Functional combined first aid backpack

Abstract

The invention discloses a functional combined first aid backpack, comprising a bag body and a carrying device; the carrying device comprises a dynamic waist belt, a shoulder strap and a back frame; a hook and loop fastener is arranged on the back of the shoulder strap, and buckles are arranged at both ends, both sides of the top and the middle of the bottom, which can be connected and fixed with the hook and loop fasteners and buckles at corresponding positions on the upper side of the back of the bag body; a rotating male buckle is arranged on the back of the dynamic waist belt, which can be inserted into the rotating female buckle on the lower side of the back of the bag body, and connected and fixed with the bag body through the buckles at corresponding positions; a zippered interlayer is arranged at the bottom of the dynamic waist belt, in which a wounded carrying net is stored, which can be taken out and connected to the carrying device when needed, and the wounded without mobility can be carried on the back; an interlayer is arranged at the bottom of the bag body, in which a backpack integrated raincoat is arranged; a V-shaped back frame made of light materials such as carbon fiber or aluminum alloy is arranged in the bag body. The invention has simple structure, convenient use, reasonable ergonomics, and can help users carry heavier medicines and equipment, reduce shoulder pressure, and improve carrying comfort.

Description

Technical Field

[0001] The invention belongs to the field of medical first aid equipment, and in particular relates to a functional combined first aid backpack. Background Art

[0002] When natural disasters such as floods and earthquakes occur, a large number of injured people will need to be rescued urgently. Due to the complex and harsh environmental conditions at the rescue site, it is difficult for large equipment to quickly arrive at the site to carry out first aid operations. At this time, the emergency medical rescue team needs to enter the rescue site in the form of a small team and rely on manpower to carry first aid equipment to carry out rescue activities. Due to the large number of medicines and equipment required and the limited carrying capacity of first aid personnel, in order to ensure the smooth implementation of the rescue operation, it is necessary to use a functional combination first aid backpack with functional module combination and ergonomic optimization as a carrier to hold the medicine, maximize the carrying capacity, save the physical strength of first aid personnel, and improve the carrying comfort.

[0003] For the functional combination first aid backpack, it needs to be based on ergonomics research, be suitable for rescuers of various body shapes and sizes, and be able to effectively transfer the pressure of the wearer's shoulders to the lumbar sacral region. The dynamic belt at the waist can swing with the body to adjust the posture of the backpack. Summary of the invention

[0004] In order to meet the needs of emergency medical rescue teams to quickly enter the rescue site by carrying emergency equipment by manpower when natural disasters such as floods and earthquakes occur, the present invention discloses a functional combined emergency backpack, including a bag body and a carrying device;

[0005] The carrying device comprises a dynamic waist belt, a shoulder strap and a back frame;

[0006] The shoulder strap and the bag body are connected and fixed by means of a Velcro and a plug buckle, wherein the Velcro is located at the back of the shoulder strap and the upper side of the back of the bag body, and the plug buckle is located at both ends of the shoulder strap, both sides of the top of the shoulder strap, the middle of the bottom of the shoulder strap, the middle of the back of the bag body, and both sides of the bottom of the back of the bag body;

[0007] The back of the dynamic belt is provided with a rotating male buckle;

[0008] The rotating male buckle comprises a bottom plate, a rotating plug-in and a fixing pin, wherein the bottom plate is fixed to the back of the dynamic waist belt, the bottom plate and the rotating plug-in are fixed by the fixing pin, and the rotating plug-in can rotate on the bottom plate around the fixing pin;

[0009] A rotating female buckle is provided on the lower back side of the capsule;

[0010] The dynamic waist belt is plugged into the bladder body through a rotating plug-in and a rotating female buckle, and is fixed to the bladder body using buckles on both sides of the bottom of the back of the bladder body;

[0011] The rotating male buckle is slid up and down in the rotating female buckle to adjust the position of the dynamic belt on the bag body;

[0012] When the bag is carried, the dynamic belt can swing and rotate on the bag along with the user's body to adjust the user's carrying posture; at the same time, the bag is kept in a vertical state under gravity to improve the stability in different ground environments and user's body postures;

[0013] The carrying device is a detachable structure and can be removed from the bag body and replaced;

[0014] A V-shaped back frame is arranged in the bag body, and the V-shaped back frame transfers the pressure of the bag on the shoulders to the lumbar sacral part of the human body with the strongest load-bearing capacity.

