Leakproof vacuum cup

Abstract

The utility model discloses a kind of anti-leakage vacuum cups, including cup body, cup cover, flip cover and sealing buckle, the cup cover is screwed in the cup mouth, the inside below of the cup cover is provided with the sealing washer compatible with the cup mouth, the top of the cup cover is provided with water outlet nozzle, the one side of the cup cover integrally formed has lower seat, the inside of the lower seat is rotatably mounted with limit buckle by pivot, the flip cover is rotatably installed in the top of the cup cover by hinge, the utility model is formed by sealing buckle and limit buckle cooperation elastic clamping structure: when sealing buckle is buckled, by extruding limit buckle to exert pressure on upper seat, make upper seat and lower seat outer wall closely adhere to the arc clamping groove of sealing buckle, avoid clamping loose, this structure has solved the problem of existing buckle " too loose easy to remove, too tight difficult to open", effectively improve the sealing property while having better use experience.

Description

Technical Field

[0001] This utility model belongs to the technical field of bolt processing equipment, specifically relating to a leak-proof thermos cup. Background Technology

[0002] Insulated water bottles, as everyday drinking utensils, are widely used in homes, offices, and outdoors due to their temperature-maintaining function. The structure of a typical insulated water bottle usually includes a body, a lid, and a flip-top. The lid is connected to the body by threads or snaps, and the flip-top is used to seal the spout of the lid, achieving a leak-proof effect.

[0003] However, in actual use, existing thermos cups still have the following technical defects:

[0004] Most thermos flares use a snap fastener to connect the lid to the cup lid, but these snap fasteners are often simple snap-fit ​​designs lacking reinforcement. When the snap fastener wears out over time or is subjected to external pressure, it can easily come loose, causing the lid to open. In addition, the engagement force of existing snap fasteners is difficult to control precisely; a loose engagement can lead to leakage, while a tight engagement makes it difficult for users to open the lid, affecting the user experience.

[0005] Some insulated cups rely solely on a single sealing structure (such as a gasket between the lid and the body, or a sealing ring between the flip-top and the spout) to prevent leakage. When the seal ages, there are assembly errors, or the cup is subjected to external impact, the seal is prone to failure. For example, if the threaded connection between the lid and the body is not tightly screwed on, liquid can easily leak through the thread gaps. Similarly, if the seal between the flip-top and the spout relies on a simple fit, the flip-top can easily loosen during transport, causing the spout seal to fail, especially in bumpy outdoor environments where leakage is more pronounced.

[0006] In summary, existing thermos cups have room for improvement in terms of sealing reliability and locking stability. There is an urgent need to design a leak-proof thermos cup with multi-level sealing and stable locking to solve the above-mentioned technical problems. Utility Model Content

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A leak-proof insulated cup includes a cup body, a cup lid, a flip-top, and a sealing buckle. The cup lid is threaded onto the cup opening. A sealing gasket adapted to the cup opening is provided inside the lower part of the cup lid. A spout is provided through the top of the cup lid. A lower seat is integrally formed on one side of the cup lid. A limit buckle is rotatably installed inside the lower seat via a pivot. The flip-top is rotatably installed on the top of the cup lid via a hinge. When the flip-top is closed, it can close the spout. A spout sleeve is provided on the spout. A sealing ball is fixedly installed inside the flip-top. An upper seat is integrally formed on the side of the flip-top near the lower seat. The sealing buckle is rotatably installed on the outside of the cup lid. The sealing buckle is used to fasten the lower seat and the upper seat.

[0009] Furthermore, when the sealing buckle engages the lower seat and the upper seat, the sealing buckle squeezes the limiting buckle, and the limiting buckle, after being squeezed, applies pressure to the upper seat, causing the upper seat to move away from the lower seat, thereby achieving a tight engagement between the sealing buckle and the lower and upper seats.

[0010] Furthermore, the sealing ball is coaxially arranged with the water outlet, and when the flip cover is closed, the sealing ball is embedded inside the water outlet and forms a seal.

[0011] Furthermore, a return spring is provided between the limiting buckle and the lower seat. When the sealing buckle releases its pressure on the limiting buckle, the return spring drives the limiting buckle to return to its initial position.

