Vacuum inner container and luggage case

Abstract

The utility model discloses a vacuum inner container and a luggage case, which relates to the technical field of vacuum inner containers and comprises a cavity, a sealing structure and an exhaust valve. The edges of the sheet bodies are arranged to form the sealing tape through hot pressing, and the cavity is formed between the two sheet bodies and the sealing tape. The sealing structure and the exhaust valve are also connected to the sheet body in a sealing manner in a hot pressing manner, so that the operation is simple during vacuumizing, and external air cannot enter the cavity from the sealing structure and the exhaust valve; the sealing structure is composed of the two pieces of installation weaving cloth, the zipper tooth row and the puller, and when the cavity needs to be opened or closed, a user can operate the puller to slide on the zipper tooth row to achieve opening or closing of the cavity. Through the structure, the sealing structure is not easy to deform and loosen due to external force, the sealing performance is excellent, and articles of a user are effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of vacuum liner technology, and in particular to vacuum liners and suitcases. Background Technology

[0002] Suitcases are typically used to store clothing, personal care items, and souvenirs needed for travel. When packing, the interior has a large, compressible space, so placing items directly into a suitcase takes up a lot of space, limiting the usable items. Furthermore, items tend to shift during transport or moving, easily becoming scattered and prone to damage from bumps and knocks, affecting their usability. Most current luggage packing methods utilize vacuum bags made of plastic film and clip-on zippers. These bags are secured with plastic clips and vacuum-sealed before being placed in the bag. This method is cumbersome, lacks reliable sealing, and the closure easily deforms and loosens under external force. Moreover, the vacuum bags still shift during transport, failing to securely hold the items within the bag. Utility Model Content

[0003] The purpose of this invention is to provide a vacuum liner and suitcase. This invention creates a vacuum liner and suitcase by directly drawing a vacuum inside the suitcase, which is simple to operate, provides good sealing, and is not easily deformed by external forces, effectively protecting travelers' belongings.

[0004] This utility model is achieved through the following technical solution:

[0005] A vacuum liner includes: two edge-connected sheets, each sheet comprising a fabric layer, and a first insulating layer for preventing airflow on the side of the fabric layer near the cavity; the edges of the two sheets are heat-pressed to form a sealing strip, and a cavity is formed between the two sheets and the sealing strip; at least one of the two sheets is provided with a sealing structure for opening or closing the cavity and an exhaust valve for venting; and the sealing structure and the exhaust valve are also heat-pressed and sealed to the sheet.

[0006] As a further description of the above technical solution:

[0007] The sealing structure includes an airtight zipper, which includes two mounting fabrics and a second isolation layer. The two mounting fabrics are fixedly connected to a zipper tooth row on their opposite sides near the cavity, and a zipper head is provided between the two zipper tooth rows. The second isolation layer is provided on the side of the two mounting fabrics away from the cavity.

[0008] As a further description of the above technical solution:

[0009] The sheet body has a first opening for connecting a sealing structure, and the pull head can move within the first opening; the second insulating layer at least covers the first opening.

[0010] As a further description of the above technical solution:

[0011] The number of the second isolation layers is two, and the two second isolation layers are respectively connected to the side of the two mounting fabrics facing away from the cavity by heat pressing, for covering the mounting fabrics and the zipper teeth.

[0012] As a further description of the above technical solution:

[0013] The sealing structure has at least one handle extending in its extension direction. The handle is made of a flexible strip material folded in half, and an arc-shaped grip is connected to the folded part.

[0014] As a further description of the above technical solution:

[0015] There are two handles, which are located at opposite ends of the extension direction of the sealing structure, and the central axis of the handles is parallel to the extension direction of the sealing structure; the end of the handle closest to the sealing structure is fixed to the sheet by heat pressing.

[0016] As a further description of the above technical solution:

[0017] One end of the flexible strip material is fixed to the sheet body by hot pressing, and the other end is connected to the end of the flexible strip material fixed to the sheet body by a fixed connection or a detachable connection.

[0018] As a further description of the above technical solution:

[0019] The plate body is provided with a second opening for connecting an exhaust valve. The exhaust valve includes a connecting piece located on the side of the plate body near the cavity, and the connecting piece can at least cover the second opening. The connecting piece is connected to the plate body by heat pressing.

[0020] As a further description of the above technical solution:

[0021] The fabric layer is woven from one or more of the following: polyester fiber, polypropylene fiber, nylon fiber, spandex fiber, acrylic fiber, nonwoven fiber, aramid fiber, vinylon fiber, polyvinyl alcohol fiber, and polypropylene fiber.

[0022] A suitcase includes a suitcase body, characterized in that the suitcase has a vacuum liner, the vacuum liner being connected to the suitcase body via a zipper; and the bottom of the suitcase body is provided with casters.

