WO2019085127A1

WO2019085127A1 - Vacuum flask

Info

Publication number: WO2019085127A1
Application number: PCT/CN2017/113810
Authority: WO
Inventors: 魏宏华
Original assignee: 魏宏华
Priority date: 2017-10-30
Filing date: 2017-11-30
Publication date: 2019-05-09
Also published as: CN107640444B; CN107640444A

Abstract

A vacuum flask, relating to the field of liquid containers. The vacuum flask comprises a flask lid (1) and a flask body (2). The flask lid (1) comprises an outer lid (10), an inner lid (11), a pressure relief base (12), and an air suction assembly (13). An outer peripheral wall of a lower end of the inner cover (11) is provided with a first seal ring (15). The first seal ring (15) seals a flask opening. A bottom wall of the inner cover (11) is provided with a first vacuum opening (112). The first vacuum opening (112) is provided with a first check valve (113). The bottom wall of the inner cover (11) is further provided with a pressure relief opening (114). The pressure relief base (12) has a chamber (120) with an open upper end. A lower end of the pressure relief base (12) is provided with a second seal ring (16). The second seal ring (16) blocks the pressure relief opening (114). The bottom of the chamber (120) is provided with a second vacuum opening (122) communicating with the first vacuum opening (112). The air suction assembly (13) comprises an air pump inner cylinder (130) and an air pump inner cylinder bottom ring (131). The air pump inner cylinder bottom ring (131) engages with the chamber (120) to form a vacuum chamber. A return spring (18) is provided between the chamber (120) and the air pump inner cylinder bottom ring (131).

Description

Vacuum cup

[0001] The present invention relates to a liquid container, and more particularly to a vacuum cup that can be used for fresh-keeping storage of foods, beverages, and the like, which is easy to remove and wash. The invention is based on the application date of October 30, 2017, and the application number is CN201711042666.

The Chinese invention patent of 3, the content of which is incorporated herein by reference.

Background technique

[0002] Foods and beverages are in contact with air and are easily oxidized by oxygen in the air, thereby corroding and deteriorating. In order to prolong the storage of food and beverages, the above substances are often stored in closed containers. However, there is still air in the existing closed container, which still causes corrosion, so that the food and drink are not stored for a long time, and the quality of preservation is not reliable.

[0003] There is a fresh-keeping cup, which is provided with a suction port on the cup cover of the fresh-keeping cup, and the suction port has a self-sealing function, and an air pump is connected to the air suction port, and the air in the fresh-keeping cup can be extracted, thereby realizing the vacuum. Preservation. However, this type of fresh-keeping cup needs to be evacuated by means of an air pump, which is very inconvenient to carry.

[0004] The utility model patent issued by the applicant on August 29, 2016, having the nickname CN206032211U, discloses a "vacuum fresh juice cup" comprising a cup body and a lid, a lid The utility model comprises a top cover and a bottom cover, wherein the bottom cover is provided with a first air hole, the top cover is provided with a first through hole; and the air pump is arranged on the cup cover, the air pump comprises a gas pump positioning cylinder, an air pump inner cylinder and a gas pump outer cylinder, and is pressed The air pump discharges the air inside the cup. The vacuum fresh-keeping juice cup can extract the air in the cup body to achieve the function of preserving freshness, and the air pump is directly disposed on the cup cover for convenient carrying. However, the removal of the lid of the juice cup is very inconvenient, and it is difficult to clean the inside of the lid; when the juice cup is inverted, the liquid in the cup body is easily leaked from the first air hole of the lid; and the juice cup is not released. The device is difficult to smash after the vacuum is applied, which is inconvenient to use.

technical problem

[0005] It is an object of the present invention to provide a vacuum cup for facilitating the removal and washing of the vacuum cup, improving the sealing effect of the vacuum cup and facilitating carrying.

