A self-triggering airbag cabin opening and closing system for unmanned aerial vehicles

Abstract

The present application discloses a self-triggering airbag cabin opening and closing system for unmanned aerial vehicles, which relates to the field of unmanned aerial vehicle landing technology, including an airbag cabin, a cabin door lock mechanism, an airbag cabin cover, an airbag and an air source device; the airbag cabin cover can be detachably installed on the airbag cabin, so that the airbag cabin and the airbag cabin cover can form a closed chamber; the airbag is placed in the chamber, and the airbag is connected to the air source device, and the air source device is used to inflate the airbag; the cabin door lock mechanism is used to lock the airbag cabin and the airbag cabin cover, and after the airbag is inflated, it will drive the cabin door lock mechanism to unlock. In this way, the coordinated work of airbag inflation and cabin cover unlocking can be achieved, and there is no need for an external power source to unlock the cabin cover, ensuring that the airbag inflation process and the cabin cover unlocking process are carried out synchronously, greatly simplifying the system structure and reducing costs.

Description

Technical Field

[0001] The present application relates to the field of drone landing technology, and in particular to a drone self-triggering airbag cabin opening and closing system. Background Art

[0002] Some parachute recovery drones use airbags for cushioning during the landing phase, and the airbag capsule must be opened to release the airbag from the nose before the drone touches the ground. The existing traditional airbag capsule opening and closing system usually separates the airbag inflation process from the capsule opening process:

[0003] 1. The airbag inflation and opening process uses high-pressure cold air as the air source device;

[0004] 2. The hatch is unlocked by an external power source.

[0005] However, the above-mentioned execution process is relatively complicated, and the external unlocking device is expensive. In addition, the hatch opening and inflation processes are independent of each other. If the hatch unlocking fails, the airbag may continue to inflate in the cabin and cannot be opened, and the internal pressure continues to increase, causing a safety hazard. Summary of the invention

[0006] The main purpose of the present application is to provide a self-triggered airbag compartment opening and closing system for unmanned aerial vehicles, which can solve the technical problems of the existing airbag compartment opening and closing system in the prior art, such as complex structure and poor coordination, and realize the coordinated work of airbag inflation and hatch unlocking, so as to ensure that the airbag inflation process and hatch unlocking process are carried out synchronously, thereby greatly simplifying the system structure and reducing costs.

[0007] To achieve the above-mentioned purpose, the present application provides a self-triggered airbag cabin opening and closing system for an unmanned aerial vehicle, comprising an airbag cabin, a cabin door locking mechanism, an airbag cabin cover, an airbag and an air source device; the airbag cabin cover is detachably installed on the airbag cabin, so that the airbag cabin and the airbag cabin cover can form an enclosed chamber; the airbag is placed in the chamber, and the airbag is connected to the air source device, and the air source device is used to inflate the airbag; the cabin door locking mechanism is connected to the outside of the airbag cabin, and the locking end of the cabin door locking mechanism can be engaged with the airbag cabin cover to lock the airbag cabin and the airbag cabin cover; the triggering end of the cabin door locking mechanism extends into the chamber, so that after the airbag is inflated, it can drive the cabin door locking mechanism to perform an unlocking action.

[0008] Optionally, in some embodiments of the present invention, a lock buckle is provided at one end of the airbag compartment cover, and the locking end of the door lock mechanism can be engaged with the lock buckle to lock the airbag compartment and the airbag compartment cover.