[0023] This utility model has the following beneficial effects:

[0024] This utility model discloses a vacuum liner. A sealing strip is formed by hot-pressing the edges of two sheet-like components, creating a cavity between them. The sealing structure and exhaust valve are also hot-pressed and sealed to the sheet-like components. Vacuuming is simple, and external air cannot enter the cavity through the sealing structure and exhaust valve. The sealing structure consists of two fabric mountings, zipper teeth, and a zipper pull. To open or close the cavity, the user can slide the zipper pull along the zipper teeth. This design ensures the sealing structure is resistant to deformation and loosening under external force, providing excellent sealing performance and effectively protecting the user's belongings. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the suitcase proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the vacuum inner liner proposed in this utility model;

[0027] Figure 3 for Figure 2 A schematic diagram of the overall structure from another angle;

[0028] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the structure shown in the AA direction;

[0029] Figure 5 for Figure 4 A partially enlarged structural diagram of section B;

[0030] Figure 6 This is a schematic diagram of the overall structure of the sealing structure;

[0031] Figure 7 This is a schematic diagram of the overall structure of the fabric layer;

[0032] Legend:

[0033] 1. Sheet body; 11. Fabric layer; 12. First isolation layer; 2. Second sheet body; 3. Cavity; 4. Sealing structure; 41. Installed fabric; 411. Second isolation layer; 42. Zipper chain teeth; 43. Slipper head; 13. First opening; 5. Exhaust valve; 51. Connecting piece; 6. Sealing strip; 7. Handle; 8. Box body; 9. Zipper; 10. Casters. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1 to 7 The vacuum liner provided by this utility model includes:

[0036] Two edge-connected sheet bodies 1, each sheet body 1 including a fabric layer 11, and a first isolation layer 12 for isolating airflow is provided on the side of the fabric layer 11 near the cavity 3. The edges of the two sheet bodies are heat-pressed to form a sealing strip 6, and a cavity 3 is formed between the two sheet bodies and the sealing strip 6. At least one of the two sheet bodies 1 is provided with a sealing structure 4 for opening or closing the cavity 3 and an exhaust valve 5 for venting air. The sealing structure 4 and the exhaust valve 5 are sealed and connected to the sheet body by means of heat pressing, gluing, or sewing.

[0037] The vacuum liner provided by this utility model includes a sheet 1, which comprises a fabric layer 11 and a first insulating layer 12. The fabric layer 11 typically has good flexibility, and the first insulating layer 12 can be an insulating layer with airtight function, such as a gas barrier membrane, an airtight sealant, or an airtight coating. The two edge-connected sheets 1 combine the fabric layer 11 and the first insulating layer 12 together, achieving functional complementarity and making the overall performance of the sheet 1 more reliable. Preferably, the edges of the two sheets 1 are hot-pressed to form a sealing strip 6, creating a cavity 3 between the two sheets 1 and the sealing strip 6, eliminating the need for glue or adhesive. It avoids harmful substances such as formaldehyde that may be generated during the adhesive process, making it more environmentally friendly and human health-friendly. Moreover, it is simple to operate, which not only improves production efficiency but also reduces production costs. The edge connection effectively prevents the fabric layer 11 and the first isolation layer 12 of the sheet from separating or misaligning during use. The cavity 3 is equipped with a sealing structure 4 for opening or closing the cavity 3 and an exhaust valve 5 for venting. When vacuuming, the sealing structure 4 is closed, and the air inside the cavity 3 is only discharged through the exhaust valve 5. The components are compactly designed, have excellent sealing performance, and are easy to operate, effectively protecting the user's items.

[0038] The sealing structure 4 includes an airtight zipper, which comprises two mounting fabrics 41 and a second isolation layer 411. Zipper teeth 42 are fixedly connected to the opposite sides of the two mounting fabrics 41 near the cavity 3, and a zipper pull 43 is disposed between the two zipper teeth 42. The second isolation layer 411 is disposed on the side of the two mounting fabrics 41 facing away from the cavity 3. The sealing structure 4 uses an airtight zipper, which is not easily deformed or loosened by external force. The user can open or close the cavity 3 by sliding the zipper pull 43 on the zipper teeth 42.

