Multi-cavity air bag structure of emergency evacuation slide

Abstract

The utility model discloses a multi-cavity air bag structure of an emergency evacuation slide, which comprises a strip-shaped bag body, a spacer is fixed in the bag body along the direction of the bag body, the bag body is divided into two independent small air bags by the spacer, and the two small air bags adopt independent air inlet channels; the spacer is made of flexible materials capable of being unfolded and recovered, and when the small air bag on one side leaks air, the spacer can be unfolded towards the air leakage side and attached to the inner wall of the small air bag on the air leakage side. According to the structure, even if the capsule body is damaged, the original outer contour of the capsule body can still be maintained, and vacancy is avoided.

Description

Technical Field

[0001] The utility model relates to life-saving for civil aircraft, in particular to a multi-cavity airbag structure of an emergency evacuation slide. Background Art

[0002] Emergency evacuation slides are a crucial life-saving feature on civil aircraft, primarily used to help passengers and crew evacuate the aircraft quickly and safely in emergencies. The main body of an emergency evacuation slide is constructed from a flexible, inflatable tape bag. This bag can rupture when struck by sharp objects or subjected to excessive pressure. The bag, particularly the portion in contact with the aircraft, is easily damaged by various circumstances during evacuation. While the remaining bags can still hold the aircraft in place, the damaged area creates a gap, which not only affects rescue efficiency but can also pose a safety hazard. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-cavity airbag structure for an emergency evacuation slide, which can maintain the original outer contour of the bag body even if the bag body is damaged, thereby avoiding the formation of gaps.

[0004] The technical solution adopted in this utility model is:

[0005] A multi-chamber airbag structure for an emergency evacuation slide includes a strip-shaped airbag body with a spacer fixed inside the airbag body along the direction of the airbag body. The spacer separates the airbag body into two independent small airbags, and the two small airbags use their own independent air inlet channels. The spacer is made of a flexible material that can be expanded and restored. When one small airbag leaks, the spacer can expand toward the leaking side and adhere to the inner wall of the small airbag on the leaking side.

[0006] Preferably, the spacer divides the balloon into two halves, and the two small air bags are of the same size.

[0007] Preferably, the capsule is cylindrical as a whole.

[0008] Preferably, the end surface and the outer circumferential surface of the capsule adopt an arc transition.

[0009] Preferably, the bladder is located where the emergency evacuation slide contacts the aircraft and is below the aircraft exit.

[0010] Preferably, the bladder is located at the lower end of the emergency evacuation slide.

[0011] The beneficial effects of the utility model are:

[0012] When the balloon is intact, the diaphragm can maintain the pressure balance of the two small airbags inside the balloon. When the balloon is damaged and one of the small airbags leaks, the pressure on both sides of the diaphragm is unbalanced, and the high-pressure side will squeeze the diaphragm to expand toward the low-pressure side, that is, the diaphragm expands toward the leaking side until the diaphragm fits against the inner wall of the small airbag on the leaking side and then stops expanding. In this way, even if the balloon is damaged, the original external contour of the balloon can still be maintained to avoid the formation of gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of a section of the multi-cavity airbag structure of the emergency evacuation slide.

[0014] Figure 2 This is a principle diagram of the process when the multi-cavity airbag structure of the emergency evacuation slide in the utility model is damaged.

[0015] Figure 3 It is a schematic diagram of the multi-chamber airbag structure of the emergency evacuation slide of the present invention after being damaged.

[0016] Figure 4 It is a schematic diagram of the utility model in which the bag body is in the position where the emergency evacuation slide contacts the aircraft.

[0017] In the figure: 1-bladder body; 2-spacer; 3-air inlet channel; 4-small airbag; 5-aircraft outlet. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] The present application provides a multi-chamber airbag structure for an emergency evacuation slide, such as Figure 1 As shown, it includes a strip-shaped bladder 1, with a spacer 2 fixed inside the bladder 1 along the direction of the bladder 1. The spacer 2 divides the bladder 1 into two independent small airbags 4. The two small airbags 4 use independent air inlet channels 3. The spacer 2 is made of a flexible material that can be expanded and restored. When one small airbag 4 leaks, the spacer 2 can expand toward the leaking side and adhere to the inner wall of the small airbag 4 on the leaking side. Figure 2 As shown, when the bladder 1 is intact, the diaphragm 2 can maintain the pressure balance of the two small airbags 4 inside the bladder 1. When the bladder 1 is damaged and the small airbag 4 on one side leaks, the pressure on both sides of the diaphragm 2 is unbalanced, and the high-pressure side will squeeze the diaphragm 2 to expand toward the low-pressure side, that is, the diaphragm 2 expands toward the leaking side until the diaphragm 2 fits on the inner wall of the small airbag 4 on the leaking side and stops expanding. In this way, even if the bladder 1 is damaged, the original external contour of the bladder 1 can still be maintained to avoid the formation of gaps.

[0020] In this embodiment, preferably: Figure 1 and Figure 2 As shown, the spacer 2 divides the capsule 1 into two halves, and the two small air bags 4 are of the same size; Figure 3As shown, the capsule 1 is cylindrical as a whole, and the end surface and the outer circular surface of the capsule 1 adopt an arc transition.

[0021] The capsule 1 can be installed at a key position of an emergency evacuation slide:

[0022] For example, see Figure 4 The bladder 1 is located at the position where the emergency evacuation slide contacts the aircraft and is located below the aircraft exit 5. This position is a typical support position. The airbag at this position is a support airbag. Various situations may occur during personnel evacuation. Therefore, it is extremely important to maintain the integrity and stability of the outer contour of the support airbag. With this structure, even if the bladder 1 is damaged, the original outer contour of the bladder 1 can still be maintained to avoid forming a gap, ensuring that the connection position with the cabin remains unchanged, thereby increasing the stability and reliability of the slide during operation.

[0023] For example, the bag body 1 is at the lower end of the emergency evacuation slide, which is a typical stepping position. The airbag at this position is an anti-stepping airbag. When people slide to the lower end, they will impact the anti-stepping airbag. Therefore, it is also very important to maintain the integrity and stability of the outer contour of the anti-stepping airbag. With this structure, even if the bag body 1 is damaged, the original outer contour of the bag body 1 can still be maintained to avoid the formation of gaps, ensure that the stepping position remains unchanged, and increase landing safety.

[0024] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

Claims

1. A multi-chamber airbag structure for an emergency evacuation slide, characterized by: It includes a strip-shaped sac body, inside which a diaphragm is fixed along the direction of the sac body. The diaphragm separates the sac body into two independent small air bags, and the two small air bags use their own independent air inlet channels. The diaphragm is made of a flexible material that can be expanded and restored. When one side of the small air bag leaks, the diaphragm can expand toward the leaking side and fit on the inner wall of the small air bag on the leaking side.

2. The multi-chamber airbag structure of the emergency evacuation slide according to claim 1, characterized in that: The septum divides the bladder into two halves, and the two small bladders are the same size.

3. The multi-chamber airbag structure of the emergency evacuation slide according to claim 1, characterized in that: The capsule is cylindrical as a whole.

4. The multi-chamber airbag structure of the emergency evacuation slide according to claim 3, characterized in that: The end face and the outer circumferential surface of the capsule adopt arc transition.

5. The multi-chamber airbag structure of an emergency evacuation slide according to any one of claims 1 to 4, characterized in that: The bladder is located where the emergency evacuation slide contacts the aircraft and is below the aircraft exit.

6. The multi-chamber airbag structure of an emergency evacuation slide according to any one of claims 1 to 4, characterized in that: The bladder is located at the lower end of the emergency evacuation slide.

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