A movable sealing structure of a cup cover of a vacuum cup

Abstract

The utility model discloses a movable sealing structure of thermos cup cover, the thermos cup cover includes the cup cover round board, the cup cover round board has the cup cover outer surface and the cup cover inner surface, is equipped with the drinking water mouth on the cup cover round board and passes through, the movable sealing structure includes: the rotary cover, the first magnet, the sealing cover, the second magnet, the limit structure, the silica gel sealing piece, the top block and the bottom groove on the cup cover inner surface, when sealing cover cooperation silica gel seal cover and silica gel sealing ring strip close drinking water mouth, silica gel sealing ring strip and the cup cover inner surface interference deformation and the cup cover inner surface close to when this time, the hot water in the thermos cup produces the hot gas or the carbon dioxide gas that carbonated beverage produces, and the pressure is produced in the thermos cup, and simultaneously because the opening is formed between silica gel sealing ring strip and silica gel seal cover outer surface, makes the air pressure that hot gas or carbon dioxide produces better to silica gel sealing ring strip extrusion, makes silica gel sealing ring strip and the cup cover inner surface adhere more tightly, and the sealing property is better.

Description

Technical Field

[0001] This utility model relates to the field of cup lid technology, and in particular to a movable sealing structure for a thermos cup lid. Background Technology

[0002] Currently, the body and lid of most insulated cups on the market are usually connected by threads. In order to avoid the trouble of frequently rotating the lid when drinking water, a drinking spout is set on the lid, and a sealing plate is set on the top surface of the lid to control the opening and closing of the drinking spout. Common sealing plate designs include flip-top, rotating, and lever-type, with a wide variety of designs.

[0003] For example, a Chinese utility model patent published on November 26, 2024, with publication number CN222055126U, describes an easy-to-disassemble magnetic cup lid. The lid body is equipped with a drinking spout and a vent, and the drinking spout and vent are sealed with silicone seals on the rotating lid. The drinking spout and vent can be closed or opened by rotating the lid clockwise or counterclockwise to the first or second position, making drinking water very convenient. The second position is set as two and symmetrically arranged on both sides of the first position, so users can open the lid to drink water by rotating it clockwise or counterclockwise according to their usage habits.

[0004] However, this cup lid has some problems during use. Because the lid seals the drinking spout from the top, when the thermos contains hot water or carbonated beverages, the hot water generates steam, creating a lot of pressure inside the thermos. Carbonated beverages, when shaken inside the thermos (such as when placed in a backpack), produce a lot of carbon dioxide gas, which also creates a lot of pressure inside the thermos. These pressures can push the rotating lid up, causing the drinking spout to not seal properly and resulting in leakage. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, this utility model provides a movable sealing structure for the lid of a thermos cup, which solves the problem that the existing lids use the top surface of the lid to seal the drinking spout. When the thermos cup is filled with hot water or some carbonated beverages, a large amount of air pressure is generated. This air pressure will push the rotating lid up, resulting in the drinking spout not being sealed well and causing leakage.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a movable sealing structure for a thermos cup lid, the thermos cup lid including a cup lid circular plate, the cup lid circular plate having an outer surface and an inner surface, and a drinking spout penetrating through the cup lid circular plate, the movable sealing structure including: A rotating lid, which is rotatably mounted on the outer surface of the cup lid; The first magnet is disposed inside the rotating cover; A sealing cap, wherein the sealing cap is located below the inner surface of the cup lid; The second magnet is located inside the sealed cover, and the second magnet and the first magnet are magnetically attracted to each other; A limiting structure is provided to enable the sealing cover and the rotating cover to rotate synchronously. A silicone sealant, comprising a silicone sealing sleeve fitted on the outer edge of a sealing cap and a silicone sealing ring strip integrally formed on the top surface of the silicone sealing sleeve and extending outward from the outer periphery of the silicone sealing sleeve, wherein an opening is formed between the silicone sealing ring strip and the outer surface of the silicone sealing sleeve, and the angle between the silicone sealing ring strip and the inner surface of the cup cap when the silicone sealing ring strip is not deformed is an acute angle. The sealing cover has at least one top block. The inner surface of the cup cover has at least two bottom grooves that fit the top block along its center point circumference. The height of the top block is greater than the vertical height from the highest point to the lowest point of the silicone sealing ring strip in the tilted state without deformation. When the top block is located in the bottom groove, the silicone sealing ring strip interferes and deforms to fit tightly against the inner surface of the cup cover.