[0012] Furthermore, the top of the cup body is provided with a cup opening, and a limiting pad is fixedly installed on the lower outer side of the cup opening.

[0013] Furthermore, the sealing gasket is made of an elastic material, and the inner wall of the sealing gasket is in close contact with the outer wall of the cup opening.

[0014] Furthermore, a handle is fixedly installed on the outside of the cup lid, and the handle is made of rubber material.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] 1. This utility model forms an elastic locking structure by cooperating with the sealing buckle and the limiting buckle: when the sealing buckle is engaged, pressure is applied to the upper seat by squeezing the limiting buckle, so that the outer walls of the upper seat and the lower seat are tightly fitted to the arc-shaped locking groove of the sealing buckle, avoiding loosening of the locking. This structure not only solves the problem of existing buckles being "too loose and easy to fall off, too tight and difficult to open", but also effectively improves the sealing performance and provides a better user experience.

[0017] 2. This utility model product adopts a two-stage sealing structure: "cup lid-cup body seal + flip-top-spout seal". The cup lid and cup mouth are tightly fitted by a sealing gasket, and the elastic deformation of food-grade silicone fills the gaps, preventing liquid leakage from the connection between the cup lid and the cup body. The flip-top and spout are interference-fitted by a sealing ball, the diameter of which is slightly larger than the inner diameter of the spout, ensuring that the spout is tightly filled when closed. The two-stage sealing structure works together, so even if one sealing element has a slight deviation, the other sealing element can still effectively prevent leakage. Compared with the existing single sealing structure, the leakage prevention success rate is increased by more than 90%, making it especially suitable for outdoor bumpy or inverted carrying scenarios. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts.

[0019] in:

[0020] Figure 1 This is a schematic diagram showing the separation of the cup body and the cup lid of this utility model;

[0021] Figure 2 This is a schematic diagram of the combination of the cup body and the cup lid of this utility model;

[0022] Figure 3 This is a schematic diagram of the cup lid structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the separation of the cup lid and the limiting buckle of this utility model;

[0024] Figure 5 This is a schematic diagram of the installation of the cup lid and the limiting buckle of this utility model.

[0025] Explanation of reference numerals in the attached diagram: 1. Cup body; 101. Cup mouth; 102. Limiting pad; 2. Cup lid; 201. Sealing pad; 202. Water spout; 203. Lower seat; 204. Limiting buckle; 3. Flip lid; 301. Sealing ball; 302. Upper seat; 4. Sealing buckle; 5. Spout cover. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0028] like Figures 1 to 5 As shown, a leak-proof thermos cup includes a cup body 1, a cup lid 2, a flip lid 3, and a sealing buckle 4;

[0029] The cup body 1 is made of double-layer stainless steel, with a vacuum insulation cavity formed between the inner and outer layers, which can effectively block heat transfer and achieve heat preservation or cold preservation functions. The top of the cup body 1 is integrally formed with a cup mouth 101, and the outer wall of the cup mouth 101 is machined with external threads for connection with the cup lid 2; at the same time, a limiting pad 102 is fixedly installed on the lower outer side of the cup mouth 101 with food-grade adhesive. The limiting pad 102 is a ring-shaped silicone pad, and its inner diameter is adapted to the outer diameter of the cup mouth 101, which can limit the installation position of the cup lid 2 and prevent the cup lid 2 from being excessively screwed into the cup mouth 101, causing the sealing gasket 201 to be deformed by pressure.

[0030] The cup lid 2 is injection molded from food-grade PP material. Its inner wall is machined with an internal thread that matches the external thread of the cup mouth 101. The cup lid 2 and the cup body 1 are detachably connected through the thread engagement. The number of thread engagement turns is 2-3 turns, which ensures connection stability and facilitates quick assembly and disassembly.

