An inflatable cup

Abstract

The invention relates to an inflatable cup, comprising a cup body with a cup mouth and a cup cover covering the cup mouth, characterized in that the cup cover comprises an inner cover, which is detachably connected with the cup body, and an inner part of the inner cover is provided with a pressure relief valve cavity which is in communication with an inner part of the cup body; a pressure relief valve core is movably arranged in the pressure relief valve cavity, and up and down movement of the pressure relief valve core can open or close a control port of the pressure relief valve cavity; a pressure relief spring makes the pressure relief valve core always have a tendency to move outward to close the control port of the pressure relief valve cavity; an outer cover is circumferentially rotatably sleeved on an outer part of the inner cover, and a region is provided between a top wall of the outer cover and the inner cover; a moving piece is slidably constrained in the region, and downward movement of the moving piece can drive the pressure relief valve core to move downward to open the control port of the pressure relief valve cavity; and circumferential rotation of the outer cover can drive the moving piece to move, and the movement of the moving piece is driven by the circumferential rotation of the outer cover, so that the inner part of the inflatable cup can be relieved before being opened.

Description

Technical Field

[0001] This invention relates to containers, and more specifically to an inflatable cup. Background Technology

[0002] As people's living standards improve, their demands for drinking water are also constantly increasing. Traditional drinking water equipment, such as water dispensers with heating and / or cooling functions and water purifiers with filtration functions, can no longer meet people's needs. Drinking water equipment that produces water mixed with gas, such as oxygen-enriched water machines, hydrogen-enriched water machines, and sparkling water (i.e., carbonated water) machines, is gradually entering people's lives. These types of drinking water equipment directly pressurize oxygen, hydrogen, or carbon dioxide into a liquid container through a gasification device to form oxygen-enriched water, hydrogen-enriched water, and sparkling water.

[0003] Because the liquid container is under high pressure after being filled with gas, it is not easy to open. When the container is opened, liquid is prone to splashing and spraying out, which poses a significant safety hazard when using the liquid container. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an inflatable cup that can depressurize the inside of the inflatable cup before opening, in view of the above-mentioned technical status.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problem is as follows: an inflatable cup, comprising a cup body having a cup mouth and a cup lid that fits over the cup mouth, characterized in that: the cup lid includes

[0006] The inner lid is detachably connected to the cup body, and the inner lid has a pressure relief valve chamber that communicates with the interior of the cup body;

[0007] The pressure relief valve core is movable up and down in the pressure relief valve cavity, and the up and down movement of the pressure relief valve core can open or close the control port of the pressure relief valve cavity;

[0008] The pressure relief spring ensures that the pressure relief valve core always tends to move upward, thus closing the control port of the pressure relief valve chamber.

[0009] The outer cover is rotatably fitted onto the outside of the inner cover, and a region is provided between the top wall of the outer cover and the inner cover;

[0010] A movable component is constrained within the area, capable of sliding up and down. The downward movement of this component drives the pressure relief valve core downward, opening the control port of the pressure relief valve chamber. The movement of the movable component is driven by the circumferential rotation of the outer cover. Here, "up and down" refers to the orientation of the cup opening.

[0011] To simplify the structure of the inflatable cup, the outer cover and the movable part are connected by a first threaded structure, and a limiting structure is provided between the movable part and the inner cover, which can restrict the circumferential rotation of the movable part relative to the inner cover.

[0012] In order to complete the depressurization and opening of the inflatable cup in one go, the inner cover is connected to the cup body by a second threaded structure, and the direction of rotation of the second threaded structure is the same as that of the first threaded structure.

[0013] To simplify the limiting structure, the limiting structure includes two limiting posts and two limiting holes. Each limiting post passes through a corresponding limiting hole. The two limiting posts are spaced apart on the upper surface of the inner cover, and the two limiting holes are spaced apart on the moving part.

[0014] Alternatively, the limiting structure includes two limiting posts and two limiting holes, with each limiting post passing through a corresponding limiting hole. The two limiting posts are spaced apart on the moving part, and the two limiting holes are spaced apart on the upper surface of the inner cover.

[0015] To enhance the safety of the inflatable cup and facilitate lid assembly, the inner lid includes a body and a cover plate located above the body. The body and cover plate together define a safety valve cavity that communicates with the interior of the cup body. The safety valve cavity contains a safety valve core and a safety spring. The safety valve core can open or close the control port of the safety valve cavity, and the safety spring ensures that the safety valve core always has a tendency to close the control port of the safety valve cavity. A limiting post is located on the upper surface of the cover plate, and a limiting hole is formed on the moving part.

