A folding stretcher with electromagnetic shielding function

Abstract

This utility model relates to the field of stretcher technology and discloses a folding stretcher with electromagnetic shielding function, including a supporting shielding mechanism and two lifting rod mechanisms. The supporting shielding mechanism includes an uppermost contact layer, and an insulating layer is fixedly connected to the lower end of the contact layer. In this utility model, the outer shielding layer of the supporting shielding mechanism is a composite of a copper-nickel alloy mesh and an inner shielding layer of ferrite absorbing material, which can reflect high-frequency electromagnetic waves and absorb low-frequency magnetic fields. Grounding and current conduction are achieved through braided copper strip wires, silver nano-conductive sleeves, grounding terminals, and magnetic blocks, effectively preventing electromagnetic interference. The contact layer, insulating layer, and supporting layer are respectively made of flame-retardant aramid fiber cloth, epoxy resin coating, and carbon fiber substrate to ensure safety and strength. The lifting rod mechanism is foldable, the supporting legs and moving wheels facilitate movement, and the fixed crossbar enhances stability, meeting the needs of transporting the wounded and sick in complex electromagnetic environments.

Description

Technical Field

[0001] This utility model relates to the field of stretcher technology, and in particular to a folding stretcher with electromagnetic shielding function. Background Technology

[0002] A stretcher is a simple instrument used to transport the injured or sick. It typically consists of two long poles connected by a central board, canvas, or other connecting elements, and is usually rectangular in shape. It can be used for patient transport within hospitals and is also frequently used in emergency situations, such as natural disasters and accidents. It allows medical personnel or rescue workers to easily and safely transfer injured or sick individuals who cannot move on their own from dangerous or inaccessible locations to ambulances, hospitals, and other medical facilities. There are various types of stretchers, the most common being canvas stretchers, scoop stretchers, and vacuum stretchers. Different types are suitable for different injuries, illnesses, and transport environments.

[0003] The main drawback of existing portable stretchers for aircraft transport lies in the lack of systematic protection against electromagnetic interference. When using a defibrillator in the confined cabin of a helicopter, the stretcher lacks an electromagnetic shielding layer or grounding device, allowing high-energy electromagnetic pulses to directly interfere with sensitive electronic components such as flight control systems and navigation equipment. This lack of protection is particularly dangerous in the complex airborne electromagnetic environment, potentially causing communication interruptions, avionics system malfunctions, and other safety hazards. Existing products neither use conductive materials to cover critical components nor employ structural design to achieve directional dissipation of electromagnetic energy, making it difficult to meet the stringent electromagnetic compatibility requirements of aircraft.

[0004] Therefore, those skilled in the art have provided a folding stretcher with electromagnetic shielding function to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a folding stretcher with electromagnetic shielding function. This stretcher has electromagnetic shielding and conductivity, and is easy to fold, making it more convenient to use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a folding stretcher with electromagnetic shielding function, comprising a supporting shielding mechanism and two lifting rod mechanisms. The supporting shielding mechanism includes an uppermost contact layer, an insulating layer fixedly connected to the lower end of the contact layer, an outer shielding layer fixedly connected to the lower end of the insulating layer, an inner shielding layer fixedly connected to the lower end of the outer shielding layer, and a supporting layer fixedly connected to the lower end of the inner shielding layer. The lifting mechanism includes a hinged rod, with carbon fiber lifting rods hinged to both the front and rear ends of the hinged rod. Support legs are fixedly fitted onto the shafts of the two carbon fiber lifting rods away from the hinged rod. A silver nano-conductive rubber sleeve is fixedly fitted onto the middle of the shaft of the hinged rod. A grounding terminal is fixedly connected to the center of the lower end of the silver nano-conductive rubber sleeve. A magnetic block is fixedly connected to the lower end of the grounding terminal. A braided copper strip wire is connected between the silver nano-conductive rubber sleeve and the outer shielding layer.

[0007] Furthermore, handles are fixedly connected to opposite ends of both carbon fiber lifting rods.

[0008] Furthermore, both of the supporting legs are equipped with casters at their lower ends.

[0009] Furthermore, the two ends of the support shielding mechanism are movably sleeved on the carbon fiber lifting rod body, and fixed crossbars are fixedly installed between each pair of the four support legs in the lateral direction.

[0010] Furthermore, the contact layer is made of flame-retardant aramid fiber cloth, and the insulating layer is made of epoxy resin coating material.

[0011] Furthermore, the outer shielding layer is made of copper-nickel alloy mesh material, the inner shielding layer is made of ferrite absorbing material, and the support layer is made of carbon fiber substrate material.