[0006] Technical solutions

[0007] In order to achieve the above object, a vacuum cup provided by the present invention includes a cup cover and a cup body, wherein the cup cover includes an outer portion a cover, an inner cover, a pressure relief seat and a suction assembly, the inner side of the lower end of the outer cover is provided with a first thread adapted to the outer side of the cup mouth; the upper end of the inner cover is connected with the upper end of the outer cover, the outer cover and the inner An annular gap is formed between the covers, and a first sealing ring is disposed on the outer peripheral wall of the lower end of the inner cover, the cup opening is located in the annular gap, the first sealing ring seals the cup mouth, and the bottom wall of the inner cover is disposed inside the cup body a first vacuuming port connected to the cavity, a first one-way valve is disposed at the first vacuuming port, the first one-way valve controls the closing of the first vacuuming port, and the bottom wall of the inner cover is further provided with a cup a pressure relief port communicating with the inner cavity of the body, the inner peripheral wall of the inner cover is provided with a second thread; the pressure relief seat has a cavity with an open upper end, and the outer peripheral wall of the pressure relief seat is provided with the second thread The third thread, the lower end of the pressure relief seat is provided with a second sealing ring, the second sealing ring is sealed on the pressure releasing port, and the bottom of the chamber is provided with a second vacuuming port communicating with the first vacuuming port; The air pumping component comprises a gas pump inner cylinder and a gas pump inner cylinder bottom ring, and the air pump inner cylinder sleeve is set on the air pump On the bottom ring of the inner cylinder, a positioning groove is formed at a position where the inner cylinder of the air pump and the bottom ring of the inner cylinder of the air pump are fitted, and a third sealing ring is disposed in the positioning groove, and the third sealing ring is interference fit with the inner wall of the pressure relief seat, positioning The upper end of the slot is provided with at least one exhaust port, and a gap is formed between the gap from the exhaust port to the groove bottom of the third seal ring and the positioning groove to the gap between the lower edge of the third seal ring and the lower edge of the positioning groove Exhaust passage; the inner bottom ring of the air pump cooperates with the chamber to form a vacuum chamber, and a return spring is arranged between the bottom of the chamber and the bottom ring of the air pump inner cylinder.

[0008] A specific solution is that the cup cover further includes a self-locking knob, and the self-locking knob is sleeved on the inner cylinder of the air pump, and the outer peripheral wall of the inner cylinder of the air pump is provided with a sliding slot in the axial direction, and the upper end portion of the sliding slot The port is larger than the lower end of the chute, and a limit step is formed between the upper end of the chute and the lower end of the chute. The self-locking knob is provided with a locking block adapted to the chute, and the locking block can be slid Slot sliding, rotating the self-locking knob to abut the locking block on the limit step.

[0009] Another specific solution is that a second one-way valve is disposed at the second vacuuming port, and the second one-way valve controls the closing of the second vacuuming port.

[0010] In another specific solution, the bottom of the pressure relief seat has a first mounting seat that is upwardly convex, and the top of the bottom ring of the inner cylinder of the air pump has a second mounting seat that is downwardly convex, and the two ends of the return spring are respectively sleeved. It is arranged on the first mount and the second mount. The second vacuum port is disposed in the axial direction of the first mount. A buffer chamber is formed between the first mounting seat and the inner cover, the first vacuuming port is located at the bottom of the buffering chamber, and the first vacuuming port is disposed opposite to the second vacuuming port.

[0011] In another specific solution, the first sealing ring and the second sealing ring are both u-shaped sealing rings. First seal Both the second sealing ring and the second sealing ring are provided with raised ears.

[0012] In another specific solution, the third sealing ring is a 0-shaped sealing ring.

[0013] In another specific solution, the upper end peripheral wall of the inner cover is provided with an annular convex edge and a convex block, and the convex block is located above the annular convex edge, and a latching groove is formed between the convex block and the annular convex edge, and the upper end of the outer cover A card block is disposed on the peripheral wall corresponding to the card slot, and the card block is stuck in the card slot.

Problem solution

Advantageous effects of the invention

Beneficial effect

[0014] The vacuum cup provided by the invention has two vacuum ports on the cup cover, which can improve the sealing property of the cup cover and prevent liquid leakage, and can be smashed and closed by the pressure relief seat to control the inside of the cup body. In the vacuum environment, it is convenient to open the lid of the cup. The pressure relief seat and the inner cover of the cup cover are threaded and matched. It is convenient to disassemble and assemble, and the cup lid can be removed for cleaning.

[0015] Moreover, the air suction assembly can be pressed into the vacuum chamber by the self-locking knob, so that the air suction assembly does not protrude from the surface of the cup cover, is convenient to carry, and is more beautiful.

