Thermos bottle with bottle cap sealing structure

Abstract

The utility model belongs to the technical field of heat preservation containers, and discloses a vacuum bottle with a bottle cap sealing structure, which comprises a bottle cap and a bottle body. The bottle cap is provided with a first sealing plug, the first sealing plug is composed of a first connecting part and a first sealing part, and the first sealing plug is connected with the bottle body through the connecting part. The first sealing part is a sealing thin wall integrally machined and formed and is tightly attached to the inner wall of the bottle body to seal the opening of the bottle body. The thickness of the sealing thin wall is uniform and ranges from 0.08 cm to 0.12 cm. The circumferential surface of the first sealing part can form a conical or arc-shaped sealing surface so as to enhance the sealing effect. When an arc-shaped sealing face is formed, the first sealing part comprises a transition section, a sealing section and a free section, the curvature radius of the sealing section is small, and a sealing contact area is formed. The sealing performance and the heat preservation effect of the thermos bottle are improved by adopting the sealing thin wall which is integrally machined and formed. The structure and the processing technology of the thermos bottle are simplified, and the processing difficulty and the processing cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat preservation containers, and particularly relates to a thermos with a bottle cap sealing structure. Background Art

[0002] As a common daily necessity, thermos bottles are widely used in various occasions where heat preservation is required, such as families, offices, outdoors, etc. Although traditional thermos bottles can achieve a certain degree of heat preservation effect, their sealing performance is often not satisfactory, resulting in a significant reduction in the heat preservation effect and prone to problems such as water leakage. Especially at the connection between the bottle cap and the bottle body, due to unreasonable structural design and material selection, it often becomes a weak link in the sealing performance of the thermos bottle.

[0003] In order to improve the sealing performance of thermos bottles, various improvement schemes have emerged in the prior art, such as using a tighter thread connection, adding a sealing ring, etc. However, these schemes often have problems such as complex structure, high processing difficulty, high cost, and limited improvement in sealing effect. Especially after long-term use, due to factors such as material aging and wear, the sealing performance often further deteriorates.

[0004] Therefore, how to design a thermos bottle with a simple structure, convenient processing, low cost and excellent sealing performance has become an urgent problem to be solved currently. Summary of the Utility Model

[0005] The first aspect of the utility model lies in providing a thermos with a bottle cap sealing structure. By optimizing the connection structure between the bottle cap and the bottle body and adopting a sealing thin wall formed by integral processing, it realizes a tight fit with the inner wall of the bottle body, thereby effectively improving the sealing performance and heat preservation effect of the thermos bottle.

[0006] To solve the above technical problems, the present application provides a thermos with a bottle cap sealing structure, including a bottle cap and a bottle body. The bottle cap includes a first sealing plug, the first sealing plug is provided with a first connecting portion and a first sealing portion. The first sealing plug is connected to the bottle body through the first connecting portion. The first sealing portion is a sealing thin wall formed by integral processing, which fits with the inner wall of the bottle body to seal the opening of the bottle body.

[0007] In addition to the above technical features, the present application has also made improvements in the following aspects:

[0008] In some embodiments, the thickness of the sealing thin wall is uniform, and the thickness of the sealing thin wall is 0.08 cm - 0.12 cm.

[0009] In some embodiments, the outer diameter of the first sealing portion gradually decreases from the first connecting portion to the lower end of the first sealing portion, forming a conical sealing surface on the circumferential surface of the first sealing portion.

[0010] In some embodiments, the circumferential surface of the first sealing portion forms an arc-shaped sealing surface;

[0011] The arc-shaped sealing surface includes a transition section, a sealing section, and a free section;

[0012] The radius of curvature of the arc-shaped sealing surface at the sealing section is smaller than that of the transition section and the free section;

[0013] The arc-shaped sealing surface forms a sealing contact area at the sealing section.

[0014] In some embodiments, the interior of the first sealing plug is hollow, and a bushing is provided in the hollow part. The bushing abuts against the sealing thin wall at the end of the first sealing portion to support the sealing thin wall.

[0015] In some embodiments, the bushing is of a sleeve structure. One end is turned outwards to form a first folded edge that fits against the inner wall of the first sealing plug. The first folded edge is installed on the inner wall of the first sealing plug. The other end is turned inwards to form an annular fitting surface, and the annular fitting surface fits against the sealing thin wall.

