Safety device and flying object equipped with the safety device

Abstract

To provide a safety device which has excellent safety performance, is also capable of improving storability of injected objects in a container, and of securing more diversity of fitting positions to a flying body than conventional, and a flying body equipped with the safety device.SOLUTION: A safety device includes a pilot chute injection part 62 and a main parachute storage part. The pilot chute injection part 62 includes: an actuator 1; a push-up member 15 pushed up by the actuator 1 in one direction; a pilot chute 16 pushed up while being supported by the push-up member 15; a bottomed cylindrical container 18 storing the actuator 1, the push-up member 15, and the pilot chute 16; and a lid part 21 of a fan-shaped cross section closing an opening end of the container 18. The actuator 1 is fixed to a position displaced from a geometric center of the fan-shaped cross section in a bottom surface part of the container 18 via a base table 2.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a safety device for projecting a projectile such as a parachute or a paraglider, and to an aircraft equipped with the safety device. [Background technology]

[0002] In recent years, with the development of autonomous control technology and flight control technology, the industrial use of aircraft equipped with multiple rotors, for example drones, is accelerating. Drones fly, for example, by rotating multiple rotors simultaneously in a balanced manner, and ascend and descend by increasing and decreasing the rotation speed of the rotors, and move forward and backward by tilting the aircraft through increasing and decreasing the rotation speed of the rotors. Such aircraft are not only used for disaster relief activities, luggage transportation, landscape photography, etc., but are also expected to be used by people on board, and are expected to be used more widely worldwide in the future.

[0003] On the other hand, the risk of aircraft falling accidents as described above is considered a danger, which is hindering the widespread use of aircraft. In order to reduce the risk of such falling accidents, parachute devices for aircraft are being commercialized as safety devices.

[0004] For example, as an example of the above parachute safety device, the applicant has filed an application relating to the following Patent Document 1. As shown in FIG. 1 of the following Patent Document 1, the safety device of this Patent Document 1 includes a piston member (sliding member), a cylinder that houses the piston member and has a hole through which the piston member protrudes outward when actuated, a push-up member that is pushed up in one direction by the piston member, a projectile that is supported and pushed up by the push-up member, a gas generator that moves the piston member within the cylinder, and a container that houses at least the piston member, the cylinder, and the projectile, and the push-up member has a support portion that is located on the distal end side of the piston member based on the tip of the piston member in the moving direction of the piston member. Also, the bottom of the push-up member is fixed to the tip of the piston member. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-1680 A Summary of the Invention [Problem to be solved by the invention]

[0006] Although the safety device as disclosed in Patent Document 1 has excellent safety performance, it needs to be attached to the center of the flying object, so that it lacks variety in the attachment position to the flying object and is difficult to attach according to the situation of each flying object. In recent years, there has also been a demand for improving the storage capacity of the projectile in the container of the safety device.

[0007] Therefore, the present invention aims to provide a safety device that not only has excellent safety performance, but also allows for a greater variety of attachment positions on the aircraft than conventional devices, or improves the storage capacity of the projectile in the container, and an aircraft equipped with such a safety device. [Means for solving the problem]

[0008] (1) A device comprising: a sliding member; an actuator having a power source that generates a driving force for sliding the sliding member to one side; a support portion extending from the sliding member and supporting an object to be projected in an initial state; and a container that contains at least the sliding member, the actuator, the support portion, and the object to be projected, wherein a bottom portion of the actuator is fixed to a bottom portion of the container in a state where the bottom portion of the actuator is disposed at a position offset from the geometric center of the bottom portion of the container. The support portion has a shape following the shape of the bottom surface of the container, and at least a part of the support portion that faces the bottom of the actuator in the sliding direction of the sliding member is connected to the sliding member. It is characterized by the fact that

[0009] (2) In the safety device of (1) above, it is preferable that the safety device is capable of being attached to the outside of the aircraft, and that at least a portion of the outer shape of the container is formed to conform to the outer shape of a predetermined position of the aircraft.

[0010] (3) In the safety device of (1) above, it is preferable that the safety device further includes a trigger device which can be attached to the outside of the aircraft and transmits an automatic start-up signal to the actuator for automatically starting the actuator when the aircraft is in an abnormal state, or transmits a start-up signal to the actuator for starting the actuator when a trigger signal is received.

[0011] (4) In the safety device of (3) above, it is preferable that the aircraft is equipped with a propulsion device for propelling the aircraft, and the trigger device further includes an abnormal state determination unit that determines whether the aircraft is in an abnormal state or not, and a stopping unit that is capable of stopping the propulsion device by sending a signal to the propulsion device when the abnormal state determination unit determines that the aircraft is in an abnormal state.

[0012] (5) In the safety devices of (1) to (4) above, it is preferable that the projectiles are a pilot chute and a main parachute, the main parachute is connected to the pilot chute via a connecting member, the container has a first container section and a second container section, the first container section contains the pilot chute and is provided with the actuator that ejects the pilot chute, and the second container section contains the main parachute.

[0013] (6) From another viewpoint, in the safety devices according to (1) to (4) above, the projectile may be one or more of a net-like member for capture or catching, a fire extinguisher, a life-saving device, and a medicine.

[0014] (7) The aircraft of the present invention is characterized by comprising an aircraft body, any one of the safety devices (1) to (6) described above, and a propulsion mechanism connected to the aircraft body and propelling the aircraft. Effect of the Invention

[0015] According to the present invention, it is possible to provide a safety device that not only has excellent safety performance, but also allows for a greater variety of attachment positions on the aircraft than before, or improves the storage capacity of the projectile in the container, and an aircraft equipped with said safety device. [Brief description of the drawings]

