A pressure-releasing water-boiling cup cover

Abstract

The utility model relates to a pressure-relieving cup cover for a water-boiling cup. The pressure-relieving cup cover for a water-boiling cup described in the utility model comprises: an outer cover is provided with an exhaust port; an inner cover is connected to the outer cover and surrounds a receiving cavity connected to the exhaust port, and the inner cover is provided with an exhaust port connected to the receiving cavity; a pressure-relieving assembly comprises a plug body, an elastic member and a breathable membrane, the elastic member presses the plug body toward the inner cover so that the plug body covers the exhaust port, the plug body is also provided with an exhaust port connected to the exhaust port, the exhaust film covers the exhaust port and is connected to the plug body, and the exhaust film is located on the side of the plug body away from the exhaust port. The pressure-relieving cup cover for a water-boiling cup described in the utility model has the advantages of high safety and stable structure.

Description

Technical Field

[0001] The utility model relates to the field of water-boiling cups, in particular to a water-boiling cup cover capable of relieving pressure. Background Art

[0002] A water-boiling cup is a product that can heat the liquid it contains. It is popular among users in the market because of its compact structure and easy portability. At present, water-boiling cups on the market usually include a cup body for holding liquid and a cup cover arranged on the cup body. Since the water-boiling cup needs to have a certain heat preservation function, the cup cover is usually sealed with the cup body, but the pressure in the inner cavity will increase after the liquid is heated. If the air is not exhausted in time, it is easy to explode. Therefore, the current water-boiling cup usually uses a breathable membrane at the cup cover to exhaust air, thereby adjusting the internal air pressure. However, it is usually difficult for users to check whether the breathable membrane has failed. If the breathable membrane fails, the air pressure inside the cup body cannot be discharged in time when the heating is continued. The continuous accumulation of air pressure will form high pressure. At this time, once the cover is opened, an accident of hot water spraying and scalding will occur. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a pressure-releasing water-boiling cup cover, which has the advantages of high safety and stable structure.

[0004] A pressure-releasing water-boiling cup cover, comprising:

[0005] An outer cover, wherein an exhaust port is provided on the outer cover;

[0006] An inner cover, the inner cover is connected to the outer cover and surrounds a receiving cavity communicated with the exhaust port, and the inner cover is provided with an air release port communicated with the receiving cavity;

[0007] The pressure relief assembly includes a plug body, an elastic member and a breathable membrane. The elastic member presses the plug body toward the inner cover so that the plug body covers the air relief port. The plug body is also provided with an air vent connected to the air relief port. The air vent membrane covers the air vent and is connected to the plug body. The air vent membrane is located on a side of the plug body away from the air relief port.

[0008] The utility model discloses a cup lid for boiling water cup capable of relieving pressure. The high pressure inside the cup body can be released by pushing the plug body to open the vent, so that the high pressure can be released when the air permeable membrane fails. The high pressure can also be released by breaking the air permeable membrane even when both the air permeable membrane and the plug body fail, thereby avoiding accidents of scalding caused by opening the lid and improving the safety of product use.

[0009] Furthermore, the plug body is in contact with the inner cover via a first sealing ring, thereby improving the tight coverage of the plug body on the air leakage port under normal use, allowing water vapor to be discharged through the breathable membrane.

[0010] Furthermore, the periphery of the air-permeable membrane is welded to the plug body. This structure enables the high pressure to rupture the air-permeable membrane through the action of air pressure when the plug body cannot slide.

[0011] Furthermore, the outer cover is provided with a limiting ring, which is located in the accommodating cavity and sleeved with the elastic member. This structure can limit the elastic member and improve the sliding stability of the plug body.

[0012] Furthermore, the inner cover is provided with a guide hole, the axis of which is parallel to the expansion and contraction direction of the elastic member, and the plug body is provided with a guide column which is slidably inserted into the guide hole. In the structure of a traditional kettle, the plug body usually slides in a conical slide groove. When the plug body is pushed open, the diameter of the slide groove is larger than the plug body, so that the plug body has a larger space for movement. When the air pressure is unstable, the plug body is prone to deflection and may get stuck when resetting. This structure solves the problem of the plug body getting stuck and unable to be reset due to the plug body flipping when sliding when the air permeable membrane fails in the traditional kettle structure, thereby ensuring the stability of the plug body sliding.

