High-protective-property anti-falling device

Abstract

The device comprises a protective vest, openings are formed in the two sides of the protective vest, a zipper is arranged in the middle of the front face of the protective vest, a plurality of safety inserting grooves and a plurality of safety inserting buckles are arranged on the portions, on the two sides of the zipper, of the protective vest respectively, and the safety inserting grooves and the safety inserting buckles are distributed in the length direction of the zipper at intervals. The outer ends of the safety inserting grooves and the outer ends of the safety inserting buckles are connected with protective belts through adjusting belt buckles, one end of each protective belt is fixedly connected to the front face of the protective vest, the middle of each protective belt is connected with a traction belt located on the outer side of the corresponding opening, and the middle of each traction belt is connected with the back face of the protective vest through a pluggable assembly. An anti-falling block is arranged at the end of the traction belt, and the other end of the protection belt is connected with an adjusting belt buckle. The wrapping performance and the protection stability of the protection vest can be improved.

Description

Technical Field

[0001] This invention relates to a fall arrest device, and more particularly to a highly protective fall arrest device. Background Technology

[0002] A fall arrestor is a protective device that provides all-around protection for workers operating at heights of 2 meters or more. It primarily consists of a protective vest, an airbag, an inflation cylinder, and fall arrest sensors. The airbag is housed within the front and back layers of the protective vest. The vest's front features a zipper for opening and closing, along with safety buckles to secure the zipper. These safety buckles prevent the zipper from accidentally opening and causing the vest to fall off. When a worker accidentally falls, the fall arrest sensors detect the fall and inflate the airbag, enveloping the worker's body and cushioning the upward impact from the ground or other objects, protecting the spine, back muscles, and other vital organs from injury.

[0003] Based on the aforementioned protective vest, protective straps are needed on both sides to connect the front and back of the vest, preventing it from shifting or falling off after being worn. When the airbag inflates, the protective straps change from a loose, hanging state to a taut state as the vest expands, allowing space for the vest to inflate and avoiding obstruction of the airbag's inflation. However, this protective strap structure has several drawbacks in actual use. Firstly, when the vest is worn normally, the loosely hanging straps are unlikely to provide stable restraint and wrapping, meaning the vest is prone to swaying and shifting in the front-back and side-to-side directions, thus reducing the vest's wearing and protective effectiveness.

[0004] Secondly, to adjust the tightness of the protective vest after wearing, current protective vests also have adjustment buckles in the middle of the protective straps. These buckles allow for adjustment of the strap length, improving the vest's fit for workers of different body types. However, in practice, workers often overtighten the protective straps due to lack of experience, failing to allow sufficient space for the vest to inflate. Consequently, when the vest inflates, the straps obstruct the airbag, preventing it from fully expanding and reducing its protective effect on the worker.

[0005] The aforementioned limitations result in existing protective vests having poor coverage and protective stability. Summary of the Invention

[0006] The purpose of this invention is to provide a highly protective fall arrest device. It can improve the fit and protective stability of a protective vest.

[0007] The technical solution of the present invention: A high-protection fall arrest device includes a protective vest with openings on both sides. A zipper is provided in the center of the front of the protective vest. Safety slots and safety buckles are provided on both sides of the protective vest. There are multiple safety slots and safety buckles, which are spaced apart along the length of the zipper. The safety slots and safety buckles are interlocked. The outer ends of the safety slots and safety buckles are connected to a protective belt via an adjusting buckle. One end of the protective belt is fixedly connected to the front of the protective vest. A traction belt located outside the opening is connected to the middle of the protective belt. The middle of the traction belt is connected to the back of the protective vest via a plug-in assembly. An anti-slip block is provided at the end of the traction belt. The other end of the protective belt is connected to an adjusting buckle. The plug-in assembly includes a base. A central shaft is connected to one end of the base. A pressure plate is rotatably connected to the middle of the central shaft. A pressure tooth is provided at one end of the pressure plate. A torsion spring is sleeved on the outside of the central shaft between the pressure plate and the base. One end of the torsion spring is fixedly connected to the pressure plate, and the other end of the torsion spring is fixedly connected to the central shaft or the base. The torsion spring is used to apply a torque toward the base to the pressure plate, so that the pressure teeth squeeze and limit the traction belt. The adjusting buckle is used to adjust the extension length of the protective belt; One end of the traction belt passes through the plug-in assembly through the gap between the pressure plate and the base. When the protective vest is in normal use, the protective belt and the traction belt are used to connect the front and back of the protective vest, thereby tightening the protective vest at the opening. When the protective vest is inflated, the traction belt is used to overcome the squeezing force of the pressure plate and pull outward by the traction of the protective belt, thereby releasing the tightening of the protective vest at the opening. The anti-detachment block is used to limit the end of the traction belt when the protective vest is inflated, preventing the traction belt from detaching from the insertion and removal assembly.