[0016] [Figure 1] 1 is a perspective view showing an aircraft equipped with a safety device according to a first embodiment of the present invention; [Diagram 2] 2 is an enlarged plan view showing the vicinity of a safety device in the flying object of FIG. 1. [Diagram 3] 2 is a cross-sectional view of a pilot chute ejection portion of the safety device in FIG. 1. [Figure 4] 4A is a plan view of the pilot chute injection part of FIG. 3, and FIG. 4B is a bottom view of the pilot chute injection part of FIG. [Diagram 5] 4(a) is a left side view of the pilot chute injection part of FIG. 3, (b) is a right side view of the pilot chute injection part of FIG. 3, (c) is a front view of the pilot chute injection part of FIG. 3, and (d) is a rear view of the pilot chute injection part of FIG. 3. [Figure 6] FIG. 4 is a perspective view of the pilot chute ejection portion of FIG. 3. [Figure 7] 4 is a plan view showing a state in which a cover portion and a pilot chute are removed from the pilot chute injection portion of FIG. 3. FIG. [Figure 8] FIG. 11 is an enlarged plan view showing the vicinity of a safety device of an aircraft to which a safety device according to a second embodiment of the present invention is attached. [Figure 9] FIG. 9 is a cross-sectional view of a pilot chute ejection portion of the safety device in FIG. 8. [Figure 10] 9A is a plan view of the pilot chute injection part of FIG. 8, and FIG. 9B is a bottom view of the pilot chute injection part of FIG. 8. [Figure 11]8A is a left side view of the pilot chute injection part of FIG. 8, (b) is a right side view of the pilot chute injection part of FIG. 8, (c) is a front view of the pilot chute injection part of FIG. 8, and (d) is a rear view of the pilot chute injection part of FIG. 8. [Figure 12] FIG. 9 is a perspective view of the pilot chute ejection portion of FIG. 8. [Figure 13] 9 is a plan view showing a state in which a cover portion and a pilot chute are removed from the pilot chute injection portion of FIG. 8. FIG. [Figure 14] FIG. 11 is an enlarged plan view showing the vicinity of a safety device of an aircraft to which a safety device according to a third embodiment of the present invention is attached. [Figure 15] FIG. 15 is a cross-sectional view of the pilot chute ejection portion of the safety device in FIG. 14. [Figure 16] 15A is a plan view of the pilot chute injection part of FIG. 14, and FIG. 15B is a plan view showing the pilot chute injection part of FIG. 14 with a cover part and a pilot chute removed. [Figure 17] 1A is a plan view of a pilot chute injection section according to a first modified example, and FIG. 1B is a bottom view of the pilot chute injection section according to the first modified example. [Figure 18] 1A to 1D are views of a pilot chute ejection section according to Modification 1, in which (a) is a left side view, (b) is a right side view, (c) is a front view, and (d) is a rear view. [Figure 19] FIG. 11 is a perspective view of a pilot chute ejection portion according to Modification 1. [Figure 20] 10A is a plan view of a pilot chute injection section according to Modification 2, and FIG. 10B is a bottom view of the pilot chute injection section according to Modification 2. FIG. [Figure 21] 11A to 11D are views of a pilot chute ejection section according to Modification 2, in which (a) is a left side view, (b) is a right side view, (c) is a front view, and (d) is a rear view. [Figure 22] FIG. 11 is a perspective view of a pilot chute ejection portion according to Modification 2. [Figure 23]13A is a plan view of a pilot chute injection section according to a third modified example, and FIG. 13B is a bottom view of the pilot chute injection section according to the third modified example. [Figure 24] 11A to 11D are views of a pilot chute ejection section according to a third modified example, in which (a) is a left side view, (b) is a right side view, (c) is a front view, and (d) is a rear view. [Diagram 25] FIG. 11 is a perspective view of a pilot chute ejection portion according to Modification 3. [Figure 26] 13A is a plan view of a pilot chute injection section according to a fourth modified example, and FIG. 13B is a bottom view of the pilot chute injection section according to the fourth modified example. [Figure 27] 11A to 11D are views of a pilot chute ejection section according to a fourth modified example, in which (a) is a left side view, (b) is a right side view, (c) is a front view, and (d) is a rear view. [Figure 28] 13A and 13B are perspective views of a pilot chute injection section according to a fourth modified example, in which (a) mainly shows the curved surface side, and (b) mainly shows the side opposite to the curved surface. [Figure 29] FIG. 13 is a cross-sectional view of a pilot chute injection portion according to Modification 5. [Diagram 30] FIG. 13 is an enlarged plan view showing the vicinity of a safety device in an aircraft according to a sixth modified example. [Diagram 31] FIG. 21 is an enlarged plan view showing the vicinity of a safety device in an aircraft according to a seventh modified example. [Diagram 32] FIG. 23 is an enlarged plan view showing the vicinity of a safety device in an aircraft according to Modification 8. [Diagram 33] 13 is an enlarged plan view showing the vicinity of a safety device in an aircraft according to Modification 9. FIG. [Diagram 34] FIG. 23 is a cross-sectional view of an airbag device according to a tenth modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an aircraft equipped with a safety device according to a first embodiment of the present invention will be described with reference to FIGS.

[0018] As shown in FIG. 1, the aircraft 30 comprises an airframe 31, a safety device 100 attached to the airframe 31, one or more propulsion mechanisms (e.g., propellers, etc.) 32 connected to the airframe 31 and propelling the airframe 31, and a number of legs 33 provided on the bottom of the airframe 31.

[0019] 1 and 2, the safety device 60 includes an attachment member 61, a pilot chute launching section 62, a main parachute storage section 63, and a trigger device (not shown). Although not shown, the trigger device can be provided inside or outside the container 18 (a section that does not interfere with the operation of other sections), or inside or outside the fuselage 31 of the flying object 30.

[0020] As shown in FIG. 2, the mounting member 61 has a compartment 61a to the bottom of which the pilot chute launching section 62 is fixed, and a compartment 61b in which the main parachute storage section 63 is installed.

[0021] The main parachute storage section 63 has a main parachute (not shown) that is larger than the pilot chute 16 described below, and a cloth part 63a that covers the main parachute folded in the initial state. The main parachute covered by the cloth part 63a is stored in a compartment 61b of the mounting member 61 separately from the pilot chute 16, so that it is easier to store than when the mounting member 61 is not divided into compartments. Here, the cloth part 63a may or may not be formed in a shape that follows the outer shape of the fuselage 31 of the flying object 30. In addition, although not shown, the main parachute is connected to the pilot chute 16 (described later) that is launched from the pilot chute launching section 62 via a connecting member (for example, a string-like member). Although not shown, the main parachute is connected to the connection parts (four places) between the fuselage 31 and the propulsion mechanism 32 of the aircraft 30 via four separate connecting members (for example, string-like members) so that the aircraft 30 is suspended in the state shown in FIG. 1 (normal posture) after deployment in an emergency. When the pilot chute 16 described below is launched, the main parachute is pulled toward the upper part of the fabric part 63a via the connecting members (for example, string-like members), so that the upper part of the fabric part 63a pushed up by the main parachute is released (for example, the upper part of the fabric part 63a is peeled off), and the main parachute is smoothly and quickly launched and deployed from the main parachute storage part 63. After the main parachute is deployed, the aircraft 30 is suspended in the state shown in FIG. 1 (normal posture), and the landing is performed by the legs 33 in the same manner as in normal times.

[0022] As shown in Fig. 3, the pilot chute injection section 62 includes an actuator 1, a push-up member 15 that is pushed up in one direction (upward in Fig. 1) by the actuator 1, a pilot chute 16 that is supported and pushed up by the push-up member 15, a cylindrical container 18 with a bottom that contains the actuator 1, the push-up member 15, and the pilot chute 16, and a cover 21 with a sectoral cross section that closes the open end of the container 18. Here, Fig. 3 is also a cross-sectional view taken along the line AA in Fig. 4 (some parts are not shown in cross section).

[0023] The actuator 1 comprises a piston member 10 which is a sliding member, a cylinder 14 which houses the piston member 10 and has a hole 13 through which the piston member 10 protrudes outward (upward in Figures 1 and 2) when actuated, a base 2 (squib holder) to which one end of the cylinder 14 is crimped and which is attached to the center of the bottom inside the container 18, and a gas generator (such as a micro gas generator) 17 which serves as a power source for moving the piston member 10 inside the cylinder 14.