[0007] Preferably, when the silicone sealing ring is not deformed, the included angle between the silicone sealing ring and the horizontal top surface of the silicone sealing sleeve is 15°-45°, and the thickness of the silicone sealing ring is 0.4mm-0.6mm.

[0008] Preferably, the cup lid circular plate has a through hole at its center, the limiting structure includes a positioning block and a positioning groove, the sealing cover includes a cover plate, the cover plate has a mounting surface, the mounting surface is provided with a positioning element, the positioning element is provided with at least one positioning groove, the rotating cover is provided with at least one positioning block, the positioning block and the positioning element are both located in the through hole, the positioning block is located in the positioning groove and is adapted to its size.

[0009] Preferably, the through hole is shaped like a concave platform and has a supporting step surface. The positioning element includes a plurality of arc-shaped blocks arranged in a circle. A positioning groove is formed between at least two of the arc-shaped blocks. At least one of the arc-shaped blocks has a hook extending outward from its outer edge. When all the positioning elements are in the through hole, the hook is located on the supporting step surface of the through hole.

[0010] Preferably, the mounting surface is provided with two top blocks, and the inner surface of the cup lid is provided with four bottom grooves that fit the top blocks along the circumference of its center point. A guide structure is provided between the top blocks and the bottom grooves.

[0011] Preferably, the thermos cup lid further includes an annular plate disposed on the outer wall of the cup lid circular plate, the rotating lid includes a rotating plate and a first cover plate, the two ends of the rotating plate abut against the annular plate, the first magnet is located between the rotating plate and the first cover plate, and two positioning blocks are symmetrically disposed on the outer surface of the first cover plate.

[0012] Preferably, the sealing cover further includes a second cover plate, and the second magnet is located between the second cover plate and the cover plate.

[0013] Preferably, an air inlet is provided through the circular plate of the cup lid, and air inlet guide grooves are provided on both sides directly opposite the outer surface of the rotating plate and the cup lid. When the sealing cover, together with the silicone sealing sleeve and the silicone sealing ring, seals the drinking spout, it also seals the air inlet. When the air inlet guide groove is connected to the air inlet, the drinking spout is not sealed, and the silicone seal does not seal the air inlet.

[0014] Preferably, the connection between the inner wall of the ring plate and the outer surface of the cup lid is a concave arc surface, and the outer surface of the cup lid and the inner wall of the ring plate are provided with a continuous recessed groove that communicates with the drinking spout, and the inner wall of the continuous recessed groove is inclined towards the drinking spout.

[0015] Preferably, when the sealing cap is positioned directly below the drinking spout, the rotating cap closes the drinking spout.

[0016] Compared with the prior art, the beneficial effects that this utility model can achieve are: (1) By rotating the rotating lid, the sealing lid rotates synchronously under the action of the limiting structure. When the sealing lid, together with the silicone sealing sleeve and the silicone sealing ring strip, seals the drinking spout, the silicone sealing ring strip interferes with the inner surface of the cup lid and is tightly attached to the inner surface of the cup lid. When the hot air generated by the hot water in the thermos or the carbon dioxide gas generated by the carbonated beverage generates pressure in the thermos, the pressure will squeeze the silicone seal and the sealing lid, so that it can better seal the drinking spout. At the same time, since an opening is formed between the silicone sealing ring strip and the outer surface of the silicone sealing sleeve, the gas pressure generated by the hot air or carbon dioxide can better squeeze the silicone sealing ring strip, so that the silicone sealing ring strip is more tightly attached to the inner surface of the cup lid, further preventing water vapor from being discharged from the drinking spout through the contact surface of the silicone seal and the inner surface of the cup lid, thus lifting the rotating lid and causing leakage. The sealing performance is better. (2) By setting the top block and bottom groove, when the rotating lid is opened or closed, the top block is disengaged from the bottom groove, so that the silicone sealing ring strip will not contact the inner surface of the lid. At this time, the silicone sealing ring strip is in an inclined and undeformed state. The silicone sealing ring strip is separated from the inner surface of the lid and does not contact it. On the one hand, it avoids the silicone sealing ring strip from contacting the inner surface of the lid during the rotation of the rotating lid, the sealing lid and the silicone sealing parts, causing part of the silicone sealing ring strip to turn inward. This prevents the water vapor in the thermos from being unable to press the silicone sealing ring strip completely and adhere it to the inner surface of the lid, thus failing to form a good seal. It also prevents water vapor from easily flowing through the inner surface of the lid and the silicone sealing ring strip to the drinking mouth and eventually lifting the rotating lid, resulting in water leakage. On the other hand, it avoids the friction between the silicone sealing ring strip and the inner surface of the lid from affecting the feel of opening and rotating the lid and causing friction damage, which reduces its sealing performance over time. Attached Figure Description

