A leak-proof cup cover

Abstract

The utility model provides a kind of leakage-proof cup cover, including cover, sealing mechanism and opening and closing mechanism;The cover middle part is equipped with drinking water mouth, the sealing mechanism is set in cover inside and is compatible with drinking water mouth, the opening and closing mechanism is through cover and is transmission connection with sealing mechanism;The sealing mechanism includes silica gel seal ring and support seat, the silica gel seal ring edge is fixedly connected with cover inner wall, the support seat is embedded in silica gel seal ring middle part, the opening and closing mechanism end is detachably connected with support seat.The utility model presser bar, elastic silica gel column and limit block in opening and closing mechanism cooperate with each other, press press cap can drive sealing mechanism to open drinking water mouth, after loosening, elastic silica gel column can quickly drive sealing mechanism to reset, so that silica gel seal ring is tightly attached drinking water mouth and is closed, it is convenient to operate, the setting of limit block can prevent presser bar excessive movement, guarantee the stability of opening and closing process, and long-term use is not prone to sealing problem.

Description

Technical Field

[0001] This utility model mainly relates to the field of cup lid technology, specifically to a leak-proof cup lid. Background Technology

[0002] In daily life, cups are commonly used containers for holding liquids such as water and beverages, and the cup lid, as an important accessory, directly affects the user experience due to its sealing performance. Currently, there are many types of cup lids on the market, but they generally suffer from poor leak-proof performance. Some cup lids have simple sealing designs, relying solely on a single sealing ring to achieve a seal. When the cup is tilted, inverted, or subjected to external impact, liquid can easily leak from the gaps, causing inconvenience in carrying and using. Furthermore, some existing cup lid opening and closing mechanisms are not well-designed, easily leading to incomplete seals during opening and closing. For example, the reset structure of some push-button cup lids has poor stability and is prone to elastic failure after long-term use, causing the sealing mechanism to fail to fit tightly against the drinking spout, further exacerbating the leakage problem. Simultaneously, the connection structure between some cup lids and the cup body is not robust enough, and may loosen during use due to vibration or impact, affecting the overall leak-proof effect. Based on these issues, a leak-proof cup lid is proposed. Utility Model Content

[0003] This utility model provides a leak-proof cup lid to solve the technical problems existing in the background art.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A leak-proof cup lid includes a lid body, a sealing mechanism, and an opening and closing mechanism; the lid body has a drinking spout in the middle, the sealing mechanism is disposed inside the lid body and adapted to the drinking spout, and the opening and closing mechanism passes through the lid body and is drivenly connected to the sealing mechanism; the sealing mechanism includes a silicone sealing ring and a support base, the edge of the silicone sealing ring is fixedly connected to the inner wall of the lid body, the support base is embedded in the middle of the silicone sealing ring, and the end of the opening and closing mechanism is detachably connected to the support base.

[0005] A further improvement is that the opening and closing mechanism includes a pressing rod, an elastic silicone column, and a limiting block; the pressing rod passes through the through hole at the top of the cover, its bottom end is engaged with the support seat, and its top end is provided with a pressing cap; the elastic silicone column is sleeved on the outside of the pressing rod, and its two ends abut against the inner wall of the cover and the support seat respectively; the limiting block is fixed in the middle of the pressing rod and forms a limiting fit with the edge of the through hole at the top of the cover. A further improvement is that the outer wall of the elastic silicone column is provided with axially distributed flow-guiding grooves.

[0006] A further improvement is that the edge of the lid is provided with an annular fastening groove, and the inner sidewall of the fastening groove is provided with at least 3 evenly distributed anti-slip protrusions, which form an interference fit with the edge of the cup mouth.