[0015] The bottom of the dynamic waist belt is provided with an interlayer with a zipper, in which a wounded person carrying net is installed. When necessary, the bag body and the carrying device can be disassembled, and the wounded person carrying net is connected to the carrying device, and the wounded person carrying net is used to carry the disabled wounded person on the back;

[0016] The bottom of the bag body is provided with an interlayer, in which a backpack-integrated raincoat is stored;

[0017] The V-shaped back frame is made of one of the materials such as carbon fiber, aluminum alloy, polycarbonate, acrylonitrile-butadiene-styrene terpolymer, etc.

[0018] The length of the carrying device is adjustable and can be adjusted according to the body shape of the user of the functional combined emergency backpack;

[0019] Fluorescent strips and reflective strips are arranged on both sides of the bag body, the head of the backpack integrated raincoat, the forearms of the backpack integrated raincoat and both sides of the body of the backpack integrated raincoat.

[0020] The beneficial effect of the present invention is that the carrying device of the functional combined first aid backpack disclosed by the present invention is a detachable structure, which can be quickly disassembled and replaced, and can also be connected to a matching wounded carrying net to be combined into a wounded carrying device, and the wounded who are unable to move can be carried on the back. In order to adapt to the harsh environment of various disaster sites, the functional combined first aid backpack is made of flame-retardant materials and contains a backpack integrated raincoat, which can be directly worn by the person carrying it when it rains to achieve rain protection for the person and the backpack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a functional combined first aid backpack of the present invention;

[0022] Figure 2 It is a schematic diagram of the capsule structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the carrying device of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection structure between the carrying device and the bag body of the present invention;

[0025] Figure 5 It is a schematic diagram of the rotating male buckle structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the wounded carrying net of the present invention;

[0027] Figure 7 It is a schematic diagram of a backpack-integrated raincoat of the present invention;

[0028] Figure 8 The deformation and stress distribution of the arc-shaped V-shaped back frame;

[0029] Fig. 9 The pressure on the shoulders and waist of the test persons;

[0030] Fig.10 The average pressure in the shoulder area of ​​the subject when carrying the functional combined emergency backpack;

[0031] Fig.11 The average pressure in the shoulder area when the subjects were wearing a backpack without a back frame. DETAILED DESCRIPTION

[0032] In order to better understand the content of the present invention, an embodiment is given here.

[0033] The invention discloses a functional combined first aid backpack, which comprises a bag body and a carrying device;

[0034] The carrying device comprises a dynamic waist belt, a shoulder strap and a back frame;

[0035] The shoulder strap and the bag body are connected and fixed by means of a Velcro and a plug buckle, wherein the Velcro is located at the back of the shoulder strap and the upper side of the back of the bag body, and the plug buckle is located at both ends of the shoulder strap, both sides of the top of the shoulder strap, the middle of the bottom of the shoulder strap, the middle of the back of the bag body, and both sides of the bottom of the back of the bag body;

[0036] The back of the dynamic belt is provided with a rotating male buckle;

[0037] The rotating male buckle comprises a bottom plate, a rotating plug-in and a fixing pin, wherein the bottom plate is fixed to the back of the dynamic waist belt, the bottom plate and the rotating plug-in are fixed by the fixing pin, and the rotating plug-in can rotate on the bottom plate around the fixing pin;

[0038] A rotating female buckle is provided on the lower back side of the capsule;

[0039] The dynamic waist belt is plugged into the bladder body through a rotating plug-in and a rotating female buckle, and is fixed to the bladder body using buckles on both sides of the bottom of the back of the bladder body;

[0040] The rotating male buckle is slid up and down in the rotating female buckle to adjust the position of the dynamic belt on the bag body;

[0041] When the bag is carried, the dynamic belt can swing and rotate on the bag along with the user's body to adjust the carrying posture; at the same time, the bag is kept in a vertical state under gravity, thereby improving the stability in different ground environments and user's body postures;

[0042] The carrying device is a detachable structure and can be removed from the bag body and replaced;

[0043] A V-shaped back frame is arranged in the bag body; the V-shaped back frame can significantly transfer the pressure of the bag on the shoulders to the lumbar sacral region which has the strongest load-bearing capacity of the human body.

