Heat preservation bag with good sealing performance
By using elastic strips and sealing components in the design of the thermal pack, the problem of rainwater entering due to users forgetting to close the sealing strip is solved, achieving an automatic sealing effect and enhancing the waterproof performance of the thermal pack.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN BIJIE INTELLIGENT MFG TECH CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-05-12
AI Technical Summary
If the user forgets to close the seal on the existing insulated bag, rainwater can easily enter through the opening, causing damage to the items inside.
A heat-insulating bag with good sealing performance was designed, which adopts elastic strips and sealing components. The elastic strips automatically rebound to seal the opening of the bag when the user forgets to close it. The combination of foldable design and magnetic components enhances the sealing effect.
Even if the user forgets to close the sealing component, the elastic strip automatically springs back to seal, preventing rainwater from entering and improving the sealing and waterproof performance of the insulation bag.
Smart Images

Figure CN224219677U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal insulation bag technology, and in particular to a thermal insulation bag with good sealing performance. Background Technology
[0002] Insulated packs are essential equipment for carrying travel items, especially for outdoor enthusiasts. However, when traveling outdoors, if it rains, rainwater can seep into the insulated pack and soak the contents. Therefore, waterproof insulated packs have emerged on the market.
[0003] For example, patent CN213800951 U discloses a handbag with good sealing effect. By setting a sealing strip inside the bag body, the sealing performance is enhanced. After the item is placed inside the bag body, the sealing strip and the sealing groove are pressed together to overlap, so that the inside of the bag body is sealed. Then, the hook side of one end of the connecting piece is pressed and glued to the rough side on the double-layer edge, so that the bag body is double sealed, thereby achieving enhanced sealing performance.
[0004] The problem with the above technology is that when a user takes out items from the bag, they need to unseal the seal. If the user forgets to reseal the seal after taking out the items, rainwater will enter through the opening of the bag and soak the items inside.
[0005] Therefore, a heat-insulating bag with good sealing performance is proposed to solve the above-mentioned technical problems. Utility Model Content
[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a thermal insulation bag with good sealing performance, which can also seal the opening of the thermal insulation bag even when the user forgets to manually close it.
[0007] The technical solution adopted by this utility model to solve the problem is: a heat-insulating bag with good sealing performance, including a bag body with an upper opening, the bag body including a front end and a rear end, a sealing component provided on the front end and the rear end, the sealing component being used to seal the opening of the bag body, and an elastic strip also being provided opposite to the front end and the rear end, the elastic strip being located below the sealing component, the length of the elastic strip being consistent with the opening length of the bag body, the elastic strip being able to automatically spring back and straighten after being bent, so that the front end and the rear end abut against each other and seal the opening of the bag body.
[0008] As a further improvement to the above technical solution, the sealing assembly includes interlocking zippers.
[0009] As a further improvement to the above technical solution, the sealing assembly includes a sealing strip and a sealing groove that engage with each other.
[0010] As a further improvement to the above technical solution, the upper end of the package is provided with a folding part, and the upper end of the package can be bent and folded along the folding part so that the opening of the package faces downward.
[0011] As a further improvement to the above technical solution, the folding part includes an upper end and a lower end, with a folding line between the upper end and the lower end, and magnetic elements are provided on both the upper end and the lower end. The upper end can be folded and bent along the folding line, and the upper end can abut against the lower end through the magnetic elements.
[0012] As a further improvement to the above technical solution, the magnetic component is disposed at the front end or at the rear end.
[0013] As a further improvement to the above technical solution, a carrying strap is provided on the outer surface of the bag.
[0014] The beneficial effects of this utility model are: when a user needs to take out items from the bag, the sealing component needs to be unlocked and the elastic strip needs to be pried open to separate the front and rear ends, thus opening the bag. When the user takes out items from the bag but forgets to close the sealing component, the elastic strip can use its own elasticity to drive the front and rear ends to come closer together and abut against each other, thereby sealing the opening of the bag and preventing rainwater from entering. Attached Figure Description
[0015] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.
[0016] Figure 1 This is a structural diagram of the present invention;
[0017] Figure 2 This is an internal view of the present invention;
[0018] Figure 3 This is a top view of the present invention.