[0016] In some embodiments, the bottle body includes a bottle body and a bottle liner. A sealing cavity is provided at the part of the inner part of the bottle body that fits against the sealing thin wall. The sealing cavity is an annular chamber. One inner side wall of the annular chamber is an integral structure with the bottle liner. The outer side wall of the annular chamber fits against and abuts against the inner wall of the bottle body, and the thickness of the outer side wall is greater than that of the inner side wall.

[0017] In some embodiments, the lower part of the inner side wall of the annular chamber is provided as an arc-shaped transition surface, and a gap is formed between the arc-shaped transition surface and the sealing thin wall; the upper part of the inner side wall of the annular chamber is a sealing contact surface, and the sealing contact surface is an arc-shaped contact surface, and the radian of the arc-shaped contact surface is greater than that of the arc-shaped transition surface.

[0018] In some embodiments, the inner side wall and the outer side wall of the annular chamber are symmetrically arranged to form an irregular spherical chamber structure with a larger upper part and a smaller lower part in cross-section.

[0019] In some embodiments, the bottle cap includes a sealing cap and a second sealing plug. The second sealing plug includes a second connecting portion and a second sealing portion. The second sealing plug is arranged inside the sealing cap. The top of the second sealing plug is connected to the sealing cap. The outer diameter of the second sealing plug is smaller than the inner diameter of the sealing cap. The upper circumferential side of the second sealing plug fits against the sealing protrusion provided at the bottle mouth of the bottle body to form a primary sealing structure; the second sealing portion of the second sealing plug uses a sealing thin wall and fits against the inner wall of the bottle body to form a secondary sealing structure.

[0020] The utility model has at least the following beneficial effects:

[0021] 1. In this application, the sealing plug includes a connecting portion and a sealing portion. The connecting portion is used to tightly connect the sealing plug to the bottle body, while the sealing portion adopts an integrally processed and formed sealing thin wall. The design of this structure enables the sealing portion to perfectly fit the inner wall of the bottle body, thereby achieving effective sealing of the bottle body opening.

[0022] 2. In this application, the thickness of the sealing thin wall is precisely controlled between 0.08 cm and 0.12 cm to ensure that it has sufficient elasticity to adapt to the changes in the inner wall of the bottle body and can maintain sufficient strength to resist external pressure.

[0023] 3. In this application, the circumferential surface of the first sealing portion is designed as a conical or arc-shaped sealing surface. This design enables the first sealing portion to better fit the inner wall of the bottle body under pressure, forming a more tightly sealed contact area.

[0024] 4. In this application, the inside of the sealing plug is designed as a hollow structure, and a bushing is provided therein. The bushing tightly abuts against the sealing thin wall at the end of the first sealing portion, providing additional support for it and further enhancing the stability and durability of the seal.

[0025] In summary, the present utility model proposes a thermos bottle with a bottle cap sealing structure. By adopting an integrally processed and formed sealing thin wall, after the bottle cap is closed, the sealing thin wall tightly fits the inner wall of the bottle body, making the connection between the bottle cap and the bottle body tighter, effectively preventing water leakage, and improving the sealing performance and heat preservation effect of the thermos bottle. At the same time, this structural design simplifies the structure and processing technology of the thermos bottle, reducing the processing difficulty and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of this application and form a part of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application.

[0027] Figure 1 It is a schematic diagram of the combined structure of the bottle cap and the bottle body in Embodiment 1 of this application;

[0028] Figure 2 It is a schematic diagram of the combined structure of the bottle cap and the bottle body in Embodiment 2 of this application;

[0029] Figure 3 It is a schematic diagram of the combined structure of the bottle cap and the bottle body in Embodiment 3 of this application;

[0030] Figure 4 It is a schematic diagram of the combined structure of the bottle cap and the bottle body in Embodiment 4 of this application;

[0031] Figure 5 It is a schematic diagram of the overall structure of the thermos bottle.