[0016] Further design: the first threaded structure includes a mating screw portion and a screw hole, the screw portion being located inside the outer cover, and the screw hole being located on the movable part;

[0017] Alternatively, the first threaded structure includes a mating screw portion and a screw hole, the screw portion being disposed on the movable member, and the screw hole being formed on the inner wall of the outer cover.

[0018] To facilitate the circumferential rotation of the outer cover, an annular guide groove is recessed on the outer peripheral wall of the inner cover, and a guide block that can slide and engage with the guide groove is provided on the inner peripheral wall of the outer cover.

[0019] To facilitate the assembly of the inner and outer covers, the upper end of the peripheral wall of the inner cover has at least one set of spaced notches, and elastic retaining feet are formed between the two notches in each set.

[0020] In a further design, the movable component is provided with a downwardly extending pin, which is inserted into the pressure relief valve cavity and abuts against the pressure relief valve core.

[0021] To improve the pressure resistance of the inflatable cup and facilitate positioning, the cup body is roughly capsule-shaped, with a base that opens at the top fitted to the lower outer end of the cup body. The inner wall of the base has a first annular rib, and the outer wall of the cup body has a first groove for the first rib to be fitted. The inner bottom wall of the base has a second conical rib, and the outer bottom wall of the cup body has a second groove for the second rib to be fitted. This roughly capsule-shaped structure improves the pressure resistance of the cup, but it is not easy to secure it when placed on a table. The structure of the base, rib, and groove provides better positioning for the cup.

[0022] Compared with the prior art, the advantages of this invention are as follows: the circumferential rotation of the outer cover can drive the moving part to move, thereby causing the pressure relief valve core to move up and down under the coordinated action of the moving part and the pressure relief spring. This allows the control port of the pressure relief valve chamber to be closed or opened, realizing pressure relief before opening the inflatable cup. This makes it easier to open the inflatable cup after it is inflated, and reduces the risk of liquid splashing or spraying out when opening the cup, thus reducing the safety hazards of using the inflatable cup and making it safer to use. The outer cover and the moving part are connected by a first threaded structure, and the inner cover is connected to the cup body by a second threaded structure. The rotation direction of the second threaded structure is consistent with the rotation direction of the first threaded structure. Before the pressure relief, the inner cover cannot rotate circumferentially with the outer cover due to the high pressure inside the cup body. However, after the pressure relief and when the moving part moves downward to the limit position, the outer cover and the inner cover can rotate circumferentially synchronously to open the inflatable cup. Thus, through the continuous rotation of the cup lid, the pressure relief and opening of the inflatable cup can be completed in one go, making the inflatable cup more convenient to use. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention;

[0024] Figure 2 This is a top view of Embodiment 1 of the present invention;

[0025] Figure 3 for Figure 2 Cross-sectional view along the AA direction (with the control port of the pressure relief valve chamber closed);

[0026] Figure 4 for Figure 3 Enlarged view of point C in the middle;

[0027] Figure 5 for Figure 2 A cross-sectional view along the AA direction (with the control port of the pressure relief valve chamber open);

[0028] Figure 6 for Figure 5 Enlarged view of point D in the middle;

[0029] Figure 7 for Figure 2 Cross-sectional view of the center valve cover in the BB direction;

[0030] Figure 8 This is a perspective view of the outer cover in Embodiment 1 of the present invention;

[0031] Figure 9 This is a three-dimensional structural diagram of the moving part in Embodiment 1 of the present invention;

[0032] Figure 10 This is a three-dimensional structural diagram of the main body in Embodiment 1 of the present invention. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] Example 1

[0035] like Figures 1-10 The diagram shows the preferred embodiment of the present invention.

[0036] The inflatable cup in this embodiment includes a cup body 1 and a cup lid 100. The upper end of the cup body 1 has a cup opening, and the cup lid 100 covers the cup opening. The cup lid 100 includes an inner lid 2, a pressure relief valve core 31, a pressure relief spring 41, an outer lid 5, and a movable component 6 (see...). Figure 3 and Figure 5 The inner lid 2 is detachably connected to the cup body 1, and the inner lid 2 has a pressure relief valve chamber 201 communicating with the interior of the cup body 1. The pressure relief valve core 31 is movably disposed within the pressure relief valve chamber 201, and the up-and-down movement of the pressure relief valve core 31 can open or close the control port of the pressure relief valve chamber 201. A pressure relief spring 41 is housed within the pressure relief valve chamber 201, and the pressure relief spring 41 ensures that the pressure relief valve core 31 always has an upward tendency to close the control port of the pressure relief valve chamber 201 (see...). Figure 4 and Figure 6 ).