[0019] In the diagram: 1-Pack body, 11-Front end, 12-Rear end, 13-Folding part, 14-Upper end, 15-Lower end, 16-Folding line, 2-Sealing assembly, 3-Elastic strip, 4-Magnetic component, 5-Carrying strap. Detailed Implementation
[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0024] Reference Figures 1 to 3 A heat-insulating bag with good sealing performance includes a bag body 1 with an upper opening. The bag body 1 includes a front end 11 and a rear end 12. A sealing component 2 is provided on the front end 11 and the rear end 12. The sealing component 2 is used to seal the opening of the bag body 1. An elastic strip 3 is also provided on the front end 11 and the rear end 12 opposite to each other. The elastic strip 3 is located below the sealing component 2. The length of the elastic strip 3 is the same as the length of the opening of the bag body 1. After the elastic strip 3 is bent, it can automatically spring back and straighten, so that the front end 11 and the rear end 12 abut against each other and seal the opening of the bag body 1.
[0025] When a user needs to take out items from the bag, they need to unlock the sealing component 2 and pry open the elastic strip 3 to separate the front end 11 and the rear end 12, thus opening the bag body 1. If the user takes out items from the bag but forgets to close the sealing component 2, the elastic strip 3 can use its own elasticity to move the front end 11 and the rear end 12 closer together and abut against each other, thereby sealing the opening of the bag body 1 and preventing rainwater from entering.
[0026] In a preferred embodiment, the sealing assembly 2 includes interlocking zippers.
[0027] In a preferred embodiment, the sealing assembly 2 includes a sealing strip and a sealing groove that engage with each other.
[0028] In a preferred embodiment, the upper end of the package 1 is provided with a folding part 13, and the upper end of the package 1 can be bent and folded along the folding part 13 so that the opening of the package 1 faces downward, thereby further increasing the sealing performance of the package 1.
[0029] In a preferred embodiment, the folding portion 13 includes an upper end portion 14 and a lower end portion 15, with a folding line 16 between the upper end portion 14 and the lower end portion 15. Both the upper end portion 14 and the lower end portion 15 are provided with magnetic elements 4. The upper end portion 14 can be folded and bent along the folding line 16. The upper end portion 14 can abut against the lower end portion 15 through the magnetic elements 4. The magnetic elements 4 can ensure that the upper end portion 14 is always in contact with the lower end portion 15.
[0030] In a preferred embodiment, the magnetic element 4 is disposed at the front end 11, or the magnetic element 4 is disposed at the rear end 12.
[0031] In a preferred embodiment, a carrying strap 5 is provided on the outer surface of the bag body 1.
[0032] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.
Claims
1. A heat-insulating bag with good sealing performance, characterized in that: The package includes a top-opening package (1), which includes a front end (11) and a rear end (12). A sealing component (2) is provided on the front end (11) and the rear end (12). The sealing component (2) is used to seal the opening of the package (1). An elastic strip (3) is also provided on the front end (11) and the rear end (12) opposite to each other. The elastic strip (3) is located below the sealing component (2). The length of the elastic strip (3) is the same as the length of the opening of the package (1). The elastic strip (3) can automatically spring back and straighten after being bent, so that the front end (11) and the rear end (12) abut against each other and seal the opening of the package (1).
2. The heat-insulating bag with good sealing performance as described in claim 1, characterized in that: The sealing assembly (2) includes interlocking zippers.
3. The heat-insulating bag with good sealing performance as described in claim 1, characterized in that: The sealing assembly (2) includes a sealing strip and a sealing groove that engage with each other.
4. A heat-insulating bag with good sealing performance as described in claim 2 or 3, characterized in that: The upper end of the package (1) is provided with a folding part (13), and the upper end of the package (1) can be bent and folded along the folding part (13) so that the opening of the package (1) faces downward.
5. The heat-insulating bag with good sealing performance as described in claim 4, characterized in that: The folding part (13) includes an upper end (14) and a lower end (15), with a folding line (16) between the upper end (14) and the lower end (15). Both the upper end (14) and the lower end (15) are provided with magnetic elements (4). The upper end (14) can be folded and bent along the folding line (16), and the upper end (14) can abut against the lower end (15) through the magnetic elements (4).
6. The heat-insulating bag with good sealing performance as described in claim 5, characterized in that: The magnetic element (4) is disposed at the front end (11), or the magnetic element (4) is disposed at the rear end (12).
7. The heat-insulating bag with good sealing performance as described in claim 6, characterized in that: The outer surface of the package (1) is provided with a shoulder strap (5).