[0032] The reference numerals in the figures are as follows:

[0033] 1. Bottle cap; 11. First sealing plug; 101. First connecting portion; 102. First sealing portion; 201. Sealing cover; 202. Second sealing plug; 2021. Second connecting portion; 2022. Second sealing portion; 112. Conical sealing surface; 122. Arc-shaped sealing surface; 1221. Transition section; 1222. Sealing section; 1223. Free section; 2. Bottle body; 21. Bottle body; 22. Bottle liner; 23. Sealing protrusion; 3. Bushing; 31. First hem; 32. Ring-shaped fitting surface; 4. Sealing cavity; 41. Inner side wall; 411. Arc-shaped transition surface; 412. Sealing contact surface; 42. Outer side wall; 5. Gap. Detailed implementation manners

[0034] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present application and its application or use. The present application can be implemented in other different forms and is not limited to the embodiments described herein.

[0035] I. Explanation of descriptive terms in the present application

[0036] The embodiments given in combination with the technical solutions of the present application are to make the present application more thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specifically stated in the present application, the relative arrangements of the components described in these embodiments should be construed as merely exemplary and not as a limitation on the technical solutions of the present application.

[0037] In the present application, if directional terms such as "upper", "lower", "left", "right", "bottom", "top", etc. are involved, they are defined relative to the directions in each drawing and are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may also change accordingly. These or other directional terms should not be construed as restrictive terms.

[0038] In the present application, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices and have an intermediate device.

[0039] In addition, the present application does not discuss in detail the technologies and devices known to those of ordinary skill in the relevant fields, but under appropriate circumstances, the said technologies and devices should be regarded as part of the specification.

[0040] The application scenarios of this application are mainly based on insulated containers, and can also be applied to other scenarios according to their functions. The application scenarios are not restricted or limited by the specific embodiments described in this application.

[0041] Second, due to the problems of complex processing technology, high processing cost, and limited improvement in sealing effect existing in the existing bottle cap sealing mechanism. Especially after long-term use, due to factors such as material aging and wear, the sealing performance often further deteriorates. This application specifically provides a technical solution to solve the above problems. The technical solution, working principle, and technical effects of this application will be described in detail below with specific embodiments.

[0042] Embodiment 1

[0043] As Figure 5 shown, this utility model describes a thermos with a sealing structure of bottle cap 1. The thermos includes bottle cap 1 and bottle body 2.

[0044] As Figure 1 shown, bottle cap 1 includes a first sealing plug 11. The first sealing plug 11 is provided with a first connecting portion 101 and a first sealing portion 102. The first sealing plug 11 is connected to bottle body 2 through the first connecting portion 101. The stable connection between the first connecting portion 101 and bottle body 2 further enhances the sealing effect, enabling the thermos to maintain a sealed state even when shaken or tilted.

[0045] In this embodiment, the first sealing portion 102 of the first sealing plug 11 adopts a sealing thin wall formed by integral processing, which fits with the inner wall of bottle body 2 to seal the opening of bottle body 2. The fit between the sealing thin wall and the inner wall of bottle body 2 also reduces heat conduction and further improves the heat preservation effect.

[0046] By adopting a sealing thin wall formed by integral processing, it ensures the tight fit between the sealing thin wall and the inner wall of bottle body 2, thereby effectively preventing liquid leakage. The structure of the sealing thin wall formed by integral processing simplifies the production process and reduces the manufacturing cost.

[0047] The above structural design makes the assembly of the bottle cap simpler, reduces additional sealing components and assembly steps, and improves production efficiency.

[0048] Preferably, the first sealing portion 102 of the first sealing plug 11 adopts a sealing thin wall formed by integral processing, and the thickness of the sealing thin wall is evenly distributed between 0.08 cm and 0.12 cm. This design ensures the tight and uniform fit between the first sealing portion 102 and the inner wall of bottle body 2, effectively preventing liquid leakage and ensuring the sealing effect.

[0049] In addition, the use of a uniform sealed thin wall can form an effective sealing surface at the opening of the bottle body 2, significantly reducing heat dissipation, thereby extending the heat preservation time, enabling the liquid in the bottle to maintain its temperature for a longer time, and enhancing the heat preservation effect.

[0050] In this example, the sealed thin wall has a uniform thickness and excellent elasticity, which enables it to maintain stable sealing performance during long-term use, while enhancing the wear resistance and aging resistance of the thermos flask and extending the service life of the product.