[0037] The outer cover 5 is rotatably fitted onto the outside of the inner cover 2, and a region X is provided between the top wall of the outer cover 5 and the inner cover 2. The movable member 6 is slidably constrained in the region X, and the circumferential rotation of the outer cover 5 in the first direction can drive the movable member 6 to move downward, thereby driving the pressure relief valve core 31 to move downward to open the control port of the pressure relief valve chamber 201 (see...). Figure 6This allows for pressure relief before opening the inflatable cup, making it easier to open after inflation and reducing the risk of liquid splashing or spraying out, thus lowering safety hazards and making the inflatable cup safer to use. The reverse rotation of the outer cover 5 in the first direction drives the moving part 6 upward, causing the pressure relief valve core 31 to move upward under the action of the pressure relief spring 41 to close the control port of the pressure relief valve chamber 201 (see...). Figure 4 This design improves the sealing of the inflatable cup after pressure relief, preventing gas leakage. Specifically, the movable component 6 is equipped with a downwardly extending pin 63, which is inserted into the pressure relief valve chamber 201 and abuts against the pressure relief valve core 31. In this embodiment, there are two sets of pressure relief valves consisting of the pressure relief valve chamber 201, the pressure relief valve core 31, and the pressure relief spring 41. Correspondingly, there are also two pins 63, each of which cooperates with the pressure relief valve core 31 on the corresponding side.

[0038] The outer cover 5 and the movable part 6 are connected by a first threaded structure (see...). Figure 4 , Figure 6 and Figure 7 Specifically, the first threaded structure includes a threaded portion 52 disposed inside the outer cover 5 (see...). Figure 8 ), and the screw hole 62 provided on the movable part 6 (see Figure 9 Furthermore, a limiting structure is provided between the movable part 6 and the inner cover 2. This limiting structure can restrict the circumferential rotation of the movable part 6 relative to the inner cover 2. The cooperation between the first threaded structure and the limiting structure can convert the circumferential rotation of the outer cover 5 into the up-and-down movement of the movable part 6. The inner cover 2 is connected to the cup body 1 through a second threaded structure; specifically, the inner circumferential wall of the inner cover 2 is provided with an internal thread 211 (see...). Figure 10 The upper outer peripheral wall of the cup body 1 is provided with an external thread 13 that matches the internal thread 211 (see...). Figure 4 and Figure 6 Furthermore, the rotation direction of the second thread structure is consistent with that of the first thread structure, so that before the inflatable cup is depressurized, the inner cover 2 cannot rotate synchronously with the outer cover 5 due to the high pressure inside the cup body 1. However, after the inflatable cup is depressurized and the moving part 6 moves downward to its limit position, the outer cover 5 and the inner cover 2 can rotate synchronously to open the inflatable cup. Thus, through the continuous rotation of the cup cover 100, the depressurization and opening of the inflatable cup can be completed in one go, making the inflatable cup more convenient to use.

[0039] like Figure 7As shown, the inner cover 2 includes a body 21 and a cover plate 22 located above the body 21. The body 21 and the cover plate 22 together define a safety valve cavity 202 that communicates with the interior of the cup body 1. The safety valve cavity 202 contains a safety valve core 32 and a safety spring 42. The safety valve core 32 can open or close the control port of the safety valve cavity 202, and the safety spring 42 ensures that the safety valve core 32 always has a downward tendency to close the control port of the safety valve cavity 202. This allows the pressure inside the cup body 1 to be released after overpressure, making the inflatable cup safer to use. The limiting structure includes two limiting posts 221 spaced apart on the upper surface of the cover plate 22 and two limiting holes 611 spaced apart on the moving member 6. Each limiting post 221 passes through a corresponding limiting hole 611. Specifically, the outer peripheral wall of the screw hole 62 of the moving member 6 has two oppositely distributed lugs 61, and each limiting hole 611 is opened on a corresponding lug 61. In this embodiment, there are two sets of safety valves consisting of a safety valve chamber 202, a safety valve core 32, and a safety spring 42, and there are also two sets of limiting structures.

[0040] The outer peripheral wall of the body 21 has an annular guide groove 212 (see... Figure 10 The inner peripheral wall of the outer cover 5 is provided with a guide block 51 that can slide with the guide groove 212 (see...). Figure 8 This guides the outer cover 5 when it rotates circumferentially relative to the inner cover 2. The upper end of the peripheral wall of the body 21 has at least one set of spaced notches 213, and elastic retaining feet 214 are formed between the two notches 213 in each set (see...). Figure 10 This allows the inner cover 2 to be inserted into the outer cover 5 from bottom to top. Because the elastic locking feet 214 deform under force, they provide clearance for the guide block 51, enabling the guide block 51 to be smoothly inserted into the guide groove 212, facilitating the assembly of the inner cover 2 and the outer cover 5. Aligning the elastic locking feet 214 with the guide block 51 during assembly further simplifies the assembly of the inner cover 2 and the outer cover 5.