[0044] The bottom of the dynamic waist belt is provided with an interlayer with a zipper, in which a wounded person carrying net is installed. When necessary, the bag body and the carrying device can be disassembled, and the wounded person carrying net is connected to the carrying device, and the wounded person carrying net is used to carry the disabled wounded person on the back;

[0045] The bottom of the bag body is provided with an interlayer, in which a backpack integrated raincoat is stored. When it rains, the person carrying the functional combined emergency backpack wears the raincoat to protect the person and the backpack from rain together.

[0046] The V-shaped back frame is made of one of the materials such as carbon fiber, aluminum alloy, polycarbonate, acrylonitrile-butadiene-styrene terpolymer, etc.

[0047] The length of the carrying device is adjustable and can be adjusted according to the body shape of the user of the functional combined emergency backpack;

[0048] Fluorescent strips and reflective strips are arranged on both sides of the bag body, the head of the backpack integrated raincoat, the forearms of the backpack integrated raincoat and both sides of the body of the backpack integrated raincoat, so as to directly display the outline of the human body in a dark environment and improve safety.

[0049] Figure 1 This is a schematic diagram of the structure of a functional combined first aid backpack of the present invention; Figure 2 It is a schematic diagram of the capsule structure of the present invention; Figure 3 It is a schematic diagram of the structure of the carrying device of the present invention; Figure 4 It is a schematic diagram of the connection structure between the carrying device and the bag body of the present invention; Figure 5 It is a schematic diagram of the rotating male buckle structure of the present invention; Figure 6 It is a schematic diagram of the structure of the wounded carrying net of the present invention; Figure 7 It is a schematic diagram of a backpack-integrated raincoat of the present invention. Figure 2 Among them, 501 is the shoulder strap buckle, 502 is the shoulder strap Velcro, 401 is the dynamic belt buckle, and 7 is the rotating female buckle. Figure 3In the middle, 5 is a shoulder strap, 4 is a dynamic waist belt, and 12 is a back frame. Figure 4 Among them, 501 is the shoulder strap buckle, 502 is the shoulder strap Velcro, and 6 is the rotating male buckle. Figure 5 In the figure, 10 is a fixing pin, 9 is a rotating plug-in, and 8 is a bottom plate.

[0050] In order to analyze the carrying ergonomics of the functional combined first aid backpack and evaluate its design rationality, the arc V-shaped back frame and the bag body of the carrying system were three-dimensionally modeled, and the load distribution was analyzed using the finite element method. The experiment was conducted by having the subjects carry the functional combined first aid backpack and the backpack of the non-back frame carrying system (hereinafter referred to as the non-back frame backpack). The subjects walked at a speed of 8km / h, and the shoulder pressure distribution within 10 minutes and the heart rate and blood oxygen saturation indicators within 30 minutes after the subjects were in a stable state were collected to evaluate the ergonomics of the internal back frame carrying system.

[0051] Figure 8 The deformation and stress distribution of the arc-shaped V-shaped back frame; Fig. 9 The pressure on the shoulders and waist of the test persons; Fig.10 The average pressure in the shoulder area of ​​the subject when carrying the functional combined emergency backpack; Fig.11 The average pressure in the shoulder area when the subjects were wearing a backpack without a back frame.

[0052] The experimental equipment used included H / P / Cosmos treadmill and TACTILUS vest pressure distribution test system, with a measurement range of 0-138kPa and a sampling frequency of 35 frames / second. The subjects were healthy males aged 25-35 years old, weighing (71.5±3.2) kg. The empty bag with a back frame weighed 2.63 kg (including a 200g back frame and 100g back frame fixing accessories), and the empty bag without a back frame weighed 2.23 kg, both of which contained 8.8 kg of first aid equipment.

[0053] Finite element analysis was performed on the arc-shaped V-shaped back frame, and the back frame and bladder models were established using ANSYS software. According to the actual connection method, the degrees of freedom (Ux, Uy, Uz) of the nodes in three directions were all constrained at the upper, middle and lower parts of the bladder and the carrying system. Assuming that the human body is a rigid body, the connection between the back frame and the bladder is realized through node coupling, and the relationship between the back of the bladder and the whole back frame is established through surface contact units.