[0009] Optionally, in some embodiments of the present invention, the above-mentioned door lock mechanism includes a lock hook paddle, a first elastic member, a ball push rod, a bracket protective cover, a second elastic member, a chassis and a rotating shaft; the bracket protective cover is installed on the airbag cabin, the rotating shaft is installed on the bracket protective cover, the lock hook paddle is rotatably installed on the rotating shaft, one end of the lock hook paddle is engaged with the lock buckle, the other end of the lock hook paddle is fixedly connected to one end of the first elastic member, and the other end of the first elastic member is fixedly connected to the airbag cabin, the first elastic member is used to pull the lock hook paddle and keep the lock hook paddle engaged with the lock buckle; the ball push rod passes through the bracket protective cover, one end of the ball push rod is in contact with the lock hook paddle, and the other end of the ball push rod is connected to the chassis, the chassis is movably arranged inside the airbag cabin, and when the airbag is inflated, the ball push rod is pushed outward; the ball push rod is sleeved with a second elastic member, the second elastic member is arranged between the bracket protective cover and the chassis, and the second elastic member is used to push the chassis to prevent the ball push rod from sliding and causing the lock hook paddle and the lock buckle to fall off.

[0010] Optionally, in some embodiments of the present invention, the first elastic member and the second elastic member are both springs.

[0011] Optionally, in some embodiments of the present invention, one end of the ball head push rod away from the lock hook paddle is provided with a thread, and the chassis is provided with a screw hole used in conjunction with the thread of the ball head push rod.

[0012] Optionally, in some embodiments of the present invention, the bracket protective cover is provided with a push rod hole, and the push rod hole is used for installing a ball head push rod.

[0013] Optionally, in some embodiments of the present invention, the airbag compartment is provided with a first elastic member mounting hole, and the first elastic member mounting hole is used to mount one end of the first elastic member.

[0014] Optionally, in some embodiments of the present invention, an ear plug is provided at one end of the airbag compartment cover away from the lock buckle, and the airbag compartment is provided with a rear wall slot hole used in conjunction with the ear plug.

[0015] Optionally, in some embodiments of the present invention, the ear plug is an arc-shaped structure, the ear plug extends to an end away from the airbag compartment cover, and the ear plug is inclined toward a side close to the airbag compartment cover.

[0016] Optionally, in some embodiments of the present invention, a groove is provided on one side of the airbag compartment, and the groove is used to install a door lock mechanism.

[0017] Optionally, in some embodiments of the present invention, a tightening rope is provided inside the airbag compartment, and the tightening rope is used to tie and fix the airbag.

[0018] Optionally, in some embodiments of the present invention, the gas source device includes a gas cylinder, a solenoid valve and a catheter; the gas cylinder is used to inflate the airbag, the catheter connects the gas cylinder and the airbag, the solenoid valve is installed on the catheter, the solenoid valve is used to control the connection or closure of the catheter, and the solenoid valve is electrically connected to the processing module of the drone.

[0019] Optionally, in some embodiments of the present invention, the airbag is provided with a nozzle, which passes through the airbag cabin and is threadedly connected to the catheter.

[0020] Beneficial effects that can be achieved by the present application. A self-triggered airbag cabin opening and closing system for a drone proposed in an embodiment of the present application comprises an airbag cabin, a cabin door lock mechanism, an airbag cabin cover, an airbag and an air source device; the airbag cabin cover can be detachably mounted on the airbag cabin, so that the airbag cabin and the airbag cabin cover can form a closed chamber; the airbag is placed in the chamber, and the airbag is connected to the air source device, and the air source device is used to inflate the airbag; the cabin door lock mechanism is used to lock the airbag cabin and the airbag cabin cover, and after the airbag is inflated, it will drive the cabin door lock mechanism to unlock.

[0021] During the preparation process, the airbag cabin is installed on the drone, and the airbag is installed in the airbag cabin and the airbag cabin cover is installed on the airbag cabin to fix and protect the airbag. The airbag is ventilated by setting an air source device so that the airbag can be expanded, thereby playing a cushioning role in the landing stage of the parachute recovery drone.

