Snowfield inflatable stretcher

Abstract

A snowfield inflatable stretcher is characterized in that a basic supporting frame is formed by an inflatable frame and an inflatable tube, then bottom cloth is fixed to the bottom of the inflatable frame and the bottom of the inflatable tube, the inflatable frame and the inflatable tube are reinforced in the transverse direction and the longitudinal direction through the bottom cloth, the bottom cloth can isolate foreign matter impacting the inflatable frame and the inflatable tube, and the inflatable frame and the inflatable tube are prevented from being directly impacted and abraded; therefore, the service life of the inflation frame and the inflation pipe is effectively prolonged. In addition, the rubber base is arranged on the base cloth, the friction plate is installed on the rubber base, the friction force of dragging is reduced through the friction plate, direct friction between the inflation frame, the inflation pipe and the base cloth and the ground is avoided, and therefore the effect similar to a sled is achieved. Meanwhile, the friction plates are made of hard, wear-resistant and low-friction-coefficient materials, the use cost can be greatly reduced by combining the replaceable design, and the friction plates are separated through the spaced rubber bases, so that the inflatable stretcher can be folded, the size cannot be obviously increased after the inflatable stretcher is folded, and the advantages that the inflatable stretcher is small in size and portable are effectively kept.

Description

Technical Field

[0001] This utility model relates to stretchers, and more particularly to an inflatable snow stretcher. Background Technology

[0002] Stretchers are used for the emergency transport of patients who are unable to walk or walk on their own. Currently, simple stretchers are commonly used; they are foldable and can be quickly unfolded for use, making them convenient. However, their folded size and weight are still relatively large. Therefore, inflatable stretchers are mostly used in outdoor rescues. These stretchers are inflated with air, using the internal gas to support the entire stretcher. These stretchers are lighter and smaller when folded, but the inflation amount needs to be carefully controlled. Too much air can cause them to burst, while too little air provides insufficient support. Currently, the inflation amount is determined based on experience. Furthermore, in icy or snowy conditions, the slippery surface makes it very difficult for two people to carry the stretcher, increasing the risk of falls and secondary injuries to the patient. Research suggests that dragging the stretcher in icy or snowy conditions is a more reasonable method, but current stretchers and inflatable stretchers do not have this capability. In particular, adding a sliding surface to an inflatable stretcher affects its folding mechanism, increasing its overall size, and dragging it on the ground can easily cause it to wear out.

[0003] The current technical problem to be solved is how to enable snow dragging on an inflatable stretcher without affecting its folded volume, while increasing its strength during dragging. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a snow inflatable stretcher that has the function of being dragged on snow and is not easily damaged during dragging.

[0005] To achieve the above objectives, this utility model provides a snow inflatable stretcher, including an inflatable frame and inflatable tubes. There are multiple inflatable tubes installed at the bottom inside the inflatable frame, and the interior of the inflatable tubes is connected to the interior of the inflatable frame.

[0006] The bottom of the inflatable frame and inflatable tube is fixed with a base cloth, and a rubber seat is also fixed on the base cloth. The rubber seat has multiple rubber seat grooves along its length. The inner ends of the rubber seat grooves are respectively provided with locking grooves. The rubber seat is made of wear-resistant and elastic material. Friction pads are engaged and installed in the rubber seat grooves.

[0007] As a further improvement of this utility model, a locking block is provided at each end of the friction plate, and the locking block is inserted into the locking groove to fix the friction plate in the rubber seat groove; there is a gap between the two rubber seat grooves.

[0008] As a further improvement of this utility model, the friction plate is made of a wear-resistant material with a low coefficient of friction, and there are two rubber seats.

[0009] As a further improvement of this utility model, an air valve is also installed on the inflation frame. The air valve is internally connected to the interior of the inflation frame, and a protective cover is installed on the end of the air valve to protect the air valve.

[0010] As a further improvement of this utility model, the bottom fabric is provided with end fabric and side fabric respectively. The end fabric is located at both ends of the inflatable frame and is provided with end fabric handles. The end fabric handles are used to facilitate the user to lift the entire stretcher. The side fabric is located on both sides of the inflatable frame and is provided with side fabric handles. The side fabric handles are used to facilitate the user to lift the entire stretcher.