[0007] A further improvement is that the cross-section of the silicone sealing ring is "T" shaped, with its transverse portion fixed to the inner wall of the cap by heat pressing, and its longitudinal portion forming a tight seal with the inner wall of the drinking spout. A further improvement is that the bottom of the pressing cap is provided with an annular sealing gasket, which fits tightly against the edge of the through hole at the top of the cover when the opening and closing mechanism is in the closed state. A further improvement is that the cover is injection molded from food-grade PP material, and the silicone sealing ring is vulcanized from food-grade silicone. A further improvement is that the depth of the fastening groove is 5-8mm, the height of the anti-slip protrusion is 0.5-1mm, and the surface is provided with an arc-shaped transition surface. Compared with the prior art, the technical solution provided by this utility model has the following advantages: The pressing rod, elastic silicone column, and limiting block in the opening and closing mechanism of this utility model work together. Pressing the pressing cap will drive the sealing mechanism to open the drinking spout. After releasing, the elastic silicone column can quickly drive the sealing mechanism to reset, so that the silicone sealing ring tightly fits the drinking spout to achieve closure. The operation is convenient. The setting of the limiting block can prevent the pressing rod from moving excessively, ensuring the stability of the opening and closing process. Even after long-term use, it is not easy to have a problem of poor sealing caused by elastic failure. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 For the present utility model Figure 1 An explosion diagram; Figure 3 This utility model Figure 1 Another perspective structural diagram.

[0009] Figure label: 1-Lid; 2-Sealing mechanism; 21-Silicone sealing ring; 22-Support base; 3-Opening and closing mechanism; 31-Pressing rod; 32-Elastic silicone column; 33-Limiting block; 34-Pressing cap; 4-Drinking spout; 5-Snap-fit ​​groove; 6-Anti-slip protrusions. Detailed Implementation

[0010] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0011] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0012] It should be noted that the structures not described in this utility model do not involve the design points and improvement directions of this utility model and all adopt existing technology. At the same time, the content in the above background technology is within the technical knowledge scope of the utility model user. Since the technical content in this field is vast and too complex, the above content of this application does not necessarily constitute prior art. In addition, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0013] Reference Figure 1-3 This embodiment provides a leak-proof cup lid, including a lid body 1, a sealing mechanism 2, and an opening and closing mechanism 3; the lid body 1 has a drinking spout 4 in the middle, the sealing mechanism 2 is disposed inside the lid body 1 and adapted to the drinking spout 4, and the opening and closing mechanism 3 passes through the lid body 1 and is connected to the sealing mechanism 2 in a transmission manner; the sealing mechanism 2 includes a silicone sealing ring 21 and a support base 22, the edge of the silicone sealing ring 21 is fixedly connected to the inner wall of the lid body 1, the support base 22 is embedded in the middle of the silicone sealing ring 21, and the end of the opening and closing mechanism 3 is detachably connected to the support base 22.

[0014] The pressing rod 31, elastic silicone column 32, and limiting block 33 in the opening and closing mechanism 3 work together to open the drinking spout 4 by pressing the pressing cap 34. After releasing, the elastic silicone column 32 can quickly drive the sealing mechanism 2 to reset, so that the silicone sealing ring 21 tightly fits the drinking spout 4 to achieve closure. The operation is convenient. The setting of the limiting block 33 can prevent the pressing rod 31 from moving excessively, ensuring the stability of the opening and closing process. Long-term use will not easily cause the problem of poor sealing due to elastic failure.

[0015] In a preferred embodiment, the opening and closing mechanism 3 includes a pressing rod 31, an elastic silicone column 32, and a limiting block 33; the pressing rod 31 passes through the through hole 11 at the top of the cover 1, its bottom end is engaged with the support base 22, and its top end is provided with a pressing cap 34; the elastic silicone column 32 is sleeved on the outside of the pressing rod 31, and its two ends abut against the inner wall of the cover 1 and the support base 22 respectively; the limiting block 33 is fixed in the middle of the pressing rod 31 and forms a limiting fit with the edge of the through hole 11 at the top of the cover 1. In a preferred embodiment, the elastic silicone column 32 is integrally molded from food-grade silicone with a Shore hardness of 60-80, and its outer wall is provided with axially distributed guide grooves.

[0016] In a preferred embodiment, the edge of the cover 1 is provided with an annular fastening groove 5, and the inner sidewall of the fastening groove 5 is provided with at least 3 evenly distributed anti-slip protrusions 6, and the anti-slip protrusions 6 form an interference fit with the edge of the cup mouth.