[0017] Figure 1 A schematic diagram of the thermos cup lid and rotating lid structure with the drinking spout in a closed state; Figure 2 This utility model Figure 1 Structural diagram viewed from below; Figure 3 This utility model Figure 1 Cross-sectional structural diagram; Figure 4 The rotating cover of this utility model is from Figure 1 A schematic diagram of the thermos cup lid and rotating lid after rotating 45°. Figure 5 This utility model Figure 4 Structural diagram viewed from below; Figure 6 This utility model Figure 4 Cross-sectional structural diagram; Figure 7 With the drinking spout of this utility model in the open position, the rotating cap rotates from... Figure 1 A schematic diagram of the state structure of the thermos cup lid and rotating lid after rotating 90°; Figure 8 This utility model Figure 7 Structural diagram viewed from below; Figure 9 This is an exploded structural diagram of the rotating cover, first magnet, sealing cover, second magnet, and silicone sealant of this utility model. Figure 10 This is a schematic cross-sectional view of the undeformed silicone sealant of this utility model. Figure 11 This is a schematic diagram of the cover plate, positioning element, hook, top block, and positioning groove of this utility model; Figure 12 This is a schematic diagram of the structure of the thermos cup lid, drinking spout, bottom groove, through hole and air inlet of this utility model; The components include: 1. Thermos cup lid; 11. Outer surface of the lid; 12. Ring plate; 13. Inner surface of the lid; 101. Drinking spout; 102. Bottom groove; 103. Through hole; 104. Air inlet; 105. Continuous recessed groove; 2. Rotating lid; 21. Rotating plate; 211. Air inlet guide groove; 22. First cover plate; 221. Positioning block; 3. First magnet; 4. Sealing cover; 41. Cover plate; 411. Mounting surface; 42. Second cover plate; 43. Positioning component; 431. Hook; 44. Top block; 45. Positioning groove; 5. Second magnet; 6. Silicone seal; 61. Silicone sealing sleeve; 62. Silicone sealing ring strip; 63. Opening. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this utility model.