[0012] This utility model has the following beneficial effects: This invention proposes a folding stretcher with electromagnetic shielding function. It employs a multi-layer shielding structure design, including a contact layer, an insulation layer, an outer shielding layer, and an inner shielding layer. Through a composite structure of copper-nickel alloy mesh and ferrite absorbing material, it achieves a dual shielding effect of high-frequency electromagnetic wave reflection and low-frequency magnetic field absorption, effectively preventing electromagnetic interference from affecting the flight control system and navigation equipment. Furthermore, electromagnetic energy is guided to a silver nano-conductive sleeve via braided copper wire, and then grounded and conducted to the aircraft via grounding terminals and magnetic blocks, further enhancing the electromagnetic shielding performance. In terms of material selection, the contact layer uses flame-retardant aramid fiber cloth, and the insulation layer... The stretcher features an epoxy resin coating for the first layer and a carbon fiber substrate for the support layer, ensuring high strength and lightweight characteristics while also providing excellent flame retardancy and insulation. Furthermore, the stretcher incorporates a folding design with articulated rods and carbon fiber lifting rods for easy storage and transport. Support legs and casters enhance mobility on flat surfaces, while fixed crossbars improve overall stability. Handles facilitate handling by transport personnel, and magnetic blocks provide quick grounding, improving operational efficiency. The overall design balances electromagnetic shielding, convenience, safety, and stability, making it particularly suitable for transporting patients in complex electromagnetic environments such as helicopters, and meeting the stringent electromagnetic compatibility requirements of aircraft. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the present utility model; Figure 2 This is a schematic diagram of the bottom surface of the present invention; Figure 3 This is a schematic diagram of the support and shielding mechanism of this utility model; Figure 4 This is a schematic diagram of the lifting mechanism of this utility model; Figure 5 This is a schematic diagram of the support and shielding mechanism of this utility model.

[0014] Legend: 1. Support and shielding mechanism; 2. Lifting rod mechanism; 3. Braided copper strip wire; 4. Fixed crossbar; 101. Contact layer; 102. Insulation layer; 103. Outer shielding layer; 104. Inner shielding layer; 105. Support layer; 201. Carbon fiber lifting rod; 202. Hinge rod; 203. Silver nano-conductive sleeve; 204. Support leg; 205. Handle; 206. Caster wheel; 207. Grounding terminal; 208. Magnetic block. Detailed Implementation

[0015] 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.

[0016] Reference Figures 1-5 An embodiment of this utility model is provided: a folding stretcher with electromagnetic shielding function, including a support shielding mechanism 1 and two lifting rod mechanisms 2. The support shielding mechanism 1 includes an uppermost contact layer 101, an insulating layer 102 is fixedly connected to the lower end of the contact layer 101, an outer shielding layer 103 is fixedly connected to the lower end of the insulating layer 102, an inner shielding layer 104 is fixedly connected to the lower end of the outer shielding layer 103, and a support layer 105 is fixedly connected to the lower end of the inner shielding layer 104. The lifting mechanism 2 includes a hinged rod 202, with carbon fiber lifting rods 201 hinged to both its front and rear ends. In this hinged design, the carbon fiber lifting rods 201 can only be bent downwards, not upwards, to prevent them from failing to lift. Handles 205 are fixedly connected to opposite ends of the two carbon fiber lifting rods 201. Support legs 204 are fixedly fitted onto the shafts of the two carbon fiber lifting rods 201 away from the hinged rod 202. The lower ends of the two support legs 204 are equipped with movable... The moving wheel 206 and the middle of the hinge rod 202 are fixedly fitted with a silver nano conductive rubber sleeve 203. A grounding terminal 207 is fixedly connected to the center of the lower end of the silver nano conductive rubber sleeve 203. A magnetic block 208 is fixedly connected to the lower end of the grounding terminal 207. A braided copper strip wire 3 is connected between the silver nano conductive rubber sleeve 203 and the outer shielding layer 103. The two ends of the support shielding mechanism 1 are movably fitted on the carbon fiber lifting rod 201. A fixed crossbar 4 is fixedly installed between each pair of the four support legs 204 in the lateral direction. The contact layer 101 is made of flame-retardant aramid fiber cloth, the insulation layer 102 is made of epoxy resin coating material, the outer shielding layer 103 is made of copper-nickel alloy mesh material, the inner shielding layer 104 is made of ferrite absorbing material, and the support layer 105 is made of carbon fiber substrate material.