[0016] In addition, the provision of two check valves can serve as a double fuse, wherein one check valve damages the other and can also function, and the two check valves can further prevent leakage and prevent liquids. Enter the role of the suction device.

[0017] In addition, the limiting action of the return spring by the first mounting seat and the second mounting seat prevents the return spring from shifting, and the return spring is more stable in the rebounding spring; the function of the buffering cavity can improve the leakage preventing effect of the cup cover. .

[0018] In addition, the U-shaped sealing ring is easy to install, and can better seal the air outlet, and the ear is conveniently arranged to be removed.

[0019] Furthermore, the outer cover and the inner cover are connected by means of snapping, and the loading and unloading is very convenient.

Brief description of the drawing

DRAWINGS

1 is a structural view of an embodiment of a vacuum cup of the present invention.

2 is a partial cross-sectional view of an embodiment of a vacuum cup of the present invention.

3 is an exploded perspective view of the cup cover of the embodiment of the vacuum cup of the present invention. 4 is a structural view of an inner cover of an embodiment of a vacuum cup of the present invention.

5 is a structural view of a pressure relief seat of an embodiment of a vacuum cup of the present invention.

6 is a structural exploded view of the suction assembly of the vacuum cup embodiment of the present invention.

7 is a structural view of a self-locking knob of the vacuum cup embodiment of the present invention.

8 is a structural view of a first seal ring of the embodiment of the vacuum cup of the present invention.

9 is a structural view of a second seal ring of the embodiment of the vacuum cup of the present invention.

10 is a structural view showing a modification of the first seal ring of the embodiment of the vacuum cup of the present invention.

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Embodiments of the invention

[0031] The invention mainly improves the structure of the cup lid in the vacuum cup, improves the efficiency of vacuuming the cup cover and the convenience of disassembly and assembly of the cup cover, prevents the liquid in the cup body from entering the cup cover, and improves the lid of the cup. The sealing performance improves the portability and aesthetics of the vacuum cup.

[0032] Referring to Figure 1, Figure 1 is a block diagram of an embodiment of a vacuum cup of the present invention. In this embodiment, the vacuum cup comprises a cup cover 1 and a cup body 2. The cup body 2 can be made of plastic, glass, stainless steel, etc., and the vacuum cup is mainly used for juice, beverage, etc., using the cup cover 1 to the cup body 2 Vacuuming inside, it is possible to preserve the juice, beverages, etc. stored therein, and to increase the storage time.

2 and FIG. 3, FIG. 2 is a cross-sectional view of the embodiment of the vacuum cup of the present invention, FIG. 3 is an exploded view of the cup cover of the embodiment of the vacuum cup of the present invention, and FIG. 2 omits part of the structure of the cup body. . In the present embodiment, the cup body 2 is composed of two layers of stainless steel material, the inner layer 20 and the outer layer 21. The lid 1 includes an outer cover 10, an inner cover 11, a pressure relief seat 12, a suction assembly 13 and a self-locking knob 14. The inner side of the lower end of the outer cover 10 is provided with a first fit to the outer side of the cup opening of the cup 2. Thread 100.

2, FIG. 3 and FIG. 4, FIG. 4 is a structural view of an inner cover of the vacuum cup embodiment of the present invention. The upper end of the inner cover 11 is connected to the upper end of the outer cover 10. The upper end of the inner cover 11 is provided with an annular flange 110 and a protrusion 111. The protrusion 111 has a semicircular cross section, and the protrusion 111 is located at the annular flange 110. A card slot is formed between the protrusion 111 and the annular flange 110. The upper end wall of the outer cover 10 is provided with a card block 101 corresponding to the card slot, and the card block 101 is engaged in the card slot. The loading and unloading of the outer cover 10 and the inner cover 11 is very convenient. An annular gap 102 is formed between the outer cover 10 and the inner cover 11, and the first outer wall of the lower end of the inner cover 11 is provided with a first dense Sealing ring 15. Covering the lid 1, the cup opening of the cup 2 is located in the annular gap 102, and the first sealing ring 15 seals the cup opening. The bottom wall of the inner cover 11 is provided with a first vacuuming port 112 communicating with the inner cavity of the cup body 2. The first vacuuming port 112 is provided with a first one-way valve 113, and the first one-way valve 113 includes a plug. The body 1130 and the engaging portion 11 31, the engaging portion 1131 passes through the first vacuuming port 112 and the plug body portion 1130 is located on the first vacuuming port 112, and the first one-way valve 113 is blocked by the plug body portion 1130. The first vacuum port 112 is on. The bottom wall of the inner cover 11 is further provided with a pressure relief port 114 communicating with the inner cavity of the cup body 2, and the inner peripheral wall of the inner cover 11 is provided with a second thread 115.