[0022] Among them, a hatch lock mechanism is provided between the airbag compartment and the airbag compartment cover, which can lock the airbag compartment and the airbag compartment cover. When the airbag expands, it will squeeze the chamber formed inside the airbag compartment and the airbag compartment cover, thereby generating pressure on the hatch lock mechanism. When the airbag is inflated to a certain degree, sufficient pressure is generated on the hatch lock mechanism, causing the hatch lock mechanism to unlock, so that the airbag compartment and the airbag compartment cover are separated, so that the airbag can be popped out, thereby realizing the coordinated work of airbag inflation and hatch cover unlocking, and there is no need for an external power source to unlock the hatch cover, ensuring that the airbag inflation process and the hatch cover unlocking process are carried out simultaneously, greatly simplifying the system structure and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a self-triggering airbag compartment opening and closing system for a drone provided by an embodiment of the present invention;

[0024] Figure 2 A schematic structural diagram of an airbag compartment cover and an airbag compartment provided in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of a door lock mechanism provided by an embodiment of the present invention;

[0026] Figure 4A schematic diagram of the structure of a hatch door lock mechanism provided by an embodiment of the present invention when it is opened;

[0027] Figure 5 A schematic diagram of the structure of a hatch door lock mechanism and a lock buckle provided in an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the structure of an airbag module provided by an embodiment of the present invention;

[0029] Figure 7 A schematic structural diagram of an air source device provided in an embodiment of the present invention.

[0030] Icons: 1-airbag compartment, 2-door lock mechanism, 3-airbag compartment cover, 4-airbag, 5-tightening rope, 6-conduit, 7-air source device, 11-groove, 12-push rod hole, 13-first elastic member mounting hole, 14-slot hole, 21-lock hook paddle, 22-first elastic member, 23-ball head push rod, 24-bracket protective cover, 25-second elastic member, 26-chassis, 27-spindle, 31-lock buckle, 32-skin, 33-ear plug, 71-gas cylinder, 72-solenoid valve.

[0031] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The main solution of the embodiment of the present application is: a self-triggered airbag cabin 1 opening and closing system for an unmanned aerial vehicle is provided, comprising an airbag cabin 1, a cabin door locking mechanism 2, an airbag cabin cover 3, an airbag 4 and an air source device 7; the airbag cabin cover 3 is detachably installed on the airbag cabin 1, so that the airbag cabin 1 and the airbag cabin cover 3 can form an enclosed chamber; the airbag 4 is placed in the chamber, and the airbag 4 is connected to the air source device 7, and the air source device 7 is used to inflate the airbag 4; the cabin door locking mechanism 2 is used to lock the airbag cabin 1 and the airbag cabin cover 3, and after the airbag 4 is inflated, it will drive the cabin door locking mechanism 2 to unlock.

[0037] During the preparation process, the airbag cabin 1 is installed on the drone, and the airbag 4 is installed in the airbag cabin 1, and the airbag cabin cover 3 is installed on the airbag cabin 1, so as to fix and protect the airbag 4. The air source device 7 is provided to ventilate the airbag 4 so that the airbag 4 can be expanded, thereby playing a cushioning role in the landing stage of the parachute recovery drone.

[0038] Among them, by arranging a hatch lock mechanism 2 between the airbag compartment 1 and the airbag compartment cover 3, the hatch lock mechanism 2 can lock the airbag compartment 1 and the airbag compartment cover 3. When the airbag 4 expands, it will squeeze the chamber formed inside the airbag compartment 1 and the airbag compartment cover 3, thereby generating pressure on the hatch lock mechanism 2. When the airbag 4 is inflated to a certain extent, sufficient pressure is generated on the hatch lock mechanism 2, causing the hatch lock mechanism 2 to unlock, so that the airbag compartment 1 and the airbag compartment cover 3 are separated, so that the airbag 4 can be ejected, thereby realizing the coordinated work of the airbag 4 inflation and the hatch cover unlocking, and there is no need for an external power source to unlock the hatch cover, ensuring that the airbag 4 inflation process and the hatch cover unlocking process are carried out synchronously, greatly simplifying the system structure and reducing costs.

