Air column raft
By fixing the anti-torsion plate on the air column bag, the problem of the air column bag being easy to bend is solved, stable floating in water is achieved and the carrying capacity is improved, which reduces the transportation cost and quality and expands the application scenarios.
Patent Information
- Application Number
- CN202422686090.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Existing inflatable rafts and air column bags have problems such as easy bending, instability, heavy weight and high cost during water transportation, which limits their application scenarios.
An anti-torsion plate is fixed on the air column bag, and the inflatable layer is connected to the anti-torsion plate through sealing points and connecting protrusions to ensure that the air column bag is not easily bent in water, and the carrying capacity is improved through material selection and design improvements.
The air column bag can float stably in water and has improved its carrying capacity, thus reducing transportation costs and quality and expanding its application scenarios.
Smart Images
Figure CN223371097U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of floating devices, in particular to an air column raft. Background Art
[0002] In some water transportation scenarios, rubber inflatable boats are often used. These durable inflatable boats are widely used for water activities such as leisure, entertainment, and fishing. The buoyancy of the inflatable boat is divided into multiple independent air chambers. Even if a single air chamber is damaged, the remaining parts still maintain sufficient buoyancy. However, these inflatable boats are difficult to store for leisure use, are too heavy, and are relatively expensive.
[0003] An air bag is made of two layers of plastic film sealed together, with several sealing lines separating the bag into individual air columns. This bag also has multiple independent air chambers, sharing the same characteristics as the aforementioned air raft, but is lighter and less expensive, making it an ideal carrier for short-distance water transport. However, due to the parallel arrangement of its multiple air columns, air bags are prone to bending at the sealing lines, making them unstable and ineffective in carrying objects in water, limiting their use in water. Utility Model Content
[0004] The utility model provides an air column raft. A plate for resisting bending is fixed on an air column bag, so that the air column bag is not easily bent in water, thereby improving the carrying capacity of the air column bag.
[0005] An air column raft includes an inflatable layer, which includes floating air columns. The ends of the floating air columns are provided with air inlet channels. There are two or more independent floating air columns, which are distributed along the extension direction of the air inlet channel. A vertical sealing line is provided between the two floating air columns. An air valve membrane is provided between the floating air columns and the air inlet channel. The air valve membrane allows gas to enter the floating air columns from the air inlet channel without flowing in the opposite direction. The raft also includes an anti-torsion plate, which is a hard plate, and the inflatable layer is fixed on the anti-torsion plate.
[0006] This technical solution effectively solves the problem of air bag flexing. As a common packaging cushioning material, air bags require independent air columns and the ability to bend easily. Independent air columns reduce the impact between air columns. Even if a single air column leaks, the others still provide cushioning protection. This flexing property allows them to be packed into smaller boxes, reducing shipping costs. The independent air columns are suitable for use in cargo rafts. The only issue to be addressed is the flexing property. Using a rigid board to secure the air bag to the torsion plate allows it to float stably in water and carry cargo, improving its surface loading capacity.
[0007] Preferably, a sealing point is provided on the vertical sealing line, connecting the inflatable layer and the anti-torsion plate. This design allows the inflatable layer to be fixed to the anti-torsion plate without affecting the air volume of the air column, and the inflatable layer and the anti-torsion plate are connected by welding, thereby improving the connection strength.
[0008] Furthermore, the sealing points are spaced between the vertical sealing lines. Because the air bag expands vertically after inflation, its width in the air inlet channel decreases as it expands. If sealing points were placed on every vertical sealing line, significant tensile stress would be generated on one side of the inflated layer. This could cause the center of the torsion plate to bulge, resulting in undulations on the surface and making it difficult to place objects stably. Spacing the sealing points can alleviate this problem to a certain extent, resolving the undulations on the torsion plate's surface.
[0009] Specifically, the torsion plate is provided with a connecting protrusion, and the sealing point is fixed to the connecting protrusion. If the sealing point is directly sealed to the torsion plate, the floating air column will expand evenly after inflation, pressing toward one side of the torsion plate, and the sealing point will pull the torsion plate, which may cause the torsion plate to undulate. Designing a connecting protrusion on the torsion plate increases the sealing height of the sealing point, reserving a certain amount of expansion space for the floating air column, and thus solves the problem of undulation in the torsion plate.
[0010] Preferably, the floating air column comprises an upper film and a lower film. The lower film completely covers and is fixed to the torsion plate. The upper film is sealed to the lower film via vertical sealing lines to form the floating air column. This design allows the lower film to expand toward the torsion plate, fundamentally solving the problem of undulating torsion plates.
[0011] Furthermore, the width of the upper film material on a single floating air column is greater than that of the lower film material. If the lower film side is not inflated, the overall air volume of the air column will be reduced, reducing the amount of displacement of the air column raft in the water, and thus reducing buoyancy. To address this problem, the width of the upper film material on a single floating air column is greater than that of the lower film material. This allows the gas to further expand toward the upper film side, effectively increasing the air volume of the floating air column.