[0051] As an optimization, the circumferential surface of the first sealing part 102 constitutes a conical sealing surface 112, and the outer diameter of the first sealing part 102 tapers from the first connecting part 101 to the lower end of the first sealing part 102, forming the conical sealing surface 112.

[0052] The circumferential surface of the first sealing part 102 constitutes a conical sealing surface 112. This design enables the first sealing part 102 to form a larger contact area when contacting the inner wall of the bottle body 2, thereby enhancing the sealing effect.

[0053] When the bottle cap 1 is closed, the design of the conical sealing surface 112 enables the first sealing part 102 to better adapt to the shape of the inner wall of the bottle body 2 under pressure, forming a tighter seal and effectively preventing liquid leakage.

[0054] In summary, due to the tight fit between the conical sealing surface 112 and the inner wall of the bottle body 2, the sealing effect is improved and the heat dissipation path is reduced. At the same time, the improvement of the sealing performance makes the temperature inside the bottle more stable and extends the heat preservation time.

[0055] In this embodiment, the design of the conical sealing surface 112 also simplifies the structure of the first sealing part 102, making it easier to implement during manufacturing and processing, improving the processing accuracy, thereby reducing the gap between the first sealing part 102 and the inner wall of the bottle body 2 and reducing the risk of heat dissipation and liquid leakage.

[0056] As a further optimization, the inside of the first sealing plug 11 is designed as a hollow structure, and a bushing 3 is arranged in the hollow part of the first sealing plug 11. The bushing 3 abuts against the sealed thin wall at the end of the first sealing part 102 for supporting the sealed thin wall.

[0057] The bushing 3 is of a sleeve structure, with one end folded outward to form a first folded edge 31 that fits against the inner wall of the first sealing plug 11. The first folded edge 31 is installed on the inner wall of the first sealing plug 11, and the other end is folded inward to form an annular fitting surface 32, which fits against the sealed thin wall.

[0058] By adopting the above design, the bushing 3 abuts against the sealing thin wall at the end of the first sealing portion 102, providing additional supporting force, enabling the sealing thin wall to maintain a more stable sealing state when contacting the inner wall of the bottle body 2. This design effectively reduces the problem of poor sealing caused by the deformation of the sealing thin wall.

[0059] The annular fitting surface 32 of the bushing 3 fits closely with the sealing thin wall, further enhancing the sealing effect and preventing liquid from leaking through tiny gaps.

[0060] The bushing 3 is provided in the hollow part, which not only supports the sealing thin wall but also enhances the overall structural stability of the first sealing plug 11. When subjected to external pressure or impact, the bushing 3 can disperse the force and protect the sealing thin wall from damage.

[0061] The fitting design of the first flanging 31 with the inner wall of the first sealing plug 11 ensures the firm installation of the bushing 3 inside the first sealing plug 11 and prevents the bushing 3 from shifting or falling off during use.

[0062] Embodiment 2

[0063] The difference between this embodiment and Embodiment 1 is that as Figure 2 shown, the circumferential surface of the first sealing portion 102 forms an arc-shaped sealing surface 122, and the arc-shaped sealing surface 122 includes a transition section 1221, a sealing section 1222, and a free section 1223.

[0064] As an optimized design, the radius of curvature of the arc-shaped sealing surface 122 at the sealing section 1222 is smaller than that of the transition section 1221 and the free section 1223.

[0065] Among them, after the bottle cap 1 is closed, a sealing contact area is formed at the sealing section 1222 of the arc-shaped sealing surface 122 to seal the bottle mouth.

[0066] In terms of structural design, the transition section 1221 is located at one end of the first sealing portion 102, and its radius of curvature is relatively large, facilitating smooth transition and connection with other components. The main function of the transition section 1221 is to reduce stress concentration and improve the connection strength between the first sealing portion 102 and other components.

[0067] The sealing section 1222 is located between the transition section 1221 and the free section 1223 and is the core part of the first sealing portion 102.

[0068] The radius of curvature of the sealing section 1222 is smaller than that of the transition section 1221 and the free section 1223, making a relatively tight arc-shaped sealing surface 122 formed in this area. The main function of the sealing section 1222 is to form a sealing contact area to ensure the sealing effect.

