A field folding emergency stretcher

Abstract

The application discloses a field folding first-aid stretcher, characterized in that the field folding first-aid stretcher comprises a backpack and a stretcher, a protruding block is arranged on the top of the backpack, a supporting rod is arranged on the protruding block, and nuts are threadedly connected to the two sides of the supporting rod; the stretcher comprises a supporting frame rotatably installed on the supporting rod, an extension frame is slidably installed in the supporting frame, a rolling frame is slidably installed below the extension frame, a limiting rod is rotatably installed at the bottom of the supporting frame, a sliding assembly is rotatably installed at one end of the limiting rod, the sliding assembly is slidably installed on the backpack, folding pads are arranged on the supporting frame, the extension frame and the rolling frame, a limiting assembly is arranged at the middle of the extension frame, and buckle belts are arranged on the two sides of the supporting frame and the rolling frame; the field folding first-aid stretcher can be converted into a stretcher with different structures according to different terrains, so that the transfer mode of the wounded person is changed, and meanwhile, the stretcher can be folded, thereby being convenient to carry.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of first-aid stretchers, and particularly relates to a field folding first-aid stretcher. BACKGROUND

[0002] In traditional field medical rescue, the first-aid stretcher is an important rescue tool. The traditional first-aid stretcher usually adopts a fixed structure design. Although the structure is simple and convenient for production, there are certain deficiencies in actual use. For example, the traditional stretcher has a large volume and is inconvenient to carry. In addition, when used in a narrow space or complex terrain, it is difficult to quickly unfold and fold, which may delay the rescue time and affect the safety of the wounded. The traditional stretcher is usually lifted by two people. When there is a shortage of manpower, the transfer speed of the wounded will be reduced.

[0003] The prior art, for example, Chinese patent for invention with the announcement number CN202311303172, discloses a "single back folding stretcher", which comprises a main frame composed of a side support and a bottom rod, and a vice frame composed of a stretcher. The side support, the bottom rod and the hinge frame can be folded to reduce the overall size of the stretcher, so as to facilitate single carrying. When the stretcher is unfolded, the hinge frame is adjusted based on the position of the side support, and the side support is locked by the clamping rod, and the bottom rod is locked by the hollow stud, so as to provide comfortable, safe and reliable stretcher transfer conditions for the wounded. However, this structure has defects. That is, this structure is only suitable for dragging the wounded on flat roads, but it is difficult to move forward on rugged roads such as mountains, and it is difficult to use the device in waterways and other places.

[0004] In addition, different transfer methods are used for different terrains. For example, flat areas are suitable for flat lying stretchers, complex terrains such as gravel are suitable for back carrying stretchers, and uphill and downhill terrains are suitable for hand lifting stretchers. SUMMARY

[0005] The present application aims to provide a stretcher that can be converted into different structures according to different terrains, so as to change the transfer method of the wounded, and also can fold the stretcher for convenient carrying.

[0006] The foldable first aid stretcher of the present invention is characterized in that it comprises a backpack and a stretcher, the top of the backpack is provided with a protrusion, the protrusion is provided with a support rod, and nuts are threadedly connected to the support rod at both sides; the stretcher comprises a support frame rotatably mounted on the support rod, the extension frame is slidably mounted inside the support frame, the rolling frame is slidably mounted under the extension frame, and a limiting rod is rotatably mounted on the bottom of the support frame, one end of the limiting rod is rotatably mounted on a sliding assembly, the sliding assembly is slidably mounted on the backpack, a folding pad is provided on the support frame, a limiting assembly is provided in the middle of the extension frame, and buckles are provided on both sides of the support frame and the rolling frame; the sliding assembly comprises a slider slidably mounted in a No. 1 slide groove, the upper part of the slider is provided with a hinge seat, the hinge seat is hinged to one end of the limit rod, the middle of the slider is provided with a No. 2 slide groove, and the two ends of the slider are The cam is connected to the other end of the fixing block by a spring.

[0007] Preferably, the backpack is made of hard material, a No. 1 slide groove is provided in the middle of the rear end of the backpack, a plurality of limiting holes are provided at equal distances on both sides of the No. 1 slide groove, and the No. 1 slide groove is adapted to the slider.