[0013] Furthermore, the air leakage port is arranged around the guide hole, thereby making the structure more compact and reducing the cost.

[0014] Furthermore, the inner cover is also provided with a retaining ring, which is located in the accommodating cavity, and its suspended end is in contact with the outer cover, thereby dividing the accommodating cavity into a ventilation area and a non-ventilation area that are not connected to each other, the pressure relief assembly is located in the ventilation area, a ventilation gap is left between the outer periphery of the plug body and the retaining ring, and the exhaust port is connected to the ventilation area. This structure can reasonably arrange the accommodating cavity, speed up the discharge of air pressure from the cup cover, and avoid pressure accumulation in the cup cover.

[0015] Furthermore, a first sealing convex ring is provided at the top of the enclosure ring, and the first sealing convex ring is in close contact with the outer cover; the outer cover is provided with a second sealing convex ring, and the second sealing convex ring extends toward the inner cover and is in close contact with the inner cover, and the first sealing convex ring is located in the enclosed area of ​​the second sealing convex ring. This structure improves the sealing performance of the cup cover, prevents water vapor from leaking along the gap between the outer cover and the inner cover, and improves safety.

[0016] Furthermore, the outer cover includes a top face portion and an outer portion surrounding the outer periphery of the top face portion, the outer portion is connected to the inner cover, the top face portion includes an arc surface recessed from the outer periphery to the center and a plane located in the middle, and the second sealing convex ring is located on the plane. This structure improves the aesthetics of the outer cover and enables the sealing convex ring to abut tightly.

[0017] Furthermore, the inner cover is also embedded with a second sealing ring for sealing against the cup body. This structure seals the connection between the cup body and the cup cover to prevent water vapor leakage.

[0018] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the water-boiling cup cover of the utility model;

[0020] Figure 2 This is a cross-sectional view of the water-boiling cup cover of the utility model;

[0021] Figure 3 for Figure 2 A partial enlarged view of the middle A area;

[0022] Figure 4 is a structural diagram of the outer cover;

[0023] Figure 5 This is a structural diagram of the inner cover;

[0024] Figure 6 is the structural diagram of the plug body;

[0025] Explanation of the reference numerals: 1. Outer cover; 11. Exhaust port; 12. Top portion; 121. Arc surface; 122. Plane; 13. Peripheral portion; 14. Second sealing convex ring; 15. Limiting ring; 2. Inner cover; 21. Air vent; 22. Retaining ring; 23. First sealing convex ring; 24. Second sealing ring; 25. Guide hole; 31. Ventilation area; 32. Non-ventilation area; 4. Plug body; 41. First sealing ring; 42. Mounting groove; 43. Ventilation port; 44. Guide column; 5. Elastic member; 6. Breathable membrane; 7. Ventilation gap. DETAILED DESCRIPTION

[0026] See also Figure 1-6 , Figure 1 This is an exploded view of the water-boiling cup cover of the utility model; Figure 2 This is a cross-sectional view of the water-boiling cup cover of the utility model; Figure 3 for Figure 2 A partial enlarged view of the middle A area; Figure 4 is a structural diagram of the outer cover; Figure 5 This is a structural diagram of the inner cover; Figure 6 This is a structural diagram of the plug body.

[0027] The utility model discloses a pressure-relieving cup cover for a water-boiling cup, comprising an outer cover 1, an inner cover 2 and a pressure-relieving assembly. The outer cover 1 is provided with an exhaust port 11, the inner cover 2 is connected to the outer cover 1, and surrounds and forms a receiving cavity connected to the exhaust port 11, the inner cover 2 is provided with an exhaust port 21 connected to the receiving cavity, and the pressure-relieving assembly is arranged in the receiving cavity, so that the gas inside the cup body can be discharged through the exhaust port 11. The cup cover is connected to the cup body through the inner cover 2.