[0031] A sealing gasket 201, made of food-grade silicone, is embedded in the lower part of the cup lid 2 to prevent liquid from leaking from the gap between the cup lid 2 and the cup mouth 101. A spout 202 is formed through the top of the cup lid 2, and a spout sleeve 5 is fitted on top of the spout 202. The spout 202 has a cylindrical structure with rounded edges to prevent lip injury when drinking. When multiple people share the thermos (such as parents and children alternating in a family setting), the spout sleeve 5 can serve as an independent contact part, with each person having their own spout sleeve 5. Changing the spout sleeve 5 prevents cross-contamination of oral bacteria between different users, improving safety during sharing. A lower base 203 is integrally formed on one side of the cup lid 2. The lower base 203 is a U-shaped block structure, and a limit buckle 204, made of plastic, is installed inside via a rotating shaft. The limit buckle 204 can rotate within a certain range around the shaft. The lid 2 has a handle mounted on its exterior via a pivot. The handle is made of rubber with anti-slip textures on the surface, making it easy to hold or hang. The rubber material also improves grip comfort and prevents burns in low or high temperature environments.

[0032] The flip cover 3 is made of food-grade PP material and is mounted on top of the cup lid 2 via a hinge. The hinge is a damping hinge, allowing the flip cover 3 to be suspended at any angle within the range of 0-90°, which is convenient for fixing the position of the flip cover 3 when drinking water and prevents the flip cover 3 from rotating randomly. Inside the flip cover 3, a sealing ball 301 is integrally molded by injection molding. The sealing ball 301 is made of silicone material, and its diameter is larger than the inner diameter of the spout 202. The axis of the sealing ball 301 is coaxial with the axis of the spout 202. When the flip cover 3 is closed, the sealing ball 301 can be embedded inside the spout 202, and the spout 202 is sealed through interference fit, preventing liquid from leaking from the spout 202. The flip cover 3 has an integrally formed upper seat 302 on the side near the lower seat 203. The upper seat 302 is a block structure that matches the size of the lower seat 203. When the flip cover 3 is closed, the bottom surface of the upper seat 302 fits against the top surface of the lower seat 203, forming a mating structure that can be fastened by the sealing buckle 4.

[0033] The sealing buckle 4 is made of plastic and is installed on the outside of the cup lid 2 by rotating around the shaft. The inner side of the sealing buckle 4 is provided with an arc-shaped locking groove. The arc of the locking groove is adapted to the outer wall arc of the lower seat 203 and the upper seat 302, which can ensure that it fits tightly with the lower seat 203 and the upper seat 302 when it is fastened.

[0034] Working principle: When the cup lid 2 is installed and sealed, align the internal thread of the cup lid 2 with the external thread of the cup mouth 101 of the cup body 1, and rotate the cup lid 2 clockwise until the bottom of the cup lid 2 contacts the top surface of the limiting pad 102. The limiting pad 102 restricts the cup lid 2 from being screwed in too much. At this time, the sealing pad 201 inside the cup lid 2 fits tightly with the outer wall of the cup mouth 101. The elastic deformation of the silicone material fills the gap of the fitting surface, preventing the liquid inside the cup body 1 from leaking from the connection between the cup lid 2 and the cup mouth 101, thus achieving a first-level seal between the cup lid 2 and the cup body 1.

[0035] When the flip cover 3 is closed and sealed, rotate the flip cover 3 around the hinge to bring it closer to the top of the cup lid 2 until the flip cover 3 is fully closed. At this time, the sealing ball 301 inside the flip cover 3 is embedded inside the spout 202 of the cup lid 2. Since the diameter of the sealing ball 301 is slightly larger than the inner diameter of the spout 202, the sealing ball 301 undergoes elastic deformation under pressure, tightly filling the internal space of the spout 202, preventing the liquid inside the cup body 1 from leaking from the spout 202, thus achieving a secondary seal for the spout 202. At the same time, the upper seat 302 of the flip cover 3 fits against the top surface of the lower seat 203 of the cup lid 2, preparing for the locking of the sealing buckle 4.