[0008] Preferably, the support frame is a hollow carbon fiber tube with an "I"-shaped structure, and limiting rings are provided on both sides of the front end of the support frame. The limiting rings are adapted to the support rod, and hand guards are provided on both sides of the front end of the support frame. The middle part of the support frame is rotatably connected to one end of the limiting rod, and the height of the other end of the limiting rod is below the height of the middle part of the support frame, and a plurality of support holes are provided in an array on the outside of the support frame.

[0009] Preferably, the rolling frame is a hollow carbon fiber tube with an "I"-shaped structure, and handrails are provided on both sides of the rear end of the rolling frame. The handrails are provided with hand guards, and rollers are provided on one side of the handrails. A plurality of support holes are opened on the outside of the rolling frame.

[0010] Preferably, the folding pad is a corrugated elastic pad, which is arranged above the extension frame. Both ends of the folding pad are fixedly connected to the rear end of the support frame and the front end of the rolling frame respectively. Airbag cushions are arranged at both ends of the folding pad, and the airbag cushions are filled with helium.

[0011] Compared with the related art, the field folding emergency stretcher provided by the present invention has the following beneficial effects:

[0012] 1. The present invention provides a stretcher and uses a sliding assembly and a limit assembly to control the change of the stretcher's structure, so that the stretcher can be switched to different structures in different environments to conveniently transfer the injured;

[0013] 2. The present invention provides an airbag, which takes advantage of its softness and the fact that it can provide greater buoyancy on the water surface, so that the escort personnel can transfer the injured person by water.

[0014] 3. The present invention sets a limiting component and utilizes limiting teeth between the fixing ring and the fixing clamp to press the two sides of the elastic fixing clamp to close while the cam rotates. The closed fixing clamp fixes the fixing ring through the limiting teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the working of the stretcher rotation of the present invention;

[0018] Figure 3 It is a schematic structural diagram of a stretcher of the present invention;

[0019] Figure 4 is a cross-sectional view of a backpack of the present invention;

[0020] Figure 5 is a cross-sectional view of the sliding assembly of the present invention;

[0021] Figure 6 1 is a schematic structural diagram of the limit assembly of the present invention;

[0022] Figure 7 It is a schematic diagram of the connection relationship between the stop rod and the stop block of the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Backpack; 11. Bump; 12. Support rod; 13. Nut; 14. Slide No. 1; 15. Limiting hole; 2. Stretcher; 21. Support frame; 211. Limiting ring; 212. Hand guard; 22. Extension frame; 23. Rolling frame; 231. Armrest; 232. Roller; 24. Limiting rod; 25. Sliding assembly; 251. Slider; 252. Articulated seat; 253. Slide No. 2; 254. Slide No. 3; 255. Stop block; 2551. Stop groove; 2552. Limiting block; 256. Spring; 257. Stop rod; 258. Sliding pin; 26. Folding pad; 261. Airbag; 27. Limiting assembly; 271. Fixing ring; 272. Limiting tooth; 273. Fixing clip; 274. Rotating shaft; 275. Cam; 28. Buckle. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See Figures 1 to 7 As shown, a field folding emergency stretcher 2 is characterized in that it includes a backpack 1 and a stretcher 2, a protrusion 11 is provided on the top of the backpack 1, a support rod 12 is provided on the protrusion 11, and nuts 13 are threadedly connected on both sides of the support rod 12; the stretcher 2 includes a support frame 21 rotatably mounted on the support rod 12, an extension frame 22 is slidably mounted inside the support frame 21, a rolling frame 23 is slidably mounted below the extension frame 22, a limiting rod 24 is rotatably mounted on the bottom of the support frame 21, one end of the limiting rod 24 is rotatably mounted with a sliding assembly 25, the sliding assembly 25 is slidably mounted on the backpack 1, a folding pad 26 is provided on the support frame 21, the extension frame 22 and the rolling frame 23, a limiting assembly 27 is provided in the middle of the extension frame 22, and buckles 28 are provided on both sides of the support frame 21 and the rolling frame 23. The stretcher 2 is turned by the limiting assembly 27 and fixed to the backpack 1 by the sliding assembly 25 and the nut 13, thereby facilitating the carrying of the stretcher 2. The stretcher 2 can be rotated by the action of the sliding assembly 25, the limiting rod 24 and the limiting assembly 27, so that the stretcher 2 can change its structure, thereby performing different types of transfers according to the patient's condition and the environment.