2, FIG. 3 and FIG. 5, FIG. 5 is a structural view of a pressure relief seat of the vacuum cup embodiment of the present invention. The pressure relief seat 12 has a chamber 120 with an open upper end. The outer peripheral wall of the pressure relief seat 12 is provided with a third thread 121 adapted to the second thread 115, and the lower end of the pressure relief seat 12 is sleeved with a second sealing ring. The second sealing ring 16 is closed on the pressure releasing port 114. The bottom of the chamber 120 is provided with a second vacuuming port 122 communicating with the first vacuuming port 112, and the second vacuuming port 122 is provided with a first sealing port 122. The two-way valve 123 has a structure similar to that of the first one-way valve 113. The first one-way valve 113 and the second one-way valve 123 are made of a silicone material and have good elasticity. The second check valve 123 is blocked on the second vacuum port 122. The first one-way valve 113 is tightly mounted on the first vacuuming port 112, and the first one-way valve 113 is in contact with the upper end wall and the lower end wall of the first vacuuming port 112, depending on the deformation of the first one-way valve 113 itself. The first vacuuming port 112 is snored. In the natural state, the first one-way valve 113 can seal the first vacuuming port 113 well, and even if the vacuum cup is inverted, the liquid in the cup body 2 cannot pass through the first. The vacuum port 113 enters the pumping assembly 13 and has excellent leakproof performance. The second check valve 123 has a certain gap with the lower end wall of the second vacuum port 122, and the second check valve 123 is easily smashed during the vacuuming process. In addition, the provision of two check valves also serves as a double fuse, with one check valve damaging the other and functioning.

2, FIG. 3 and FIG. 6, FIG. 6 is a structural exploded view of the suction assembly of the vacuum cup embodiment of the present invention. The air pumping assembly 13 includes an air pump inner cylinder 130 and a gas pump inner cylinder bottom ring 131. The air pump inner cylinder 130 is sleeved on the air pump inner cylinder bottom ring 131, and the air pump inner cylinder 130 and the air pump inner cylinder bottom ring 131 are nested at a position. The positioning groove 13 2 is provided with a third sealing ring 17 in the positioning groove 132. The third sealing ring 17 is a 0-shaped sealing ring, and the third sealing ring 17 is interference-fitted with the inner wall of the pressure relief seat 12, and the upper end of the positioning groove 132 is disposed. There is at least one exhaust port 133 from the gap between the exhaust port 133 to the third seal ring 17 and the groove bottom of the positioning groove 132 to the lower edge of the third seal ring 17 and the lower edge of the positioning groove 132. The gap forms an exhaust passage 134 (shown by the arrow in the figure). The air pump inner cylinder bottom ring 131 cooperates with the chamber 120 of the pressure relief seat 12 to form an evacuation chamber, and a return spring 18 is disposed between the bottom of the chamber 120 and the air pump inner cylinder bottom ring 131. The bottom of the pressure relief seat 12 has an upwardly convex first mounting seat 124. The top of the air pump inner cylinder bottom ring 131 has a second mounting seat 1310 that is downwardly convex. The two ends of the return spring 18 are respectively sleeved at the first end. On the mounting seat 124 and the second mounting seat 1310, the first mounting seat 124 and the second mounting seat 1310 act to limit the return spring 18 to prevent the return spring 18 from shifting. The second vacuum port 122 is disposed in the axial direction of the first mount 124. A buffer chamber 116 is formed between the first mounting seat 124 and the inner cover 11, the first vacuuming port 112 is located at the bottom of the buffer chamber 116, and the first vacuuming port 112 is disposed opposite to the second vacuuming port 122, and two pumping ports are provided. The advantage of vacuum is that it can play a double protection role to prevent air leakage; the function of the buffer chamber 116 can prevent the vacuum cup from being inverted and liquid leakage. The outer peripheral wall of the air pump inner cylinder 130 is provided with a sliding groove 1301 in the axial direction, and the upper end opening of the sliding groove 1301 is larger than the lower end opening of the sliding groove 1301, and the upper end portion of the sliding groove 1301 and the lower end portion of the sliding groove 1301 A limit step 1302 is formed between them. The upper end portion of the air pump inner cylinder 130 is recessed downward to form a square mounting hole 1303, and the pressing handle 135 is attached to the upper end of the air pump inner cylinder 130 through the mounting boss 1350.

