Portable first-aid kit

Abstract

The invention relates to the technical field of outdoor first-aid knapsacks, in particular to a portable first-aid kit. The portable first-aid kit comprises a first connecting piece, the bottom of the first connecting piece is rotationally connected with a second connecting piece, the side, away from the first connecting piece, of the second connecting piece is rotationally connected with a third connecting piece, and the top of the third connecting piece is rotationally connected with a fifth connecting piece. The connecting pieces can be folded and unfolded through design, so that the device has a knapsack form and a stretcher form, then the connecting pieces can be firmly fixed together in the stretcher form through mutual cooperation of the adjusting lead screws, the limiting pieces and the like, the stretcher is in a stiff state, the risk of secondary injury is reduced, and the working efficiency is improved. And through cooperation of a connecting gear, a connecting rack and a bidirectional rotating lead screw, the device can be quickly switched between a backpack form and a stretcher form, and the rescue efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of outdoor first aid backpack technology, and more particularly to a portable first aid kit. Background Technology

[0002] As living standards improve, people are pursuing more diverse leisure activities. Outdoor adventure, as an activity that combines nature, challenge, and freedom, is attracting more and more people to participate. Portable first aid kits are an important piece of equipment for outdoor activities. They combine the functions of a first aid kit and a hiking backpack, providing safety for outdoor adventurers.

[0003] For example, patent publication number CN221384081U, published on July 23, 2024, discloses a novel emergency backpack, including a bag body. The bag body includes a first side pad, a second side pad, a bottom pad, and two movable pads. The first side pad, bottom pad, and second side pad can form a U-shaped structure, and the two movable pads are folded and placed on both sides inside the U-shaped structure. Both sides of the first and second side pads are connected to sealing fabric, and a zipper structure is installed between the sealing fabrics on the same side of the first and second side pads. Both sides of the bottom pad are connected to arc-shaped fabric, and multiple first buttons are installed on the side of the arc-shaped fabric. Multiple buttonholes are opened at the bottom end of the side of the sealing fabric. However, the above solution still has certain shortcomings in actual use. For example, during use, when the bag body is unfolded and laid flat like a stretcher, there is a lack of fixing design between the pads (first side pad, second side pad, bottom pad, movable pad), and the stretcher cannot remain firm, which may cause secondary injury to the patient during transport.

[0004] Based on the above, the present invention proposes a portable first aid kit. Summary of the Invention

[0005] To overcome the shortcomings of the lack of fixed design between the cushions, which prevents the stretcher from remaining firm and may cause secondary injury to the patient during transport, this invention proposes a portable first aid kit.

[0006] The technical embodiment of the present invention is as follows: a portable first aid kit includes a first connecting member, a second connecting member rotatably connected to the bottom of the first connecting member, a third connecting member rotatably connected to the side of the second connecting member away from the first connecting member, a fifth connecting member rotatably connected to the top of the third connecting member, and a fourth connecting member rotatably connected to the side of the fifth connecting member close to the first connecting member. The fourth connecting member is in contact with the first connecting member. Telescopic rods are fixedly connected inside both the first and fourth connecting members. A carrying strap assembly is provided on the first connecting member. Symmetrically distributed first fixing blocks are fixedly connected to the sides of the second, third, and fifth connecting members, and symmetrically distributed second fixing blocks are fixedly connected to the side of the fourth connecting member. The second, third, and fifth connectors are all slidably connected to symmetrically distributed limiting rods on their sides. The limiting rods are also slidably connected to the adjacent first fixing blocks. Each limiting rod is connected to a connecting spring between itself and the adjacent second, third, and fifth connectors. The connecting springs are all wound around the adjacent limiting rods. The first connector is fixed to a symmetrically distributed third fixing block on the side closest to the second connector. Limiting members are slidably connected between the symmetrically distributed third fixing blocks. The limiting members are internally threaded with symmetrically distributed adjusting screws. The limiting members are slidably connected to the adjacent first fixing blocks. The limiting members pass through the first connector. A pin assembly is provided between the first connector and the fourth connector.

[0007] Optionally, the shoulder strap assembly includes a first shoulder strap, a first shoulder strap symmetrically distributed on the side of the first connector, a second shoulder strap symmetrically distributed on the side near the limiting member, and the ends of the first shoulder strap and the second shoulder strap are respectively equipped with a female buckle and a male buckle that can cooperate with each other.

