Expanding type breathing apparatus

Abstract

The invention discloses an expanding type breathing apparatus. The expanding type breathing apparatus includes an oxygen bottle, a back frame, a breather pipe, straps, a rotating buckle structure, longitudinal adjustment mechanisms, telescopic rods and expansion elastic bodies. According to the expanding type breathing apparatus, positioning plates are slidably connected into expansion grooves ofa back plate in a clamped mode through the telescopic rods on one sides, the expansion elastic bodies are connected to the telescopic rods in a sleeving mode and are located in the expansion grooves,and both ends of the expansion elastic bodies are elastically squeezed between the inner walls of the expansion grooves and driving plates, so the expansion elastic bodies squeeze the driving plates towards the middle to drive the telescopic rods and the positioning plates to move to the middle. According to different shoulder widths, the positioning plates and the telescopic rods can be stretchedto the outside to adapt to the different shoulder widths.

Description

technical field [0001] The invention relates to an expandable respirator, in particular to a connection structure between an oxygen cylinder and a back frame of the expandable respirator. Background technique [0002] The air-expandable respirator is a breathing device used by emergency rescue personnel to prevent inhalation of harmful substances or in an oxygen-deficient environment during fire fighting or rescue. The air-expandable respirator will be equipped with oxygen cylinders for rescuers to breathe normally. The structure of a general air-expandable respirator includes an oxygen cylinder, a connecting belt, a strap, a back frame, a snorkel, and a mask. The back frame connects and fastens the oxygen bottle through the connecting strap. One end of the ventilation tube is connected to the oxygen cylinder, and the other end of the ventilation tube is connected to the mask. In the above structure, the installation of the back frame and the oxygen cylinder through the conn...

AI Technical Summary

Problems solved by technology

[0002] The air-expandable respirator is a breathing device used by emergency rescue personnel to prevent inhalation of harmful substances or in an oxygen-deficient environment during fire fighting or rescue. The air-expandable respirator will be equipped with oxygen cylinders for rescuers to breathe normally. The structure of a general air-expandable respirator includes an oxygen cylinder, a connecting belt, a strap, a back frame, a snorkel, and a mask. The back frame connects and fastens the oxygen bottle through the connecting strap. One end of the ventilation tube is connected to the oxygen cylinder, and the other end of the ventilation tube is connected to the mask. In the above structure, the installation of the back frame and the oxygen cylinder through the connecting belt may sometimes be unstable, causing the oxygen cylinder to shake greatly, and something may even fall off. , there are potential safety hazards in use. In addition, the distance between the strap and the back frame is not adjustable, and the best and comfortable position cannot be adjusted according to different users. At the same time, the appropriate strap distance cannot be adjusted according to the shoulder width of different people.

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