[0039] Reference Figure 1 , Figure 1A schematic diagram of the structure of a self-triggered airbag cabin opening and closing system for a drone provided in an embodiment of the present invention. A self-triggered airbag cabin 1 opening and closing system for a drone is provided, comprising an airbag cabin 1, a door lock mechanism 2, an airbag cabin cover 3, an airbag 4 and an air source device 7; the airbag cabin cover 3 can be detachably mounted on the airbag cabin 1, so that the airbag cabin 1 and the airbag cabin cover 3 can form a closed chamber; the airbag 4 is placed in the chamber, and the airbag 4 is connected to the air source device 7, and the air source device 7 is used to inflate the airbag 4; the door lock mechanism 2 is connected to the outside of the airbag cabin 1, and the locking end of the door lock mechanism 2 can be engaged with the airbag cabin cover 3 to lock the airbag cabin 1 and the airbag cabin cover 3; the trigger end of the door lock mechanism 2 extends into the chamber, so that the airbag 4 can drive the door lock mechanism 2 to perform an unlocking action after being inflated.

[0040] The airbag cabin 1 of this embodiment is directly installed on the drone, and the airbag cabin cover 3 is detachably connected to the airbag cabin 1. After the airbag cabin cover 3 covers the airbag cabin 1, a closed chamber is formed between the airbag cabin cover 3 and the airbag cabin 1, and the airbag 4 is installed in the closed chamber.

[0041] The air source device 7 is provided to ventilate the airbag 4 so that the airbag 4 can be expanded, thereby playing a buffering role in the landing phase of the parachute recovery drone. The start-up mode of the air source device 7 can be controlled by the processing module of the drone itself, and the air source device 7 can be powered by the power supply of the drone itself to start or shut down.

[0042] By arranging a hatch lock mechanism 2 between the airbag compartment 1 and the airbag compartment cover 3, the hatch lock mechanism 2 can lock the airbag compartment 1 and the airbag compartment cover 3. When the airbag 4 expands, it will squeeze the chamber formed inside the airbag compartment 1 and the airbag compartment cover 3, thereby generating pressure on the hatch lock mechanism 2. When the airbag 4 is inflated to a certain degree, sufficient pressure is generated on the hatch lock mechanism 2, causing the hatch lock mechanism 2 to unlock, so that the airbag compartment 1 and the airbag compartment cover 3 are separated, so that the airbag 4 can be ejected, thereby realizing the coordinated work of the airbag 4 inflation and the hatch cover unlocking, and there is no need for an external power source to unlock the hatch cover, ensuring that the airbag 4 inflation process and the hatch cover unlocking process are carried out synchronously, greatly simplifying the system structure and reducing costs.

[0043] Further, see Figure 2-Figure 3 , Figure 2 A schematic diagram of the structure of an airbag compartment of an airbag compartment cover 3 provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a hatch door lock mechanism provided in an embodiment of the present invention.

[0044] Figure 2Specifically, a lock buckle 31 structure is provided which is displaced at one end of the airbag hatch 3, and the locking end of the hatch lock mechanism 2 can be engaged with the lock buckle 31 to lock the airbag hatch 1 and the airbag hatch 3. The lock buckle 31 and the airbag hatch 3 are integrally formed.

[0045] Figure 3 The specific structure of the door lock mechanism 2 is specifically provided, including a lock hook paddle 21, a first elastic member 22, a ball head push rod 23, a bracket protective cover 24, a second elastic member 25, a chassis 26 and a rotating shaft 27; the bracket protective cover 24 is installed on the airbag compartment 1, the rotating shaft 27 is installed on the bracket protective cover 24, the lock hook paddle 21 is rotatably installed on the rotating shaft 27, one end of the lock hook paddle 21 is engaged with the lock buckle 31, the other end of the lock hook paddle 21 is fixedly connected to one end of the first elastic member 22, the other end of the first elastic member 22 is fixedly connected to the airbag compartment 1, and the first elastic member 22 is used to pull the lock hook paddle 21 , and the lock hook paddle 21 remains engaged with the lock buckle 31; the ball head push rod 23 passes through the bracket protection cover 24, one end of the ball head push rod 23 abuts against the lock hook paddle 21, and the other end of the ball head push rod 23 is connected to the chassis 26, and the chassis 26 is movably arranged inside the airbag cabin 1. When the airbag 4 is inflated, it pushes the ball head push rod 23 to move outward; the ball head push rod 23 is sleeved with a second elastic member 25, and the second elastic member 25 is arranged between the bracket protection cover 24 and the chassis 26. The second elastic member 25 is used to push the chassis 26 to prevent the ball head push rod 23 from sliding and causing the lock hook paddle 21 and the lock buckle 31 to fall off.