[0008] Optionally, it also includes storage bags, with symmetrically distributed storage bags slidably connected between the second connector and the fifth connector. Each symmetrically distributed storage bag is equipped with a door, and each door is fitted with a combination lock.

[0009] Optionally, the pin assembly includes a plug rod, the plug rod is slidably connected to the side of the first connector, a return spring is connected between the plug rod and the first connector, and a socket is fixedly connected to the side of the fourth connector near the plug rod, with the plug rod and the socket slidably connected.

[0010] Optionally, it also includes connecting frames, with symmetrically distributed connecting frames fixed to the first connector, and the top of the third connector being flush with the top of the second connector.

[0011] Optionally, it also includes a moving mechanism for moving the storage bags outward when the backpack is unfolded. The moving mechanism is disposed in symmetrically distributed connecting frames. The moving mechanism includes a bidirectional rotating screw. The bidirectional rotating screw is rotatably connected in the connecting frame near the third connector. The symmetrically distributed storage bags are threadedly connected to the bidirectional rotating screw. The connecting frame near the first connector is slidably connected to the symmetrically distributed storage bags. A connecting gear is fixedly connected to the bidirectional rotating screw. A connecting rod is fixedly connected to the limiting rod near the connecting gear. A connecting rack is fixedly connected to the connecting rod.

[0012] Optionally, the connecting rack meshes with the connecting gear.

[0013] Optionally, it also includes a protective frame, with symmetrically distributed protective frames fixed to the sides of the second connector. The protective frames are used not only to protect the connecting gears and connecting racks, but also to support the storage box.

[0014] Optionally, it also includes a support mechanism for supporting the stretcher configuration. The support mechanism is mounted on the storage box and includes a fixed frame. Fixed frames are fixedly connected to symmetrically distributed protective frames. Fixed seats are fixedly connected to the bottom of symmetrically distributed storage boxes. Rotating frames are rotatably connected to the fixed seats. Returning torsion springs are connected between the rotating frames and adjacent storage boxes. The symmetrically distributed return torsion springs are wound around the adjacent rotating frames. Threaded tubes are fixedly connected to the symmetrically distributed rotating frames. Moving frames are threadedly connected between the symmetrically distributed threaded tubes. Support blocks are fixedly connected to the symmetrically distributed fixed seats. The support blocks are used to limit the movement of adjacent rotating frames.

[0015] Optionally, wheels are provided at the bottom of the first connector and on the symmetrically distributed rotating frame.

[0016] The present invention has the following advantages: First, the design allows the connecting parts to be folded and unfolded, enabling the device to have both backpack and stretcher forms. Second, by cooperating with the adjusting screw, limiting parts, first fixing block, limiting rod, and second fixing block, the connecting parts can be firmly fixed together in stretcher form, making the stretcher rigid and reducing the shaking and bumping of the patient during transport, thus reducing the risk of secondary injury and making it easier to transport the patient. Third, by cooperating with the connecting gear, connecting rack, and bidirectional rotating screw, the device can quickly switch between backpack and stretcher forms, improving rescue efficiency.

[0017] This invention uses a combination of a movable frame, a fixed frame, and a threaded tube to allow the rotating frame to automatically drop down as a support leg when the stretcher is in its normal position. This provides support for the stretcher bearers, reduces their burden, and improves the efficiency of rescue and transport, especially when they need to rest or wait. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the first connector, second connector, and third connector of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the first connecting member, limiting member, and adjusting screw of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the connecting frame, limiting member, and adjusting screw of the present invention.

[0022] Figure 5 This is a three-dimensional structural cross-sectional view of the limiting member, adjusting screw, and third fixing block of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the support mechanism of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the connecting gear, connecting rod, and connecting rack of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the components of the present invention, including the winding device, connecting gear, and connecting rack.

[0026] Figure 9 This is a three-dimensional structural diagram of the limiting mechanism of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the protective frame, fixed frame, and movable frame components of the present invention.

[0028] Figure 11 This is a three-dimensional structural diagram of the components of the present invention, including the fixing base, the reset torsion spring, and the threaded tube.

[0029] Figure 12 This is a three-dimensional structural diagram of the components of the present invention, including the reset torsion spring, threaded tube, and support block.