2, FIG. 3, FIG. 6, and FIG. 7, FIG. 7 is a structural view of a self-locking knob of the vacuum cup embodiment of the present invention. The self-locking knob 14 is sleeved on the air pump inner cylinder 130. The self-locking knob 14 is provided with a locking block 140 adapted to the sliding slot 1301. The locking block 140 can slide along the sliding slot 1301, and the rotation self-locking knob 14 can be locked. Block 140 abuts on limit step 1302. The outer edge of the lower end of the self-locking knob 14 is provided with a protrusion 141. The self-locking knob 14 further has a downwardly-shaped annular groove 142. The upper end of the pressure relief seat 12 is provided with an annular protrusion corresponding to the annular groove 142. 124, the annular groove 142 is sleeved on the annular protrusion 124, and the protrusion 141 is engaged with the upper end of the pressure relief seat 12.

[0038] Referring to Figures 8, Figure 8 is a structural view of a first sealing ring of the vacuum cup embodiment of the present invention. In the present embodiment, the first sealing ring 15 is a U-shaped sealing ring, and the U-shaped sealing ring means that the sealing ring has a U-shaped cross section, that is, a U-shaped groove 150 is formed on the inner peripheral wall of the first sealing ring 15 through The U-shaped groove 150 mounts the first seal ring 15 on the annular bead 117 (see Fig. 2) of the outer peripheral wall of the lower end of the inner cover 11. The outer edge of the upper end of the first seal ring 15 is provided with a raised ear portion 151 which facilitates removal of the first seal ring 15 from the annular flange 1 17 of the inner cover 11.

Referring to FIG. 9, FIG. 9 is a structural view of a second seal ring of the vacuum cup embodiment of the present invention. In this embodiment, the second sealing ring 16 is also a U-shaped sealing ring, and a U-shaped groove 160 is formed on the inner peripheral wall of the second sealing ring 16 . The second seal ring 16 is mounted by the U-shaped groove 160 on the annular bead 127 (see Fig. 2) of the outer peripheral wall of the lower end of the pressure relief seat 12. The lower inner edge of the second seal ring 16 is provided with a convex ear portion 161, and the ear portion 161 can facilitate the removal of the second seal ring 16 from the annular flange 127 of the pressure relief seat 12.

[0040] A method of using the vacuum cup of the present invention will be described in detail below with reference to FIGS. 1 through 9.

[0041] After the lid 1 is assembled, the lid 1 is placed over the cup 2, and the lid 1 is tightened so that the lid 1 is sealed at the mouth end of the cup 2. Rotating the pressure relief seat 12 causes the second sealing ring 16 to block the pressure relief port 114, rotates the self-locking knob 14 to change from the locked state to the unlocked state, and the return spring 18 pushes the suction assembly 13 upward by its own resilience Moving, the third sealing ring 17 is pressed against the downward friction of the inner wall of the pressure relief seat 12 against the lower end of the positioning groove 132, and the third sealing ring 17 lowers the lower edge of the third sealing ring 17 with the positioning groove. The gap between the lower edges of 132 is sealed such that the exhaust passage 134 is closed. During the upward movement of the inner cylinder bottom ring 131 of the air pump, the volume of the vacuum chamber formed by the combination of the inner cylinder bottom ring 131 of the air pump and the chamber 120 of the pressure relief seat 12 is increased, and the pressure in the vacuum chamber is increased due to the closing of the exhaust passage 134. Decreasing, the pressure in the cup body 2 is stronger than the pressure in the vacuum chamber, and the air in the cup body 2 pushes the first check valve 113 and the second check valve 116 into the vacuum chamber until the cup body 2 and the vacuum chamber The pressure is again balanced.