[0028] The sliding assembly 25 includes a slider slidably mounted in the No. 1 slide 14. The slider 251 is provided with a hinge seat 252 on the upper portion, which is hinged to one end of the limit rod 24. The slider 251 is provided with a No. 2 slide 253 in the middle portion. Two No. 3 slides 254 are provided on both sides of the slider 251 perpendicular to the No. 2 slide 253 and in opposite directions. A stop block 255 is slidably mounted in the No. 3 slide 254. A spring 256 is provided on one side of the stop block 255. A stop rod 257 is slidably mounted in the No. 2 slide 253. The end of the stop rod 257 is slidably connected to the stop block 255 via a sliding pin 258. The stop block 255 is pushed by the spring 256 so that the stop block 255 fixes the slider 251 through the No. 1 slide 14. The movement of the stop rod 257 can drive the slider 251 to move, thereby releasing the restriction on the slider 251 and allowing the slider 251 to slide.

[0029] The stop block 255 is provided with a 45° inclined stop groove 2551, which is adapted to fit the sliding pin 258. A limit block 2552 is provided at one end of the stop block 255, which is adapted to fit the limit hole 15. The 45° stop groove 2551 allows the sliding pin 258 to slide within the stop groove 2551. The stop rod 257 then retracts the stop block 255 into the slider 251, allowing the limit block 2552 to disengage from the limit hole 15, thereby releasing the restriction on the slider 251.

[0030] The limiting assembly 27 includes a fixing ring 271 eccentrically mounted on the upper end of the extension frame 22. A plurality of limiting teeth 272 are disposed on both sides of the fixing ring 271. An elastic fixing clip 273 is eccentrically mounted on the lower end of the extension frame 22. The fixing ring 271 is rotatably mounted within the fixing clip 273. The fixing clip 273 is internally provided with a plurality of limiting teeth 272. A rotating shaft 274 penetrates the fixing ring 271 and the fixing clip 273. One end of the rotating shaft 274 is fixedly mounted on one side of the fixing clip 273. A cam 275 is eccentrically hinged on the other end of the rotating shaft 274. The cam 275 is slidably connected to the other side of the fixing clip 273. The fixing ring 271 and the fixing clip 273 eccentrically mounted on the extension frame 22 allow the extension frame 22 to fit together during rotation. When the cam 275 rotates, the elastic fixing clip 273 drives the fixing clip 273 to close, thereby securing the fixing ring 271 via the limiting teeth 272, thereby securing the extension frame 22.

[0031] The backpack 1 is made of a hard material. A first chute 14 is defined in the middle of the rear end of the backpack 1. Multiple stop holes 15 are equidistantly spaced on either side of the first chute 14. The first chute 14 is adapted to fit within the slider 251. The hard material stabilizes the stretcher 2 when carried on the backpack 1. The first chute 14 and the stop holes 15 restrict the movement of the sliding assembly 25 within the first chute 14, thereby limiting the deflection of the stretcher 2.

[0032] The support frame 21 is a hollow carbon fiber tube with an "I"-shaped structure. Limiting rings 211 are provided on both sides of the front end of the support frame 21. These limiting rings 211 are compatible with the support rod 12. Handguards 212 are provided on both sides of the front end of the support frame 21. The middle portion of the support frame 21 is rotatably connected to one end of a limiting rod 24, with the other end of the limiting rod 24 positioned below the middle portion of the support frame 21. A plurality of supporting holes are arranged in an array on the outer side of the support frame 21. The "I"-shaped structure makes the support frame 21 more stable when carrying a patient. The limiting rings 211 are used to secure the stretcher 2 to the backpack 1 and also provide a certain deflection angle for the stretcher 2. The other end of the limiting rod 24 is positioned below the middle portion of the support frame 21. This allows the lower portion of the backpack 1 to bear a portion of the patient's weight when carrying the patient, thereby increasing the backpack's carrying capacity.