[0030] Figure 13 This is a three-dimensional structural diagram of the components such as the movable frame, rotating frame, and threaded tube of the present invention.

[0031] Figure 14 This is a three-dimensional structural diagram of the components of the present invention, including the fixing base, the reset torsion spring, and the threaded tube.

[0032] In the attached drawings, the following are the reference numerals: 1-first connector, 11-second connector, 12-third connector, 13-fourth connector, 14-fifth connector, 15-telescopic rod, 16-first shoulder strap, 17-second shoulder strap, 18-storage case, 19-first fixing block, 1901-second fixing block, 110-limiting rod, 111-connecting spring, 112-connecting frame, 113-limiting component, 114-adjusting screw, 115-third fixing block, 2-protective frame, 21-connecting gear, 22-connecting rod, 23-connecting rack, 24-bidirectional rotating screw, 3-fixed frame, 31-moving frame, 32-rotating frame, 33-fixed base, 34-reset torsion spring, 35-threaded tube, 36-support block, 4-insertion rod, 41-reset spring, 42-socket. Detailed Implementation

[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] Example 1: A portable first aid kit, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the device includes a first connector 1, a second connector 11 rotatably connected to the bottom of the first connector 1, a third connector 12 rotatably connected to the left side of the second connector 11, a fifth connector 14 rotatably connected to the top of the third connector 12, and a fourth connector 13 rotatably connected to the right side of the fifth connector 14. The fourth connector 13 is in contact with the first connector 1. Telescopic rods 15 are fixedly connected to the upper parts of both the first connector 1 and the fourth connector 13. A shoulder strap assembly is provided on the first connector 1. The front and rear sides of the second connector 11 are symmetrically positioned left and right, the front and rear sides of the third connector 12 are symmetrically positioned up and down, and the front and rear sides of the fifth connector 14 are symmetrically positioned left and right and fixedly connected to the first fixing blocks 19. The lower parts of the front and rear sides of the fourth connector 13 are fixedly connected to the second fixing blocks 1901. The front and rear sides of the second connector 11, the third connector 12, and the fifth connector 14 can slide. A limiting rod 110 is connected to the first fixed block 19, which is also slidably connected to the first fixed block 19. A connecting spring 111 is connected between the limiting rod 110 and the adjacent second connecting member 11, third connecting member 12, and fifth connecting member 14. The connecting spring 111 is wound around the adjacent limiting rod 110. A symmetrically distributed connecting frame 112 is fixedly attached to the first connecting member 1. The top of the third connecting member 12 is flush with the top of the second connecting member 11. A third fixed block 115 is fixedly attached to the lower part of the front and rear sides of the first connecting member 1. A limiting member 113 is slidably connected between the two third fixed blocks 115. An adjusting screw 114 is threadedly connected to the front and rear parts of the limiting member 113. The limiting member 113 is slidably connected to the adjacent first fixed block 19. The limiting member 113 passes through the first connecting member 1. A pin assembly is provided between the first connecting member 1 and the fourth connecting member 13.

[0035] like Figure 1 and Figure 3 As shown, the shoulder strap assembly includes a first shoulder strap 16, the upper parts of the front and rear sides of the first connector 1 are fixedly connected to the first shoulder strap 16, the lower parts of the front and rear sides of the first connector 1 are fixedly connected to the second shoulder strap 17, and the ends of the first shoulder strap 16 and the second shoulder strap 17 are respectively equipped with female buckles and male buckles that can cooperate with each other.

[0036] like Figure 2 and Figure 4 As shown, it also includes storage bags 18. The second connector 11 and the fifth connector 14 are slidably connected to symmetrically distributed storage bags 18. Both storage bags 18 are provided with doors, and each door is equipped with a combination lock.

[0037] like Figure 2 As shown, the plug assembly includes a plug rod 4, the plug rod 4 is slidably connected to the front side of the first connector 1, the return spring 41 is connected between the plug rod 4 and the first connector 1, and the socket 42 is fixedly connected to the front side of the fourth connector 13, and the plug rod 4 slides in the socket 42.

