Positive pressure type air respirator wearing device

Abstract

The invention provides a positive pressure type air respirator wearing device. The positive pressure type air respirator wearing device comprises a back plate, annular paws, a back supporting cushion and a waistband rotating assembly. Wherein the annular paw and the back supporting pad are fixed to the front side and the rear side of the back plate respectively, and the waistband rotating assemblies are installed on the left side and the right side of the back plate through hinges respectively and connected with the second buckle through the waistband. According to the gas cylinder fixing device, gas cylinders of different sizes are fixed through cooperation of the first adjusting positioning holes, the annular paws, the limiting belts and the first buckles, and the problem that stability is poor due to shaking of the gas cylinders is solved. Meanwhile, by adopting a structure installation mode of combining double-side back supporting cushions conforming to the curve shape of the waist and back of the human body with flexible damping balls and second adjusting positioning holes, the extrusion and impact of a positive pressure type air respirator on the back of the human body are avoided, meanwhile, the use of people with different heights is met, the physical output of rescue workers is effectively reduced, and the rescue efficiency is improved. And the comfort requirement of rescue workers is met.

Description

Technical Field

[0001] This invention patent belongs to the field of fire rescue equipment and relates to a positive pressure air respirator wearable device, and particularly to an improved air respirator wearable device. Background Technology

[0002] Positive pressure breathing apparatus (PPB) is designed to prevent firefighters from inhaling toxic or harmful gases during firefighting or rescue operations, thus enabling them to effectively perform these tasks. It mainly consists of a backplate, pressure reducing valve, air supply valve, face mask, and back support, with the backplate serving as the connection between the air cylinder and the user. However, existing PPB breathing apparatuses still have certain shortcomings in use, such as:

[0003] During rescue operations, conventional rigid air respirators can put pressure on the back of the human body. The back support and back panel also have problems such as fixed connection position and non-adjustability, making it difficult to meet the comfort needs of people of different heights.

[0004] On the other hand, when loading air cylinders of different sizes, straps are usually used to attach the air cylinders to the back plate. However, the straps cannot stably fix the air cylinders, causing them to sway and making the rescuers lose their center of gravity, which exacerbates the physical exertion of the rescuers. Summary of the Invention

[0005] The purpose of this invention is to provide a positive pressure air respirator wearable device to solve the problems of the impact force of the air respirator backplate on the back of the human body during rescue operations, the inability to adjust the connection position between the back support and the backplate to meet the needs of people of different heights, and the inability of the straps to stably fix the air cylinder, which causes the air cylinder to shake, resulting in instability of the rescuer's center of gravity and increased physical exertion.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: The positive pressure air respirator wearable device includes a back plate, a ring-shaped gripper, a back support pad, and a waist belt rotating assembly; one end of the ring-shaped gripper is connected to a connecting block via a hinge, the connecting block is fixed to a sliding block via bolts, the sliding block slides in a first groove, and is fixedly connected to the front side of the back plate via bolts, a first adjustment positioning hole, and a groove; the back support pad is connected to a fixed plate via a flexible shock-absorbing ball, the fixed plate slides in a second groove, and is fixedly connected to the rear side of the back plate via bolts, nuts, and a second adjustment positioning hole; the waist belt rotating assembly is respectively installed on the left and right sides of the back plate via hinges, and is connected to a buckle two via the waist belt.

[0007] One end of the ring gripper is connected to the first adjustment and positioning holes evenly distributed in the first sliding grooves on the left and right sides of the back plate via a connecting block and a sliding block, so as to bind gas cylinders of different specifications. The other end is bound by a limiting band and a buckle to form a binding structure.

[0008] The flexible shock-absorbing ball has nuts embedded at both the upper and lower ends. The nuts are fixed to the back support pad and the fixing plate by bolts. The back support pad and the fixing plate on the left and right sides of the back plate can rotate relative to each other, while conforming to the curve shape of the human waist and back. The second sliding groove has four second adjustment and positioning holes to improve the adaptability of people of different heights.

[0009] The back plate has holes in its structure to reduce its weight, while meeting the strength requirements.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] This invention redefines the product through analysis and summarization of its usage scenarios: it changes the traditional way of using the product, effectively reduces the physical exertion of rescue personnel, broadens the applicable population, improves the safety of product use, and reduces fatigue in the lower back; it adopts a structural design that combines double-sided back support pads conforming to the curve of the human lower back, flexible shock absorption, and a second adjustment positioning hole, improving the compression and impact experience when wearing the product, while also accommodating users of different heights; it uses a combination of a first adjustment positioning hole, a ring gripper, a limiting strap, and a buckle to secure air cylinders of different sizes, solving the problem of poor human-machine stability caused by air cylinder shaking; the quick-wear buckle structure effectively reduces the equipment donning time for firefighters and improves the practicality of the positive pressure air respirator. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a front view of the structure of a positive pressure air respirator wearable device according to the present invention;

[0014] Figure 2 This is a right view of the structure of a positive pressure air respirator wearable device according to the present invention;

[0015] Figure 3 This is a left view of the structure of a positive pressure air respirator wearable device according to the present invention;

[0016] Figure 4 This is a schematic diagram of the backplate structure in the positive pressure air respirator wearable device of the present invention;

[0017] Figure 5 This is a schematic diagram of the hand gripper structure in the positive pressure air respirator wearable device structure of the present invention;

[0018] Figure 6 This is a schematic diagram of the back support device structure in the positive pressure air respirator wearable device structure of the present invention.