[0019] like Figures 1-9 As shown, this utility model provides a movable sealing structure for a thermos cup lid. The thermos cup lid 1 includes a lid round plate, which has an outer surface 11 and an inner surface 13. The bottom surface of the lid round plate is provided with a threaded ring cylinder for easy screwing and fixing with the corresponding thermos cup body. A drinking spout 101 is provided through the lid round plate. The movable sealing structure includes a rotating cover 2, a first magnet 3, a sealing cover 4, a top block 44, a second magnet 5, a limiting structure, and a silicone sealing element 6. The rotating lid 2 is rotatably mounted on the outer surface 11 of the cup lid; The first magnet 3 is located inside the rotating cover 2; The sealing cap 4 is located below the inner surface 13 of the cup lid; The second magnet 5 is located inside the sealing cover 4, and the second magnet 5 and the first magnet 3 are magnetically attracted to each other. The limiting structure is used to make the sealing cover 4 and the rotating cover 2 rotate synchronously; The silicone seal 6 includes a silicone sealing sleeve 61 fitted on the outer edge of the sealing cover 4 and a silicone sealing ring strip 62 integrally formed on the top surface of the silicone sealing sleeve 61 and extending to the outer periphery of the silicone sealing sleeve 61. An opening 63 is formed between the silicone sealing ring strip 62 and the outer surface of the silicone sealing sleeve 61. When the silicone sealing ring strip 62 is not deformed, the included angle between it and the inner surface 13 of the cup cover is an acute angle. The sealing cap 4 is provided with at least one top block 44, and the inner surface 13 of the cup cap is provided with at least two bottom grooves 102 that are adapted to the top block 44 along the circumference of its center point. The height of the top block 44 is greater than the vertical height from the highest point to the lowest point of the silicone sealing ring strip 62 in the tilted state without deformation. When the top block 44 is located in the bottom groove 102, the silicone sealing ring strip 62 interferes and deforms to fit tightly against the inner surface 13 of the cup cap. By placing the rotating cap 2 on the outer surface 11 of the cup lid and the sealing cap 4 on the inner surface 13 of the cup lid, the rotating cap 2 and the sealing cap 4 are fixed to the cup lid round plate by the first magnet 3 and the second magnet 5, thus completing the assembly of the rotating cap 2, the sealing cap 4 and the cup lid round plate. After the thermos lid 1 is screwed onto the thermos body, when drinking is not required, rotating the rotating lid 2 causes the sealing lid 4 to rotate synchronously under the action of the limiting structure. When the sealing lid 4, in conjunction with the silicone sealing sleeve 61 and the silicone sealing ring strip 62, seals the drinking spout 101 (as shown in the image),... Figure 2 and Figure 3As shown), at this time, the silicone sealing ring 62 interferes with the inner surface 13 of the cup lid and deforms to fit tightly against the inner surface 13 of the cup lid. When the hot water in the thermos generates heat or the carbon dioxide gas generated by the carbonated beverage generates pressure in the thermos, the pressure will squeeze the silicone seal 6 and the sealing cap 4, making them better seal the drinking spout 101. At the same time, since the opening 63 is formed between the silicone sealing ring 62 and the outer surface of the silicone sealing sleeve 61, the gas pressure generated by the hot air or carbon dioxide will squeeze the silicone sealing ring 62 better, making the silicone sealing ring 62 fit more tightly against the inner surface 13 of the cup lid, further preventing water vapor from being discharged from the drinking spout 101 through the contact surface between the silicone seal 6 and the inner surface 13 of the cup lid, thus lifting the rotating cap 2 and causing leakage. The sealing performance is better. Through the arrangement of the top block 44 and the bottom groove 102, when the rotating cover 2 is rotated during the process of opening or closing the drinking spout 101 (such as... Figure 4 and Figure 5 The drinking spout 101 is shown in its state when the lid 2 is rotated 45° from the closed state. After the top block 44 disengages from the bottom groove 102, the silicone sealing ring strip 62 will not contact the inner surface 13 of the cup lid (as shown). Figure 6 As shown in the diagram, at this time, the silicone sealing ring 62 is in an inclined, undeformed state, and the silicone sealing ring 62 is separated from the inner surface 13 of the lid and does not contact it. On the one hand, this prevents the silicone sealing ring 62 from contacting the inner surface 13 of the lid during the rotation of the rotating lid 2, the sealing lid 4, and the silicone seal 6, causing part of the silicone sealing ring 62 to turn inward. This prevents the water vapor in the thermos from being unable to completely press the silicone sealing ring 62 against the inner surface 13 of the lid, thus failing to form a good seal. This also prevents water vapor from easily flowing through the space between the inner surface 13 of the lid and the silicone sealing ring 62 to the drinking spout 101, eventually pushing up the rotating lid 2 and causing water leakage. On the other hand, this also prevents the friction between the silicone sealing ring 62 and the inner surface 13 of the lid from affecting the feel of opening and rotating the lid and causing friction damage, which would reduce its sealing performance over time.

[0020] like Figure 10 As shown, the edges of the top surface of the silicone sealing sleeve 61 can be rounded to make the opening 63 larger. In addition, when the silicone sealing ring 62 deforms and fits against the inner surface 13 of the cup lid, there is still an opening 63 between the silicone sealing ring 62 and the silicone sealing sleeve 61, so that the air pressure generated by hot air or carbon dioxide can better squeeze the silicone sealing ring 62, resulting in better sealing.