[0054] To test the shoulder force, a test person was selected to run continuously for 10 minutes at a speed of 8km / h under 0 slope conditions. The pressure changes on the shoulders and waist of the test person caused by the functional combined first aid backpack and the backpack without a back frame were recorded in real time, and the average value within the shoulder area of ​​864cm2 was taken.

[0055] The heart rate and blood oxygen saturation were tested on 10 subjects, who accelerated from a stationary state to a speed of 8km / h and continued to run for 30 minutes at a slope of 0. Each person carried a backpack each time while running on a treadmill. During the test, the heart rate and blood oxygen saturation of the subjects were recorded when they were stationary, accelerated to 8km / h, and ran at 8km / h for 30 minutes. To avoid fatigue affecting the data, each person carried a backpack every day.

[0056] As for the deformation and stress distribution of the backpack frame, the finite element analysis results show that the maximum deformation of the backpack frame is 0.14mm and the maximum stress is 9.9MPa, which can bear the weight of the backpack. In terms of vertical force, the upper connection point of the bag body is subjected to a force of 42.2N, the middle connection point is subjected to a force of 3.3N, and the lower connection point is subjected to a force of 64.6N. The deformation and stress cloud diagram is shown in the figure below. Figure 8 As shown, Figure 8 The vertical force of the back frame is high at both ends and low in the middle, and the lower connection point of the bag bears a larger gravity. According to the matching relationship of the carrying system, the force on the upper connection point of the bag can be roughly regarded as the force on the shoulder, and the force on the lower connection point can be regarded as the force on the waist. The analysis results show that under this condition, the waist and shoulders jointly bear the weight of the bag, and the waist bears more, which meets the design purpose. Figure 8 (a) is the deformation cloud map, Figure 8 (b) is the stress contour diagram.

[0057] As for the stress on the shoulders, during running, the backpack will rise and fall periodically with the frequency of the steps. At the moment of pushing off the ground, the backpack presses down on the human body due to inertia, and the pressure on the human body reaches the maximum value at this time. Fig. 9 The pressure distribution of the backpack on the human body with and without the support of the backpack frame was captured at this moment, in which the red frame marks the stress area of ​​the shoulder. By comparing the two pictures, it can be seen that the red high-pressure area of ​​the shoulder is larger and darker in color without the support of the backpack frame, and the backpack exerts greater pressure on the shoulder, while the carrying system with the backpack frame can effectively cushion the impact of the backpack on the human body. Fig. 9 (a) is the pressure cloud diagram of the back frame. Fig. 9 (b) is the pressure contour diagram without back frame.

[0058] At the moment when the subject's body turns from being in the air to falling, the backpack will continue to move upward, and the pressure on the body is the smallest at this time. Then the backpack starts to fall, and the pressure on the body gradually increases until the subject pushes off the ground again, and the pressure reaches the maximum again, and changes periodically. Fig.10 and Fig.11The shoulder pressure data is collected when carrying a combined emergency backpack and a backpack without a back frame at a speed of 8 km / h and a cadence of 140 steps / minute. Since the amount of data collected is large and the periodic changes are basically the same, Fig.10 and Fig.11 Only the pressure changes within 25 seconds are displayed. The average pressure of the functional combined emergency backpack on the shoulder area is (2.74±2.04) kPa, and the average pressure of the backpack without a back frame on the shoulder area is (5.23±3.34) kPa.

[0059] From the comparison of the average pressure data of the two backpacks for 5 seconds, it can be observed that the pressure curve of the functional combination first aid backpack is significantly lower than that of the backpack without a back frame.

[0060] According to the comparison results of the subjects' heart rate and blood oxygen saturation under static conditions, when accelerating to a running state, and after running, under conditions of basically the same load (the functional combined first aid backpack is 400g heavier than the backpack without a back frame), the subjects' heart rates were initially similar, and gradually increased with the increase in exercise intensity. The heart rate when carrying a backpack without a back frame was higher than that of the functional combined first aid backpack.