[0036] When the sealing buckle 4 needs to be engaged and reinforced, rotate the sealing buckle 4 downward around the axis, so that the arc-shaped engagement groove of the sealing buckle 4 gradually fits the outer wall of the lower seat 203 and the upper seat 302. As the sealing buckle 4 continues to rotate, the inner wall of the sealing buckle 4 contacts one side of the limiting buckle 204 and generates pressure, forcing the limiting buckle 204 to rotate upward around the axis. During the rotation of the limiting buckle 204, one side of its top end applies upward pressure to the upper seat 302 of the flip cover 3, causing the upper seat 302 to move away from the lower seat 203 (the contact surfaces of the upper seat 302 and the lower seat 203 show a slight tendency to separate), thereby causing the outer walls of the upper seat 302 and the lower seat 203 to tightly press the inner wall of the arc-shaped engagement groove of the sealing buckle 4, realizing the tight engagement of the sealing buckle 4 with the lower seat 203 and the upper seat 302. This engagement structure can fix the position of the flip cover 3, prevent the flip cover 3 from being opened accidentally and causing the seal to fail, and further enhance the tightness of the fit between the sealing ball 301 and the water outlet 202, improving the anti-leakage effect.

[0037] When water is needed, rotate the sealing buckle 4 upward around the axis to disengage the arc-shaped locking groove of the sealing buckle 4 from the lower seat 203 and the upper seat 302. At this time, the sealing buckle 4 releases its pressure on the limiting buckle 204, causing the limiting buckle 204 to rotate downward around the axis and return to its initial tilted state. Then, rotate the flip cover 3 upward, and the sealing ball 301 disengages from the inside of the spout 202, allowing the user to drink directly through the spout 202 fitted with the mouth cover 5. The soft touch and temperature buffering effect of the mouth cover 5 improve drinking comfort and avoid discomfort when the lips come into contact with the spout 202. If the mouth cover 5 needs to be replaced or cleaned, it can be removed at this time, which is convenient and does not affect the normal drinking process.

[0038] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0039] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0040] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A leak-proof thermos cup, characterized in that, It includes a cup body (1), a cup lid (2), a flip lid (3), and a sealing buckle (4); The cup lid (2) is threaded onto the cup mouth (101). A sealing gasket (201) adapted to the cup mouth (101) is provided on the lower part of the inside of the cup lid (2). A water outlet (202) is provided through the top of the cup lid (2), and a spout sleeve (5) is provided on the water outlet (202). A lower seat (203) is integrally formed on one side of the cup lid (2). A limit buckle (204) is installed inside the lower seat (203) by rotating through a pivot. The flip cover (3) is mounted on the top of the cup lid (2) by hinge rotation, and the flip cover (3) can close the water outlet (202) when closed. A sealing ball (301) is fixedly installed inside the flip cover (3), and an upper seat (302) is integrally formed on the side of the flip cover (3) near the lower seat (203). The sealing buckle (4) is rotatably installed on the outside of the cup lid (2), and the sealing buckle (4) is used to fasten the lower seat (203) and the upper seat (302).

2. The leak-proof thermos cup according to claim 1, characterized in that: When the sealing buckle (4) engages the lower seat (203) and the upper seat (302), the sealing buckle (4) squeezes the limiting buckle (204). After being squeezed, the limiting buckle (204) applies pressure to the upper seat (302), causing the upper seat (302) to move away from the lower seat (203), thereby achieving a tight engagement between the sealing buckle (4) and the lower seat (203) and the upper seat (302).

3. The leak-proof thermos cup according to claim 1, characterized in that: The sealing ball (301) is coaxially arranged with the water outlet (202). When the flip cover (3) is closed, the sealing ball (301) is embedded inside the water outlet (202) and forms a seal.

4. The leak-proof thermos cup according to claim 1, characterized in that: A return spring is provided between the limit buckle (204) and the lower seat (203). When the sealing buckle (4) releases its pressure on the limit buckle (204), the return spring drives the limit buckle (204) to return to its initial position.

5. The leak-proof thermos cup according to claim 1, characterized in that: The top of the cup body (1) is provided with a cup mouth (101), and a limiting pad (102) is fixedly installed on the lower outside of the cup mouth (101).

6. The leak-proof thermos cup according to claim 1, characterized in that: The sealing gasket (201) is made of elastic material, and the inner wall of the sealing gasket (201) is in close contact with the outer wall of the cup mouth (101).

7. The leak-proof thermos cup according to claim 1, characterized in that: The cup lid (2) is fixedly fitted with a handle, which is made of rubber material.

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