[0024] As shown in FIG. 3, the base 2 includes a substantially cylindrical member 2A that holds a gas generator 17 on the cylinder 14 side, which generates power to slide the piston member 10, and a flange portion 2B provided on the side of the substantially cylindrical member 2A opposite the cylinder 14 side.

[0025] The flange portion 2B includes a plurality of holes 2a used for mounting to the container 18, a plurality of holes 2b used for mounting to the mounting member 61, an insertion port 2c used for inserting the connector 22 for energizing the electrode 17b at the bottom of the gas generator 17, and tips 2d and 2e, and is machined into a horseshoe shape (a shape in which a part of the ring shape is cut out from the outer edge to the center to form a notch between the tips 2d and 2e) that is substantially U-shaped. An internal thread is cut on the inner wall of the hole 2a, so that the bolt 28 can be screwed in from the inside of the container 18. An internal thread is also cut on the inner wall of the hole 2b, so that a bolt (not shown) can be screwed in from the bottom side of the mounting member 61, so that the base 2 can be fixed to the mounting member 61. 4(b), each of the tip portions 2d, 2e of the base 2 is formed in a rounded curved shape (such as an R-shape) to prevent damage to components and injury to the human body due to contact. The space (notch) between the tip portions 2d, 2e communicates with the insertion port 2c.

[0026] The piston member 10 has a main body portion 10a having an outer diameter approximately the same as the inner diameter of the cylinder 14, a rod-shaped portion 10b connected to the main body portion 10a, extending upward, and having a smaller diameter than the main body portion 10a, a hole portion 10c provided inside the main body portion 10a and the rod-shaped portion 10b, a female thread portion 10d provided at the upper end portion of the rod-shaped portion 10b, and a groove portion 10e provided in the circumferential direction of the main body portion 10a.

[0027] At least the upper end side of the rod-shaped portion 10b is formed in a non-circular cross section, although not shown. Here, the non-circular shape refers to, for example, a polygonal shape, an elliptical shape, a star shape, or a gear shape, but any shape is included as long as it is non-circular. In addition, the tubular member 4 is fitted or loosely fitted in the lower part of the rod-shaped portion 10b with one end contacting the main body portion 10a. There may be a gap between the inner wall of the tubular member 4 and the outer wall of the rod-shaped portion 10b, but the gap may be within a range that does not hinder plastic deformation due to approximately uniform compression at the time of collision, which will be described later.

[0028] As shown in Fig. 2, the tubular member 4 is held by the holding member 5 at the lower part of the rod-shaped part 10b with one end part in contact with the main body part 10a. The tubular member 4 is made of a material that undergoes plastic deformation and has a lower tensile strength than the piston member 10 and the stopper member 23 described below (e.g., metals such as iron, aluminum, brass, copper, alloys such as stainless steel, resins, etc.). Here, the holding member 5 may be an elastic member such as rubber, or may be made of the same material as the tubular member 4, and may be shaped like a ring or a clip.

[0029] Furthermore, the tubular member 4 and the inner wall of the cylinder 14 are spaced apart by at least a predetermined distance (for example, a distance at which the tubular member 4, which has been plastically deformed by approximately uniform compression when colliding with the stopper member 23, does not come into contact with the inner wall of the cylinder 14) so ​​that the tubular member 4 does not come into contact with the inner wall of the cylinder 14. As a result, even if the tubular member 4 collides with the stopper member 23 and is plastically deformed, it deforms without being hindered by the inner wall of the cylinder 14, and the impact of the piston member 10 is sufficiently mitigated.

[0030] The hole 10c is formed along the central axis from the lower end of the main body 10a to the middle of the rod-shaped portion 10b, thereby making the piston member 10 lighter than if the hole 10c was not formed.

[0031] The female thread portion 10d is formed from the tip of the rod-shaped portion 10b to partway along the central axis. Furthermore, the male thread portion 50b of the bolt member 50, which will be described later, can be screwed into the female thread portion 10d.

[0032] A seal member 11 such as an O-ring is provided in the groove portion 10e in the circumferential direction.

[0033] A substantially cylindrical stopper member 23 is provided at the upper portion of the cylinder 14 so as to surround a part of the rod-shaped portion 10b of the piston member 10. That is, the rod-shaped portion 10b is disposed in a state of being inserted through a hole portion 13 of the stopper member 23. The cylinder 14 is also provided with a plurality of through holes 14a for releasing air in the space 6 to the outside during operation.

[0034] The stopper member 23 restricts the movement of the tubular member 4 inside the cylinder 14, and has a groove portion 23a provided along the outer periphery and a groove portion 23b provided along the inner periphery. The groove portion 23a is used to crimp and fix the other end of the cylinder 14 to the stopper member 23. Furthermore, a seal member 12 such as an O-ring is provided in the circumferential direction in the groove portion 23b.

[0035] The gas generator 17 is arranged below a main body portion 10a (to be described later) of the piston member 10 in a state in which the gas generator 17 is press-fitted into the lower open end of the cylinder 14. In addition, a cylindrical member 3 is provided around the cup body 17a of the gas generator 17 to form a predetermined distance between the gas generator 17 and the piston member 10.

[0036] As shown in Figs. 3, 4(b), and 5 to 7, the container 18 is a bottomed cylindrical member having a sectorial cross section, and the opening is closed by a lid 21 (see Figs. 3 and 4(a)) having a sectorial cross section. As shown in Figs. 3 and 4(b), a hole 25 into which the base 2 is inserted and a hole 29 for bolt fastening are provided in the bottom of the container 18, and the actuator 1 is fixed via the base 2 at a position shifted from the geometric center of the sectorial cross section at the bottom surface of the container 18 (here, a position at a predetermined distance or more from the arc part of the sectorial cross section). As a result, the space between the arc of the sectorial cross section and the actuator 1 is larger than when the actuator 1 is installed at the geometric center of the sectorial cross section, making it easier to accommodate the pilot chute 16. In other words, the accommodation of the pilot chute 16 in the container 18 is improved compared to when the actuator 1 is installed at the geometric center of the sectorial cross section.

[0037] The push-up member 15 is made of metal (aluminum, iron, or the like, or it may be an alloy), resin, or a composite material of resin and metal, CFRP, fiber-reinforced resin, or the like, and as shown in FIG. 1, has a bottomed tubular portion 19 arranged to cover a part of the cylinder 14, i.e., the outer part of the cylinder 14 except for the vicinity of the open end on the side where the gas generator 17 is arranged, and a fan-shaped support portion 20 provided at the opening of the bottomed tubular portion 19 and supporting the pilot chute 16.

[0038] The bottomed tubular portion 19 has a bottom 19a having a substantially flat plate shape or a substantially columnar shape (substantially columnar in this embodiment), a hole 51 formed on the lid portion 21 side of the bottom 19a, a hole 52 (second hole) having a smaller diameter than the hole 51, and a hole 53 (first hole) communicating with the hole 51 via the hole 52 and having a larger diameter than the hole 52. The hole 51 has a larger diameter than the head 50a of the bolt member 50. The hole 52 has a smaller diameter than the head 50a, and can guide the male threaded portion 50b of the bolt member 50 inserted from the hole 51 side to the hole 53 side. The hole portion 53 has approximately the same shape as one end (upper end) of the rod-shaped portion 10b, and forms a fitting portion into which one end of the rod-shaped portion 10b fits by inserting one end of the rod-shaped portion 10b through an insertion opening 53a provided on the cylinder 14 side of the bottom 19a of the bottomed tubular portion 19.