[0046] In this embodiment, the support protection cover 24 is a rectangular plate with a depression in the middle. A lock hook paddle 21 is rotatably mounted on the support protection cover 24 via a rotating shaft 27 and can rotate relative to the support protection cover 24. The lock hook paddle 21 can be just embedded in the depression of the support protection cover 24 when rotating, thereby increasing the rotation angle of the lock hook paddle 21 and reducing the possibility of accidental touch. The lock hook paddle 21 includes a connecting portion, a hook lock portion and a paddle portion, wherein the connecting portion of the lock hook paddle 21 is located between the hook lock portion and the paddle portion, the connecting portion of the lock hook paddle 21 is used for rotational connection with the rotating shaft 27, the hook lock portion of the lock hook paddle 21 is used for cooperation with the lock buckle 31 at one end of the airbag compartment cover 3, and the paddle portion of the lock hook paddle 21 is a movable end, which is used to be driven by the ball head push rod 23, thereby driving the lock hook paddle 21 to rotate as a whole.

[0047] The ball push rod 23 passes through the center of the bracket protection cover 24, and one end of the ball push rod 23 abuts against the lock hook paddle 21. The end of the ball push rod 23 abutting against the lock hook paddle 21 is in the shape of a sphere, which is used to enhance the stability of the abutment portion between the ball push rod 23 and the lock hook paddle 21. The other end of the ball push rod 23 is connected to the chassis 26. The ball push rod 23 and the chassis 26 are movably arranged inside the airbag cabin 1. When the airbag 4 is inflated, it abuts against the chassis 26, and when the airbag 4 continues to inflate, the ball push rod 23 is pushed to move outward, thereby pushing the ball head to drive the lock hook paddle 21 to rotate.

[0048] A second elastic member 25 is sleeved on the ball head push rod 23 and is disposed between the bracket protective cover 24 and the chassis 26, so that when the ball head push rod 23 is not subjected to external force, the ball head push rod 23 and the lock hook paddle 21 can maintain relative positions to prevent the ball head push rod 23 from shaking, thereby avoiding accidental touching of the lock buckle 31 of the airbag compartment cover 3, thereby causing the airbag compartment cover 3 to fall off prematurely.

[0049] One side of the first elastic member 22 is fixedly connected to the paddle portion of the lock hook paddle 21, and the other end of the first elastic member 22 is fixedly connected to the airbag compartment 1, so that when the lock hook paddle 21 is not subjected to external force, the lock hook paddle 21 and the lock buckle 31 can maintain a relative position to prevent the lock hook paddle 21 from shaking, thereby avoiding the lock hook paddle 21 and the lock buckle 31 from falling off.

[0050] As an optional implementation, the first elastic member 22 and the second elastic member 25 of this embodiment can both use springs. The first elastic member 22 and the second elastic member 25 are used in combination to effectively prevent the lock hook paddle 21 and the lock buckle 31 from falling off.

[0051] As an optional implementation, mounting holes are evenly spaced on the connecting plates on both sides of the groove 11 of this embodiment, so as to facilitate the detachable connection between the bracket protective cover 24 and the airbag cabin 1 by means of bolts or the like. In addition, a groove 11 is provided on one side of the airbag cabin 1, and when the bracket protective cover 24 is installed on the airbag cabin 1, the recessed part of the bracket protective cover 24 can be used in conjunction with the groove 11 of the airbag cabin 1. Specifically, when the bracket protective cover 24 is installed on the outer side wall of the airbag cabin 1, the recessed part of the bracket protective cover 24 is embedded in the groove 11 of the airbag cabin 1, and at this time, a placement hole for rotating the mounting shaft 27 is provided on the side of the bracket protective cover 24 away from the airbag cabin 1; when the bracket protective cover 24 is installed on the inner side wall of the airbag cabin 1, the groove 11 of the airbag cabin 1 coincides with the recessed part of the bracket protective cover 24, and at this time, the placement hole is provided on the outer side wall of the airbag cabin 1.