[0033] The rolling frame 23 is a hollow carbon fiber tube in an "I" shape. Handrails 231 are located on either side of the rear end of the rolling frame 23. These handrails 231 are equipped with hand guards 212. Rollers 232 are located on one side of the handrails 231. Multiple support holes are located on the outside of the rolling frame 23. The hollow carbon fiber tube provides sufficient support while remaining lightweight, reducing the burden on the carrier. The rollers 232 also alleviate the burden on the carrier when dragging the injured person.

[0034] The folding pad 26 is a corrugated elastic pad. It is positioned above the extension frame 22, with its ends fixedly connected to the rear end of the support frame 21 and the front end of the rolling frame 23. Airbags 261 are installed at each end of the folding pad 26, each filled with helium. The corrugated elastic pad allows the folding pad 26 to expand when extending between the extension frame 22 and the support frame 21, and between the extension frame 22 and the rolling frame 23. Furthermore, the provision of the airbags 261 allows the stretcher 2 to be moved by water while carrying a patient, thereby increasing its versatility.

[0035] Example 2

[0036] The connection relationship between the extension frame 22 of the present invention and the support frame 21 and the rolling frame 23 is the existing telescopic rod structure;

[0037] The carbon fiber tubes used in the support frame 21 and the rolling frame 23 of the present invention have a diameter and thickness that can bear the weight of a human body;

[0038] The limiting teeth 272 of the present invention can cooperate with each other, and after the limiting teeth 272 cooperate, the fixing ring 271 and the fixing clamp 273 are locked, which can resist the weight of the human body;

[0039] The air bag 261 of the present invention can provide buoyancy capable of supporting the weight of a human body in water.

[0040] Example 3

[0041] Working principle: When there is an injured person in the wild, the user moves the folded stretcher 2 to the scene through the backpack 1, and selects different stretcher 2 structures to transfer the patient according to the environment and the patient's injuries;

[0042] When a patient is injured in a flat area, the user uses the limiting assembly 27 to move the stretcher 2 from the folded state to the unfolded state. When the limiting assembly 27 is in operation, the user rotates the eccentric cam 275 to unfold the elastic fixing clip 273, thereby separating the limiting teeth 272 from each other, allowing the fixing clip 273 to release the restriction of the fixing ring 271. When the limiting assemblies 27 on both sides are opened simultaneously, the extension frame 22 can be rotated, thereby changing the structure of the stretcher 2.

[0043] When the stretcher 2 is unfolded, the user presses the stop rod 257 at the same time, causing the stop rod 257 to move toward the inside of the slider 251. The stop rod 257 moves in the stop groove 2551 through the sliding pin 258, causing the stop block 255 to retract toward the inside of the slider 251, thereby separating the limit block 2552 from the limit hole 15, so that the restriction of the slider 251 is released, allowing the slider 251 to slide, and the limit rod 24 on the hinge seat 252 causes the stretcher 2 to rotate around the support rod 12, thereby changing the stretcher 2 from a vertical state to an inclined state, so that the injured person can lie on the stretcher 2. After the injured person lies on the stretcher 2, the buckle 28 is used to fix the injured person on the stretcher 2; when the user drags the injured person, the rollers 232 at the bottom of the rolling frame 23 can reduce the burden of the dragger during the process of dragging the injured person;

[0044] When the injured person is on a rough road with rocks or other rough surfaces, the user can use the limiting assembly 27 to change the stretcher 2 into a chair position, and then use the sliding assembly 25 and the limiting rod 24 to make the stretcher 2 in the chair position tilted. This allows the injured person to lie down when sitting on the stretcher 2, thereby tilting the patient's center of gravity and reducing the burden on the carrier. When the injured person sits on the stretcher 2, the buckle 28 can be used to fix the injured person.

[0045] When the injured person is in the environment such as the jungle, the user unfolds the stretcher 2 through the limiting assembly 27, and removes the nut 13, so that the stretcher 2 can be taken off from the supporting rod 12 through the limiting ring 211, so that the stretcher 2 is separated, so that the injured person can lie flat, thereby facilitating the progress in the jungle;

[0046] When the injured person is injured in the water area, the user unfolds the stretcher 2 through the limiting assembly 27, and takes the stretcher 2 off from the supporting rod 12, and uses the air bag 261 to make the stretcher 2 float on the water surface, which can reduce the burden of the user, and also can transfer the injured person in the water environment.