[0008] In the aforementioned high-protection fall arrest device, the central shaft is rotatably connected to the base, one side of the central shaft is connected to the base via a limiting component, the other end of the torsion spring is fixedly connected to the central shaft, and the end of the central shaft extends to the outside of the base and forms a knob; the limiting component is used to limit the rotation of the central shaft.

[0009] In the aforementioned high-protection fall arrest device, the limiting component includes a collar that is fixedly connected to the central shaft, and several limiting grooves are distributed in a ring around the collar. The base is provided with a snap-fit ​​piece that engages with the limiting grooves.

[0010] In the aforementioned high-protection fall arrestor, the central shaft extends to the outside of the base near the limiting component and forms a knob, while the other end of the central shaft extends to the outside of the base and is threadedly connected to a limiting nut.

[0011] In the aforementioned high-protection fall arrestor, the base is connected to the central shaft via a round hole on the side near the limiting nut, and the base is connected to the central shaft via an elongated hole on the side near the knob; a limiting pressure rod is provided on one side of the central shaft, one end of the limiting pressure rod is fixedly connected to the base, and the other end of the limiting pressure rod extends to the top of the central shaft and fits against the central shaft.

[0012] In the aforementioned high-protection fall arrestor, a slide is formed between the central shaft and the base for the traction belt to pass through. The traction belt passes through the slide and extends to the outside of the base. The torsion spring and the limiting pressure bar are both located above the slide. The collar and the knob are integrally formed and located on the outside of the base.

[0013] In the aforementioned high-protection fall arrest device, the plug-in components are symmetrically distributed on both sides of the back edge of the protective vest, and the inner side of the base is fixedly connected to the protective vest.

[0014] In the aforementioned high-protection fall arrest device, the plug-in components are symmetrically arranged in the openings on both sides of the protective vest, and one end of the base is connected to the back edge of the protective vest via a sling.

[0015] Compared with the prior art, the present invention has the following characteristics: (1) The present invention, through the structural cooperation of the protective belt, the traction belt and the plug-in assembly, enables the protective belt to be adjusted in length by adjusting the buckle when the protective vest is in normal use, thereby adjusting the opening width so that the protective vest can wrap around the user from the front and back sides after being worn. In this state, the traction belt is limited by the cooperation of the plug-in assembly and the pressure teeth, so that the traction belt cannot slide freely. On this basis, when the protective vest is inflated, the traction belt can overcome the friction of the pressure teeth and be pulled outward under the traction of the protective vest, thereby leaving space for the protective vest to expand outward and ensuring that the protective vest fully expands when falling. (2) By limiting the structure of the plug-in component, the user can also adjust the pressure of the pressure plate on the traction belt through the central shaft, thereby ensuring that the traction belt will not be pulled out by turning or bending over when the protective vest is in normal use, thus ensuring the protective vest's wrapping effect on the user's body; on the other hand, it enables the protective vest to drive the traction belt to be pulled out stably when inflated, thus ensuring the protective stability of the protective vest. (3) Through the cooperation of the central shaft, knob and limit nut, on the one hand, the user can loosen the limit nut to leave space for the tilt of the central shaft during operation, thereby lifting one end of the central shaft to separate the limit groove and the snap-fit ​​piece, thereby realizing the free rotation of the central shaft; on the other hand, after the central shaft is rotated to the position, the operator can also tighten the limit nut to limit the central shaft, so that the central shaft will not tilt under force when the protective vest is used normally, that is, to ensure the stability of the pressure tooth. Therefore, the present invention can improve the wrapping and protective stability of the protective vest. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the protective vest from the front in Example 1; Figure 2 This is a schematic diagram of the protective vest at the opening in Example 1; Figure 3 This is a schematic diagram of the structure of the protective vest on the back in Example 1; Figure 4 This is a schematic diagram of the installation of the central shaft in Example 1; Figure 5 yes Figure 4 Sectional view along direction B; Figure 6 yes Figure 4 Sectional view along line C; Figure 7 This is a schematic diagram of the connection between the collar and the snap-fit ​​piece in Example 1; Figure 8 This is a schematic diagram of the structure at the opening of the protective vest in Embodiment 2.