[0021] like Figure 10 As shown, when the silicone sealing ring 62 is not deformed, the angle between the silicone sealing ring 62 and the horizontal top surface of the silicone sealing sleeve 61 is 15°-45°, and the thickness of the silicone sealing ring 62 is 0.4mm-0.6mm. When the angle between the silicone sealing ring 62 and the horizontal top surface of the silicone sealing sleeve 61 is greater than 45° or the thickness of the silicone sealing ring 62 is less than 0.4mm, the pressure may cause part of the silicone sealing ring 62 to bend inward and turn over, making it unable to fit the inner surface 13 of the cup lid, thus failing to seal well and easily causing water leakage. When the angle between the silicone sealing ring 62 and the horizontal top surface of the silicone sealing sleeve 61 is less than 15°, less water vapor enters the opening 63, resulting in less pressure that compresses the silicone sealing ring 62 against the inner surface 13 of the cup lid. Water vapor can easily seep between the silicone sealing ring 62 and the inner surface 13 of the cup lid, making it difficult to seal properly. Water vapor can easily flow through the gap between the two to the drinking spout 101, eventually lifting the rotating lid 2 and causing water leakage. When the thickness of the silicone sealing ring 62 is greater than 0.6mm, the deformation of the silicone sealing ring 62 will be smaller. The pressure generated by the water vapor may not be able to make the silicone sealing ring 62 stick tightly to the inner surface 13 of the cup lid. Water vapor can easily seep into the space between the silicone sealing ring 62 and the inner surface 13 of the cup lid, and eventually be discharged from the drinking spout 101, causing water leakage.

[0022] like Figure 6 , Figure 9 , Figure 11 and Figure 12 As shown, a through hole 103 is provided at the center of the cup lid circular plate. The limiting structure includes a positioning block 221 and a positioning groove 45. The sealing cover 4 includes a cover plate 41 and a positioning element 43 (such as...) provided on the cover plate 41. Figure 11 As shown, the surface of the cover plate 41 facing the inner surface 13 of the cup lid is designated as the mounting surface 411, and the positioning element 43 is provided on the mounting surface 411. The positioning element 43 is provided with at least one positioning groove 45, and the rotating cover 2 is provided with at least one positioning block 221. The positioning block 221 and the positioning element 43 are both located in the through hole 103. The positioning block 221 is located in the positioning groove 45 and is adapted to its size. When the rotating cover 2 and the sealing cover 4 are assembled on the cup lid round plate by means of the positioning block 221 and the positioning groove 45, after the rotating cover 2 and the sealing cover 4 are fixed by the first magnet 3 and the second magnet 5, the positioning block 221 is located in the positioning groove 45 through the through hole 103, thereby ensuring that the sealing cover 4 can rotate synchronously with the rotating cover 2 during the rotation process.

[0023] like Figure 3 , Figure 6 , Figure 11 and Figure 12As shown, the through hole 103 is shaped like a concave platform and has a supporting step surface. The positioning member 43 includes several arc-shaped blocks arranged in a circle. The arc-shaped blocks have a certain elasticity, which facilitates assembly and disassembly. A positioning groove 45 is formed between at least two arc-shaped blocks. At least one arc-shaped block has a hook 431 extending outward from its outer edge. When all positioning members 43 are inside the through hole 103, the hook 431 is located on the supporting step surface of the through hole 103. With this setup, even when the rotating cover 2 and sealing cover 4 are removed for cleaning, the hook 431 will hook onto the support step surface. After the rotating cover 2 is removed, the silicone seal 6 and sealing cover 4 will not fall off and be damaged because the first magnet 3 and the second magnet 5 will no longer attract and fix them.

[0024] like Figure 9 , Figure 11 and Figure 12 As shown, two top blocks 44 are provided on the mounting surface 411 of the cover plate 41, and four bottom grooves 102 that fit the top blocks 44 are provided equidistantly along the circumference of the inner surface 13 of the cup lid. A guide structure is provided between the top blocks 44 and the bottom grooves 102 (specifically as shown in the figure). Figure 8 and Figure 9 As shown, both the top block 44 and the bottom groove 102 are provided with arc-shaped guide surfaces, which facilitates the entry of the top block 44 into the bottom groove 102 when the rotating cover 2 is rotated. The arc-shaped guide surfaces are a design relative to existing designs and will not be described in detail here. Four bottom grooves 102 and two top blocks 44 symmetrically located on both sides of the positioning member 43 are provided here. When the drinking spout 101 is in a closed state (e.g., Figure 1 and Figure 2 and Figure 3 As shown), the two top blocks 44 are located in the two bottom grooves 102 respectively, and the drinking spout 101 is in the open state (as shown). Figure 7 and Figure 8 As shown), the two top blocks 44 are located in the other two bottom grooves 102 respectively, so that people can open and close them by rotating them in any forward or reverse direction, each rotation being 90 degrees.

