Pressure relief cup lid

Abstract

This utility model discloses a pressure-relieving cup lid, including an outer cup lid, an inner liner, a spring, and a pressure-relieving base. The inner liner is connected to the lower part of the outer cup lid, and a pressure-relieving cavity is provided between the outer cup lid and the inner liner. A pressure-relieving channel communicating with the pressure-relieving cavity is provided at the top of the inner liner. The pressure-relieving base is movably installed at the opening of the pressure-relieving channel. The spring is installed on the pressure-relieving base. A limit rod is provided at the bottom of the outer cup lid, and the spring is sleeved on the limit rod. A flexible lip is provided on the side of the pressure-relieving base, and the lip contacts the side of the pressure-relieving channel. The pressure-relieving cup lid of this utility model has a simple structure, and by setting a pressure-relieving silicone with a lip structure, it can effectively prevent the cup lid from leaking.

Description

Technical Field

[0001] This utility model relates to the field of cup technology, and in particular to a pressure relief cup lid. Background Technology

[0002] Cups are widely used in people's lives, and there are now various types of cups. When the lid closes the cup, internal temperature changes such as hot water cooling, refrigeration heating, or shaking can cause pressure fluctuations, which can easily lead to excessive pressure causing the lid to pop open, liquid splashing, or insufficient sealing causing leakage. Current pressure-relieving cup lids usually use a spring-loaded pressure relief structure, but this structure carries the risk of leakage during pressure relief, resulting in a poor user experience. Utility Model Content

[0003] The purpose of this invention is to provide a pressure relief cup lid to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A pressure-relieving cup lid includes an outer cup lid, an inner liner, a spring, and a pressure-relieving base. The inner liner is connected to the lower part of the outer cup lid, and a pressure-relieving cavity is provided between the outer cup lid and the inner liner. A pressure-relieving channel communicating with the pressure-relieving cavity is provided at the top of the inner liner. The pressure-relieving base is movably installed at the opening of the pressure-relieving channel. The spring is installed on the pressure-relieving base. A limit rod is provided at the bottom of the outer cup lid, and the spring is sleeved on the limit rod. An elastic lip is provided on the side of the pressure-relieving base, and the lip contacts the side wall of the pressure-relieving channel.

[0006] Furthermore, the outer cup lid and the inner liner are fixedly connected by welding or snap fasteners.

[0007] Furthermore, the pressure relief base is provided with a limiting cavity, and the spring is installed in the limiting cavity.

[0008] Furthermore, the lip is provided with 1 to 5 layers, and at least one layer of the lip is in contact with the side wall of the pressure relief channel.

[0009] Furthermore, the pressure relief base is made of silicone.

[0010] Furthermore, the pressure relief chamber is provided with a vent hole, and a vent membrane is provided inside the pressure relief chamber.

[0011] Furthermore, both the outer cup lid and the inner liner are provided with annular side plates around their perimeter, and the annular side plates of the inner liner are provided with external threads.

[0012] Furthermore, a sealing ring is fitted at the bottom end of the annular side plate of the liner.

[0013] Beneficial effects:

[0014] The pressure relief cup lid of this invention has a simple structure. By incorporating a pressure relief silicone with a lip structure, it can effectively prevent water leakage from the cup lid. Attached Figure Description

[0015] Figure 1 This is an exploded view of the present invention;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 This is a bottom view of the present invention;

[0018] Figure 4 This is a cross-sectional view of the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the cup lid in this utility model;

[0020] Figure 6 This is a top view of the lining in this utility model;

[0021] Figure 7 This is a schematic diagram of the pressure relief base in this utility model.

[0022] The following are the labels in the diagram: 1. Outer cup lid; 2. Inner liner; 3. Pressure relief base; 4. Spring; 5. Limiting rod; 6. External thread; 7. Pressure relief chamber; 8. Pressure relief channel; 9. Vent hole; 10. Sealing ring; 11. Vent membrane; 12. Lip. Detailed Implementation

[0023] In the description of this embodiment, it should be noted that the terms "upper," "lower," "inner," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In addition, unless otherwise specified, the components used in the following embodiments are all existing components, and their corresponding connection methods can also be achieved through conventional technical means, which will not be described in detail in this application. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example