[0017] The markings in the attached diagram are as follows: 1-protective vest, 2-opening, 3-zipper, 4-safety slot, 5-safety buckle, 6-adjusting buckle, 7-protective belt, 8-traction belt, 9-anti-slip block, 10-base, 11-central shaft, 12-pressure plate, 13-pressure tooth, 14-torsion spring, 15-ring, 16-clamping piece, 17-limiting nut, 18-limiting pressure rod, 19-slide rail, 20-baffle, 101-elongated hole, 111-knob, 151-limiting groove. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example 1. A highly protective fall arrestor, configured as follows: Figure 1-7As shown, the vest includes a protective vest 1 with openings 2 on both sides. A zipper 3 is located in the center of the front of the vest 1. Safety slots 4 and safety buckles 5 are respectively provided on both sides of the zipper 3. Multiple safety slots 4 and safety buckles 5 are distributed at intervals along the length of the zipper 3. The safety slots 4 and safety buckles 5 are interlocked. A protective strap 7 is connected to the outer end of the safety slots 4 and safety buckles 5 via an adjusting buckle 6. The adjusting buckle 6 is a conventional D-ring buckle used to adjust the length of the fabric strap. One end of the protective strap 7 is fixedly connected to the protective vest 1. On the front, the protective belt 7 is connected to the middle of the traction belt 8 located outside the opening 2. The middle of the traction belt 8 is connected to the back of the protective vest 1 via a plug-in assembly. The end of the traction belt 8 is provided with an anti-slip block 9. The other end of the protective belt 7 is connected to an adjusting buckle 6. The traction belt 8 and the protective belt 7 are connected to each other via a hanging ring. That is, one end of the traction belt 8 is fixedly connected to the hanging ring. The middle of the protective belt 7 passes through the hanging ring and returns to the front of the protective vest 1 and is connected to the adjusting buckle 6. The front of the protective vest 1 is provided with a sling for the user to limit the height of the protective belt 7. The protective belt 7 passes through the sling and is connected to the adjusting buckle 6. The plug-in assembly includes a base 10, one end of which is connected to a central shaft 11. A pressure plate 12 is rotatably connected to the middle of the central shaft 11. One end of the pressure plate 12 is provided with a pressure tooth 13. A torsion spring 14 is provided between the pressure plate 12 and the base 10 and is sleeved on the outside of the central shaft 11. One end of the torsion spring 14 is fixedly connected to the inside of the pressure plate 12, and the other end of the torsion spring 14 is fixedly connected to the central shaft 11. The torsion spring 14 is used to apply a torque toward the base 10 to the pressure plate 12, so that the pressure teeth 13 squeeze and limit the traction belt 8. The adjusting buckle 6 is used to adjust the extension length of the protective belt 7. The extension length of the traction belt 8 remains unchanged when the protective vest is in normal use. The user can control the width of the opening 2 by adjusting the length of the protective belt 7. One end of the traction strap 8 passes through the plug-in assembly through the gap between the pressure plate 12 and the base 10. When the protective vest 1 is in normal use, the protective strap 7 and the traction strap 8 are used to connect the front and back of the protective vest 1, thereby tightening the protective vest 1 at the opening 2. When the protective vest 1 is inflated, the traction strap 8 is pulled by the protective strap 7 to overcome the squeezing force of the pressure plate 12 and pull outward, thereby releasing the tightening of the protective vest 1 at the opening 2. The anti-detachment block 9 is used to limit the end of the traction belt 8 when the protective vest 1 is inflated, so as to prevent the traction belt 8 from detaching from the plug-in assembly.

[0020] The upper end of the opening 2 is connected to the front and back of the protective vest 1 via a shoulder strap, and the lower end of the opening 2 is connected to the front and back of the protective vest 1 via a protective strap 7 and a traction strap 8.