[0017] Specifically, the supporting shielding mechanism 1 adopts a multi-layer structure design, including a contact layer 101, an insulating layer 102, an outer shielding layer 103, an inner shielding layer 104, and a support layer 105. The outer shielding layer 103 is made of a copper-nickel alloy mesh, and the inner shielding layer 104 is made of ferrite absorbing material. This composite structure can effectively reflect high-frequency electromagnetic waves and absorb low-frequency magnetic fields, achieving a dual shielding effect. Electromagnetic energy is guided to the silver nano-conductive sleeve 203 by braided copper strip wires 3, and then contacts the aircraft through the grounding terminal 207 and magnetic block 208 to achieve grounding and avoid electromagnetic interference affecting the flight control system and navigation equipment.

[0018] The contact layer 101 is made of flame-retardant aramid fiber cloth, possessing high strength and flame-retardant properties to ensure safety in emergency situations. The insulation layer 102 is made of epoxy resin coated material, providing excellent insulation and preventing current leakage. The support layer 105 is made of carbon fiber substrate material, featuring high strength and lightweight characteristics, making it easy to carry and handle. The hinged design of the hinged rod 202 and the carbon fiber lifting rod 201 allows the carbon fiber lifting rod 201 to bend downwards only, preventing situations where it cannot be lifted, while also facilitating folding and storage. The design of the support legs 204 and the casters 206 allows the stretcher to be moved easily on flat ground, reducing the burden on the handling personnel. The magnetic block design 208 allows the grounding terminal 207 to quickly contact the aircraft, improving operational efficiency.

[0019] Working principle: In use, each layer is fixed by stitching or pressing. When using the defibrillator in the confined cabin of a helicopter, the high-frequency electromagnetic waves pass through the contact layer 101 and the insulation layer 102, and are then shielded by the outer shielding layer 103 and the inner shielding layer 104. The composite structure of copper-nickel alloy mesh and ferrite absorbing material achieves a dual shielding effect of high-frequency electromagnetic wave reflection and low-frequency magnetic field absorption. The braided copper strip wire 3 connected by the copper-nickel alloy mesh is guided into the silver nano conductive sleeve 203, and finally contacts the aircraft through the grounding terminal 207 and the magnetic block 208 to achieve grounding and current conduction.

[0020] 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 folding stretcher with electromagnetic shielding function, comprising a supporting shielding mechanism (1) and two lifting rod mechanisms (2), characterized in that: The supporting shielding mechanism (1) includes an uppermost contact layer (101), an insulating layer (102) is fixedly connected to the lower end of the contact layer (101), an outer shielding layer (103) is fixedly connected to the lower end of the insulating layer (102), an inner shielding layer (104) is fixedly connected to the lower end of the outer shielding layer (103), and a support layer (105) is fixedly connected to the lower end of the inner shielding layer (104). The lifting mechanism (2) includes a hinged rod (202), with carbon fiber lifting rods (201) hinged at both the front and rear ends of the hinged rod (202). Support legs (204) are fixedly fitted on the rods of the two carbon fiber lifting rods (201) away from the hinged rod (202). A silver nano conductive rubber sleeve (203) is fixedly fitted in the middle of the rod body of the hinged rod (202). A grounding terminal (207) is fixedly connected at the center of the lower end of the silver nano conductive rubber sleeve (203). A magnetic block (208) is fixedly connected at the lower end of the grounding terminal (207). A braided copper strip wire (3) is connected between the silver nano conductive rubber sleeve (203) and the outer shielding layer (103).

2. A folding stretcher with electromagnetic shielding function according to claim 1, characterized in that: Each of the two carbon fiber lifting rods (201) has a handle (205) fixedly connected to its opposite end.

3. A folding stretcher with electromagnetic shielding function according to claim 1, characterized in that: Both of the support legs (204) are provided with casters (206) at their lower ends.

4. A folding stretcher with electromagnetic shielding function according to claim 1, characterized in that: The two ends of the support shielding mechanism (1) are movably sleeved on the carbon fiber lifting rod (201), and each of the four support legs (204) is fixedly provided with a fixed crossbar (4) in the lateral direction.

5. A folding stretcher with electromagnetic shielding function according to claim 1, characterized in that: The contact layer (101) is made of flame-retardant aramid fiber cloth, and the insulating layer (102) is made of epoxy resin coating material.

6. A folding stretcher with electromagnetic shielding function according to claim 1, characterized in that: The outer shielding layer (103) is made of copper-nickel alloy mesh material, the inner shielding layer (104) is made of ferrite absorbing material, and the support layer (105) is made of carbon fiber substrate material.

Images