[0011] As a further improvement of this utility model, a tube sleeve is also provided on the side handle. The tube sleeve is used to facilitate the passage of a tube or rod, and then the stretcher is lifted by the tube or rod.

[0012] As a further improvement of this utility model, the side fabric on one side is also assembled and fixed to one end of the strap, and the other end of the strap is fixed to the side fabric on the other side by a tear-off buckle.

[0013] As a further improvement of this utility model, the base fabric is made of wear-resistant and high-strength fabric.

[0014] As a further improvement of this utility model, the inflation frame is also equipped with a pressure gauge, which includes a dial, a gauge tube, and a compression bladder. The inflation frame is provided with a sealing tube, one end of which is fixed to the dial. The dial has a connecting channel and an indicating channel inside. The two ends of the indicating channel are respectively connected to the indicating channel and the inside of the gauge tube. A fixed plug and a movable plug are respectively installed on both sides of the connection between the indicating channel and the connecting channel. The fixed plug is fixed in the indicating channel and seals the indicating channel. The movable plug is slidably and sealed in the indicating channel. A ring spring is also installed in the indicating channel. The two ends of the ring spring are respectively pressed against the movable plug and the fixed plug. The ring spring applies a spring force to the movable plug to prevent it from sliding along the indicating channel.

[0015] The gauge tube is sealed and assembled with the sealing tube, and the inside of the gauge tube is sealed and assembled with the compression bladder tube. The compression bladder tube is set on the compression bladder. The inside of the compression bladder is hollow and elastic. A spring is installed inside the compression bladder to prevent the two ends of the compression bladder from approaching each other. The inside of the compression bladder is filled with gas or liquid.

[0016] As a further improvement of this utility model, the dial is made of transparent material and has an indicator ring with scale markings.

[0017] The beneficial effects of this utility model are:

[0018] This invention uses an inflatable frame and inflatable tubes to form a basic support framework. A base fabric is then fixed to the bottom of the frame and tubes, reinforcing them horizontally and vertically. The base fabric also isolates foreign objects from impacting the frame and tubes, preventing direct impact and wear, thus effectively extending their lifespan. Additionally, rubber seats are installed on the base fabric, and friction pads are mounted on these seats. These friction pads reduce dragging friction and prevent direct friction between the frame, tubes, and base fabric and the ground, creating a sled-like effect that greatly facilitates dragging and reduces effort. The friction pads are made of a hard, wear-resistant, low-friction material, and their replaceable design significantly reduces operating costs. The friction pads are separated by spaced rubber seats, allowing for folding without significantly increasing the size after folding, effectively maintaining the inflatable stretcher's compact and portable advantages.

[0019] This invention also redesigns the pressure gauge based on actual conditions, using the contraction of the compression bladder to push the movable block to slide for flexible indication. This method can effectively amplify the indication of pressure changes, so that even when the pressure inside the inflatable frame is not high, it can still provide a relatively accurate or approximate pressure indication. This ensures that the pressure meets the requirements for use while avoiding damage to the stretcher or safety hazards caused by excessively high pressure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

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

[0023] Figure 4 This is a schematic diagram of the structure of this utility model. Figure 4 ;

[0024] Figure 5 This is a schematic diagram of the structure of this utility model. Figure 5 (The inflatable frame 110 is separated from the bottom fabric 200).

[0025] Figure 6 This is a schematic diagram of the structure of this utility model. Figure 6 (The inflatable frame 110 is separated from the bottom fabric 200).