[0042] After the return spring 18 returns to the natural state, the air suction assembly 13 is no longer moved upward, pushing the pressing handle 135 downward, causing the air suction assembly 13 to move downward, and the third sealing ring 17 is subjected to the inner wall of the pressure relief seat 12. The upward frictional force acts upwardly against the upper end of the positioning groove 132, and the lower edge of the third sealing ring 17 is smashed with the gap between the lower edges of the positioning groove 132, so that the exhaust passage 134 is smashed, and the bottom of the air pump is bottomed. During the downward movement of the ring 131, the volume of the evacuation chamber formed by the combination of the inner cylinder bottom ring 131 of the air pump and the chamber 120 of the pressure relief seat 12 is reduced, and the air in the evacuation chamber passes through the exhaust due to the venting of the exhaust passage 134. The passage 134 is discharged, and the first check valve 13 and the second check valve 116 are tightly sealed on the first vacuuming port 112 and the second vacuuming port 122 under the action of their own gravity and external atmospheric pressure to prevent air. Entering the cup 2 until the suction assembly 13 cannot be pushed down, the return spring 18 is in a compressed state. Pressing the handle 135 again, the return spring 18 pushes the suction assembly 13 upward by its own resilience, repeats the previous step, and draws the air in the cup 2, thus circulating, until a vacuum is formed in the cup 2.

[0043] When it is necessary to open the vacuum cup 吋, the pressure relief seat 12 is rotated such that the second sealing ring 16 moves upward with the pressure relief seat 12, the pressure relief port 114 is snoring, and the air enters the cup body 2 from the pressure relief port 114. , the vacuum inside the vacuum cup is released, making it easier to snoring. [0044] The components of the cup lid of the vacuum cup of the present invention are connected by snapping or screwing, so that it is convenient to disassemble and convenient for cleaning.

[0045] The vacuum cup of the present invention can also be used as a heat insulating cup, and the first sealing ring 15 is replaced with a sealing ring 30 as shown in FIG. 10, and the structure of the sealing ring 30 is similar to that of the first sealing ring 15, and is sealed. The ring 30 is also a U-shaped seal ring, and a U-shaped groove 300 is formed in the inner peripheral wall of the seal ring 30, and the seal ring 30 is attached to the annular flange 117 of the outer peripheral wall of the lower end of the inner cover 11 through the U-shaped groove 300. The outer edge of the upper end of the seal ring 30 is also provided with a raised ear portion 301. The sealing ring 30 is different from the first sealing ring 15 in that: the sealing ring 30 is a sealing ring at one end, and the bottom of the sealing ring 30 is a closed end 302, but the first sealing ring 15 is a sealing ring which is a mouth at both ends. . Since the closed end 302 covers the bottom of the inner cover 11, the heat can be effectively prevented from being dissipated, thereby maintaining the heat retention effect.

[0046] Of course, the above embodiment is only a preferred embodiment of the present invention, and there may be more changes in the practical application, for example, the first sealing ring is a 0-shaped sealing ring; or a simple change in the structure of the cup body, etc. Wait. The present invention is also intended to be within the spirit and scope of the invention, and all modifications, equivalents, improvements and the like are intended to be included within the scope of the appended claims.

Industrial Applicability

[0048] The vacuum cup of the present invention can be used as a fresh-keeping cup for food, soup, beverage, etc., since two vacuum ports are provided at the bottom of the lid, and each one of the vacuum ports is provided with a one-way valve, which can In the role of double insurance, one of the check valves fails, and the other check valve can also function as a seal. The two check valves are also provided to further improve the sealing performance of the cup cover and prevent the liquid in the cup from passing through. One of the check valves can be accessed directly into the lid. The pumping component on the lid can effectively pump the vacuum cup, and the air in the cup body is taken out. The check valve prevents air from entering the cup body, keeps the cup body in a vacuum environment, and isolates the material stored in the cup body from the air. Extends the effect of storage and preservation. The self-locking knob provided on the lid of the cup can lock the suction assembly in the lid under non-vacuum conditions, so that the suction assembly does not protrude from the surface of the lid, which improves the portability of the carrying, and the overall appearance will be More beautiful. The pressure relief seat on the lid of the cup can smash the pressure relief port, allowing air to enter the cup body and releasing the vacuum inside the cup body to facilitate the cup lid. The components on the cup cover are screwed or snapped together, which greatly improves the convenience of disassembly of the cup cover and facilitates cleaning of the inside of the cup cover.