[0039] The bolt member 50 connects the rod-shaped portion 10b and the push-up member 15 by inserting the male thread portion 50b into the hole portion 52 from the hole portion 51 side and screwing it into the female thread portion 10d of the rod-shaped portion 10b fitted into the hole portion 53. At this time, one end of the rod-shaped portion 10b is non-circular and is fitted into the hole portion 53 of approximately the same shape, so that the rod-shaped portion 10b does not rotate together when the bolt member 50 is screwed into the female thread portion 10d. Specifically, since the tip portions of the push-up member 15 and the piston member 10 are non-circular and fitted together, when the bolt member 50 is fastened, the push-up member 15 can be rotated while being fixed, and the piston member 10 is tightened toward the gas generator 17, and can be tightened without rotating together.

[0040] As shown in Fig. 3, the support part 20 is provided so as to be spaced apart from the inner bottom surface of the container 18 in the initial state. In addition, as shown in Fig. 7, the outer periphery of the support part 20 is formed in a fan shape following the internal shape of the container 18 so as not to come into contact with the inside of the container 18.

[0041] The pilot chute 16 is accommodated within the container 18 between the inner surface of the container 18 and the outer surface of the bottomed tubular portion 19 of the push-up member 15, for example, so as to surround approximately half of the inner side of the outer surface of the bottomed tubular portion 19. The pilot chute 16 is connected to one end of the above-mentioned connecting member, and the other end of the connecting member is connected to the main parachute.

[0042] The gas generator 17 may be an igniter alone, or a gas generator equipped with an igniter and a gas generating agent. A hybrid or stored type gas generator may be used in which a gunpowder-type igniter is used to break the seal of a small gas cylinder and release the gas inside to the outside. In this case, the pressurized gas in the gas cylinder may be a non-flammable gas such as argon, helium, nitrogen, or carbon dioxide, or a mixture of these. In order to reliably propel the piston when the pressurized gas is released, the gas generator may be equipped with a heating element made of a gas generating agent composition or a thermite composition.

[0043] Incidentally, a pilot chute ejection section 62 that ejects the pilot chute 16 is mainly composed of the piston member 10, the cylinder 14, the push-up member 15, the gas generator 17, and the like.

[0044] The trigger device includes, for example, a control unit (not shown) having a CPU, ROM, RAM, etc., and an abnormal state determination unit (not shown) that determines whether the aircraft 30 is in an abnormal state based on a signal received from a detection unit (not shown) that detects the state of the aircraft 30 (failure, inoperability, flight state (flight attitude, speed, angular velocity, altitude, attitude angle, etc.), distance to an obstacle, position information, etc.), and is capable of automatically transmitting command signals, activation signals, etc. to each part depending on the situation (for example, when the aircraft 30 is in an abnormal state (abnormal)), or receiving command signals, etc. from the outside via a communication unit (not shown) and transmitting command signals, activation signals, etc. to each part. For example, when the aircraft 30 is in an abnormal state, the trigger device has a function of transmitting an automatic activation signal to the actuator 1 for automatically activating the actuator 1, and transmitting an activation signal to the actuator 1 for activating the actuator 1 when a trigger signal is received from a remote signal transmitter / receiver operated by an operator.

[0045] Here, examples of the detection unit include a signal receiving sensor, an acceleration sensor, a gyro sensor, an air pressure sensor, a GPS (Global Positioning System), a laser sensor, an ultrasonic sensor, an infrared sensor, a millimeter wave radar, a sub-millimeter wave radar, a speed sensor, a monocular or compound eye vision sensor, an energy amount sensor, and a wind direction detection sensor, and includes at least one of these. Other examples of the detection unit may include a unit that detects that an emergency signal has been transmitted from an emergency signal transmitting device in response to an operation by an operator, a unit that detects a failure of equipment provided in the flying object 30, and the like.

[0046] Furthermore, the above-mentioned "abnormality" refers to a case where the abnormality determination unit determines that the aircraft 30 is in an abnormal state (such as a breakdown, inoperability, or an abnormal fall) based on a signal from the above-mentioned detection unit provided in the aircraft 30 or the safety device 100. Specifically, the abnormality determination unit determines that "signal loss for a certain period of time or more from the control unit of the aircraft 30 or reception of an abnormal signal from the control unit of the aircraft 30", "signal loss for a certain period of time or more from the remote signal transceiver or reception of an abnormal signal from the remote signal transceiver", "signal loss for a certain period of time or more from the ground station or reception of an abnormal signal from the ground station when there is communication with a ground station (including a relay station)", "based on the position information of the aircraft 30, the aircraft 30 is approaching or entering a prohibited area, or deviating from the planned route", "the remaining amount of power source (battery) or fuel of the aircraft 30 is below a specified value", "the acceleration of the aircraft 30 is below a specified value or above a specified value". This occurs when it is determined that one or more of the following conditions have occurred: "The angular velocity of the aircraft 30 is equal to or greater than a specified value," "The attitude angle of the aircraft 30 is equal to or greater than a specified value (for example, tilted 45° or more from the horizontal)," "The aircraft 30 is approaching an obstacle that may cause damage to the aircraft 30 (detected by a laser sensor (such as LiDAR) or an infrared sensor, or by a vision sensor and image analysis)," "If the aircraft 30 is capable of carrying humans, an emergency situation has occurred for a person inside the aircraft 30 (detected by an emergency signal being transmitted from an emergency signal transmission device)," or "A fatal malfunction of equipment installed in the aircraft 30 has occurred."

[0047] In addition, the trigger device may be equipped with a stopping unit that is capable of sending a signal to the propulsion device to stop the propulsion device when the abnormal state determination unit determines that the aircraft is in an abnormal state.

[0048] In the above-mentioned configuration, when the abnormal state determination unit determines that an abnormal state occurs based on a signal from a detection unit that detects that an aircraft or the like on which the safety device 100 is mounted is falling, the trigger device transmits a trigger signal to the gas generator 17. When the gas generator 17 receives the trigger signal and is activated, gas is generated. Then, the piston member 10 is propelled upward in the cylinder 14 by the pressure of the gas generated by the activation. As a result, the push-up member 15 having the bottomed tubular portion 19 connected to the rod-shaped portion 10b of the piston member 10 is propelled (projected) upward in the container 18. As a result, the lid portion 21 is removed, the open end of the container 18 is opened, and the pilot chute 16 is ejected outward (upward in the plane of the paper of FIG. 1 and FIG. 3) from within the container 18. At this time, the piston member 10 and the tubular member 4 move upward, but the tubular member 4 collides with the stopper member 23 and is plastically deformed. This reduces the effect of the operation of the piston member 10 on the entire safety device 100. In particular, it reduces the influence on the push-up member 15 connected to the piston member 10. Then, the pilot chute 16 is deployed after being ejected from the container 18. Next, the main parachute is pulled out of the main parachute storage section 63 via the connecting member connected to the pilot chute 16, and then deployed.