[0012] Specifically, the lower film is fixed to the torsion plate by gluing. If heat sealing is used, either multi-point sealing is used, which still causes the lower film to expand toward the torsion plate; or an oversized heating copper plate is used. However, such a large heating copper plate cannot maintain surface flatness, resulting in localized gaps in contact with the torsion plate, causing uneven sealing. This is manifested in some areas being sealed while others are not. Gluing can completely adhere the lower film to the torsion plate, effectively solving this uneven sealing problem.
[0013] Preferably, the torsion plate is made of polyoxymethylene. Polyoxymethylene has high strength, wear resistance, and chemical corrosion resistance. Its melting temperature is between 160 degrees Celsius and 180 degrees Celsius, which is also the temperature range for sealing the air column bag. This allows the inflatable layer to be fixed to the torsion plate without causing leakage due to excessive melting of the inflatable layer due to high temperature.
[0014] Preferably, the anti-torsion plate is provided with anti-slip texture on the side away from the inflatable layer, which can effectively solve the problem of objects slipping due to the smooth surface of polyformaldehyde.
[0015] Preferably, the torsion plate is at least 8 mm thick. The torsion plate needs to resist the bending of the inflatable layer. If the thickness is less than 8 mm, the plate will bend along with the inflatable layer because it cannot resist the bending force of the inflatable layer in the water, and will not play a role in resisting bending.
[0016] After adopting this technical solution, a plate that resists bending is fixed on the air column bag, making the air column bag less likely to bend in water and improving its surface carrying capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0018] Figure 1 is a schematic structural diagram of the embodiment;
[0019] Figure 2 This is a schematic diagram of the sealing point position structure of the inflation layer in the embodiment;
[0020] Figure 3 2 is a schematic cross-sectional view of the sealing point and the connecting protrusion of the inflation layer in the embodiment;
[0021] Figure 4 is a schematic cross-sectional view of the lower film attached to the anti-torsion plate and the upper film protrusion in the embodiment;
[0022] Figure 5 This is a schematic diagram of the structure of the anti-slip problem of the anti-torsion plate in the embodiment;
[0023] Among them, there are an inflatable layer-1, a floating air column-11, an upper film-111, a lower film-112, an air inlet channel-12, an air valve membrane-13, a vertical sealing line-14, a sealing point-15, an anti-torsion plate-2, a connecting protrusion-21, and an anti-slip texture-22. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
[0025] An air column raft includes an inflatable layer 1, which includes a floating air column 11. The end of the floating air column 11 is provided with an air inlet channel 12. There are two or more independent floating air columns 11. The floating air columns 11 are distributed along the extension direction of the air inlet channel 12. A vertical sealing line 14 is provided between the two floating air columns 11. An air valve membrane 13 is provided between the floating air column 11 and the air inlet channel 12. The air valve membrane 13 allows gas to enter the floating air column 11 from the air inlet channel 12 without flowing in the opposite direction. The raft also includes an anti-torsion plate 2, which is a hard plate. The inflatable layer 1 is fixed on the anti-torsion plate 2.
[0026] This technical solution effectively solves the problem of air column bags being easily bent. As a common packaging cushioning material, air column bags themselves need to have independent air columns and be easily bent. Independent air columns can reduce the impact between air columns. Even if a single air column leaks, the other air columns can still provide cushioning protection. The easy bending feature allows them to be stuffed into smaller packaging boxes, reducing transportation costs. The characteristics of independent air columns can adapt to the working scenarios of cargo rafts. The only problem to be solved is the easy bending feature. A hard plate is used to fix the air column bag on the anti-torsion plate 2, enabling it to float stably in water and carry cargo, thereby improving its surface carrying capacity.
[0027] As a first embodiment of the connection between the inflatable layer and the torsion plate, a sealing point 15 is provided on the vertical sealing line 14, connecting the inflatable layer 1 and the torsion plate 2. This design allows the inflatable layer 1 to be fixed to the torsion plate 2 without affecting the air volume of the air column, and the inflatable layer 1 and the torsion plate 2 are connected by welding, thereby improving the connection strength.
[0028] In order to alleviate the tensile stress generated on the torsion plate after the air bag is inflated in this embodiment, the sealing points 15 are spaced between the vertical sealing lines 14. Because the air bag expands in height after inflation, the width of the air bag in the direction of the air inlet channel 12 will shrink as it expands. If a sealing point 15 is set on each vertical sealing line 14, a large tensile stress will appear on one side of the inflation layer 1, which may cause the middle of the torsion plate 2 to bulge, resulting in undulations on the surface of the torsion plate 2, making it impossible to place objects stably. The spacing of the sealing points 15 can alleviate this phenomenon to a certain extent, solving the problem of undulations on the surface of the torsion plate 2.