[0021] The central shaft 11 is rotatably connected to the base 10. One side of the central shaft 11 is connected to the base 10 via a limiting component. The other end of the torsion spring 14 is fixedly connected to the central shaft 11. The end of the central shaft 11 extends to the outside of the base 10 and forms a knob 111. The limiting component is used to limit the rotation of the central shaft 11.

[0022] The limiting component includes a collar 15 that is fixedly connected to the central shaft 11. The collar 15 has several limiting grooves 151 distributed in a ring around its perimeter. The base 10 is provided with a snap-fit ​​piece 16 that engages with the limiting grooves 151.

[0023] The central shaft 11 extends to the outside of the base 10 near the limiting component and forms a knob 111. The other end of the central shaft 11 extends to the outside of the base 10 and is threadedly connected to a limiting nut 17.

[0024] The base 10 is connected to the central shaft 11 via a round hole on the side near the limiting nut 17, and the base 10 is connected to the central shaft 11 via an elongated hole 101 on the side near the knob 111; a limiting pressure rod 18 is provided on one side of the central shaft 11, one end of the limiting pressure rod 18 is fixedly connected to the base 10, and the other end of the limiting pressure rod 18 extends to the top of the central shaft 11 and fits against the central shaft 11.

[0025] A slide 19 is formed between the central shaft 11 and the base 10 for the traction belt 8 to pass through. The traction belt 8 passes through the slide 19 and extends to the outside of the base 10. The torsion spring 14 and the limiting pressure rod 18 are both located above the slide 19. The collar 15 and the knob 111 are integrally formed and located on the outside of the base 10.

[0026] The base 10 is provided with a baffle 20 in the middle for unidirectionally limiting the anti-detachment block 9. When the traction belt 8 is subjected to the traction force from the protective belt 7, the anti-detachment block 9 can be forced to push open the pressure teeth 13 and slide towards the baffle 20 until it is intercepted by the baffle 20.

[0027] The pressure plate 12 can be provided with an elbow at the end near the pressure tooth 13 as needed, so that when the traction belt 8 is pulled outward, the anti-detachment block 9 can drive the pressure plate 12 to rotate and open before contacting the pressure tooth 13, and then the anti-detachment block 9 will squeeze the opened pressure tooth 13 a second time, thereby preventing the pressure tooth 13 and the anti-detachment block 9 from getting stuck together.

[0028] The plug-in components are symmetrically distributed on both sides of the back edge of the protective vest 1, and the inner side of the base 10 is fixedly connected to the back edge of the protective vest 1.

[0029] In this embodiment, the worker first puts on the protective vest 1, then zips up the zipper 3 and fastens the safety buckle 5 into the safety slot 4. The safety buckle 5 and the safety slot 4 work together to limit the protective vest 1 at the zipper 3, preventing the zipper 3 from accidentally opening and causing the protective vest 1 to fall off. After putting on the protective vest 1, the worker pulls one end of the protective straps 7 outwards, allowing the side of the protective straps 7 closest to the traction belt 8 to move towards the front of the protective vest 1 under the pulling action, as per the instruction manual. Figure 2 The protective vest 1 is positioned in direction A, thereby tightening the opening 2 in conjunction with the traction strap 8, so that the front and back of the vest 1 fit snugly against the user's torso after tightening, achieving the wrapping function. During the length adjustment process, the traction strap 8 is limited by the pressure teeth 13 and its relative position to the base 10 remains unchanged, and space is left between the anti-slip block 9 and the baffle 20 for the traction strap 8 to slide out.

[0030] When a worker falls, the airbags inside the protective vest 1 inflate and expand, causing the vest 1 on both sides of the opening 2 to open outwards. This causes the protective straps 7 to exert a pulling force on the traction strap 8 in the direction of A as the vest 1 opens. Under this pulling force, the traction strap 8 overcomes the friction limit of the pressure teeth 13 and is pulled outwards until the anti-slip block 9 and the baffle 20 come into contact. With this combination, this embodiment ensures that, on the one hand, during normal use, the pressure plate 12 and torsion spring 14 can press the traction strap 8 tightly, keeping the front and back of the vest 1 close to the user's torso; on the other hand, when the protective vest 1 inflates, the traction strap 8 can be pulled out under force, thus creating space for the vest 1 to open front and back, allowing the airbags inside the vest 1 to fully inflate and ensuring its protective effect.