[0038] like Figure 6 , Figure 7 and Figure 8 As shown, it also includes a moving mechanism for moving the storage bag 18 outward when the backpack is unfolded. The moving mechanism is set in the connecting frame 112 and includes a bidirectional rotating screw 24. The bidirectional rotating screw 24 is rotatably connected in the left connecting frame 112. Both storage bags 18 are threadedly connected to the bidirectional rotating screw 24. The right connecting frame 112 is slidably connected to the two storage bags 18. A connecting gear 21 is fixed to the front side of the bidirectional rotating screw 24. A connecting rod 22 is fixed to the limiting rod 110 near the connecting gear 21. A connecting rack 23 is fixed to the left side of the connecting rod 22 and meshes with the connecting gear 21. Protective frames 2 are fixed to both the front and rear sides of the second connecting member 11. The protective frames 2 are used not only to protect the connecting gear 21 and the connecting rack 23, but also to support the storage bags 18.

[0039] When the device needs to be shaped like a backpack, the second connector 11, which serves as the base, is placed on the ground. The third connectors 12 and the first connector 1 on the left and right sides of the second connector 11 are folded towards each other at approximately 90 degrees. Then, the fifth connector 14 is folded to the right to cover the storage box 18. At this time, the insertion rod 4 is pulled down, and the return spring 41 will deform. Then, the fourth connector 13 is folded towards the first connector 1 so that it is in contact with the first connector 1. The insertion rod 4 is released, and under the elastic action of the return spring 41, the insertion rod 4 will automatically insert into the storage box 18. The backpack is assembled inside seat 42, and the doors of the storage compartments 18 can be opened to place personal items or first-aid medicines inside. The doors can then be closed and locked. The user can lean their back against the right side of the first connector 1, and then cross the two first shoulder straps 16 around their chest and fasten them to the corresponding second shoulder straps 17. The backpack is now on their back. If they do not wish to wear it, they can untie the first shoulder straps 16 and the second shoulder straps 17, pull the telescopic pole 15 upwards, and drag the backpack while holding the telescopic pole 15, similar to dragging a suitcase.

[0040] When the user needs to sit down and rest, simply place the second connector 11 side of the backpack on the ground. The backpack then functions like a chair, allowing the user to sit directly on the fifth connector 14 to rest. To unfold the backpack into a stretcher shape, first pull down the insertion rod 4 to disengage it from the socket 42. Then, unfold the first connector 1 and the fourth connector 13 in opposite directions. The fourth connector 13 will cause the fifth connector 14 and the third connector 12 to unfold to the left in sequence. At this point, the length of the stretcher is the sum of the lengths of the first, second, third, fifth, and fourth connectors 13, with adjacent limiting members 113 and limiting rods 110 aligned. Then, rotate the adjustment rod forward. The screw 114 drives the limiting member 113 to move to the left until it extends out of the third fixing block 115. As the limiting member 113 continues to move to the left until it is inserted into the adjacent first fixing block 19, it pushes the adjacent limiting rod 110 to the left, causing it to move to the left. The limiting rod 110 on the second connecting member 11 will also push the limiting rod 110 on the third connecting member 12 to the left. Similarly, the limiting rod 110 on the third connecting member 12 will also push the limiting rod 110 on the fifth connecting member 14 to the left. The limiting rod 110 on the fifth connecting member 14 will be inserted into the second fixing block 1901 on the fourth connecting member 13. Each connecting spring 111 will deform, so that the connecting members can be fixed together, making the stretcher stiff.

[0041] Simultaneously, when the limiting rod 110 on the second connector 11 moves to the left, this limiting rod 110 will drive the connecting rack 23 to move to the left through the connecting rod 22, thereby driving the bidirectional rotating screw 24 to rotate in the forward direction through the connecting gear 21, and thus driving the storage bag 18 to move outward. The outward-moving storage bag 18 will be removed from the second connector 11, and then the patient can lie on the stretcher and open the door of the storage bag 18 to take out the emergency medicine for the patient. When the stretcher needs to be restored to the backpack shape after use, first turn the adjusting screw 114 in the opposite direction, thereby driving the limiting rod 113 to move to the right and retract into the third fixing block 115. The right-moving limiting rod 113 will exit from the adjacent first fixing block 19, and the limiting rod 113 will no longer abut against the adjacent limiting rod 110. Under the elastic force of each connecting spring 111, each limiting rod 110 will move to the right and reset in sequence.