[0039] The sheet 1 has a first opening 13 for connecting the sealing structure 4, and the zipper pull 43 can move within the first opening 13; the second isolation layer 411 at least covers the first opening 13. There are two second isolation layers 411, and the two second isolation layers 411 are respectively connected to the side of the two mounting fabrics 41 facing away from the cavity 3 by hot pressing, for covering the mounting fabrics 41 and the zipper teeth 42. By hot pressing, the second isolation layers 411 and the mounting fabrics 41 are tightly bonded, forming a sealing strip around the zipper chain, which can effectively prevent the entry of external air under vacuum, greatly improving the sealing performance of the zipper part. This method is simple to operate, low in cost, and suitable for large-scale production. Furthermore, the bond formed during the hot pressing process has high strength and stability, and can resist prolonged water immersion and water flow impact. Even under frequent or constant water contact, the joint between the second isolation layer 411 and the mounting fabric 41 is not easily separated or damaged, thus ensuring the durability of the sealing function. The hot-pressed second isolation layer 411 and the mounting fabric 41 can better withstand the pulling and friction forces generated by the opening and closing of the pull head 43 on the covered material, and are less prone to tearing, delamination and other problems, thus extending the service life of the product.

[0040] The zipper pull 43 is equipped with a sealing strip inside. The part of the sealing strip that contacts the zipper teeth 42 is made of silicone material, which is used to further enhance the sealing when the zipper pull slides.

[0041] The fabric layer 11 is woven from one or more of the following: polyester fiber, polypropylene fiber, nylon fiber, spandex fiber, acrylic fiber, nonwoven fiber, aramid fiber, vinylon fiber, polyvinyl alcohol fiber, and polypropylene fiber. The textile layer is selected from different materials such as polyester fiber, nylon fiber, or spandex fiber, allowing for flexible combinations to meet specific needs and adjust performance balance according to application scenarios, further imparting functions such as waterproofing.

[0042] The sealing structure 4 has at least one handle 7 extending in its extension direction. The handle 7 is formed by folding a flexible strip material in half, with an arc-shaped grip connected to the fold. The flexible strip material includes nylon tape, webbing, or polyurethane tape, etc. In this embodiment, there are two handles 7, located at opposite ends of the sealing structure 4 extending in its extension direction, with the central axis of the handles 7 parallel to the extension direction of the sealing structure 4. The end of the handle 7 closest to the sealing structure 4 is fixed to the sheet 1 by heat pressing. In other embodiments, the sealing structure 4 has one handle 7 extending in its extension direction; one end of the flexible strip material is fixed to the sheet 1 by heat pressing, and the other end is connected to the end of the flexible strip material fixed to the sheet 1 by a fixed connection or a detachable connection. The flexible strip material can be fixed to the sheet 1 by heat pressing, sewing, or gluing; it can also be detachably connected to the sheet 1 by snaps. Because the sealing structure 4 has an airtight zipper with good sealing effect, more force is required on the zipper pull 43 when opening or closing the airtight zipper. The handle acts as a force point, distributing the tension on the zipper and reducing the local stress on the zipper during opening and closing. This helps extend the service life of the sealing structure, reduces the risk of zipper damage, and ensures that the sealing of the item is not affected. The sealing structure 4 has at least one handle 7 in its extending direction. The handle, formed by folding a flexible strip, has a certain degree of flexibility and adjustability, conforms to the curve of the hand, effectively reduces hand pressure, and can adapt to different usage scenarios. For example, when it is necessary to quickly open or close the airtight zipper, the handle can provide better operating space and force support; when it is necessary to hang items, the handle can also serve as a hanging point, increasing the usage methods and flexibility of the item.

[0043] The sheet body 1 has a second opening for connecting the exhaust valve 5. The exhaust valve 5 includes a connecting piece 51, which is located on the side of the sheet body 1 near the cavity and can at least cover the second opening. The connecting piece 51 is connected to the sheet body 1 by thermo-pressing. When positive pressure is generated inside the suitcase due to compression, the gas exhaust valve 5 is released, and the internal sealing structure of the valve, such as the rubber gasket, opens under air pressure, allowing gas to escape. When the internal pressure decreases or the external pressure increases, the sealing component resets due to gravity or reverse air pressure, closing the exhaust channel and preventing external air from flowing back. The connecting piece 51 is fused to the sheet body 1 through a high-temperature and high-pressure process, avoiding the risk of aging of traditional adhesives. The sealing performance is stable under long-term use and suitable for frequent opening and closing scenarios. Compressed air is quickly released through directional exhaust, while the one-way sealing design ensures that the interior remains under negative pressure after vacuuming, improving storage efficiency.