Claims

1. A foldable field emergency stretcher (2), characterized in that: The backpack (1) and the stretcher (2) are provided with a protrusion (11) on the top of the backpack (1), a support rod (12) is provided on the protrusion (11), and nuts (13) are threadedly connected on both sides of the support rod (12); the stretcher (2) comprises a support frame (21) rotatably mounted on the support rod (12), an extension frame (22) is slidably mounted inside the support frame (21), a rolling frame (23) is slidably mounted below the extension frame (22), a limiting rod (24) is rotatably mounted on the bottom of the support frame (21), a sliding assembly (25) is rotatably mounted on one end of the limiting rod (24), and the sliding assembly (25) is slidably mounted on the backpack (1); a folding pad (26) is provided on the support frame (21), the extension frame (22) and the rolling frame (23), a limiting assembly (27) is provided in the middle of the extension frame (22), and buckles (28) are provided on both sides of the support frame (21) and the rolling frame (23); The sliding assembly (25) includes a slider (251) slidably installed in the No. 1 slide groove (14), a hinge seat (252) is provided on the upper part of the slider (251), the hinge seat (252) is hinged to one end of the limit rod (24), a No. 2 slide groove (253) is provided in the middle part of the slider (251), two No. 3 slide grooves (254) in opposite directions are provided on both sides of the slider (251) perpendicular to the No. 2 slide groove (253), a stop block (255) is slidably installed in the No. 3 slide groove (254), a spring (256) is provided on one side of the stop block (255), a stop rod (257) is slidably installed in the No. 2 slide groove (253), and the end of the stop rod (257) is slidably connected to the stop block (255) through a sliding pin (258); The stop block (255) is provided with a stop groove (2551) inclined at 45 degrees, the stop groove (2551) is adapted to the sliding pin (258), and a limit block (2552) is provided at one end of the stop block (255), the limit block (2552) is adapted to the limit hole (15); The limiting assembly (27) comprises a fixing ring (271) eccentrically arranged at the upper end of the extension frame (22), a plurality of limiting teeth (272) are arranged on both sides of the fixing ring (271), an elastic fixing clamp (273) is eccentrically arranged at the lower end of the extension frame (22), a fixing ring (271) is rotatably installed inside the fixing clamp (273), a plurality of limiting teeth (272) are arranged on the inner side of the fixing clamp (273), the fixing ring (271) and the fixing clamp (273) are penetrated by a rotating shaft (274), one end of the rotating shaft (274) is fixedly installed on one side of the fixing clamp (273), and the other end of the rotating shaft (274) is eccentrically hinged with a cam (275), and the cam (275) is slidably connected to the other side of the fixing clamp (273).

2. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The backpack (1) is made of a hard material. A No. 1 slide groove (14) is provided in the middle of the rear end of the backpack (1). A plurality of limiting holes (15) are provided at equal intervals on both sides of the No. 1 slide groove (14). The No. 1 slide groove (14) is adapted to the slider (251).

3. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The support frame (21) is a hollow carbon fiber tube with an "I"-shaped structure. Limiting rings (211) are provided on both sides of the front end of the support frame (21). The limiting rings (211) are adapted to the support rod (12). Hand guards (212) are provided on both sides of the front end of the support frame (21). The middle of the support frame (21) is rotatably connected to one end of the limiting rod (24), and the height of the other end of the limiting rod (24) is located below the height of the middle of the support frame (21). A plurality of supporting holes are arranged in an array on the outer side of the support frame (21).

4. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The rolling frame (23) is a hollow carbon fiber tube with an "I"-shaped structure. Handrails (231) are provided on both sides of the rear end of the rolling frame (23). A hand guard (212) is provided on the handrail (231). A roller (232) is provided on one side of the handrail (231). A plurality of support holes are provided on the outer side of the rolling frame (23).

5. A foldable field emergency stretcher (2) according to claim 1, characterized in that: The folding pad (26) is a corrugated elastic pad. The folding pad (26) is arranged above the extension frame (22). The two ends of the folding pad (26) are respectively fixedly connected to the rear end of the support frame (21) and the front end of the rolling frame (23). Airbags (261) are provided at both ends of the folding pad (26), and the airbags (261) are filled with helium.

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