[0052] As an optional embodiment, the end of the ball push rod 23 of this embodiment away from the lock hook paddle 21 is provided with a thread, and the chassis 26 is provided with a screw hole used in conjunction with the thread of the ball push rod 23. This facilitates the detachable connection between the ball push rod 23 and the chassis 26. The bracket protection cover 24 is provided with a push rod hole 12, and the push rod hole 12 is used to install the ball push rod 23. The airbag compartment 1 is provided with a first elastic member installation hole 13, and the first elastic member installation hole 13 is used to install one end of the first elastic member 22.

[0053] As an optional implementation, a tightening rope 5 is provided inside the airbag compartment 1 of this embodiment, and the tightening rope 5 is used to tie and fix the airbag 4. Before the drone takes off, the tightening rope 5 is used to fix the airbag 4. When the airbag 4 is inflated, the tightening rope 5 is broken during the expansion process of the airbag 4, and the restraint is released, so that the airbag 4 can push the chassis 26 to move when the compartment is fully inflated, and finally the airbag compartment 1 and the airbag compartment cover 3 are separated.

[0054] The tightening rope 5 may be made of grass green ramie thread that complies with the FZ66318 standard, and may be broken by pressure when the airbag 4 is inflated.

[0055] Reference Figure 4-Figure 5 , Figure 4 A schematic diagram of the structure of the hatch door lock mechanism 2 provided in an embodiment of the present invention when it is opened; Figure 5 This is a schematic diagram of the structure of the hatch lock mechanism 2 and the lock catch 31 provided in an embodiment of the present invention. The moving direction of the lock hook paddle 21 is also marked.

[0056] When the airbag 4 is in a relaxed state, the first elastic member 22 is in an extended state, generating a pulling force on the paddle portion of the lock hook paddle 21 to move toward the bracket protective cover 24, so that the paddle portion of the lock hook paddle 21 has a tendency to move toward the bracket protective cover 24, thereby enabling the hook lock portion of the lock hook paddle 21 to more closely abut against the lock buckle 31, thereby enhancing the stability of the engagement between the lock hook paddle 21 and the lock buckle 31. The second elastic member 25 is in a static state or a compressed state, and can be used to increase the resistance of the ball push rod to move toward the lock hook paddle 21 when the drone shakes during flight, thereby minimizing the movement of the ball push rod toward the lock hook paddle 21 under external force, and preventing the lock hook paddle 21 from accidentally falling off.

[0057] When the airbag 4 begins to inflate, the chassis 26 abuts against the airbag 4, and the chassis 26 drives the spherical push rod to move outward. The spherical push rod abuts against the paddle portion of the lock hook paddle 21, and as the air expands, it continues to push the paddle portion of the lock hook paddle 21 to move to the side away from the bracket protective cover 24. At the same time, the hook lock portion of the lock hook paddle 21 disengages from the lock buckle 31, thereby realizing the separation of the airbag compartment 1 and the airbag compartment cover 3.

[0058] Reference Figure 6 , Figure 6A schematic diagram of the structure of the airbag compartment provided by an embodiment of the present invention provides a specific structure for the airbag compartment cover 3 and the airbag compartment 1 to be connected, the airbag compartment cover 3 is provided with an ear plug at one end away from the lock, and the airbag compartment is provided with a rear wall slot used in conjunction with the ear plug.

[0059] The airbag hatch 3 of the present embodiment includes a skin 32, a lock buckle 31 and two ear plugs 33, the two ear plugs 33 are located at one end of the skin 32, and the lock buckle 31 is located at the other end of the skin 32. Two rear wall slots 14 for matching with the ear plugs 33 are provided on one side of the airbag cabin 1. The door lock mechanism 2 is installed on the airbag cabin 1, and the lock buckle 31 is used in conjunction with the door lock mechanism 2.