[0049] As described above, in this embodiment, the pilot chute ejection section 62 and the main parachute storage section 63 are arranged in parallel in a divided manner, and the actuator 1 is (1) arranged at a position offset from the geometric center of the bottom surface of the container 18 (here, at a position at a predetermined distance or more from the arc part of the sector cross section), and (2) arranged at a position offset from the center of the entire safety device 60, not at the center of the entire safety device 60. Therefore, according to this embodiment, it is possible to provide a safety device 100 that not only has excellent safety performance, but also allows the attachment position to the flying object 30 to be the side of the fuselage 31. In addition, compared to the case where the actuator 1 is arranged at the geometric center of the sector cross section, the space between the arc of the sector cross section and the actuator 1 is larger, making it easier to accommodate the pilot chute 16. In other words, compared to the case where the actuator 1 is arranged at the geometric center of the sector cross section, the accommodation of the pilot chute 16 in the container 18 is improved. In addition, the actuator 1 is not provided at the center of the entire safety device 60, but at a position offset from the center of the entire safety device 60, and can be separated from the pilot chute ejection section 62 (pilot chute 16) and stored in section 61b of the mounting member 61. This makes it easier to store the main parachute than if the mounting member 61 were not divided into sections.

[0050] In addition, by making the mounting position of the safety device 100 on the flying body 30 overlap with the propulsion direction of the fuselage 31 as shown in Figure 1, air resistance can be reduced compared to when the safety device is mounted to the center of the upper part of the fuselage of a conventional flying body, and battery power consumption or fuel consumption can be reduced.

[0051] <Second embodiment> Next, an aircraft equipped with a safety device according to a second embodiment of the present invention will be described with reference to Figs. 8 to 13. Fig. 9 is also a cross-sectional view taken along the line BB in Fig. 10. Furthermore, unless otherwise specified, the same parts as those in the first embodiment will be designated by reference numerals with the same last two digits, and the description thereof may be omitted. Furthermore, in this embodiment, the same parts as those in the first embodiment are used, unless otherwise specified.

[0052] The flying object in this embodiment differs from the first embodiment mainly in that (1) the cross section of the container 162 is formed to have a shape that approximates a circle having a chord (a circle with a portion cut out) (see Figures 8, 10, 11, and 12), (2) the shape of the support portion 120 and the cover portion 121 of the push-up member 115 are shaped to imitate the cross section of the container 162 (see Figure 13), (3) the installation position of the actuator 101 is offset from the geometric center of the cross section of the container 162 (see Figure 13), and (4) an air vent 126 and a movement prevention member 127 are formed in the support portion 120 of the push-up member 115 (see Figures 8 and 9).

[0053] As described above, container 162 is formed so that its cross section resembles a circle having a chord in part, but the part including the chord of container 162 is flat part 118A (see FIG. 12(b)). Lid part 121 is formed so as to be able to close the opening of container 162.

[0054] The air vents 126 are provided between each of the movement prevention members 127 in order to reduce the effect of negative pressure generated between the bottom of the pilot chute 116 and the support portion 120 during operation, thereby making it easier for the pilot chute 116 to be ejected.

[0055] The movement prevention member 127 is formed to prevent the pilot chute 116 from moving in the circumferential direction of the bottomed cylindrical portion 119 .

[0056] As described above, according to this embodiment, not only can the same effects as those of the first embodiment be achieved, but also push-up member 115 can be moved smoothly during activation, and pilot chute 116 can be quickly ejected. In addition, since movement prevention member 127 can prevent pilot chute 116 from shifting in the circumferential direction, it can be stored in container 118 in a state where it is not hindered from deploying during activation.

[0057] <Third embodiment> Next, an aircraft equipped with a safety device according to a third embodiment of the present invention will be described with reference to Figs. 14 to 16. Fig. 15 is also a cross-sectional view taken along the line CC in Fig. 16. Furthermore, unless otherwise specified, the same parts as those in the first embodiment are designated by reference numerals with the same last two digits, and the description thereof may be omitted. Furthermore, in this embodiment, the same parts as those in the first embodiment are used, unless otherwise specified.

[0058] The flying object in this embodiment differs from the first or second embodiment in that (1) the cross section of container 262 is formed to be circular (see Figures 14 and 16); (2) the shape of support portion 220 of push-up member 215 and lid portion 221 are shaped to match the cross section of container 262 (see Figure 16); (3) the installation position of actuator 201 is offset from the geometric center of the cross section of container 262 (see Figure 15); (4) an air vent 226 is formed in support portion 220 of push-up member 215 (see Figures 15 and 16); and (5) container 218 has an air vent 224 formed in the bottom portion and an air vent 225 formed in the side portion (see Figure 15).

[0059] The support portion 220 has a shape that roughly follows the cross-sectional shape of the container 262, but is formed so that a portion is missing on the side of the actuator 201, which is disposed at a position offset from the geometric center of the cross-section of the container 262.

[0060] As described above, according to this embodiment, not only can the same effects as those of the first embodiment be achieved, but also the push-up member 115 can be moved smoothly during operation, and the pilot chute 116 can be ejected quickly.

[0061] Although the embodiments of the present invention have been described above based on the drawings, the specific configuration is not limited to these embodiments. The scope of the present invention is indicated by the claims, not by the description of the above embodiments, and further includes all modifications within the meaning and scope of the claims. For example, the present invention includes the following modifications.

[0062] In the safety device according to each of the above embodiments, the bottom of the container is fixed to the airframe of the flying object via the mounting member, but it may be directly fixed to the airframe or the mounting member by means of a rubber band, a belt, a string, or other means (mechanical joint, bolt, fastener, adhesive). For example, it may be the pilot chute ejection section according to the modified example shown in Figs. 17 to 28. Each modified example will be described below. Note that, unless otherwise specified, the same parts as those in the first embodiment are designated by the same reference numerals with the last two digits, and the description may be omitted. In addition, in the following modified examples 1 and 2, unless otherwise specified, the same parts as those in the first embodiment are used. In addition, in the following modified examples 3 and 4, unless otherwise specified, the same parts as those in the second embodiment are used.

[0063] <Variation 1> 17 to 19 differs from the first embodiment in that a plurality of belt holders 318a capable of being held through a belt member (not shown) for fixing to an aircraft (not shown) or an attachment member (not shown) are provided outside of storage unit 318. Specifically, two belt holders 318a are provided in parallel along the periphery of the fan-shaped curved surface outside storage unit 318. This allows pilot chute ejection unit 362 to be fixed to the aircraft or the attachment member by fastening a belt passed through belt holder 318a to the aircraft or the attachment member.