[0031] Based on the above, this invention, through structural limitations of the insertion and removal assembly, allows the operator to adjust the deformation of the torsion spring 14 by rotating the central shaft 11, thereby adjusting the friction force of the pressure plate 12 on the traction belt 8. This ensures that the traction belt 8 remains in its original position during normal use of the protective vest 1, and can be stably pulled out when subjected to the tension caused by the inflated protective vest 1, guaranteeing the practical effect of this embodiment. During adjustment of the insertion and removal assembly, the operator first loosens the limiting nut 17 to release the restriction of the central shaft 11 relative to the base 10, then grasps the knob 111 at the end of the central shaft 11 and pulls it upwards, causing the limiting groove 151 at the end of the central shaft 11 to separate from the snap-fit ​​piece 16, thereby releasing the rotational restriction of the central shaft 11 by the base 10. After the central shaft 11 contacts the limit, the operator drives the central shaft 11 to rotate, causing the torsion spring 14 to change its deformation amplitude with the rotation of the central shaft 11, thereby controlling the pressure of the pressure plate 12. After the central shaft 11 is rotated into position, the operator re-inserts the collar 15 into the snap-fit ​​piece 16 and tightens the limiting nut 17 in the same manner to prevent the central shaft 11 from rotating accidentally during use. After the central shaft 11 is positioned, the cooperation of the limiting pressure rod 18 and the limiting nut 17 can position the central shaft 11, preventing the central shaft 11 from tilting under force and causing the pressure plate 12 to open, thus ensuring the limiting stability of the pressure plate 12 on the traction belt 8.

[0032] Example 2. A highly protective fall arrestor, configured as follows: Figure 8 As shown, the vest includes a protective vest 1 with openings 2 on both sides. A zipper 3 is located in the center of the front of the vest 1. Safety slots 4 and safety buckles 5 are respectively provided on both sides of the zipper 3. Multiple safety slots 4 and safety buckles 5 are distributed at intervals along the length of the zipper 3. The safety slots 4 and safety buckles 5 are interlocked. A protective strap 7 is connected to the outer end of the safety slots 4 and safety buckles 5 via an adjusting buckle 6. The adjusting buckle 6 is a conventional D-ring buckle used to adjust the length of the fabric strap. One end of the protective strap 7 is fixedly connected to the protective vest 1. On the front, the protective belt 7 has a traction belt 8 connected to the middle of the opening 2. The middle of the traction belt 8 is connected to the back of the protective vest 1 via a plug-in assembly. The end of the traction belt 8 is provided with an anti-slip block 9. The other end of the protective belt 7 is connected to an adjusting buckle 6. The traction belt 8 and the protective belt 7 are connected to each other via a hanging ring. That is, one end of the traction belt 8 is fixedly connected to the hanging ring. The middle of the protective belt 7 passes through the hanging ring and returns to the front of the protective vest 1 and is connected to the adjusting buckle 6. The front of the protective vest 1 is provided with a sling for the user to limit the height of the protective belt 7. The protective belt 7 passes through the sling and is connected to the adjusting buckle 6.

[0033] The structure of the plug-in assembly and the connection method of the traction strap 8 are the same as in Embodiment 1. The plug-in assembly is symmetrically arranged in the openings 2 on both sides of the protective vest 1. One end of the base 10 in the plug-in assembly is connected to the back edge of the protective vest 1 via a sling.

[0034] Compared with Embodiment 1, this embodiment changes the installation method of the plug-in component from being fixed to the back of the protective vest 1 to being suspended on the protective vest 1 on one side of the opening by a sling. This allows the force direction of the traction belt 8 to be consistent with the sliding direction when the protective vest 1 is inflated, thereby reducing the possibility of the traction belt 8 getting stuck at the bending position and improving the extraction stability of the traction belt 8.