Claims

Claim

[Claim 1] a vacuum cup, comprising a cup cover and a cup body, wherein: the cup cover comprises an outer cover, an inner cover, a pressure relief seat and a suction assembly, and the inner side of the lower end of the outer cover is provided with a first thread adapted to the outside of the cup mouth; the upper end of the inner cover is connected to the upper end of the outer cover, an annular gap is formed between the outer cover and the inner cover, and the lower end of the inner cover a first sealing ring is disposed on the outer peripheral wall, the cup opening is located in the annular gap, the first sealing ring seals the cup opening, and the bottom wall of the inner cover is disposed on the bottom wall of the inner cover a first vacuuming port communicating with the inner cavity, a first one-way valve disposed at the first vacuuming port, the first one-way valve controlling a closing of the first vacuuming port, the inner cover The bottom wall is further provided with a pressure relief port communicating with the inner cavity of the cup body, the inner peripheral wall of the inner cover is provided with a second thread; the pressure relief seat has a chamber with an open upper end, The outer peripheral wall of the pressure relief seat is provided with a third thread adapted to the second thread, the pressure relief seat a second sealing ring is disposed on the lower end, the second sealing ring is sealed on the pressure releasing port, and a second vacuuming port communicating with the first vacuuming port is disposed on the bottom of the chamber; The air pumping assembly comprises an air pump inner cylinder and a gas pump inner cylinder bottom ring, wherein the air pump inner cylinder is sleeved on the inner bottom ring of the air pump, and the air pump inner cylinder and the air pump inner cylinder bottom ring are formed at a sleeve. a positioning groove, a third sealing ring is disposed in the positioning groove, the third sealing ring is in interference fit with the inner wall of the pressure releasing seat, and the upper end of the positioning groove is provided with at least one exhaust port, a gap between the exhaust port to the gap between the third seal ring and the groove bottom of the positioning groove to a gap between a lower edge of the third seal ring and a lower edge of the positioning groove forms an exhaust passage; The inner cylinder bottom ring of the air pump cooperates with the chamber to form an evacuation chamber, and a return spring is disposed between the bottom of the chamber and the bottom ring of the air pump inner cylinder.

[Claim 2] The vacuum cup according to claim 1, wherein: the cup cover further comprises a self-locking knob, the self-locking knob is sleeved on the inner cylinder of the air pump, and the inner cylinder of the air pump The outer peripheral wall is provided with a sliding groove in the axial direction, the upper end of the sliding groove is larger than the lower end of the sliding groove, between the upper end of the sliding groove and the lower end of the sliding groove Forming a limit step, the self-locking knob is provided with a locking block adapted to the sliding slot, the locking block is slidable along the sliding slot, and rotating the self-locking knob can abut the locking block Connected to the limit On the steps.

[Claim 3] The vacuum cup according to claim 1, wherein: the second vacuuming port is provided with a second one-way valve, and the second one-way valve controls the second vacuuming port Closed.

[Claim 4] The vacuum cup according to claim 1, wherein: the bottom of the pressure relief seat has a first mounting seat that is upwardly convex, and the top of the bottom ring of the air pump has a downward convex The second mounting seat has two ends of the return spring sleeved on the first mounting seat and the second mounting seat.

[Claim 5] The vacuum cup according to claim 4, wherein: the second vacuum port is disposed in an axial direction of the first mount.

[Claim 6] The vacuum cup according to claim 5, wherein: a buffer chamber is formed between the first mounting seat and the inner cover, and the first vacuuming port is located at the bottom of the buffer chamber The first vacuum port is disposed opposite the second vacuum port.

[Claim 7] The vacuum cup according to any one of claims 1 to 6, wherein the first seal ring and the second seal ring are U-shaped seal rings.

[Claim 8] The vacuum cup according to claim 7, wherein: the first seal ring and the second seal ring are provided with raised ears.

[Claim 9] The vacuum cup according to any one of claims 1 to 6, wherein the third seal ring is a 0-shaped seal ring.

[Claim 10] The vacuum cup according to any one of claims 1 to 6, wherein: the upper end peripheral wall of the inner cover is provided with an annular convex edge and a convex block, and the convex block is located at the annular convex a card slot is formed between the protrusion and the annular flange, and a card block is disposed on the peripheral wall of the upper end of the outer cover corresponding to the card slot, and the card block is engaged in the Inside the card slot.