[0069] The free section 1223 is located at the other end of the first sealing part 102 and has a relatively large radius of curvature, providing a certain degree of flexibility. The main function of the free section 1223 is to adapt to deformations under different temperature and pressure conditions, maintaining the stability and sealing performance of the first sealing part 102.

[0070] In summary, the entire arc-shaped sealing surface 122 is a continuous curved surface jointly formed by the circumferential surfaces of the transition section 1221, the sealing section 1222, and the free section 1223.

[0071] At the sealing section 1222, due to the decrease in the radius of curvature, the arc-shaped sealing surface 122 forms a relatively tight sealing contact area, effectively preventing the leakage of gas or liquid. The relatively large radii of curvature of the transition section 1221 and the free section 1223 help reduce stress concentration and improve the adaptability of the first sealing part 102.

[0072] Embodiment Three

[0073] The difference between this embodiment and Embodiment One and Embodiment Two is that, as Figure 3 shown, the bottle body 2 includes a bottle body 21 and a bottle liner 22. A sealing cavity 4 is provided at the part of the inner side of the bottle body 21 that is in contact with the sealing thin wall. The sealing cavity 4 is an annular chamber. The inner side wall 41 of the annular chamber is an integral structure with the bottle liner 22. The outer side wall 42 of the annular chamber fits against the inner wall of the bottle body 21 and abuts against the inner wall of the bottle body 21. The thickness of the outer side wall 42 is greater than the thickness of the inner side wall 41.

[0074] In this embodiment, the bottle body 2 is mainly composed of two parts: the bottle body 21 and the bottle liner 22. The bottle liner 22 is located inside the bottle body 21 and is used to hold liquid. The bottle body 21 and the bottle liner 22 can be made of materials such as stainless steel, or glass or ceramic materials can also be selected.

[0075] A sealing cavity 4 in the form of an annular chamber is provided at the part of the inner side of the bottle body 21 that is in contact with the sealing thin wall. This sealing cavity 4 is used to achieve a sealed connection between the bottle cap and the bottle liner 22.

[0076] The sealing cavity 4 is an annular chamber, and its shape is adapted to the inner wall of the bottle body 21 to ensure the sealing effect.

[0077] The sealing cavity 4 can be formed by circumferentially machining an annular groove at the opening of the bottle liner 21. One side of the inner side wall 41 of the annular chamber is integrally formed with the bottle liner 22, that is, the inner side wall 41 and the bottle liner 22 are made of the same material and manufacturing process, ensuring the firmness of the connection. The outer side wall 42 of the annular chamber fits against the inner wall of the bottle body 21 and abuts against the inner wall of the bottle body 21, forming a tight sealing structure.

[0078] As an optimization, the thickness of the outer wall 42 of the sealing cavity 4 is greater than that of the inner wall 41. Such a design can enhance the strength and rigidity of the outer wall 42, and improve the pressure resistance and service life of the sealing cavity 4.

[0079] Through the sealing cavity 4 provided in the annular chamber in the bottle body 2 structure, a tight seal between the bottle cap and the bottle liner 22 is achieved, effectively preventing liquid leakage.

[0080] Among them, the design with the outer wall 42 having a greater thickness than the inner wall 41 enhances the strength and rigidity of the sealing cavity 4, and improves the pressure resistance and service life of the bottle body 2.

[0081] As a further optimization, the lower part of the inner wall 41 of the annular chamber is provided with an arc transition surface 411, and a gap 5 is formed between the arc transition surface 411 and the sealing thin wall.

[0082] The upper part of the inner wall 41 of the annular chamber is a sealing contact surface 412, and the sealing contact surface 412 is an arc contact surface, and the radian of the arc contact surface is greater than that of the arc transition surface 411.

[0083] Through the above design, the lower part of the inner wall 41 of the annular chamber is designed as an arc transition surface 411, and a gap 5 is formed between the arc transition surface 411 and the sealing thin wall, which is convenient for providing necessary buffering and adaptability during assembly. At the same time, the contact surface between the sealing cavity and the liquid is improved. When hot water is filled into the bottle body, heat is transferred to the inside of the sealing cavity through the inner wall, and the gas inside the sealing cavity expands due to heat, causing the sealing cavity to expand due to heat, further improving the fitting effect between the sealing cavity and the sealing thin wall.