[0026] This embodiment provides a pressure relief cup lid, including an outer cup lid 1, an inner liner 2, a spring 4, and a pressure relief base 3. The inner liner 2 is connected to the lower part of the outer cup lid 1, and a pressure relief cavity 7 is provided between the outer cup lid 1 and the inner liner 2. A pressure relief channel 8 communicating with the pressure relief cavity 7 is provided at the top of the inner liner 2. The pressure relief base 3 is movably installed at the opening of the pressure relief channel 8. The spring 4 is installed on the pressure relief base 3. A limit rod 5 is provided at the bottom of the outer cup lid 1, and the spring 4 is sleeved on the limit rod 5. A lip 12 is provided on the side of the pressure relief base 3. The pressure relief base 3 is made of silicone material, so the lip 12 has a certain elasticity, and the lip 12 contacts the side wall of the pressure relief channel 8. Both the outer cup lid 1 and the inner liner 2 are provided with annular side plates around their perimeter, and the annular side plates of the inner liner 2 are provided with external threads 6.

[0027] Specifically, in this embodiment, the pressure relief cup lid includes an outermost outer cup lid 1 and an inner liner 2. The inner liner 2 is fixedly connected to the inside of the outer cup lid 1. Because the diameter of the inner liner 2 is smaller than the diameter of the outer cup lid 1, there is a certain distance between the inner liner 2 and the annular side plate of the outer cup lid 1. The cup body can be connected between the outer cup lid 1 and the inner liner 2 through the external thread 6 on the annular side plate of the inner liner 2, while the annular side plate of the outer cup lid 1 can protect the cup opening. After the inner liner 2 is connected to the bottom of the outer cup lid 1, a pressure relief chamber 7 and a pressure relief channel 8 are provided in the space between the upper surface of the inner liner 2 and the lower surface of the outer cup lid 1. A pressure relief base 3 is installed at the opening of the pressure relief channel 8. The pressure relief base 3 is directly locked at the opening of the pressure relief channel 8 to seal it. A spring 4 is installed above the pressure relief base 3. A limiting rod 5, coaxial with the pressure relief channel 8, is set at the bottom of the outer cup lid 1 at the position corresponding to the pressure relief channel 8. When the inner liner 2 is connected to the outer cup lid 1, the limiting rod 5 is inserted into the spring 4, and the end of the limiting rod 5 is a certain distance away from the bottom of the pressure relief base 3. Thus, when the pressure relief base 3 is pushed upward by air pressure, it can drive the spring 4 to squeeze upward along the limiting rod 5. A lip 12 is provided on the side of the pressure relief base 3, which abuts against the side of the pressure relief channel 8, providing an additional seal to the pressure relief channel 8. Pressure relief can only occur when the pressure relief base 3 is pushed to a certain height by the air pressure in the lower cup, causing the lip 12 to move away from the pressure relief channel 8. In this embodiment, a pressure relief threshold range of 15-55 kPa is set. When the pressure exceeds the limit, the pressure relief base 3 is pushed upward to open the pressure relief channel 8.

[0028] In this embodiment, the outer cup lid 1 and the inner liner 2 are fixedly connected by welding or snap fasteners, which ensures the firmness of the connection between the two and prevents the cup lid from separating due to force during use, thereby ensuring the stability of the entire cup lid structure.

[0029] In this embodiment, a limiting cavity is provided on the pressure relief base 3. The limiting cavity is recessed downward to form a groove, and the diameter of the limiting cavity is adapted to the diameter of the spring 4. The spring 4 is placed in the limiting cavity, and the limiting rod 5 corresponds to the upper part of the spring 4. When there is no air pressure, the limiting rod 5 is inserted into the upper part of the spring 4, while the lower part of the spring 4 is not connected to the limiting rod 5, and the bottom of the spring 4 is in contact with the bottom of the limiting cavity. Thus, when the pressure relief base 3 moves upward, it pushes the spring 4 upward to squeeze, that is, the lower part of the spring 4 is squeezed into the limiting rod 5. After the pressure is released, the spring 4 restores its elasticity and pushes the pressure relief base 3 downward to close the pressure relief channel 8.