[0064] <Variation 2> 20 to 22 differs from the first embodiment in that a plurality of holding portions 418a, each having a through hole into which a bolt is inserted, are provided outside the accommodation portion 418. Specifically, as shown in Fig. 21(b), the holding portion 418a is integrally formed with the flat portion 418A on the right side surface, and the pilot chute ejection portion 462 can be fixed to the aircraft (not shown) or the attachment member by inserting a bolt into the through hole and screwing it into a female hole portion (not shown) provided in the aircraft (not shown) or the attachment member (not shown).

[0065] <Variation 3> 23 to 25 differs from the second embodiment in that a plurality of belt holders 518a capable of passing through a belt (not shown) for fixing to an aircraft (not shown) or an attachment member (not shown) are provided outside of the storage unit 518. Specifically, two belt holders 518a are provided in parallel along the periphery of the fan-shaped curved surface outside the storage unit 518. This allows the pilot chute ejection unit 562 to be fixed to the aircraft or the attachment member by fastening the belt passed through the belt holder 518a to the aircraft or the attachment member.

[0066] <Modification 4> 26 to 28 differs from the second embodiment in that a plurality of holding portions 618a, each having a through hole into which a bolt is inserted, are provided outside the accommodation portion 618. Specifically, as shown in Fig. 27(b), the holding portion 618a is integrally formed with the flat portion 618A on the right side surface, and the pilot chute ejection portion 662 can be fixed to the aircraft (not shown) by inserting a bolt into the through hole and screwing it into a female hole portion (not shown) provided in the aircraft (not shown) or an attachment member (not shown).

[0067] <Variation 5> Also, it may be a pilot chute ejection portion 762 according to a modified example shown in Fig. 29. A specific description will be given below, but unless otherwise specified, the same parts as those in the first embodiment will be designated by reference characters with the same last two digits and description thereof will be omitted.

[0068] The pilot chute ejection section 762 includes an actuator 701 and a pilot chute 716. The actuator 701 includes an igniter 784 having a cup-shaped case 785 that accommodates an ignition charge (not shown), a piston member 710 that is a part of a bottomed cylindrical section 719, a support section 720 having a flange-shaped section 720a formed so as to protrude radially from a side section of the piston member 710, a bottomed cylindrical container 718 that regulates the propelling direction of the piston member 710 via the outer edge of the support section 720, and a device 780. The pilot chute 716 is accommodated in the container 718 while being disposed on the support section 720. The igniter 784 also has a function of a cylinder that supports the piston member 710 slidably from the initial state (see FIG. 29) toward a lid section 721 provided at the opening of the container 718 due to its external shape during operation. Also, the device 780 may be a trigger device similar to that in the first embodiment, or various devices and equipment such as an abnormality detection device and a control device. In this configuration, when the igniter 784 is activated, the pilot chute 716 can be directly pushed out and deployed by the thrust of the piston member 710 in the upward direction of the paper surface of FIG. 29. Note that the open end of the container 718 is closed by the lid portion 721 in the initial state, and is detached from the open end by the thrust of the pilot chute 716.

[0069] This modification can also achieve the same effects as those of the first embodiment. In addition, a sufficient space can be provided between the container 718 and the actuator 701, making it easier to install the device 780.

[0070] <Variation 6> In addition, in the safety device according to each of the above embodiments, the container in the pilot chute ejection section is fixed to the airframe of the flying object via the mounting member, and the pilot chute is ejected, and the main parachute is ejected and deployed by the momentum of the ejection, but the present invention is not limited to this. For example, the safety device may be configured in the same manner as the pilot chute ejection section, but with a larger size, and the main parachute is stored instead of the pilot chute and ejected when activated. For example, a safety device 860 shown in FIG. 30 is one of the modified examples of the first embodiment. A specific description will be given below, but unless otherwise specified, the same parts as those in the first embodiment (but different sizes) are designated by the same reference numerals with the last two digits, and the description will be omitted. Furthermore, unless otherwise specified, the safety device 860 has the same configuration as the pilot chute ejection section 362 of the modified example 1, except for the use of the main parachute instead of the pilot chute and the size.

[0071] The safety device 860 differs from the safety device 60 of the first embodiment in that (1) it is provided with a launching section (not shown) that houses a main parachute (not shown) instead of a pilot chute, (2) the container (not shown) and the lid section 821 are sized to be able to store the main parachute, (3) an actuator (not shown) is used that generates a driving force capable of launching the main parachute, (4) a pilot chute is not provided, and (5) no attachment member is used. The main differences are that (6) it is directly attached to the aircraft body 831, (7) the container (not shown) and the lid portion 821 have a shape (here, the flat portion 821a) that imitates the external shape 831a of the aircraft body 831, (8) it has a belt member 870 whose one and other ends are fixed to the external shape 831a of the aircraft body 831 by belt fixing portions 871, and (9) it has multiple belt holding portions 818a that can be held (fixed) to the aircraft body 831 through the belt member 870.

[0072] In this modification, as in the first embodiment, the actuator is provided at a position offset from the geometric center of the bottom surface of the container (here, at a position that is a predetermined distance or more away from the distance between the arc of the sector cross section and the geometric center), so that the space between the arc of the sector cross section and the actuator is larger. Therefore, compared to the case where the actuator is provided at the geometric center of the sector cross section, it is easier to store the main parachute in the container. In addition, since the container and the lid portion 821 have a shape (here, the flat portion 821a) that imitates the external shape 831a of the body 831 of the aircraft, it is easy to attach the safety device 860 to the external shape 831a of the body 831 of the aircraft using the belt member 870.

[0073] <Variation 7> Another example of a modification of the first embodiment is a safety device 960 shown in Fig. 31. A specific description will be given below, but unless otherwise stated, the same parts as those in the first embodiment (but different sizes) will be given reference numbers with the same last two digits and the description will be omitted. Furthermore, unless otherwise stated, the safety device 960 has the same configuration as the pilot chute launching section 462 of modification 2, except for the size and the use of a main parachute instead of a pilot chute.

[0074] The safety device 960 differs from the safety device 60 of the first embodiment mainly in that (1) it is equipped with a launch section (not shown) that stores a main parachute (not shown) instead of a pilot chute, (2) the container (not shown) and the lid section 921 are sized to store the main parachute, (3) an actuator (not shown) is used that generates a driving force capable of launching the main parachute, (4) a pilot chute is not provided, (5) it is attached directly to the body 931 of the aircraft without using any mounting member, (6) the container (not shown) and the lid section 921 have a shape (here, the flat section 921a) that imitates the external shape 931a of the body 931 of the aircraft, and (7) the container (not shown) is provided with multiple holding sections 918a that can be held (fixed) to the body 931 of the aircraft by bolts 970.

[0075] In this modification, as in the first embodiment, the actuator is provided at a position offset from the geometric center of the bottom surface of the container (here, at a position that is a predetermined distance or more away from the distance between the arc of the sector cross section and the geometric center), so that the space between the arc of the sector cross section and the actuator is larger. Therefore, compared to the case where the actuator is provided at the geometric center of the sector cross section, it is easier to store the main parachute in the container. In addition, since the container and the lid 921 have a shape (here, the flat portion 921a) that imitates the external shape 931a of the body 931 of the aircraft, it is easy to attach the safety device 960 to the external shape 931a of the body 931 of the aircraft using the bolt 970.