[0028] The outer cover 1 includes a top surface 12 and a peripheral portion 13 arranged around the outer periphery of the top surface 12. The top surface 12 is provided with the air release port 21. The peripheral portion 13 is connected to the inner cover 2, for example, by screwing or snapping. The top surface 12 includes an arc surface 121 that is concave from the periphery to the center and a plane 122 located in the middle, thereby improving the aesthetics of the cup cover and making the top surface 12 have a certain degree of elasticity. The outer cover 1 is provided with a limiting ring 15, and the limiting ring 15 is located in the accommodating cavity.

[0029] The inner cover 2 is provided with a retaining ring 22, and the retaining ring 22 is located in the accommodating cavity, and a first sealing convex ring 23 is provided at its suspended end (i.e., the top end), and the first sealing convex ring 23 is in close contact with the outer cover 1, thereby dividing the accommodating cavity into a ventilation area 31 and a non-ventilation area 32 that are not connected to each other. The exhaust port 11 and the air leakage port 21 both correspond to the ventilation area 31. During normal use, the bottom surface of the plug body 4 is in contact with the inner cover 2, and the gas in the cup body enters the ventilation area 31 through the air leakage port 21, the air permeable port 43 and the air permeable membrane 6 in turn, and flows to the exhaust port 11.

[0030] Since the ventilation area 31 must have a certain degree of sealing to prevent moisture from diffusing to other areas, the outer cover 1 is provided with a second sealing convex ring 14. The second sealing convex ring 14 is located on the plane 122 and extends toward the inner cover 2, so as to be closely abutted against the inner cover 2, thereby further ensuring the airtightness of the non-ventilation area 32 and preventing air leakage. The first sealing convex ring 23 is located in the enclosed area of ​​the second sealing convex ring 14, that is, the ventilation area 31 is surrounded by the non-ventilation area 32, and they can be coaxially arranged or eccentrically arranged.

[0031] The inner cover 2 is also embedded with a second sealing ring 24 for sealing against the cup body.

[0032] The pressure relief assembly is located in the ventilation area 31, and includes a plug body 4, an elastic member 5 and a breathable membrane 6. A certain ventilation gap 7 is left between the outer periphery of the plug body 4 and the retaining ring 22. The plug body 4 covers the air release port 21, and its bottom is in contact with the inner cover 2 through a first sealing ring 41. In order to position the first sealing ring 41, an installation groove 42 is provided on the bottom surface of the plug body 4, and the first sealing ring 41 is embedded in the installation groove 42. The elastic member 5 is compressed to press the plug body 4 toward the inner cover 2 to ensure that the plug body 4 is in contact with the inner cover 2. The elastic member 5 can be a structure such as a spring, one end of which is sleeved on the limiting ring 15 to fix the spring, and the other end of which is in contact with the plug body 4.

[0033] The plug body 4 is also provided with a vent 43 communicating with the vent 21. The vent membrane 6 covers the vent 43 and is connected to the plug body 4. Specifically, the periphery of the vent membrane 6 is welded to the plug body 4. The vent membrane 6 is located on a side of the plug body 4 away from the vent 21.

[0034] In order to guide and limit the movement of the plug body 4, the inner cover 2 is provided with a guide hole 25, the axis of which is parallel to the expansion and contraction direction of the elastic member 5, and the plug body 4 is provided with a guide column 44 which is slidably inserted into the guide hole 25. At this time, the air leakage port 21 is arranged around the guide hole 25, so that the plug body 4 can close the air leakage port 21.

[0035] When the breathable membrane fails (i.e. the air flow cannot pass through the breathable membrane), the air pressure in the cup body will generate a thrust on the plug body as a whole, causing the plug body to overcome the elastic force of the elastic part and move upward and break away from the abutment with the inner cover. At this time, the ventilation gap connects the air leakage port and the exhaust port, so the gas in the cup body can flow to the outside of the water boiling cup through the air leakage port, the gap between the bottom surface of the plug body and the inner cover, the ventilation gap and the exhaust port in sequence.