[0060] Furthermore, the ear plug 33 of the present embodiment is an arc-shaped structure, the ear plug 33 extends toward one end away from the airbag compartment cover 3, and the ear plug 33 is inclined toward the side close to the airbag compartment cover 3, so that the airbag compartment cover 3 can be detachably connected through the cooperation of the ear plug 33 and the rear wall slot 14, and can achieve relative rotation.

[0061] When in use, the ear inserting piece 33 is inserted into the rear wall slot 14 by tilting the airbag compartment cover 3 , and then the airbag compartment cover 3 is rotated to lock the lock buckle 31 with the compartment door lock mechanism 2 .

[0062] As an optional implementation manner, the airbag compartment cover 3 and the airbag compartment 1 of this embodiment are made of the same material.

[0063] As an optional implementation, refer to Figure 7 , a specific structure of an air source device 7 is provided, the air source device 7 includes a gas cylinder 71, a solenoid valve 72 and a catheter 6; the gas cylinder 71 is used to inflate the airbag 4, the catheter 6 connects the gas cylinder 71 and the airbag 4, the solenoid valve 72 is installed on the catheter 6, the solenoid valve 72 is used to control the connection or closure of the catheter 6, and the solenoid valve 72 is electrically connected to the processing module of the drone.

[0064] The gas source device 7 of this embodiment is mainly divided into two parts. One part is a gas cylinder 71, which can store high-pressure cold air for inflating the airbag 4; the other part is a solenoid valve 72, which is used to control the connection or closure of the conduit 6. The conduit 6 connects the gas cylinder 71 and the airbag 4, and the solenoid valve 72 is installed on the conduit 6.

[0065] As an optional implementation, the airbag 4 of this embodiment is provided with a nozzle, which passes through the airbag cabin 1 and is threadedly connected to the catheter 6, so as to facilitate the detachable connection of the catheter 6 and the nozzle.

[0066] In order to facilitate the understanding of those skilled in the art, the following experimental example is made: before the UAV takes off, the airbag 4 is tied with a tightening rope 5, and then the airbag 4 is connected to the guide tube 6; then the rear end ear of the airbag hatch 3 is overlapped on the slot 14 of the rear wall of the airbag cabin 1; the lock hook paddle 21 of the hatch lock mechanism 2 is turned, and the front end lock buckle 31 of the airbag hatch 3 is hooked on the paddle, and the paddle is released. The paddle returns to its position under the action of the first elastic member 22, and the hatch is fastened, and the system is installed.

[0067] When the drone needs to land, the control solenoid valve 72 is opened, and the high-pressure gas cylinder 71 starts to inflate the airbag 4. As the pressure of the airbag 4 increases, the tightening rope 5 breaks, and the airbag 4 opens in the airbag compartment 1. As the pressure of the airbag 4 increases during the opening process, the chassis 26 of the door lock mechanism 2 can be pushed, driving the ball head push rod 23 to push the lock hook paddle 21. After the paddle rotates to a certain angle around the rotating shaft 27, the airbag compartment cover 3 lock buckle 31 and the paddle are separated. After the airbag compartment 1 cover flips to a certain angle under the action of its own gravity, the rear end ear is separated from the airbag compartment 1, and the airbag compartment cover 3 falls off the body. After the airbag 4 is completely freed from the restraint in the cabin, it opens from the cabin to the outside of the cabin and attaches to the bottom of the body to achieve buffering and shock absorption during the landing stage.