[0076] <Variation 8> A modified example of the second embodiment is a safety device 1060 shown in Fig. 32. A specific description will be given below, but unless otherwise stated, the same parts as those in the second embodiment (but different sizes) are designated by reference characters with the same last two digits and description will be omitted. Furthermore, unless otherwise stated, the safety device 1060 has the same configuration as the pilot chute launching section 562 of the modified example 3, except for the size and the use of a main parachute instead of a pilot chute.

[0077] The safety device 1060 differs from the safety device 160 of the second embodiment in that (1) it is provided with a launching section (not shown) that stores a main parachute (not shown) instead of a pilot chute, (2) the container (not shown) and the lid section 1021 are sized to store the main parachute, (3) an actuator (not shown) is used that generates a driving force capable of launching the main parachute, (4) a pilot chute is not provided, and (5) the safety device 1060 is attached to the aircraft without using an attachment member. The main differences are that (6) it is directly attached to the body 1031; (7) the container (not shown) and the lid portion 1021 have a shape (here, the flat portion 1021a) that imitates the external shape 1031a of the body 1031 of the aircraft; (8) it has a belt member 1070 whose one and other ends are fixed to the external shape 1031a of the body 1031 of the aircraft by belt fixing portions 1071; and (9) it has multiple belt holding portions 1018a that can be held (fixed) to the body 1031 of the aircraft through the belt member 1070.

[0078] In this modified example, as in the second embodiment, the actuator is provided at a position offset from the geometric center of the bottom surface of the container (here, at a position that is a predetermined distance or more greater than the distance between the geometric center and an arc of a cross section that is approximating a circle with a chord (a partially cut-out circle)), so that the space between the arc of the cross section and the actuator is larger. Therefore, compared to the case where the actuator is provided at the geometric center of the cross section, it is easier to store the main parachute in the container. In addition, since the container and the lid portion 1021 have a shape (here, the flat portion 1021a) that imitates the external shape 1031a of the body 1031 of the aircraft, the safety device 1060 can be easily attached to the external shape 1031a of the body 1031 of the aircraft using the belt member 1070.

[0079] <Variation 9> Also, a modified example of the second embodiment is a safety device 1160 shown in Fig. 33. A specific description will be given below, but unless otherwise stated, the same parts as those in the second embodiment (but different sizes) are given reference numerals with the same last two digits and the description will be omitted. Furthermore, unless otherwise stated, the safety device 1160 has the same configuration as the pilot chute launching section 662 of the modified example 4, except for the size and the use of a main parachute instead of a pilot chute.

[0080] The safety device 1160 differs from the safety device 160 of the second embodiment mainly in that (1) it is equipped with a launch section (not shown) that stores a main parachute (not shown) instead of a pilot chute, (2) the container (not shown) and the lid section 921 are sized to store the main parachute, (3) an actuator (not shown) is used that generates a driving force capable of launching the main parachute, (4) a pilot chute is not provided, (5) it is attached directly to the body 1131 of the aircraft without using any mounting member, (6) the container (not shown) and the lid section 1121 have a shape (here, the flat section 1121a) that imitates the external shape 1131a of the body 1131 of the aircraft, and (7) the container (not shown) is provided with multiple holding sections 1118a that can be held (fixed) to the body 1131 of the aircraft by bolts 1170.

[0081] In this modified example, as in the second embodiment, the actuator is provided at a position offset from the geometric center of the bottom surface of the container (here, at a position that is a predetermined distance or more greater than the distance between the geometric center and the arc of the cross section of a shape that approximates a circle with a chord (a circle with a part cut out)), so that the space between the arc of the cross section and the actuator is larger. Therefore, it is easier to store the main parachute in the container compared to the case where the actuator is installed at the geometric center of the cross section. In addition, since the container and the lid 1121 have a shape (here, the flat portion 1121a) that imitates the external shape 1131a of the body 1131 of the aircraft, the safety device 1160 can be easily attached to the external shape 1131a of the body 1131 of the aircraft using the bolt 1170.

[0082] <Modification 10> An airbag device may be provided on the lower part of the aircraft body of each of the above embodiments and modifications. In order to absorb the impact of a fall regardless of the direction, a plurality of airbag devices may be provided on the side of the aircraft body so that the plurality of airbags cover the entire aircraft body when deployed. For example, an example of this airbag device is shown in FIG. 34.

[0083] As shown in FIG. 34, an aircraft airbag device 1211 according to this modified example includes an airbag 1212 made of, for example, a cloth, an intake pipe 1213 provided in the airbag 1212 so as to communicate with an internal space 1212a of the airbag 1212, and an air supply device 1214 provided corresponding to the intake pipe 1213.

[0084] The airbag 1212 is initially folded and extends in the vertical direction. The suction pipe 1213 is provided at the upper end of the airbag 1212. The air supply device 1214 includes a fan 1214a arranged in the suction pipe 1213 and supplying outside air to the internal space 1212a through the suction pipe 1213, and a rotating member 1214b supporting the fan 1214a and rotating about its axis. When the vehicle falls, the rotating member 1214b receives power from a power supply source 1215 and rotates, causing the fan 1214a to rotate, so that the outside air is introduced into the internal space 1212a through the suction pipe 1213.

[0085] In this modification, a lithium ion battery can be used as the power supply source 1215. The power supply source 1215 may be provided on the aircraft side or in the air supply device 1214.

[0086] Before deployment, the airbag 1212 is folded in an accordion-like shape as shown in FIG. 34, and after deployment, it expands into a substantially spherical shape. The airbag 1212 is provided with a hole 1212b, so that a part of the outside air introduced into the internal space 1212a of the airbag 1212 can flow out to the outside as necessary. This stabilizes the attitude of the airbag 1212 after deployment of the airbag 1212. In addition, if the size of the hole 1212b is appropriately adjusted, it is possible to realize a function of venting the internal space 1212a when the airbag 1212 collides with an object so that the repulsive force is too large and the airbag 1212 does not bounce when the airbag 1212 collides with the object. In addition, in FIG. 34, for example, a suction pipe 1213 can be provided so as to be inserted into the center of the drone body (not shown) extending horizontally in FIG. 34.

[0087] As described above, according to the airbag device 1211 of this modified example, when the vehicle falls, the air supply device 1214 receives power and rotates the fan 1214a, so that outside air is introduced into the airbag 1212 through the intake pipe 1213. As a result, the airbag 1212 starts to unfold from a folded state and inflates into a substantially spherical shape.

[0088] In this modification, gas is supplied into the airbag 1212 by the fan 1214a, but the present invention is not limited to this. For example, a gas generator may be used. The gas generator may be an igniter alone, or a gas generator equipped with an igniter and a gas generating agent. A hybrid or stored type gas generator may be used in which a gunpowder-type igniter is used to break the seal of a small gas cylinder and the gas inside is discharged to the outside. In this case, the pressurized gas in the gas cylinder may be a non-flammable gas such as argon, helium, nitrogen, or carbon dioxide, or a mixture of these. In addition, in order to reliably propel the piston when the pressurized gas is released, the gas generator may be equipped with a heating element made of a gas generating agent composition or a thermite composition. In addition, the airbag device may be one in which air is introduced into the airbag by utilizing natural intake.