[0042] At this point, the connecting parts are no longer fixed together. Simultaneously, the limiting rod 110 on the second connecting part 11 will drive the connecting rack 23 to move to the right via the connecting rod 22, which in turn drives the bidirectional rotating screw 24 to rotate in the opposite direction via the connecting gear 21, thereby driving the storage box 18 to move inward and reset. As described in the previous steps, each connecting part is folded sequentially to… Figure 2The device is designed to be foldable and unfoldable, allowing it to function as both a backpack and a stretcher. Furthermore, by cooperating with the adjusting screw 114, limiting member 113, first fixing block 19, limiting rod 110, and second fixing block 1901, the connecting members are securely fixed together in stretcher mode, ensuring a rigid stretcher and reducing patient movement and jolting during transport, thus minimizing the risk of secondary injury and facilitating patient transport. Finally, the connecting gear 21, connecting rack 23, and bidirectional rotating screw 24 enable the device to quickly switch between backpack and stretcher modes, improving rescue efficiency.

[0043] Example 2: Based on Example 1, such as Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, it also includes a support mechanism for supporting the stretcher shape. The support mechanism is set on the storage box 18. The support mechanism includes a fixed frame 3. Fixed frames 3 are fixed to the left side of both protective frames 2. Fixed seats 33 are fixed to the left and right sides of the bottom of both storage boxes 18. Rotating frames 32 are rotatably connected to each of the four fixed seats 33. Return torsion springs 34 are connected between each rotating frame 32 and the adjacent storage box 18. The four return torsion springs 34 are all wound around the adjacent rotating frames 32. Threaded tubes 35 are fixed to each of the four rotating frames 32. Moving frames 31 are threadedly connected between the two threaded tubes 35 located at the bottom of the same storage box 18. Symmetrically distributed support blocks 36 are fixed to each of the four fixed seats 33. The support blocks 36 are used to limit the adjacent rotating frames 32. Wheels are provided at the bottom of the first connecting piece 1 and on each of the four rotating frames 32.

[0044] When the storage box 18 moves outward, it drives the rotating frame 32 and the moving frame 31 to move outward together via the fixed base 33. When the moving frame 31 contacts the fixed base 3, the fixed base 3 will abut against the moving frame 31. As the storage box 18 continues to move outward, the moving frame 31 moves inward relative to the rotating frame 32, thereby driving the threaded tube 35 to rotate. This, in turn, causes the rotating frame 32 to rotate downward until it contacts the support block 36, at which point the return torsion spring 34 is twisted. The downward rotating frame 32 is similar to installing a support leg at the bottom of the storage box 18. If the stretcher bearers want to rest at this time, they can lift the stretcher towards the ground. Simply move the storage box 18 closer to the ground until the rotating frame 32 contacts the ground. As the storage box 18 moves inward, as described in the previous steps, the storage box 18 will drive the rotating frame 32 and the moving frame 31 to move inward together through the fixed seat 33. When the moving frame 31 separates from the fixed frame 3, the rotating frame 32 will flip and reset under the action of the return torsion spring 34. In summary, through the cooperation of the moving frame 31, the fixed frame 3, and the threaded tube 35, the rotating frame 32 will automatically fall down as a support leg when the stretcher is in the form of a stretcher, which can provide support for the stretcher bearers, reduce their burden, and improve the efficiency of rescue and transportation, especially when they need to rest or wait.

[0045] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A portable first aid kit, comprising a first connector (1), a second connector (11) rotatably connected to the bottom of the first connector (1), a third connector (12) rotatably connected to the side of the second connector (11) away from the first connector (1), a fifth connector (14) rotatably connected to the top of the third connector (12), a fourth connector (13) rotatably connected to the side of the fifth connector (14) near the first connector (1), the fourth connector (13) being in contact with the first connector (1), a telescopic rod (15) being fixedly connected inside both the first connector (1) and the fourth connector (13), and a carrying strap assembly provided on the first connector (1), characterized in that, It also includes a first fixing block (19), and the sides of the second connector (11), the third connector (12), and the fifth connector (14) are all fixed with symmetrically distributed first fixing blocks (19). The sides of the fourth connector (13) are fixed with symmetrically distributed second fixing blocks (1901). The sides of the second connector (11), the third connector (12), and the fifth connector (14) are all slidably connected with symmetrically distributed limiting rods (110). The limiting rods (110) are also slidably connected to the adjacent first fixing blocks (19), and the limiting rods (110) are also slidably connected to the adjacent second connectors (11), the third connector (12), and the fifth connector (14). Each of the first connecting member (1) is connected by a connecting spring (111), and the connecting spring (111) is wound around the adjacent limiting rod (110). The first connecting member (1) is fixed with a symmetrically distributed third fixing block (115) on the side near the second connecting member (11). The symmetrically distributed third fixing blocks (115) are slidably connected to a limiting member (113). The limiting member (113) is internally threaded with a symmetrically distributed adjusting screw (114). The limiting member (113) is slidably connected to the adjacent first fixing block (19). The limiting member (113) passes through the first connecting member (1). A pin assembly is provided between the first connecting member (1) and the fourth connecting member (13).