[0019] In the diagram: 1. Back plate; 2. Circular gripper; 3. Limiting belt; 4. Buckle 1; 5. Back support pad; 6. Flexible shock-absorbing ball; 7. Waist belt rotating assembly; 8. Waist belt; 9. Buckle 2; 10. First slide groove; 11. First adjustment positioning hole; 12. Sliding block; 13. Connecting block; 14. Groove; 15. Second slide groove; 16. Second adjustment positioning hole; 17. Fixing plate; 18. Fixing through hole. Detailed Implementation

[0020] The invention will be further described below with reference to the accompanying drawings. (See attached figures) Figures 1 to 6 A positive pressure air respirator wearable device includes a back plate 1, an annular gripper 2, a back support pad 5, and a waist belt rotating assembly 7. The back plate 1 has perforations to reduce its weight while maintaining strength. One end of the annular gripper 2 is connected to a connecting block 13 via a hinge. The connecting block 13 is fixed to a sliding block 12 via bolts. The sliding block 1 slides within a first groove 10 and is fixedly connected to the front of the back plate 1 via bolts, a first adjustment positioning hole 11, and a groove 14. The back support pad 5 is connected to a fixing plate 17 via a flexible shock-absorbing ball 6. The fixing plate 17 slides within a second groove 15 and is fixedly connected to the rear of the back plate 1 via bolts, nuts, and a second adjustment positioning hole 16. The waist belt rotating assembly 7 is hinged to the left and right sides of the back plate 1 and is connected to a buckle 9 via a waist belt 8.

[0021] One end of the ring gripper 2 is connected to the first adjustment and positioning holes 11 evenly distributed in the first sliding grooves 10 on the left and right sides of the back plate 1 through the connecting block 13 and the sliding block 12. There are 3 first adjustment and positioning holes on each side. The sliding block 12 is fixed symmetrically. At the same time, the other end of the ring gripper 2 forms a binding structure through the limiting band and the buckle, which together realizes the binding and fixing of gas cylinders of different specifications.

[0022] The flexible shock-absorbing ball 6 has nuts embedded at both its upper and lower ends. The nuts are fixed to the back support pads 5 and the fixing plate 17 on the left and right sides of the back plate 1 respectively by bolts. The back support pads 5 conform to the curve shape of the human waist and back. At the same time, the flexible shock-absorbing ball 6 and the fixing plate 17 can rotate relative to each other, so as to better fit the back support pads 5 to the waist and back. The second sliding groove 15 has four second adjustment positioning holes 16. The fixing plate 17 is fixed with the appropriate second adjustment positioning holes 16 according to the needs of people of different heights, so as to improve the adaptability of people of different heights.

Claims

1. A donning arrangement for a positive pressure air breathing apparatus, characterised in that: It includes back plate (1), ring hand claw (2), back support pad (5) and waistband rotation assembly (7); one end of the ring hand claw (2) is connected with connecting block (13) through hinge, connecting block (13) is fixed with sliding block (12) through bolt, the sliding block (12) slides in first sliding slot (10), and is fixedly connected with the front side of back plate (1) through bolt, first adjusting positioning hole (11) and recess (14); back support pad (5) is connected with fixed plate (17) through flexible damping ball (6), the fixed plate (17) slides in second sliding slot (15), and is fixedly connected with the rear side of back plate (1) through bolt, nut and second adjusting positioning hole (16); waistband rotation assembly (7) is respectively installed on the left and right sides of back plate (1) through hinge, and the waistband rotation assembly (7) is connected with buckle two (9) through waistband (8).

2. The positive pressure air respirator donning device of claim 1, wherein: The back plate (1) is provided with holes in the premise of meeting the strength, so as to reduce the weight and increase the wearing comfort.

3. The positive pressure air respirator donning device of claim 1, wherein: The other end of the ring hand claw (2) is connected with buckle one (4) through limiting belt (3) to form a binding structure.

4. The positive pressure air respirator donning device of claim 1, wherein: The number of the first adjusting positioning hole (11) is six, which is uniformly distributed in the first sliding slot (10) on the left and right sides of the back plate (1), and is suitable for binding different specifications of gas cylinders.

5. The positive pressure air respirator donning device of claim 1, wherein: The number of the back support pad (5) is two, which is arranged on the left and right sides of the back plate (1) respectively, and conforms to the curve shape of the human waist and back.

6. The positive pressure air respirator donning device of claim 1, wherein: The upper and lower ends of the flexible damping ball (6) are embedded with nuts, and the nuts are fixed with the back support pad (5) and the fixed plate (17) through bolts respectively, and the back support pad (5) and the fixed plate (17) can rotate relative to each other.

7. The positive pressure air respirator assembly of claim 1, wherein: The number of the second adjusting positioning hole (16) in the second sliding slot (15) is four, which improves the adaptability of different height groups.

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