[0017] Among them, the inner wall of the annular fastening groove 5 on the edge of the lid 1 is provided with at least 3 evenly distributed anti-slip protrusions 6, which form an interference fit with the edge of the cup body and the cup mouth, which can effectively prevent the lid from loosening due to vibration, collision and other reasons during use, ensure the stability of the connection, and further improve the leak-proof effect. In a preferred embodiment, the silicone sealing ring 21 has a "T"-shaped cross-section. Its transverse portion is fixed to the inner wall of the cover 1 by heat pressing, and its longitudinal portion forms a tight seal with the inner wall of the drinking spout 4. Figure 2 As shown, the silicone sealing ring 21 on the bottom surface is in cross-section.

[0018] The silicone sealing ring 21 has a "T" shaped cross section, and the horizontal part is heat-pressed and fixed to the inner wall of the lid 1, which enhances the firmness of the connection between the sealing mechanism 2 and the lid. The annular sealing gasket at the bottom of the pressing cap 34 fits tightly with the edge of the through hole 11 at the top of the lid 1 when closed, which further improves the sealing performance at the opening and closing mechanism 3. The size design of the snap-fit ​​groove 5 and the anti-slip protrusions 6, as well as the setting of the arc transition surface, not only ensure the tightness of the connection, but also facilitate the installation and removal of the cup lid and the cup body.

[0019] This leak-proof cup lid features a sealing mechanism consisting of a silicone sealing ring 21 and a support base 22. The edge of the silicone sealing ring 21 is fixedly connected to the inner wall of the lid body 1, and the longitudinal part is fitted and sealed against the inner side wall of the drinking spout 4, effectively preventing liquid from leaking out of the drinking spout 4. At the same time, the annular fastening groove 5 and anti-slip protrusions 6 on the edge of the lid body 1 form an interference fit with the cup body and the cup mouth, enhancing the sealing performance of the connection between the lid body 1 and the cup body. The double sealing structure greatly improves the leak-proof performance, and even if the cup is tilted or inverted, it is not easy for liquid to leak.

[0020] In a preferred embodiment, the bottom of the pressing cap 34 is provided with an annular sealing gasket 35. When the opening and closing mechanism is in the closed state, the annular sealing gasket 35 is tightly fitted with the edge of the through hole 11 on the top of the cover 1. In a preferred embodiment, the cover 1 is injection molded from food-grade PP material, and the silicone sealing ring 21 is vulcanized from food-grade silicone. Both the cover and the silicone sealing ring meet the safety standards for food contact materials, do not release harmful substances, and ensure the health and safety of users. In a preferred embodiment, the depth of the fastening groove 5 is 5-8mm, the height of the anti-slip protrusion 6 is 0.5-1mm, and the surface is provided with an arc-shaped transition surface. The lid is installed as follows: Sealing mechanism and cover assembly: The transverse part of the silicone sealing ring 21 is fixed to the inner wall of the cover 1 by heat pressing process, ensuring that the longitudinal part is aligned with the inner wall of the drinking port 4 in the middle of the cover 1 to form the initial sealing base. Then, the support 22 is embedded into the reserved groove in the middle of the silicone sealing ring 21, and the two are fixedly connected by the snap-fit ​​structure. Assembly of opening and closing mechanism: The elastic silicone column 32 is sleeved on the outside of the pressing rod 31, so that the top of the elastic silicone column 32 abuts against the bottom surface of the limiting block 33 in the middle of the pressing rod 31. The pressing rod 31 is passed through the through hole 11 at the top of the cover 1, ensuring that the limiting block 33 and the edge of the through hole 11 form a limiting fit, and the bottom end of the elastic silicone column 32 abuts against the protrusion on the inner wall of the cover 1. Finally, the pressing cap 34 is fixed to the top of the pressing rod 31 by threaded connection, and an annular sealing gasket is pasted on the bottom of the pressing cap 34. Overall assembly and fixation: Connect the end of the assembled opening and closing mechanism 3 (i.e. the bottom end of the pressing rod 31) to the support base 22 through the slot structure to ensure that the pressing rod 31 drives the support base 22 to move synchronously. Check the anti-slip protrusions on the inner side wall of the annular fastening groove 5 on the edge of the cover 1 to ensure that the three protrusions are evenly distributed and without deformation. The above structure is reasonable and easy to maintain. The support base 22 in the sealing mechanism 2 is detachably connected to the end of the opening and closing mechanism 3, which facilitates the disassembly and cleaning of each component and avoids bacterial growth. At the same time, the connection method of each component is reasonably designed, making production and assembly convenient and helping to reduce production costs.