[0041] like Figure 4 , Figure 6 and Figure 7 As shown, the inner cover 2 also has an inflation valve chamber 203 inside, which contains an inflation valve core 33 and an inflation spring 43. The inflation valve core 33 can move up and down to close or open the control port of the inflation valve chamber 203. The upper surface of the outer cover 5 has an opening communicating with the inflation valve chamber 203, and the inflation valve core 33 is exposed on the upper surface of the outer cover 5 through this opening. This allows the inflation valve core 33 to be driven downwards by external force to open the control port of the safety valve chamber 202. The inflation spring 43 ensures that the inflation valve core 33 always has an upward tendency to close the control port of the inflation valve chamber 203, thereby facilitating inflation of the inflatable cup while improving its sealing performance.

[0042] like Figure 3 As shown, the cup body 1 is roughly capsule-shaped, which improves its pressure-bearing capacity. A base 7 with an open top is fitted onto the lower outer end of the cup body 1. A positioning structure is provided between the base 7 and the outer wall of the cup body 1 to facilitate positioning of the capsule-shaped cup body 1. This positioning structure includes a first annular rib 71 located on the top of the inner peripheral wall of the base 7, and a first groove 11 recessed on the outer peripheral wall of the cup body 1 for the first rib 71 to be fitted. The positioning structure also includes a second conical rib 72 located on the inner bottom wall of the base 7, and a second groove 12 recessed on the outer bottom wall of the cup body 1 for the second rib 72 to be fitted. This positioning structure provides good positioning effectiveness.

[0043] The working principle of the inflatable cup in this embodiment is as follows:

[0044] like Figure 4 , Figure 6 and Figure 7 As shown, under natural conditions, the pressure relief valve core 31 closes the control port of the pressure relief valve chamber 201 under the action of the pressure relief spring 41, the safety valve core 32 closes the control port of the safety valve chamber 202 under the action of the safety spring 42, and the inflation valve core 33 closes the control port of the inflation valve chamber 203 under the action of the inflation spring 43.

[0045] During inflation, the inflation valve core 33 is driven by external force to move downward against the elastic force of the inflation spring 43, thereby opening the control port (not shown in the figure) of the inflation valve chamber 203, completing the inflation process and bringing the inside of the cup body 1 into a high-pressure state. After inflation is complete, the inflation spring 43 resets the inflation valve core 33 and closes the control port of the safety valve chamber 202.

[0046] When it is necessary to pour out the gasified liquid, rotate the outer cover 5 circumferentially. Due to the high pressure inside the cup body 1, the inner cover 2 cannot rotate synchronously with the outer cover 5, causing relative rotation between the outer cover 5 and the inner cover 2. This causes the guide block 51 to slide in the guide groove 212. At the same time, the moving part 6 moves downward under the action of the first thread structure and the limiting structure, causing the pin 63 on the moving part 6 to press down the pressure relief valve core 31, thereby opening the control port of the pressure relief valve chamber 201 (see...). Figure 6 This allows for depressurization inside the cup body 1, making the inflatable cup easier to open and safer to use. When the moving part 6 moves downwards to its lowest position against the inner lid 2, the outer lid 5 continues to rotate circumferentially. At this point, the moving part 6 no longer moves downwards relative to the inner lid 2 but rotates synchronously with the outer lid 5 along with the inner lid 2 (not shown in the figure), thereby achieving a detachable connection between the inner lid 2 and the cup body 1 to open the cup.

[0047] During inflation or use, if the air pressure inside the cup body 1 is too high, the air pressure will drive the safety valve core 32 to move upward against the elastic force of the safety spring 42 (not shown in the figure), thereby opening the control port of the safety valve chamber 202 to release the pressure inside the cup body 1 and improve the safety performance of the inflatable cup.

[0048] Example 2

[0049] The difference between this embodiment and embodiment 1 is that the screw part is located on the movable part 6, and the screw hole is located on the outer cover 5.

[0050] Example 3

[0051] The difference between this embodiment and embodiment 1 is that the limiting hole is located on the cover plate 22 and is a blind hole, while the limiting post is located on the moving part 6.

[0052] Example 4

[0053] The difference between this embodiment and Embodiment 1 is that the inner lid and the cup body are engaged by a rib and a groove. The groove has a first section extending vertically and a second section extending circumferentially from the lower end of the first section, so that the groove is L-shaped when viewed from the side.