[0044] This utility model discloses a suitcase comprising a suitcase body 8, a zipper 9, and a vacuum liner. The vacuum liner is connected to the suitcase body 8 via the zipper 9. The bottom of the suitcase body 8 is equipped with casters 10. The vacuum liner, connected to the suitcase body 8 via the zipper 9, can be independently disassembled for cleaning or replacement. When the zipper is closed, it forms a sealed space, allowing for rapid vacuuming with an exhaust valve. This design is simple to operate and provides excellent sealing performance. Furthermore, the vacuum liner is fixed to the suitcase body 8 on all four sides, maintaining a vacuum while securing it to the suitcase. The vacuum liner and its contents will not shift or be damaged during transport. The zipper 9 connection facilitates easy removal and insertion of the vacuum liner into the suitcase. Alternatively, by disassembling three zippers and fixing one zipper, other items can be inserted into the suitcase body 8 after the vacuum liner is emptied, maximizing space utilization.

[0045] Working Principle: The vacuum liner and suitcase provided by this utility model include a suitcase body, a zipper, a vacuum liner, and casters. The vacuum liner consists of two sheet-like parts whose edges are heat-pressed to form a sealing strip, creating a cavity between the two sheets and the sealing strip. It is equipped with a sealing structure for opening or closing the cavity and an exhaust valve for venting air. When a vacuum is applied, the sealing structure 4 closes, and the air inside the cavity 3 is only discharged through the exhaust valve 5. The sealing structure consists of two fabric panels, zipper teeth, and a zipper pull. When the cavity needs to be opened or closed, the user can slide the zipper pull along the zipper teeth. The liner components are compactly designed, have excellent sealing performance, and are easy to operate, effectively protecting the user's belongings.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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.

Claims

1. A vacuum liner, characterized in that, include: Two edge-connected sheet bodies (1) are formed by hot pressing to form a sealing strip (6) between the edges of the two sheet bodies (1) and the sealing strip (6), and a cavity (3) is formed between the two sheet bodies (1) and the sealing strip (6); the sheet body (1) includes a fabric layer (11), and a first isolation layer (12) for isolating air flow is provided on the side of the fabric layer (11) near the cavity (3); at least one of the two sheet bodies (1) is provided with a sealing structure (4) for opening or closing the cavity (3) and an exhaust valve (5) for exhausting air; and the sealing structure (4) and the exhaust valve (5) are also sealed and connected to the sheet body (1) by hot pressing.

2. The vacuum liner according to claim 1, characterized in that: The sealing structure (4) includes an airtight zipper, which includes two mounting fabrics (41) and a second isolation layer (411). The two mounting fabrics (41) are fixedly connected to a zipper tooth row (42) on the side of their opposite sides near the cavity (3). A zipper head (43) is provided between the two zipper tooth rows (42). The second isolation layer (411) is provided on the side of the two mounting fabrics (41) away from the cavity (3).

3. A vacuum liner according to claim 2, characterized in that: The sheet (1) is provided with a first opening (13) for connecting the sealing structure (4), and the pull head (43) can move within the first opening (13); the second isolation layer (411) at least covers the first opening (13).

4. A vacuum liner according to claim 2, characterized in that: There are two second isolation layers (411), and the two second isolation layers (411) are respectively connected to the side of the two mounting fabrics (41) away from the cavity (3) by hot pressing, for covering the mounting fabrics (41) and the zipper teeth (42).

5. A vacuum liner according to claim 1, characterized in that: The sealing structure (4) is provided with at least one handle (7) in the extending direction. The handle (7) is made of a flexible strip material folded in half, and an arc-shaped grip is connected at the fold.

6. A vacuum liner according to claim 5, characterized in that: There are two handles (7), which are located at both ends of the extension direction of the sealing structure (4) and the central axis of the handles (7) is parallel to the extension direction of the sealing structure (4); the end of the handle (7) near the sealing structure (4) is fixed to the sheet (1) by hot pressing.

7. A vacuum liner according to claim 5, characterized in that: One end of the flexible strip material is fixed to the sheet (1) by hot pressing, and the other end is connected to the end of the flexible strip material fixed to the sheet (1) by a fixed connection or a detachable connection.

8. A vacuum liner according to claim 1, characterized in that: The plate (1) is provided with a second opening for connecting an exhaust valve (5). The exhaust valve (5) includes a connecting piece (51). The connecting piece (51) is located on the side of the plate (1) near the cavity, and the connecting piece (51) can at least cover the second opening. The connecting piece (51) is connected to the plate (1) by hot pressing.

9. A vacuum liner according to claim 1, characterized in that: The fabric layer (11) is woven from one or more of the following: polyester fiber, polypropylene fiber, nylon fiber, spandex fiber, acrylic fiber, nonwoven fiber, aramid fiber, vinylon fiber, polyvinyl alcohol fiber, and polypropylene fiber.

10. A suitcase, comprising a case body (8), characterized in that, The suitcase has a vacuum liner as described in any one of claims 1-9, the vacuum liner being connected to the suitcase body (8) via a zipper (9); the bottom of the suitcase body (8) is provided with casters (10).

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