[0029] Specifically, the torsion plate 2 is provided with a connecting protrusion 21, and the sealing point 15 is fixed to the connecting protrusion 21. If the sealing point 15 is directly sealed to the torsion plate 2, the floating air column 11 will expand evenly after inflation, pressing toward one side of the torsion plate 2. The sealing point 15 will then pull the torsion plate 2, potentially causing the torsion plate 2 to undulate. Designing the connecting protrusion 21 on the torsion plate 2 increases the sealing height of the sealing point 15, reserving a certain expansion space for the floating air column 11, and thus solving the problem of the torsion plate 2 undulating.
[0030] As a second embodiment of the connection between the inflatable layer and the torsion plate, the floating air column 11 comprises an upper film 111 and a lower film 112. The lower film 112 completely covers and is fixed to the torsion plate 2. The upper film 111 is sealed to the lower film 112 via vertical sealing lines 14, thereby forming the floating air column 11. This design allows the lower film 112 to expand toward the torsion plate 2, fundamentally solving the problem of undulating torsion plate 2.
[0031] To address the issue of insufficient inflation in this embodiment, the width of the upper film 111 of a single floating air column 11 is greater than the width of the lower film 112. If one side of the lower film 112 is uninflated, the overall inflation volume of the air column is reduced, reducing the displacement of the air column raft in the water and, in turn, reducing buoyancy. To address this issue, the width of the upper film 111 on a single floating air column 11 is greater than the width of the lower film 112. This allows the gas to further expand toward the upper film 111, effectively increasing the inflation volume of the floating air column 11.
[0032] Specifically, the lower film 112 is fixed to the torsion plate 2 by gluing. If heat sealing is used, either multi-point sealing is used, which will still cause the lower film 112 to expand toward the torsion plate 2; or an oversized heating copper plate is used. However, the surface flatness of the heating copper plate with an excessively large area cannot be controlled, and there will be local gaps in contact with the torsion plate 2, resulting in uneven sealing. Specifically, some areas are sealed and some are not. Gluing can completely adhere the lower film 112 to the torsion plate 2, effectively solving the uneven sealing problem.
[0033] As a preferred material for the torsion plate, polyoxymethylene is used for the torsion plate 2. Polyoxymethylene has high strength, wear resistance, and chemical resistance. Its melting temperature is between 160°C and 180°C, which is also the temperature range for sealing the air column bag. This allows the inflatable layer 1 to be fixed to the torsion plate 2 without causing leakage due to excessive melting of the inflatable layer 1 due to high temperatures.
[0034] The anti-torsion plate 2 is provided with an anti-slip texture 22 on the side away from the inflatable layer 1. This arrangement can effectively solve the problem of objects slipping due to the smooth surface of polyoxymethylene.
[0035] The thickness of the torsion plate 2 is at least 8 mm. The torsion plate 2 needs to resist the bending of the inflatable layer 1. If the thickness is less than 8 mm, the torsion plate 2 will bend along with the inflatable layer 1 because it cannot resist the bending force of the inflatable layer 1 in the water, and will not play the role of resisting bending.
[0036] After adopting this technical solution, a plate that resists bending is fixed on the air column bag, making the air column bag less likely to bend in water and improving its surface carrying capacity.
[0037] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An air column raft, comprising an inflatable layer, wherein the inflatable layer comprises floating air columns, each of which is provided with an air inlet channel. The floating air columns are provided with two or more independent floating air columns, the floating air columns being distributed along the extension direction of the air inlet channel, a vertical sealing line being provided between two floating air columns, and an air valve membrane being provided between the floating air columns and the air inlet channel, the air valve membrane allowing gas to enter the floating air columns from the air inlet channel without reverse flow, characterized in that: It also includes an anti-torsion plate, which is a hard plate, and the inflatable layer is fixed on the anti-torsion plate.
2. The air column raft according to claim 1, characterized in that: A sealing point is provided on the vertical sealing line, and the sealing point connects the inflation layer and the anti-torsion plate.
3. The air column raft according to claim 2, characterized in that: The sealing points are distributed at intervals between the vertical sealing lines.
4. The air column raft according to claim 3, characterized in that: The anti-torsion plate is provided with a connecting protrusion, and the sealing point is fixed on the connecting protrusion.
5. The air column raft according to claim 4, characterized in that: The floating air column includes an upper film and a lower film. The lower film is completely covered and fixed on the anti-torsion plate. The upper film is sealed to the lower film through a vertical sealing line to form a floating air column.
6. The air column raft according to claim 5, characterized in that: The width of the upper film material of a single floating air column is greater than the width of the lower film material.
7. The air column raft according to claim 6, characterized in that: The lower film is fixed on the anti-torsion plate in a gluing manner.
8. The air column raft according to any one of claims 1 to 7, characterized in that: The anti-torsion plate is made of polyoxymethylene.
9. The air column raft according to claim 8, characterized in that: The side of the torsion-resistant plate away from the air-filled layer is provided with anti-slip texture.
10. The air column raft according to claim 9, characterized in that: The thickness of the anti-torsion plate is at least 8 mm.