[0084] In addition, the design of the arc transition surface 411 can reduce the leakage path of fluid or gas between the sealing cavity and the sealing thin wall, thereby improving the sealing performance. Due to the existence of the gap 5, when the fluid or gas passes through, it needs to bypass the arc transition surface 411, increasing the flow resistance and reducing the possibility of leakage.

[0085] Due to changes in factors such as temperature and pressure, the first sealing portion 102 may undergo slight deformation. The design of the arc transition surface 411 can better adapt to these deformations and maintain the effectiveness of the seal.

[0086] The upper part of the inner wall 41 of the annular chamber is a sealing contact surface 412, and the sealing contact surface 412 is designed as an arc contact surface. Compared with the arc transition surface 411, its radian is larger to ensure a tighter contact and higher sealing effect with the sealing thin wall.

[0087] The annular chamber is formed inside the bottle liner 22 through precise processing techniques, including the processing of the arc transition surface 411 and the arc contact surface, to ensure the accuracy of its shape and size.

[0088] The inner wall 41 and the outer wall 42 of the annular chamber are symmetrically arranged to form an irregular spherical chamber structure with a larger upper part and a smaller lower part in cross-section. Among them, the arc contact surface with a larger radian ensures closer contact with the sealing thin wall and higher sealing effect, effectively preventing liquid leakage.

[0089] Example 4

[0090] Compared with the above three examples, the distinguishing technical feature of this example is that: as Figure 4 shown, the bottle cap 1 of this thermos flask includes a sealing cover 201 and a second sealing plug 202. The sealing cover 201 adopts a shape that is easy to hold and rotate, such as a cylindrical shape or a shape with a certain taper, so as to facilitate the user to easily open and close the bottle cap 1. The top of the sealing cover 201 can be provided with anti-slip textures or protrusions to increase the user's hand feeling and control force when using.

[0091] Among them, the second sealing plug 202 includes a second connecting portion 2021 and a second sealing portion 2022. The second sealing plug 202 is arranged inside the sealing cover 201. The top of the second sealing plug 202 is connected to the sealing cover 201. The outer diameter of the second sealing plug 202 is smaller than the inner diameter of the sealing cover 201. The upper circumferential side of the second sealing plug 202 fits with the sealing protrusion 23 provided at the bottle mouth of the bottle body 2 to form a primary sealing structure.

[0092] The upper circumferential side of the second sealing plug 202 is designed with a groove or an inclined surface that matches the sealing protrusion 23 at the bottle mouth to ensure that when the bottle cap 1 is tightened, the second sealing plug 202 can form a tight primary sealing structure with the bottle mouth.

[0093] The fitting of the second sealing plug 202 with the sealing protrusion 23 at the bottle mouth forms a primary sealing structure. The tight fitting of the second sealing plug 202 with the sealing protrusion 23 effectively reduces the possibility of liquid leakage from the bottle mouth.

[0094] The second sealing portion 2022 is the key part of the second sealing plug 202. The second sealing portion 2022 of the second sealing plug 202 is provided with a sealing thin wall and fits with the inner wall of the bottle liner to form a secondary sealing structure. The sealing thin wall has both a certain elasticity and can closely fit with the inner wall of the bottle liner.

[0095] With the above design, when the bottle cap 1 is tightened on the bottle mouth, the upper circumferential side of the second sealing plug 202 closely fits with the sealing protrusion 23 at the bottle mouth to form a primary sealing structure, effectively preventing liquid from leaking from the bottle mouth. At the same time, the second sealing portion 2022 of the second sealing plug 202 can closely fit with the inner wall of the bottle liner due to the use of a sealing thin wall to form a secondary sealing structure, further enhancing the sealing performance of the bottle cap 1.

[0096] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0097] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement; when the combination of technical solutions results in contradictions or cannot be implemented, it is considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. A thermos bottle with a bottle cap sealing structure, characterized in that: The invention comprises a bottle cap (1) and a bottle body (2), wherein the bottle cap (1) comprises a first sealing plug (11), wherein the first sealing plug (11) is provided with a first connecting portion (101) and a first sealing portion (102), wherein the first sealing plug (11) is connected to the bottle body (2) via the first connecting portion (101), and wherein the first sealing portion (102) is a sealing thin wall formed by integral processing and is fitted to the inner wall of the bottle body (2) to seal the opening of the bottle body (2).