[0026] Figure 7 This is a cross-sectional view of the present invention located at the center plane of one of the straps 240;

[0027] Figure 8This is a cross-sectional view of the central plane of one of the air tubes 120 of this utility model;

[0028] Figure 9 yes Figure 8 Enlarged view of point A in the middle;

[0029] Figure 10 This is a structural diagram of a barometer 300. Figure 1 ;

[0030] Figure 11 This is a structural diagram of a barometer 300. Figure 2 ;

[0031] Figure 12 This is a cross-sectional view of the barometer 300 located at the center plane of the axis of the indicating channel 312;

[0032] Figure 13 This is a cross-sectional view of the barometer 300 located at the center plane of the axis of the indicator bladder 350. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0034] See Figures 1-13 This embodiment of the snow inflatable stretcher includes an inflatable frame 110 and inflatable tubes 120. Multiple inflatable tubes 120 are installed at the bottom inner side of the inflatable frame 110, and the interior of each inflatable tube 120 communicates with the interior of the inflatable frame 110. In this embodiment, the inflatable frame 110 and inflatable tubes 120 are integrally formed and hollow inside. When not in use, the internal gas is released, allowing it to be folded into a smaller volume. When in use, it can be directly inflated. The inflatable tube 120 has a hollow inflatable cavity 121 inside.

[0035] The inflatable frame 110 is also equipped with an air valve 130 and a pressure gauge 300. The air valve 130 is internally connected to the interior of the inflatable frame 110, and a protective cover 131 is installed on the end of the air valve 130. The protective cover 131 protects the air valve 130 and prevents foreign objects from entering the air valve 130. In this embodiment, the air valve 130 can be directly adopted from existing inflatable mattresses, tents, or air mattresses. Theoretically, as long as it can inflate the inflatable frame 110 and open the opening to allow the gas inside the inflatable frame 110 to be released, it is sufficient.

[0036] A base fabric 200 is fixedly installed at the bottom of the inflatable frame 110 and the inflation tube 120. End fabrics 210 and side fabrics 220 are respectively provided on the base fabric 200. The end fabrics 210 are located at both ends of the inflatable frame 110 and are equipped with end fabric handles 211, which facilitate the user in lifting the entire stretcher. The side fabrics 220 are located on both sides of the inflatable frame 110 and are equipped with side fabric handles 221, which also facilitate the user in lifting the entire stretcher. Tube sleeves 222 are also provided on the side fabric handles 221, which facilitate the passage of tubes or rods for lifting the stretcher.

[0037] A storage bag 230 is also fixed to the side fabric 220. The opening of the storage bag 230 is fixed to the side fabric 220 by tear-off fasteners. When in use, the opening of the storage bag 230 can be opened and some medical supplies, first aid supplies, tow ropes, etc. can be placed inside the storage bag 230. When in use, the tow rope can be connected to the end fabric handle 211 at one end, and then the entire stretcher can be slid by pulling the tow rope.

[0038] The side fabric 220 on one side is also assembled and fixed to one end of the strap 240, and the other end of the strap 240 is fixed to the side fabric 220 on the other side by a tear-off fastener. In use, the patient is tightly secured to the stretcher by the strap.

[0039] In this embodiment, a rough surface can be provided on the side fabric 220, and hook surfaces can be provided at the openings of the strap 240 and the storage bag 230, thereby achieving tear-off fastening and fixation.

[0040] The base fabric 200 is made of wear-resistant, high-strength fabric, such as warp-knitted composite reinforced anti-crack fabric or Oxford cloth. On one hand, the base fabric 200 prevents foreign objects at the bottom from directly scratching the inflatable frame 110 and inflatable tube 120, thus preventing direct wear and damage and effectively improving their lifespan. On the other hand, the base fabric 200 connects the inflatable frame 110 and inflatable tube 120, increasing their strength in both the lateral and longitudinal directions. Simultaneously, the base fabric 200 is flexible, allowing for easy folding while minimizing its impact on the overall weight. In this embodiment, the bottom surfaces of the inflatable frame 110 and inflatable tube 120 are fixed to the base fabric 200, effectively utilizing the base fabric 200 to support the inflatable frame 110 and inflatable tube 120.

[0041] A rubber seat 250 is also fixed on the base fabric 200. The rubber seat 250 has multiple rubber seat grooves 251 along its length. Each inner end of the rubber seat groove 251 has a retaining groove 252. The rubber seat 250 is made of a wear-resistant and elastic material, such as rubber or silicone. A friction plate 410 is fitted into each rubber seat groove 251. Each end of the friction plate 410 has a retaining block 141, which engages with the retaining groove 252 to fix the friction plate 410 within the rubber seat groove 251. The friction plate 410 is made of a wear-resistant, low-friction coefficient material, such as aluminum alloy, Teflon, or ABS plastic. There is a gap of at least 5 cm between two rubber seat grooves 251, allowing the friction plates 410 to be installed spaced apart on the rubber seat 250. This design provides rigid support for the friction plate 410, while still allowing it to be bent at the connection point between the two rubber seat grooves 251, facilitating folding and storage.