[0030] In this embodiment, the lip tongue 12 is provided with 1 to 5 layers, and at least one layer of the lip tongue 12 is in contact with the side wall of the pressure relief channel 8. The distance between the lip tongue 12 and the side edge of the pressure relief channel 8 is -0.1 to 0.3 mm, and the negative gap allows the lip-shaped elastic compression liner 2 to form multiple sealing barriers.

[0031] In this embodiment, the pressure relief chamber 7 is provided with vent holes 9. That is, a number of vent holes 9 are opened on the upper cover of the inner liner 2 and the upper cover of the outer cup cover 1 at the corresponding position of the pressure relief chamber 7. A breathable membrane 11 that is adapted to the size of the pressure relief chamber 7 is placed inside the pressure relief chamber 7. Gas can pass through through the vent holes 9 and the breathable membrane 11, but liquid is blocked from passing through.

[0032] In this embodiment, a sealing ring 10 is fitted at the bottom of the annular side plate of the inner liner 2. The sealing ring 10 is made of silicone material, which can enhance the sealing performance of the pressure relief cup lid after it is connected to the cup body.

[0033] Working principle:

[0034] Under normal conditions, the spring 4 is fitted onto the limiting rod 5 at the bottom of the outer cup lid 1 and applies pre-pressure to the pressure relief base 3, causing the elastic lip 12 on the side of the pressure relief base 3 to come into close contact with the side of the pressure relief channel 8 at the top of the inner liner 2 to form a seal. At the same time, the sealing ring 10 at the bottom of the inner liner 2 ring plate cooperates with the cup body to enhance the overall sealing performance, jointly preventing the leakage of liquid or gas inside the cup. When the pressure inside the cup increases, the pressure acts on the pressure relief base 3. When the pressure exceeds the pre-tightening force of the spring 4, the pressure relief base 3 is pushed upward, causing the lip 12 to separate from the side of the pressure relief channel 8. The gas inside the cup enters the pressure relief chamber 7 between the outer cup lid 1 and the inner liner 2 through the pressure relief channel 8, and then exits through the vent hole 9 of the pressure relief chamber 7 to achieve pressure relief. When the pressure inside the cup drops below the pre-tightening force of the spring 4, the spring 4 pushes the pressure relief base 3 to reset, and the lip 12 comes into close contact with the side of the pressure relief channel 8 again to restore the seal. This cycle achieves the functions of normal sealing and automatic pressure relief in case of overpressure.

[0035] Although the embodiments of this utility model have been described in the specification, these embodiments are merely illustrative and should not be construed as limiting the scope of protection of this utility model. Various omissions, substitutions, and modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A pressure relief cup lid, characterized in that: The device includes an outer cup lid, an inner liner, a spring, and a pressure relief base. The inner liner is connected to the lower part of the outer cup lid, and a pressure relief cavity is provided between the outer cup lid and the inner liner. The top of the inner liner is provided with a pressure relief channel communicating with the pressure relief cavity. The pressure relief base is movably installed at the opening of the pressure relief channel. The spring is installed on the pressure relief base. The bottom of the outer cup lid is provided with a limit rod, and the spring is sleeved on the limit rod. The side of the pressure relief base is provided with an elastic lip, and the lip contacts the side wall of the pressure relief channel.

2. The pressure relief cup lid according to claim 1, characterized in that: The outer cup lid and the inner liner are fixedly connected by welding or snap fasteners.

3. The pressure relief cup lid according to claim 1, characterized in that: The pressure relief base is provided with a limiting cavity, and the spring is installed in the limiting cavity.

4. The pressure relief cup lid according to claim 1, characterized in that: The lip and tongue are provided with 1 to 5 layers, and at least one layer of the lip and tongue is in contact with the side wall of the pressure relief channel.

5. The pressure relief cup lid according to claim 1, characterized in that: The pressure relief base is made of silicone.

6. The pressure relief cup lid according to claim 1, characterized in that: The pressure relief chamber is provided with a vent hole, and a breathable membrane is provided inside the pressure relief chamber.

7. The pressure relief cup lid according to claim 1, characterized in that: Both the outer cup lid and the inner liner are provided with ring side plates around their perimeter, and the ring side plates of the inner liner are provided with external threads.

8. The pressure relief cup lid according to claim 1, characterized in that: A sealing ring is fitted at the bottom end of the annular side plate of the inner lining.

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