[0021] When closed, the elastic silicone column 32 is in a naturally extended state. Its elastic force pushes the support seat 22 to cause the longitudinal part of the silicone sealing ring 21 to fit tightly against the inner wall of the drinking spout 4, forming a primary seal. At the same time, the annular sealing pad at the bottom of the pressing cap 34 fits against the edge of the through hole 11 at the top of the cover 1, forming a secondary seal. The fastening groove 5 at the edge of the cover 1 is interference-fitted with the cup mouth, forming a tertiary seal. When the operation is started, press down on the pressing cap 34. The pressing rod 31 drives the support base 22 to move downward. The longitudinal part of the silicone sealing ring 21 separates from the drinking port 4. The elastic silicone column 32 is compressed and stores elastic potential energy. At this time, the drinking port 4 is opened, and liquid can be drunk through the drinking port 4. The flow guide groove on the outer wall of the elastic silicone column 32 can guide the flow of liquid and avoid residue. Reset and close: Release the pressing cap 34, the elastic silicone column 32 releases potential energy, pushes the support base 22 and pressing rod 31 upward to reset, the longitudinal part of the silicone sealing ring 21 re-attaches to the drinking spout 4, and restores the three-level sealing state. The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A leak-proof cup lid, characterized in that, It includes a cover (1), a sealing mechanism (2), and an opening and closing mechanism (3); the cover (1) has a drinking port (4) in the middle, the sealing mechanism (2) is located inside the cover (1) and is adapted to the drinking port (4), and the opening and closing mechanism (3) passes through the cover (1) and is connected to the sealing mechanism (2) in a transmission manner; the sealing mechanism (2) includes a silicone sealing ring (21) and a support base (22), the edge of the silicone sealing ring (21) is fixedly connected to the inner wall of the cover (1), the support base (22) is embedded in the middle of the silicone sealing ring (21), and the end of the opening and closing mechanism (3) is detachably connected to the support base (22).

2. The leak-proof cup lid according to claim 1, characterized in that, The opening and closing mechanism (3) includes a pressing rod (31), an elastic silicone column (32), and a limiting block (33); the pressing rod (31) passes through the through hole (11) at the top of the cover (1), its bottom end is engaged with the support seat (22), and the top end is provided with a pressing cap (34); the elastic silicone column (32) is sleeved on the outside of the pressing rod (31), and its two ends abut against the inner wall of the cover (1) and the support seat (22) respectively; the limiting block (33) is fixed in the middle of the pressing rod (31), and forms a limiting fit with the edge of the through hole (11) at the top of the cover (1).

3. The leak-proof cup lid according to claim 2, characterized in that, The outer wall of the elastic silicone column (32) is provided with axially distributed flow-guiding grooves.

4. The leak-proof cup lid according to claim 1, characterized in that, The edge of the lid (1) is provided with a fastening groove (5), and the inner side wall of the fastening groove (5) is provided with at least 3 evenly distributed anti-slip protrusions (6), and the anti-slip protrusions (6) form an interference fit with the edge of the cup mouth.

5. The leak-proof cup lid according to claim 1, characterized in that, The cross-section of the silicone sealing ring (21) is "T" shaped. Its horizontal part is fixed to the inner wall of the cover (1) by heat pressing, and its vertical part is sealed to the inner wall of the drinking port (4).

6. The leak-proof cup lid according to claim 2, characterized in that, The bottom of the pressing cap (34) is provided with an annular sealing gasket (35). When the opening and closing mechanism is in the closed state, the annular sealing gasket (35) is tightly fitted with the edge of the through hole (11) at the top of the cover (1).

7. The leak-proof cup lid according to claim 1, characterized in that, The cover (1) is injection molded from food-grade PP material, and the silicone sealing ring (21) is vulcanized from food-grade silicone.

8. The leak-proof cup lid according to claim 4, characterized in that, The depth of the fastening groove (5) is 5-8mm, the height of the anti-slip protrusion (6) is 0.5-1mm, and the surface is provided with an arc-shaped transition surface.

Images