[0054] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. If the cup opening is located on the peripheral wall of the cup body 1, the reciprocating movement direction of the pressure relief valve core 31 is correspondingly horizontal or oblique.

Claims

1. An inflatable cup, comprising a cup body (1) having a rim and a lid (100) fitting over the rim, characterized in that: The cup lid (100) includes The inner lid (2) is detachably connected to the cup body (1), and the inner lid (2) is provided with a pressure relief valve chamber (201) communicating with the interior of the cup body (1); The pressure relief valve core (31) is movable up and down in the pressure relief valve chamber (201), and the up and down movement of the pressure relief valve core (31) can open or close the control port of the pressure relief valve chamber (201); The pressure relief spring (41) ensures that the pressure relief valve core (31) always has an upward tendency to close the control port of the pressure relief valve chamber (201); The outer cover (5) is rotatably fitted onto the outside of the inner cover (2), and a region (X) is provided between the top wall of the outer cover (5) and the inner cover (2); The movable part (6) is slidably constrained in the region (X), and the downward movement of the movable part (6) can drive the pressure relief valve core (31) to move downward and open the control port of the pressure relief valve chamber (201). The movement of the movable part (6) is driven by the circumferential rotation of the outer cover (5). The movable part (6) is provided with a downwardly extending pin (63), which is inserted into the pressure relief valve cavity (201) and abuts against the pressure relief valve core (31).

2. The inflatable cup according to claim 1, characterized in that: The outer cover (5) and the movable part (6) are connected by a first threaded structure, and a limiting structure is provided between the movable part (6) and the inner cover (2), which can limit the circumferential rotation of the movable part (6) relative to the inner cover (2).

3. The inflatable cup according to claim 2, characterized in that: The inner cover (2) is connected to the cup body (1) by a second threaded structure, and the direction of rotation of the second threaded structure is consistent with the direction of rotation of the first threaded structure.

4. The inflatable cup according to claim 2, characterized in that: The limiting structure includes two limiting posts (221) and two limiting holes (611). Each limiting post (221) passes through the corresponding limiting hole (611). The two limiting posts (221) are spaced apart on the upper surface of the inner cover (2), and the two limiting holes (611) are spaced apart on the moving part (6). Alternatively, the limiting structure includes two limiting posts (221) and two limiting holes (611), with each limiting post (221) passing through the corresponding limiting hole (611). The two limiting posts are spaced apart on the moving part, and the two limiting holes are spaced apart on the upper surface of the inner cover.

5. The inflatable cup according to claim 4, characterized in that: The inner cover (2) includes a body (21) and a cover plate (22) located above the body (21). The body (21) and the cover plate (22) together define a safety valve cavity (202) that communicates with the interior of the cup body (1). The safety valve cavity (202) is provided with a safety valve core (32) and a safety spring (42). The safety valve core (32) can open or close the control port of the safety valve cavity (202). The safety spring (42) makes the safety valve core (32) always have a tendency to close the control port of the safety valve cavity (202). The limiting post (221) is provided on the upper surface of the cover plate (22), and the limiting hole (611) is opened on the moving part (6).

6. The inflatable cup according to claim 2, characterized in that: The first threaded structure includes a matching screw portion (52) and a screw hole (62), wherein the screw portion (52) is located inside the outer cover (5), and the screw hole (62) is located on the movable part (6); Alternatively, the first threaded structure includes a mating screw portion (52) and a screw hole (62), the screw portion being disposed on the movable member (6), and the screw hole being opened on the inner wall of the outer cover (5).

7. The inflatable cup according to any one of claims 1 to 6, characterized in that: The outer peripheral wall of the inner cover (2) is recessed with an annular guide groove (212), and the inner peripheral wall of the outer cover (5) is provided with a guide block (51) that can slide with the guide groove (212).

8. The inflatable cup according to claim 7, characterized in that: The inner cover (2) has at least one set of spaced notches (213) on its upper peripheral wall, and elastic retaining feet (214) are formed between the two notches (213) in each set.

9. The inflatable cup according to any one of claims 1 to 6, characterized in that: The cup body (1) is roughly capsule-shaped, and a base (7) with an open top is fitted on the lower outer end of the cup body (1). The top of the inner peripheral wall of the base (7) is provided with a first annular rib (71). The outer peripheral wall of the cup body (1) is recessed with a first groove (11) for the first rib (71) to be fitted. The inner bottom wall of the base (7) is provided with a second conical rib (72). The outer bottom wall of the cup body (1) is recessed with a second groove (12) for the second rib (72) to be fitted.

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