[0042] Preferably, there are two rubber seats 250, forming a sled-like structure for easy dragging. The rubber seats 250 and friction pads 410 raise the bottom fabric 200 a certain distance from the ground, thereby preventing particles on the ground from directly impacting the bottom fabric 200, thus improving the lifespan of the bottom fabric 200. At the same time, it also reduces the friction between the entire stretcher and the ground, thereby reducing the power required for dragging.

[0043] The rubber seat 250 is elastic, allowing for easy installation of the friction plate 410. First, the locking block 141 at one end of the friction plate 410 is inserted into the corresponding locking slot 252. Then, the side wall of the rubber seat groove 251 at the other end is pulled to insert the locking block 141 into the groove. Releasing the side wall of the groove 251 allows the locking slot 252 at this end to engage with the locking block 141 at the other end, completing the installation of the friction plate 410. Removal is also straightforward; simply pull open the side wall of the rubber seat groove 251 to remove one end of the friction plate 410, facilitating its removal. This design greatly facilitates the disassembly and replacement of the friction plate 410, extending the overall lifespan of the stretcher by replacing the friction plate 410 during use. Furthermore, the friction plate 410 is securely fixed within the rubber seat groove 251 and through the engagement of the locking slot 252 and the locking block 141, preventing it from falling out during use and affecting its functionality.

[0044] In some embodiments, the friction plate 410 is also installed at a position corresponding to the end fabric 210, so that the friction plate 410 at the other end can provide support when one end is lifted and dragged.

[0045] The pressure gauge 300 is used to detect the air pressure inside the inflation frame 110, thereby determining whether the inflation pressure meets the usage requirements. The pressure gauge 300 includes a dial 310, a gauge tube 320, and a compression bladder 350. A sealing tube 140 is provided on the inflation frame 110. One end of the gauge tube 320 is fixed to the dial 310. The dial 310 has a connecting channel 311 and an indicating channel 312 inside. The two ends of the indicating channel 312 are respectively connected to the inside of the indicating channel 312 and the gauge tube 320. A fixed plug 331 and a movable plug 332 are respectively installed on both sides of the connection between the indicating channel 312 and the connecting channel 311. The fixed plug 331 is fixed in the indicating channel 312 and seals the indicating channel 312. The movable plug 332 is slidably and sealed in the indicating channel 312. A ring spring 340 is also installed in the indicating channel 312. The two ends of the ring spring 340 are pressed against the movable plug 332 and the fixed plug 331 respectively. The ring spring 340 applies a spring force to the movable plug 332 to prevent it from sliding along the indicating channel 312.

[0046] The dial 310 is made of transparent material and has an indicator ring 370 with a scale. The displacement of the movable plug can be determined by comparing it with the scale, and then converted into the air pressure inside the inflation frame 110.

[0047] The gauge tube 320 is sealed and assembled with the sealing tube 140. The inside of the gauge tube 320 is sealed and assembled with the compression bladder tube 351. The compression bladder tube 351 is disposed on the compression bladder 350. The compression bladder 350 is hollow and elastic. A spring 360 is installed inside the compression bladder 350 to prevent the two ends of the compression bladder from approaching each other. The compression bladder 350 is filled with gas or antifreeze.

[0048] During use, as the air pressure inside the inflation frame 110 increases, the air pressure compresses the compression bladder 350, causing it to shrink. Gas or liquid (such as antifreeze) inside the compression bladder enters the indicator channel 312 through the connecting channel 311 under this compression, pushing the movable plug 332 to move against the elastic force of the ring spring 340. The user can roughly judge the air pressure inside the inflation frame 110 by observing the relationship between the movable plug and the scale, thus allowing for relatively accurate control of the inflation pressure and ensuring that the pressure is sufficient for use without being excessive. When the air pressure inside the inflation frame 110 subsequently decreases, the compression bladder 350 resumes its expansion, with the spring 360 assisting in this recovery. Simultaneously, the ring spring also causes the movable plug to reset, ready for the next use.