2. The thermos bottle with a bottle cap sealing structure according to claim 1, characterized in that: The thickness of the sealing thin wall is uniform, and the thickness of the sealing thin wall is 0.08cm-0.12cm.

3. The thermos bottle with a bottle cap sealing structure according to claim 2, characterized in that: The outer diameter of the first sealing portion (102) gradually decreases from the first connecting portion (101) to the lower end of the first sealing portion (102), forming a conical sealing surface (112) on the circumferential surface of the first sealing portion (102).

4. The thermos bottle with a bottle cap sealing structure according to claim 3, characterized in that: The circumferential surface of the first sealing portion (102) forms an arc-shaped sealing surface (122); The arc-shaped sealing surface (122) comprises a transition section (1221), a sealing section (1222), and a free section (1223); The curvature radius of the arc-shaped sealing surface (122) at the sealing section (1222) is smaller than the curvature radius of the transition section (1221) and the free section (1223); The arc-shaped sealing surface (122) forms a sealing contact area at the sealing section (1222).

5. The thermos bottle with a bottle cap sealing structure according to claim 1, characterized in that: The interior of the first sealing plug (11) is hollow, and a bushing (3) is provided in the hollow portion. The bushing (3) abuts against the sealing thin wall at the end of the first sealing portion (102) to support the sealing thin wall.

6. The thermos bottle with a bottle cap sealing structure according to claim 5, characterized in that: The bushing (3) is a sleeve structure, one end of which is folded outward to form a first folded edge (31) that fits with the inner wall of the first sealing plug (11), the first folded edge (31) is installed on the inner wall of the first sealing plug (11), and the other end is folded inward to form an annular fitting surface (32), and the annular fitting surface (32) fits with the sealing thin wall.

7. The thermos bottle with a bottle cap sealing structure according to claim 3 or 4, characterized in that: The bottle body (2) comprises a bottle body (21) and a bottle liner (22); a sealed cavity (4) is arranged at a position inside the bottle body (21) that is in contact with the sealed thin wall; the sealed cavity (4) is an annular cavity; an inner side wall (41) of the annular cavity and the bottle liner (22) are an integral structure; an outer side wall (42) of the annular cavity is in contact with the inner wall of the bottle body (21) and abuts against the inner wall of the bottle body (21); and the thickness of the outer side wall (42) is greater than the thickness of the inner side wall (41).

8. The thermos bottle with a bottle cap sealing structure according to claim 7, characterized in that: The lower part of the inner wall (41) of the annular chamber is arranged as an arc-shaped transition surface (411), and a gap (5) is formed between the arc-shaped transition surface (411) and the sealing thin wall; the upper part of the inner wall (41) of the annular chamber is a sealing contact surface (412), and the sealing contact surface (412) is an arc-shaped contact surface, and the curvature of the arc-shaped contact surface is greater than the curvature of the arc-shaped transition surface (411).

9. The thermos bottle with a bottle cap sealing structure according to claim 7, characterized in that: The inner wall (41) and the outer wall (42) of the annular chamber are symmetrically arranged to form a spherical chamber structure with a cross section that is larger at the top and smaller at the bottom.

10. The thermos bottle with a bottle cap sealing structure according to claim 1, characterized in that: The bottle cap (1) comprises a sealing cover (201) and a second sealing plug (202), wherein the second sealing plug (202) comprises a second connecting portion (2021) and a second sealing portion (2022), wherein the second sealing plug (202) is arranged inside the sealing cover (201), and the top of the second sealing plug (202) is connected to the sealing cover (201), the outer diameter of the second sealing plug (202) is smaller than the inner diameter of the sealing cover (201), and the upper circumferential side of the second sealing plug (202) is fitted with a sealing protrusion (23) provided at the bottle mouth of the bottle body (2) to form a primary sealing structure; and the second sealing portion (2022) of the second sealing plug (202) adopts a sealing thin wall and is fitted with the inner wall of the bottle body (2) to form a secondary sealing structure.

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