[0089] <Other Modifications> As explained in the safety devices of each of the above embodiments and variations, each actuator is positioned at a position offset from the geometric center of the cross-sectional shape (or bottom surface) of the container, but the actuator may be positioned anywhere as long as each actuator is positioned at a position offset by a specified distance or more from a line connecting any of the wall surfaces (curved, flat, etc.) of the container to the geometric center, thereby creating sufficient space to store a parachute.

[0090] As described in the above embodiments and modifications, each safety device has a flat surface conforming to a flat surface of a part of the body of the flying object, but is not limited to this. That is, as long as at least a part of the outer shape of each safety device that comes into contact with the body of the flying object conforms to the shape of the contact part on the body, the safety device may have any shape.

[0091] In the safety devices of the above-described embodiments and modified examples, a gas generator is used as a power source. However, the configuration is not limited as long as it is possible to impart a driving force to the sliding member for propelling the sliding member along the cylinder, and for example, an elastic body such as a spring may be used.

[0092] In addition, in the safety devices of the above-mentioned embodiments and modified examples, a cylindrical container having a cross section that is fan-shaped, a cross section that is approximating a circle with a chord (a circle with a part cut out), a circle, or the like is used, but the container is not limited to this, and may be formed into other shapes such as a polygonal cross section, such as a rectangular tube with a square cross section. In other words, the container may have a flat surface on part of its outer shape. In addition, at least a part of the outer shape of the container may be shaped to match the mounting position of the aircraft body, making it easier to mount it on the aircraft body.

[0093] In addition, in the above-mentioned embodiments and modifications, when a parachute is used as the projectile, the parachute may be packed. This allows a cartridge type in which only the parachute can be replaced. The packing is configured to break or peel off when activated.

[0094] Furthermore, in each of the above embodiments, a parachute is given as an example of the projectile, but the projectile may be anything including a lift-generating member, a net-like member for capture or catching, a fire extinguisher, a life preserver, medicine, or the like. Examples of the lift-generating member include a parafoil, a Rogallo-type parachute, a single-surface-type parachute, an airplane wing, a propeller, and a balloon. In addition, when the lift-generating member has a control line, it is preferable that the safety device is provided with a steering mechanism that can change the inclination angle of the projected lift-generating member by using the control line. This steering mechanism includes, for example, a plurality of reels that wind up each of a plurality of control lines connected to the lift-generating member, and a motor that powers these reels. The control line is wound up or unwound by driving the motor, so that the lift-generating member can be pulled or unwound as appropriate. [Explanation of symbols]

[0095] 1, 101, 201, 701 Actuator 2, 102, 202, 302, 402, 502, 602 base 3, 103, 203 Cylindrical member 4, 103, 203 Tubular members 5, 105, 205 Retaining member 6, 106, 206 space 10, 110, 210, 710 Piston parts 10a, 110a, 210a Main body 10b, 110b, 210b Rod part 10c, 110c, 210c hole 10d, 110d, 210d Female thread 11, 12, 111, 112 Sealing material 13, 113, 213 holes 14, 114, 214 cylinders 14a, 114a, 214a through hole 15, 115, 215 Push-up member 16, 116, 216 Pilot Shoot 17, 117, 217 Gas generator 17a, 117a, 217a Cup body 18, 118, 218, 318, 418, 518, 618, 718 container 19, 119, 219, 719 Bottomed cylindrical part 19a, 119a, 219a bottom 20, 120, 220, 720 Support part 21, 121, 221, 321, 421, 521, 621, 721, 821, 921, 1021, 1121 Lid 23, 123, 223 Stopper parts 23a, 23b, 123a, 123b, 223a, 223b Groove 25, 126, 224, 225, 226 Ventilation holes 30 Flying Objects 31, 131, 231, 831, 931, 1031, 1131 Aircraft 32 Propulsion mechanism 33 Legs 50, 150, 250 bolt parts 50a, 150a, 250a head 50b, 150b, 250b male thread 51, 52, 53, 151, 152, 153, 252, 253 Hole 53a, 153a, 253a Insertion opening 60, 160, 260, 860, 960, 1060, 1160 safety device 61, 161, 261 Mounting parts 62, 162, 262, 362, 462, 562, 662, 762 Pilot chute ejection section 63, 163, 263 Main parachute storage area 318a, 818a, 1018a Belt holder 418a, 918a, 1118a holding part 784 Igniter 870, 1070 Belt material 871, 1071 Belt fixing part 970, 1170 volts 831a, 931a, 1031a, 1131a Flat section 1211 Airbag device 1212 Airbag 1212a Interior space 1212b hole 1213 Suction pipe 1214 Air supply system 1214a Fan 1214b Rotating parts 1215 Power supply source

Claims

1. A sliding member; an actuator having a power source that generates a driving force for sliding the sliding member in one direction; A support portion extending from the sliding member and supporting the projectile in an initial state; a container that contains at least the sliding member, the actuator, the support, and the projectile; Equipped with a bottom portion of the actuator is fixed to a bottom portion of the container in a state where the bottom portion of the actuator is disposed at a position offset from a geometric center of the bottom portion of the container; The support portion has a shape that conforms to the shape of the bottom surface of the container, A safety device, wherein at least a part of the support portion, which faces a bottom portion of the actuator in a sliding direction of the sliding member, is connected to the sliding member.

2. A device that can be attached to the exterior of an aircraft, 2. The safety device according to claim 1, wherein at least a portion of the outer shape of the container is formed to conform to the outer shape of a predetermined portion of the flying object.

3. A device that can be attached to the exterior of an aircraft, The safety device described in claim 1, further comprising a trigger device that transmits an automatic start-up signal to the actuator for automatically starting the actuator when the flying object is in an abnormal state, or transmits a start-up signal to the actuator for starting the actuator when a trigger signal is received.

4. The flying object includes a propulsion device that propels the flying object, The trigger device is an abnormality determination unit that determines whether the flying object is in an abnormal state; a stop unit that is capable of stopping the propulsion device by transmitting a signal to the propulsion device when the abnormal state determination unit determines that the flying object is in an abnormal state; and 4. The safety device of claim 3, further comprising:

5. the projectiles are a pilot chute and a main parachute; The main parachute is connected to the pilot chute via a connecting member, The container has a first container portion and a second container portion, The first housing portion houses the pilot chute and is provided with the actuator that ejects the pilot chute, 5. The safety device according to claim 1, wherein the second storage section stores the main parachute.

6. 5. The safety device according to claim 1, wherein the projectile is one or more of a net-like member for catching or trapping, a fire extinguisher, a life-saving device, and a medicine.

7. The aircraft and A safety device according to any one of claims 1 to 6, which is coupled to the airframe; a propulsion mechanism coupled to the vehicle body for propelling the vehicle body; An aircraft characterized by comprising:

Images