[0061] Blood oxygen saturation is an important parameter that reflects the human respiratory cycle. As the exercise time gradually increases, the physical energy consumption of the subjects continues to increase, and the blood oxygen saturation value also decreases significantly. From the experimental results, it can be seen that the blood oxygen saturation of carrying this functional combined emergency backpack is significantly higher than that of a backpack without a back frame, indicating that the carrying system with a back frame structure effectively reduces the physical energy consumption of the wearer.

[0062] Although both backpacks have a belt and shoulder strap structure, the belt and shoulder straps of the backpack without a back frame are sewn on the surface of the bag body. The shoulder load is mainly transferred to the waist through the soft bag body. Since the bag body is easy to bend and deform, the amount of load transferred will be attenuated. The belt and shoulder straps of this functional combined first aid backpack are connected to the bag body after being combined with the back frame. The load transfer between the shoulder and the waist is mainly completed through the back frame structure. When it is properly carried and fixed, the bag body load can be effectively and reasonably distributed, so that more weight is borne by the lumbar sacral part, which bears more weight than the shoulders, significantly relieving shoulder pressure and improving carrying comfort and fatigue resistance. With the increase in the complexity and scale of war injuries and disaster injuries, the demand for first aid for war injuries and emergency rescue in remote and scattered environments has also increased simultaneously. The overall weight of medicines and equipment that rescuers need to carry continues to increase. Carrying for long distances and for a long time will lead to excessive consumption of physical energy, affecting rescue operations. The present invention is an effective solution to this problem.

[0063] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A functional combined first aid backpack, characterized in that: Including a sac and a carrying device; The carrying device comprises a dynamic waist belt, a shoulder strap and a back frame; The shoulder strap and the bag body are connected and fixed by means of a Velcro and a plug buckle, wherein the Velcro is located at the back of the shoulder strap and the upper side of the back of the bag body, and the plug buckle is located at both ends of the shoulder strap, both sides of the top of the shoulder strap, the middle of the bottom of the shoulder strap, the middle of the back of the bag body, and both sides of the bottom of the back of the bag body; The back of the dynamic belt is provided with a rotating male buckle; The rotating male buckle comprises a bottom plate, a rotating plug-in and a fixing pin, wherein the bottom plate is fixed to the back of the dynamic waist belt, the bottom plate and the rotating plug-in are fixed by the fixing pin, and the rotating plug-in can rotate on the bottom plate around the fixing pin; A rotating female buckle is provided on the lower back side of the capsule; The dynamic waist belt is plugged into the bladder body through a rotating plug-in and a rotating female buckle, and is fixed to the bladder body using buckles on both sides of the bottom of the back of the bladder body; The rotating male buckle is slid up and down in the rotating female buckle to adjust the position of the dynamic belt on the bag body; In the carrying state, the dynamic waist belt can swing and rotate on the bag along with the user's body to adjust the user's carrying posture; The carrying device is a detachable structure and can be removed from the bag body and replaced; A V-shaped back frame is provided in the bag body, and the V-shaped back frame transfers the pressure of the bag on the shoulders to the lumbar sacral region of the human body, which has the strongest load-bearing capacity; The V-shaped back frame is made of one of carbon fiber, aluminum alloy, polycarbonate, and acrylonitrile-butadiene-styrene terpolymer materials; The length of the carrying device is adjustable and can be adjusted according to the body shape of the user of the functional combined first aid backpack.

2. The functional combined emergency backpack according to claim 1, characterized in that: The bottom of the dynamic waist belt is provided with an interlayer with a zipper, in which a wounded person carrying net is installed. When necessary, the bag body and the carrying device can be disassembled, and the wounded person carrying net can be connected to the carrying device, and the wounded person carrying net can be used to carry an incapable wounded person.

3. The functional combined emergency backpack according to claim 1, characterized in that: The bottom of the bag body is provided with an interlayer, and the backpack integrated raincoat is stored in the interlayer.

4. The functional combined first aid backpack as claimed in claim 3, characterized in that: Fluorescent strips and reflective strips are arranged on both sides of the bag body, the head of the backpack integrated raincoat, the forearms of the backpack integrated raincoat and both sides of the body of the backpack integrated raincoat.

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