Claims

1. A high-protection fall arrest device, comprising a protective vest (1), with openings (2) on both sides of the protective vest (1), a zipper (3) provided in the center of the front of the protective vest (1), and safety slots (4) and safety buckles (5) respectively provided on both sides of the protective vest (1), wherein the number of safety slots (4) and safety buckles (5) are multiple and distributed at intervals along the length direction of the zipper (3), and the safety slots (4) and safety buckles (5) are interlocked with each other, characterized in that: The outer ends of the safety slot (4) and safety buckle (5) are connected to a protective belt (7) via an adjusting buckle (6). One end of the protective belt (7) is fixedly connected to the front of the protective vest (1). The middle of the protective belt (7) is connected to a traction belt (8) located outside the opening (2). The middle of the traction belt (8) is connected to the back of the protective vest (1) via a plug-in assembly. The end of the traction belt (8) is provided with an anti-slip block (9). The other end of the protective belt (7) is connected to the adjusting buckle (6). The plug-in assembly includes a base (10), one end of which is connected to a central shaft (11). A pressure plate (12) is rotatably connected to the middle of the central shaft (11). One end of the pressure plate (12) is provided with a pressure tooth (13). A torsion spring (14) is provided between the pressure plate (12) and the base (10) and is sleeved on the outside of the central shaft (11). One end of the torsion spring (14) is fixedly connected to the pressure plate (12), and the other end of the torsion spring (14) is fixedly connected to the central shaft (11) or the base (10). The torsion spring (14) is used to apply a torque toward the base (10) to the pressure plate (12), so that the pressure teeth (13) squeeze and limit the traction belt (8); The adjusting buckle (6) is used to adjust the extension length of the protective belt (7); One end of the traction strap (8) passes through the plug-in assembly through the gap between the pressure plate (12) and the base (10). When the protective vest (1) is in normal use, the protective strap (7) and the traction strap (8) are used to connect the front and back of the protective vest (1), thereby tightening the protective vest (1) at the opening (2). When the protective vest (1) is inflated, the traction strap (8) is used to overcome the squeezing force of the pressure plate (12) and be pulled outward by the traction of the protective strap (7), thereby releasing the tightening of the protective vest (1) at the opening (2). The anti-detachment block (9) is used to limit the end of the traction belt (8) when the protective vest (1) is inflated, so as to prevent the traction belt (8) from detaching from the plug-in assembly.

2. The high-protection fall arrestor according to claim 1, characterized in that: The central shaft (11) is rotatably connected to the base (10). One side of the central shaft (11) is connected to the base (10) via a limiting component. The other end of the torsion spring (14) is fixedly connected to the central shaft (11). The end of the central shaft (11) extends to the outside of the base (10) and forms a knob (111). The limiting component is used to limit the rotation of the central shaft (11).

3. The high-protection fall arrestor according to claim 2, characterized in that: The limiting component includes a collar (15) that is fixedly connected to the central shaft (11). The collar (15) has several limiting grooves (151) arranged in a ring around its perimeter. The base (10) is provided with a snap-fit ​​piece (16) that engages with the limiting grooves (151).

4. The high-protection fall arrestor according to claim 3, characterized in that: The central shaft (11) extends to the outside of the base (10) near the limiting component and forms a knob (111). The other end of the central shaft (11) extends to the outside of the base (10) and is threaded to a limiting nut (17).

5. A high-protection fall arrestor according to claim 4, characterized in that: The base (10) is connected to the central shaft (11) via a round hole on the side near the limiting nut (17), and the base (10) is connected to the central shaft (11) via a long strip hole (101) on the side near the knob (111); a limiting pressure rod (18) is provided on one side of the central shaft (11), one end of the limiting pressure rod (18) is fixedly connected to the base (10), and the other end of the limiting pressure rod (18) extends to the top of the central shaft (11) and fits against the central shaft (11).

6. A high-protection fall arrestor according to claim 5, characterized in that: A slide (19) is formed between the central shaft (11) and the base (10) for the traction belt (8) to pass through. The traction belt (8) passes through the slide (19) and extends to the outside of the base (10). The torsion spring (14) and the limiting pressure bar (18) are both located above the slide (19). The collar (15) and the knob (111) are integrally formed and located on the outside of the base (10).

7. A high-protection fall arrestor according to claim 1, characterized in that: The plug-in components are symmetrically distributed on both sides of the back of the protective vest (1), and the inner side of the base (10) is fixedly connected to the protective vest (1).

8. A high-protection fall arrestor according to claim 1, characterized in that: The plug-in components are symmetrically arranged in the openings (2) on both sides of the protective vest (1), and one end of the base (10) is connected to the back edge of the protective vest (1) via a sling.

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