[0049] The reason for proposing a new barometer design in this embodiment is that current mechanical barometers are difficult to use in environments with low air pressure. The design of using a squeeze bladder 350 to be squeezed by air pressure and drive the movable plug can effectively solve this problem, and it is more sensitive and also has a lower cost.

[0050] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0051] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. Snow-covered inflatable stretcher, characterized by: It includes an inflatable frame and inflatable tubes, wherein there are multiple inflatable tubes installed at the bottom inside the inflatable frame, and the interior of the inflatable tubes is connected to the interior of the inflatable frame. The bottom of the inflatable frame and inflatable tube is fixed with a base cloth, and a rubber seat is also fixed on the base cloth. The rubber seat has multiple rubber seat grooves along its length. The inner ends of the rubber seat grooves are respectively provided with locking grooves. The rubber seat is made of wear-resistant and elastic material. Friction pads are engaged and installed in the rubber seat grooves.

2. The snow-inflatable stretcher as described in claim 1, characterized in that: The friction plate has a locking block at each end, which is inserted into the locking groove to fix the friction plate in the rubber seat groove; there is a gap between the two rubber seat grooves.

3. The snow-inflatable stretcher as described in claim 1 or 2, characterized in that: The friction pad is made of a wear-resistant, low-friction coefficient material, and there are two rubber bases.

4. The snow-inflatable stretcher as described in claim 1, characterized in that: The inflation frame is also equipped with an air valve, the interior of which is connected to the interior of the inflation frame, and a protective cover is installed on the end of the air valve to protect the air valve.

5. The snow-inflatable stretcher as described in claim 1 or 2, characterized in that: The bottom fabric is provided with end fabric and side fabric respectively. The end fabric is located at both ends of the inflatable frame and is provided with end fabric handles. The end fabric handles are used to facilitate the user to lift the entire stretcher. The side fabric is located on both sides of the inflatable frame and is provided with side fabric handles. The side fabric handles are used to facilitate the user to lift the entire stretcher.

6. The snow-inflatable stretcher as described in claim 5, characterized in that: The side handle is also equipped with a tube sleeve, which is used to facilitate the passage of a tube or rod, and then the stretcher is lifted through the tube or rod.

7. The snow-inflatable stretcher as described in claim 1, characterized in that: The side fabric on one side is also assembled and fixed to one end of the strap, and the other end of the strap is fixed to the side fabric on the other side by a tear-off buckle.

8. The snow-inflatable stretcher as described in claim 1, characterized in that: The base fabric is made of wear-resistant, high-strength material.

9. The snow-covered inflatable stretcher as described in any one of claims 1, 2, 4, 6, 7, and 8, characterized in that: The inflation frame is also equipped with a pressure gauge, which includes a dial, a gauge tube, and a compression bladder. The inflation frame is provided with a sealing tube, one end of which is fixed to the dial. The dial has a connecting channel and an indicating channel inside. The two ends of the indicating channel are connected to the indicating channel and the inside of the gauge tube, respectively. A fixed plug and a movable plug are respectively installed on both sides of the connection between the indicating channel and the connecting channel. The fixed plug is fixed in the indicating channel and seals the indicating channel. The movable plug is slidably and sealed in the indicating channel. A ring spring is also installed in the indicating channel. The two ends of the ring spring are pressed against the movable plug and the fixed plug, respectively. The ring spring applies a spring force to the movable plug to prevent it from sliding along the indicating channel. The gauge tube is sealed and assembled with the sealing tube, and the inside of the gauge tube is sealed and assembled with the compression bladder tube. The compression bladder tube is set on the compression bladder. The inside of the compression bladder is hollow and elastic. A spring is installed inside the compression bladder to prevent the two ends of the compression bladder from approaching each other. The inside of the compression bladder is filled with gas or liquid.

10. The snow-inflatable stretcher as described in claim 9, characterized in that: The dial is made of transparent material and has an indicator ring with graduations.

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