[0025] like Figure 3 , Figure 6 and Figure 9 As shown, the thermos cup lid 1 also includes an annular plate 12 disposed on the outer wall of the cup lid circular plate. The rotating lid 2 includes a rotating plate 21 and a first cover plate 22. The two ends of the rotating plate 21 abut against the annular plate 12 to ensure that the rotating plate 21 can only rotate horizontally on the outer surface 11 of the cup lid and cannot move horizontally. The first magnet 3 is located between the rotating plate 21 and the first cover plate 22, thereby facilitating the assembly of the first magnet 3 and the rotating lid 2. Two positioning blocks 221 are symmetrically provided on the outer surface of the first cover plate 22, and there are also two corresponding positioning grooves 45.

[0026] like Figure 3 , Figure 6 and Figure 9 As shown, the sealing cover 4 also includes a second cover plate 42, and the second magnet 5 is located between the second cover plate 42 and the cover plate 41, so as to facilitate the combination of the second magnet 5 and the sealing cover 4. The sealing cover 4 can be formed by combining the second cover plate 42 and the cover plate 41 by means of two-color injection molding (first injection molding the second cover plate 42, then placing the second magnet 5 inside the second cover plate 42, and then injection molding the cover plate 41), etc., which are not limited here.

[0027] like Figure 3 , Figure 8 and Figure 12 As shown, an air inlet 104 is provided through the circular plate of the cup lid. Air inlet guide grooves 211 are provided on both sides opposite to the outer surface 11 of the cup lid and the rotating plate 21. When the sealing cover 4, together with the silicone sealing sleeve 61 and the silicone sealing ring strip 62, seals the drinking spout 101, it also seals the air inlet 104. This ensures that when the drinking spout 101 is sealed, the water in the thermos will not flow out through the air inlet 104. When the air inlet guide groove 211 is connected to the air inlet 104, the drinking spout 101 is not sealed, and the silicone sealing part 6 does not seal the air inlet 104, ensuring that people can drink water more smoothly through the drinking spout 101.

[0028] like Figure 7 As shown, the connection between the inner wall of the ring plate 12 and the outer surface 11 of the cup lid is set as a concave arc surface. The outer surface 11 of the cup lid and the inner wall of the ring plate 12 are provided with a continuous recessed groove 105 that communicates with the drinking spout 101. The inner wall of the continuous recessed groove 105 is inclined towards the drinking spout 101. This setting prevents a small amount of water from remaining on the outer surface 11 of the cup lid after drinking, ensuring that the remaining water can flow back into the thermos.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, when the sealing cap 4 is directly below the drinking spout 101, the rotating cap 2 seals the drinking spout 101 to prevent impurities in the air from contaminating the drinking spout 101.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A movable sealing structure for a thermos cup lid, the thermos cup lid (1) comprising a lid disc, the lid disc having an outer surface (11) and an inner surface (13), and a drinking spout (101) extending through the lid disc, characterized in that: The movable sealing structure includes: Rotating lid (2), which is rotatably mounted on the outer surface (11) of the cup lid; The first magnet (3) is disposed inside the rotating cover (2); A sealing cap (4) is located below the inner surface (13) of the cup lid; The second magnet (5) is located inside the sealing cover (4), and the second magnet (5) and the first magnet (3) are magnetically attracted to each other; A limiting structure is provided to enable the sealing cover (4) and the rotating cover (2) to rotate synchronously. The silicone seal (6) includes a silicone sealing sleeve (61) fitted on the outer edge of the sealing cap (4) and a silicone sealing ring strip (62) integrally formed on the top surface of the silicone sealing sleeve (61) and extending to the outer periphery of the silicone sealing sleeve (61). An opening (63) is formed between the silicone sealing ring strip (62) and the silicone sealing sleeve (61). When the silicone sealing ring strip (62) is not deformed, the angle between it and the inner surface (13) of the cup cap is an acute angle. The sealing cover (4) is provided with at least one top block (44). The inner surface (13) of the cup lid is provided with at least two bottom grooves (102) that are adapted to the top block (44) along its center point circumference. The height of the top block (44) is greater than the vertical height from the highest point to the lowest point of the silicone sealing ring strip (62) in the tilted state without deformation. When the top block (44) is located in the bottom groove (102), the silicone sealing ring strip (62) interferes and deforms and is in close contact with the inner surface (13) of the cup lid.