[0068] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A self-triggering airbag cabin opening and closing system for a drone, characterized in that: It includes an airbag compartment, a door locking mechanism, an airbag compartment cover, an airbag and an air source device; The airbag compartment cover is detachably mounted on the airbag compartment, so that the airbag compartment and the airbag compartment cover can form a closed chamber; The airbag is placed in the chamber, and the airbag is connected to the air source device, and the air source device is used to inflate the airbag; The door lock mechanism is connected to the outside of the airbag compartment, and the locking end of the door lock mechanism can be engaged with the airbag compartment cover to lock the airbag compartment and the airbag compartment cover; the trigger end of the door lock mechanism extends into the chamber, so that the airbag can drive the door lock mechanism to perform an unlocking action after being inflated; A lock buckle is provided at one end of the airbag hatch cover, and the locking end of the hatch lock mechanism can be engaged with the lock buckle to lock the airbag hatch and the airbag hatch cover; The hatch door lock mechanism includes a lock hook paddle, a first elastic member, a ball head push rod, a bracket protective cover, a second elastic member, a chassis and a rotating shaft; The bracket protection cover is installed on the airbag compartment, the rotating shaft is installed on the bracket protection cover, the lock hook paddle is rotatably installed on the rotating shaft, one end of the lock hook paddle is engaged with the lock buckle, the other end of the lock hook paddle is fixedly connected to one end of the first elastic member, the other end of the first elastic member is fixedly connected to the airbag compartment, and the first elastic member is used to pull the lock hook paddle and keep the lock hook paddle engaged with the lock buckle; The ball push rod passes through the bracket protection cover, one end of the ball push rod abuts against the lock hook paddle, and the other end of the ball push rod is connected to the chassis, and the chassis is movably arranged inside the airbag cabin, and when the airbag is inflated, the ball push rod is pushed to move outward; The ball head push rod sleeve is provided with the second elastic member, the second elastic member is arranged between the bracket protection cover and the chassis, and the second elastic member is used to push the chassis to prevent the ball head push rod from sliding and causing the lock hook paddle and the lock buckle to fall off; An ear plug is provided at one end of the airbag compartment cover away from the lock, and the airbag compartment is provided with a rear wall slot hole used in conjunction with the ear plug; A tightening rope is provided inside the airbag compartment, and the tightening rope is used to tie and fix the airbag.

2. The self-triggering airbag cabin opening and closing system for unmanned aerial vehicles according to claim 1, characterized in that: The first elastic member and the second elastic member are both springs.

3. The self-triggering airbag compartment opening and closing system for unmanned aerial vehicles according to claim 1, characterized in that: One end of the ball head push rod away from the lock hook paddle is provided with a thread, and the chassis is provided with a screw hole matched with the thread of the ball head push rod.

4. The self-triggered airbag cabin opening and closing system for unmanned aerial vehicles according to claim 1, characterized in that: The support protection cover is provided with a push rod hole, and the push rod hole is used for installing the ball head push rod.

5. The self-triggering airbag cabin opening and closing system for unmanned aerial vehicles according to claim 1, characterized in that: The airbag compartment is provided with a first elastic member mounting hole, and the first elastic member mounting hole is used for mounting one end of the first elastic member.

6. The self-triggering airbag compartment opening and closing system for unmanned aerial vehicles according to claim 1, characterized in that: The ear plug is an arc-shaped structure, the ear plug extends to an end away from the airbag compartment cover, and the ear plug is inclined to a side close to the airbag compartment cover.

7. The self-triggered airbag cabin opening and closing system for unmanned aerial vehicles according to claim 1, characterized in that: A groove is provided on one side of the airbag compartment, and the groove is used to install the compartment door locking mechanism.

8. The self-triggering airbag cabin opening and closing system for unmanned aerial vehicles as claimed in claim 1, characterized in that: The gas source device comprises a gas cylinder, a solenoid valve and a conduit; The gas cylinder is used to inflate the airbag, the conduit connects the gas cylinder and the airbag, the solenoid valve is installed on the conduit, the solenoid valve is used to control the connection or closure of the conduit, and the solenoid valve is electrically connected to the processing module of the drone.

9. The self-triggered airbag compartment opening and closing system for unmanned aerial vehicles as claimed in claim 8, characterized in that: The airbag is provided with a nozzle, which passes through the airbag cabin and is threadedly connected with the catheter.

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