2. A portable first aid kit according to claim 1, characterized in that, The shoulder strap assembly includes a first shoulder strap (16), a first shoulder strap (16) symmetrically distributed on the side of the first connector (1), a second shoulder strap (17) symmetrically distributed on the side near the restrictor (113), and the ends of the first shoulder strap (16) and the second shoulder strap (17) are respectively equipped with a female buckle and a male buckle that can cooperate with each other.

3. A portable first aid kit according to claim 2, characterized in that, It also includes storage boxes (18), and the second connector (11) and the fifth connector (14) are slidably connected to symmetrically distributed storage boxes (18). Each symmetrically distributed storage box (18) is equipped with a door, and each door is equipped with a combination lock.

4. A portable first aid kit according to claim 3, characterized in that, The plug assembly includes a plug rod (4), the plug rod (4) is slidably connected to the side of the first connector (1), a return spring (41) is connected between the plug rod (4) and the first connector (1), and a socket (42) is fixedly connected to the side of the fourth connector (13) near the plug rod (4), and the plug rod (4) and the socket (42) are slidably connected.

5. A portable first aid kit according to claim 4, characterized in that, It also includes a connecting frame (112), and the first connecting piece (1) is fixed with a symmetrically distributed connecting frame (112), and the top of the third connecting piece (12) is flush with the top of the second connecting piece (11).

6. A portable first aid kit according to claim 5, characterized in that, It also includes a moving mechanism for moving the storage bag (18) outward when the backpack is unfolded. The moving mechanism is set in the symmetrically distributed connecting frame (112). The moving mechanism includes a bidirectional rotating screw (24). The bidirectional rotating screw (24) is rotatably connected in the connecting frame (112) near the third connector (12). The symmetrically distributed storage bags (18) are threadedly connected to the bidirectional rotating screw (24). The connecting frame (112) near the first connector (1) is slidably connected to the symmetrically distributed storage bags (18). A connecting gear (21) is fixedly connected to the bidirectional rotating screw (24). A connecting rod (22) is fixedly connected to the limiting rod (110) near the connecting gear (21). A connecting rack (23) is fixedly connected to the connecting rod (22).

7. A portable first aid kit according to claim 6, characterized in that, The connecting rack (23) meshes with the connecting gear (21).

8. A portable first aid kit according to claim 7, characterized in that, It also includes a protective frame (2), and the side of the second connector (11) is fixed with a symmetrically distributed protective frame (2). The protective frame (2) is not only used to protect the connecting gear (21) and the connecting rack (23), but also to support the storage box (18).

9. A portable first aid kit according to claim 8, characterized in that, It also includes a support mechanism for supporting the stretcher shape. The support mechanism is set on the storage box (18). The support mechanism includes a fixed frame (3). Fixed frames (3) are fixedly connected to the symmetrically distributed protective frames (2). Fixed seats (33) are fixedly connected to the bottom of the symmetrically distributed storage boxes (18). Rotating frames (32) are rotatably connected to the symmetrically distributed fixed seats (33). Reset torsion springs (34) are connected between the rotating frames (32) and the adjacent storage boxes (18). The symmetrically distributed reset torsion springs (34) are all wound around the adjacent rotating frames (32). Threaded tubes (35) are fixedly connected to the symmetrically distributed rotating frames (32). Moving frames (31) are threadedly connected between the symmetrically distributed threaded tubes (35). Support blocks (36) are fixedly connected to the symmetrically distributed fixed seats (33). The support blocks (36) are used to limit the adjacent rotating frames (32).

10. A portable first aid kit according to claim 9, characterized in that, Wheels are provided on the bottom of the first connecting piece (1) and on the symmetrically distributed rotating frame (32).

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