2. The movable sealing structure of the thermos cup lid according to claim 1, characterized in that: When the silicone sealing ring (62) is not deformed, the angle between the silicone sealing ring (62) and the horizontal top surface of the silicone sealing sleeve (61) is 15°-45°, and the thickness of the silicone sealing ring (62) is 0.4mm-0.6mm.

3. The movable sealing structure of the thermos cup lid according to claim 1, characterized in that: The cup lid circular plate has a through hole (103) at its center. The limiting structure includes a positioning block (221) and a positioning groove (45). The sealing cover (4) includes a cover plate (41). The cover plate (41) has a mounting surface (411). The mounting surface (411) is provided with a positioning element (43). The positioning element (43) is provided with at least one positioning groove (45). The rotating cover (2) is provided with at least one positioning block (221). The positioning block (221) and the positioning element (43) are both located in the through hole (103). The positioning block (221) is located in the positioning groove (45) and is adapted to its size.

4. The movable sealing structure of the thermos cup lid according to claim 3, characterized in that: The through hole (103) is shaped like a concave platform and has a supporting step surface. The positioning member (43) includes a plurality of arc-shaped blocks arranged in a circle. A positioning groove (45) is formed between at least two of the arc-shaped blocks. At least one of the arc-shaped blocks has a hook (431) extending outward from its outer edge. When all the positioning members (43) are in the through hole (103), the hook (431) is located on the supporting step surface of the through hole (103).

5. The movable sealing structure of the thermos cup lid according to claim 4, characterized in that: The mounting surface (411) is provided with two top blocks (44), and the inner surface (13) of the cup lid is provided with four bottom grooves (102) that are adapted to the top blocks (44) along its center point circumference. A guide structure is provided between the top blocks (44) and the bottom grooves (102).

6. The movable sealing structure of the thermos cup lid according to claim 3, characterized in that: The thermos cup lid (1) also includes an annular plate (12) disposed on the outer wall of the cup lid circular plate. The rotating cover (2) includes a rotating plate (21) and a first cover plate (22). The two ends of the rotating plate (21) abut against the annular plate (12). The first magnet (3) is located between the rotating plate (21) and the first cover plate (22). Two positioning blocks (221) are symmetrically provided on the outer surface of the first cover plate (22).

7. The movable sealing structure of the thermos cup lid according to claim 3, characterized in that: The sealing cover (4) also includes a second cover plate (42), and the second magnet (5) is located between the second cover plate (42) and the cover plate (41).

8. The movable sealing structure of the thermos cup lid according to claim 6, characterized in that: An air inlet (104) is provided through the circular plate of the cup lid. An air inlet guide groove (211) is provided on both sides opposite to the outer surface (11) of the cup lid. When the sealing cap (4) seals the drinking mouth (101) with the silicone sealing sleeve (61) and the silicone sealing ring (62), it also seals the air inlet (104). When the air inlet guide groove (211) is connected to the air inlet (104), the drinking mouth (101) is not sealed, and the silicone seal (6) does not seal the air inlet (104).

9. The movable sealing structure of the thermos cup lid according to claim 6, characterized in that: The connection between the inner wall of the ring plate (12) and the outer surface (11) of the cup lid is set as an inwardly concave arc surface. The outer surface (11) of the cup lid and the inner wall of the ring plate (12) are provided with a continuous sinking groove (105) that communicates with the drinking port (101). The inner wall of the continuous sinking groove (105) is inclined towards the drinking port (101).

10. The movable sealing structure of the thermos cup lid according to claim 1, characterized in that: When the sealing cap (4) is directly below the drinking port (101), the rotating cap (2) closes the drinking port (101).

Images