaves the limiting groove 52 and enters the engaging groove 51 and abuts against the side wall of the first limiting portion 24 or the second limiting portion 25.

(2) When the key 4 is released, the piston elastic member 33 rebounds to drive the piston assembly 3 and the key 4 to move upwards synchronously. Referring to fig. 5, 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 lifts the pumping gasket 7, the pumping hole 221 is opened, and the gas in the first chamber a enters the second chamber b through the pumping hole 221, so that a part of the gas in the first chamber a is pumped out 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 exhaust seal 8 to cover the exhaust hole 31, and therefore, the exhaust hole 31 remains closed.

(3) When the push button 4 reaches the highest position, the push button 4 is pressed downward, the push button 4 drives the piston assembly 3 to move downward synchronously through the piston driving member 38, and the piston elastic member 33 is compressed until the lower side surface of the piston head 32 abuts against the supporting portion 23 of the cover 2. 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 jacks up the exhaust gasket 8, the exhaust hole 31 is opened, and the air in the second chamber b flows through the exhaust hole 31, the gap between the piston main body part 37 and the piston driving part 38, the exhaust groove 35 on the piston head part 32, the gap between the piston head part 32 and the button 4, and the gap between the button 4 and the decorative body 5 in sequence and is exhausted to the outside, so that the air in the second chamber b is exhausted to the outside. At the same time, the air pressure difference between the second chamber b and the first chamber a causes the pumping gasket 7 to cover the pumping hole 221, and thus the pumping hole 221 remains closed.

(4) The operation of loosening and pressing the key 4 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 vacuum, or the gas in the first chamber a is partially pumped out until the first chamber a is at a required air pressure value, thereby meeting different requirements of different articles contained in the container body 1 on the air pressure and expanding the application range of the vacuum-pumping device.

Fig. 13 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 push button 4 is pressed downward, the push button 4 drives the piston assembly 3 to move downward synchronously through the piston driving member 38, and the piston elastic member 33 is compressed until the lower side surface of the piston head 32 abuts against the supporting portion 23 of the cover body 2. 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) The push button 4 is rotated counterclockwise while keeping the push button 4 pressed downward, so that the fitting projection 41 is moved out of the fitting groove 51 into the stopper groove 52. When the engaging projection 41 abuts against the side wall of the stopper groove 52, the rotation is stopped and the push button 4 is released, and the engaging projection 41 slightly moves upward until it abuts against the top wall of the stopper groove 52 by the restoring force of the piston elastic member 33. At this time, the button 4 is snapped on the garnish 5 so that the piston assembly 3 is maintained at a fixed position, and the suction hole 221 and the discharge hole 31 are both kept closed, thereby maintaining the first chamber a in a vacuum state or at a desired air pressure value.

Figure 14 shows an operational view of the evacuation device inflating the first chamber a. The operation process of inflation is as follows:

(1) the key 4 is rotated clockwise until the engaging protrusion 41 leaves the limiting groove 52 and enters the engaging groove 51 and abuts against the side wall of the first limiting part 24 or the second limiting part 25.

(2) When the key 4 is released, the piston elastic member 33 rebounds to drive the piston assembly 3 and the key 4 to move upwards synchronously.

(3) After the key 4 reaches the highest position, the key 4 continues to be rotated clockwise until the engaging protrusion 41 of the key 4 abuts against the side wall of the engaging groove 51 (i.e., the side wall of the engaging groove 51 on the side away from the adjacent limiting groove 52), and at this time, the engaging protrusion 41 is located above the inflation guide rod 6.

(4) The key 4 is pressed downwards until one of the matching protrusions 41 of the key 4 presses the inflation guide rod 6 into the first limiting portion 24 of the cover 2 and presses against the top of the first limiting portion 24, and the other matching protrusion 41 presses against the top of the second limiting portion 25, so that the two sides of the key 4 are uniformly stressed, and the key 4 is prevented from shaking (see fig. 15-18) when pressed. When the inflation guide bar 6 moves down, the inflation hole 222 is opened, and the outside air enters the first chamber a through the gap between the decoration body 5 and the key 4, the gap between the inflation guide bar 6 and the first limiting portion 24, and the gap between the inflation guide bar 6 and the inflation hole 222 in sequence.

(5) After the state of pressing the button 4 is maintained for a while, the air pressure in the first chamber a is balanced with the outside, and the cover 2 can be easily detached from the container body 1, thereby taking out the object 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 first cavity by simply rotating, pressing and loosening the key 4 of the vacuumizing device, does not need auxiliary tools, and is convenient to operate and carry; the concave part 22 for accommodating the decorative body 5, the key 4 and the piston assembly 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.