[0036] When both the plug and the breathable membrane fail (i.e. the air pressure in the cup increases to a certain safety threshold, but the plug still cannot be lifted up), the air pressure will act on the breathable membrane, causing the middle of the breathable membrane to bulge upward until it ruptures. Therefore, the gas in the cup can flow to the outside of the water-boiling cup through the vent, the breathable port, the ruptured breathable membrane and the exhaust port in sequence. Since the exhaust port is usually small, most of the splashes generated during the rupture process will be blocked by the outer cover, and no scalding will occur.

[0037] The utility model discloses a pressure-releasing cup cover for a water-boiling cup. The high pressure inside the cup body can be released by pushing the plug body to open the air release port, so that the high pressure can be released when the air permeable membrane fails. The high pressure can also be released when both the air permeable membrane and the plug body fail by breaking the air permeable membrane. This avoids the accident of scalding when opening the cover, and improves the safety of the product. At the same time, the plug body structure is improved so that it can slide back and forth stably, which ensures safety and prolongs the service life of the cup cover.

[0038] It should be understood that, in the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, that is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0039] It should be noted that, in the description of this application, unless otherwise clearly specified and limited, the terms "disposed", "connected", "connected", and "hollow" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A pressure-releasing water-boiling cup cover, characterized in that: include: An outer cover, wherein an exhaust port is provided on the outer cover; An inner cover, the inner cover is connected to the outer cover and surrounds a receiving cavity communicated with the exhaust port, and the inner cover is provided with an air release port communicated with the receiving cavity; The pressure relief assembly includes a plug body, an elastic member and a breathable membrane. The elastic member presses the plug body toward the inner cover so that the plug body covers the air relief port. The plug body is also provided with an air vent connected to the air relief port. The air vent membrane covers the air vent and is connected to the plug body. The air vent membrane is located on a side of the plug body away from the air relief port.

2. A pressure-releasing water-boiling cup cover according to claim 1, characterized in that: The plug body is in contact with the inner cover via a first sealing ring.

3. The pressure-releasing water-boiling cup cover according to claim 1, characterized in that: The periphery of the air-permeable membrane is welded to the plug body.

4. The pressure-releasing water-boiling cup cover according to claim 1, characterized in that: The outer cover is provided with a limiting ring, and the limiting ring is located in the accommodating cavity and sleeved with the elastic member.

5. A pressure-releasing water-boiling cup cover according to claim 4, characterized in that: The inner cover is provided with a guide hole, the axis of which is parallel to the expansion and contraction direction of the elastic member, and the plug body is provided with a guide column which is slidably arranged in the guide hole.

6. The pressure-releasing water-boiling cup cover according to claim 5, characterized in that: The air leakage port is arranged around the guide hole.

7. The pressure-releasing water-boiling cup cover according to claim 6, characterized in that: The inner cover is also provided with a retaining ring, which is located in the accommodating cavity, and its suspended end abuts against the outer cover, thereby dividing the accommodating cavity into a ventilation area and a non-ventilation area that are not connected to each other. The pressure relief assembly is located in the ventilation area, and a ventilation gap is left between the outer periphery of the plug body and the retaining ring, and the exhaust port is connected to the ventilation area.

8. The pressure-releasing water-boiling cup cover according to claim 7, characterized in that: A first sealing convex ring is arranged at the top of the retaining ring, and the first sealing convex ring is tightly abutted against the outer cover; the outer cover is provided with a second sealing convex ring, and the second sealing convex ring extends toward the inner cover and is tightly abutted against the inner cover, and the first sealing convex ring is located in the encirclement area of ​​the second sealing convex ring.

9. The pressure-releasing water-boiling cup cover according to claim 8, characterized in that: The outer cover includes a top surface portion and an outer portion surrounding the outer periphery of the top surface portion, the outer portion is connected to the inner cover, the top surface portion includes an arc surface recessed from the outer periphery to the center and a plane located in the middle, and the second sealing convex ring is located on the plane.

10. The pressure-releasing water-boiling cup cover according to claim 1, characterized in that: The inner cover is also embedded with a second sealing ring for sealing against the cup body.

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