Safety devices, and aircraft equipped with safety devices

Abstract

To provide a safety device having a light-weight actuator as compared with conventional one even when the weight of parachute gets heavier, and to provide a flying body provided with the safety device.SOLUTION: A safety device 100 includes an actuator 1, an injection object 16 which is injected in one direction by actuation of the actuator 1, a bottomed cylindrical housing cover 18 which houses the actuator 1 and the injection object 16 and an approximately disc-shaped bottom part 21 which closes an opening end part of the housing cover 18. The actuator 1 includes a second sliding member 10 which is abutted onto the other end of a first sliding member 18d in the initial state, a cylinder 14 which houses the second sliding member 10, injects the first sliding member 18d to the outer side upon actuation and is provided with a stopper 13 for restraining the second sliding member 10, a base stand 2 which fixes one end part of the cylinder 14 by caulking and attaches one end part of the cylinder via a central hole part 25 of the bottom part 21, and a gas generator 17 as a power source for displacing the second sliding member 10 in the cylinder 14.SELECTED DRAWING: Figure 1

Description

Technical Field

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[0001] The present invention relates to a safety device for ejecting projectiles such as parachutes or paragliders, and an aircraft equipped with such a safety device.

Background Art

[0002] In recent years, with the development of autonomous control technology and flight control technology, the industrial use of aircraft equipped with multiple rotors, such as drones, for example, has been accelerating. A drone flies by rotating a plurality of rotors in a balanced manner at the same time, for example. Ascent and descent are performed by increasing and decreasing the rotational speed of the rotors, and forward and backward movement can be achieved by tilting the aircraft through increasing and decreasing the rotational speed of the rotors. Such aircraft are expected to expand globally in the future.

[0003] On the other hand, the risk of falling accidents of the above-mentioned aircraft is regarded as dangerous, which is an obstacle to the popularization of aircraft. In order to reduce such a risk of falling accidents, a parachute device for aircraft is being commercialized as a safety device.

[0004] For example, as an example of the above-mentioned parachute safety device, the following Patent Document 1 is known. This safety device operates an actuator in a container and slides a piston (sliding member) to eject a parachute.

Prior Art Documents

Patent Documents

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Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] Therefore, the present invention relates to a parachute Or paragliding, etc. The objective is to provide a safety device that allows for lighter actuators compared to conventional devices, even when the overall weight increases, and to provide an aircraft equipped with such a safety device. [Means for solving the problem]

[0008] (1) The safety device according to the present invention comprises a container having a top plate, a side portion and a bottom portion, a cylindrical cylinder having an opening on the top plate side, and a first sliding member having one end connected to the top plate, or provided inside the cylinder such that when it slides inside the cylinder during operation, one end abuts against the top plate, It is separate from the first sliding member, The device comprises an actuator provided at the bottom, having a second sliding member that is provided to contact the other end of the first sliding member in an initial state and is slidable within the cylinder, and a power source that generates a driving force to slide the second sliding member toward the top plate portion and inject the top plate portion via the first sliding member, and an injection material contained in the container, wherein a stopper is provided at the opening of the cylinder to restrain the movement of the second sliding member, and the stopper has an opening through which the first sliding member can slide. Note that "one end is connected to the top plate portion" includes cases where one end of the first sliding member is connected to the top plate portion, and cases where the top plate portion and the first sliding member are integrally molded.

[0009] (2) In the safety device described in (1) above, it is preferable that the top plate portion and the side portion are integrally connected or integrally molded as a bottomed cylindrical member.

[0010] (3) From another perspective, the safety device in (1) above may be a bottomed cylindrical member in which the side portion and the bottom portion are integrally connected or integrally molded.

[0011] (4) The aircraft according to the present invention comprises an airframe, a safety device according to any one of (1) to (3) above that is coupled to the airframe, and a propulsion mechanism that is coupled to the airframe and propels the airframe. It is characterized by being equipped with [the following features]. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a safety device that allows for a lighter actuator compared to conventional devices, even when the weight of the parachute increases, and an aircraft equipped with the safety device. [Brief explanation of the drawing]

[0013] [Figure 1] This is a cross-sectional view showing the initial state of a safety device according to an embodiment of the present invention. [Figure 2] (a) is a plan view of the safety device in Figure 1, and (b) is a perspective view of the safety device in Figure 1. [Figure 3] This is a magnified view of a part of the safety device shown in Figure 1. [Figure 4] This figure shows an example of an aircraft equipped with the safety device shown in Figure 1. [Figure 5] Figure 1 is a cross-sectional view showing the safety device in operation. [Figure 6] This figure shows the state after the safety device in Figure 1 has been activated. [Figure 7] This is a partially enlarged view illustrating the first sliding member and top plate portion of a safety device according to a modified embodiment of the present invention. [Modes for carrying out the invention]

[0014] Hereinafter, a safety device and a flying object according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6. Note that FIG. 1 is also a cross-sectional view taken along the line A-A of the safety device shown in FIG. 2(a).

[0015] As shown in FIG. 1, the safety device 100 includes an actuator 1, a projectile 16 that is ejected in one direction (upward in FIG. 1) by the operation of the actuator 1, a bottomed cylindrical housing lid 18 (bottomed cylindrical member) that houses the actuator 1 and the projectile 16, and a substantially disk-shaped bottom 21 that closes the open end of the housing lid 18. Note that the housing lid 18 and the bottom 21 constitute a housing. In the present embodiment, the projectile 16 is a parachute or a paraglider.

[0016] The actuator 1 includes a second sliding member 10 that abuts on the other end of the first sliding member 18d in the initial state, a cylinder 14 that houses the second sliding member 10 and is provided with a stopper 13 for ejecting the first sliding member 18d outward (upward in FIG. 1) during operation to stop the second sliding member 10, a base 2 (squib holder) to which one end of the cylinder 14 is caulked and fixed and is attached through a central hole 25 of the bottom 21, and a gas generator (such as a micro gas generator) 17 as a power source for moving the second sliding member 10 within the cylinder 14.

[0017] The base 2 includes a substantially cylindrical member 2A that holds the gas generator 17 that generates power for sliding the second sliding member 10 on the cylinder 14 side, and a flange portion 2B provided on the side opposite to the cylinder 14 side of the substantially cylindrical member 2A.

[0018] The flange portion 2B includes a plurality of hole portions 2a used for attachment to the bottom portion 21, a plurality of fixing hole portions (not shown) used for attachment to the airframe 31 of the flying object 30 described later, and an insertion port 2c used for inserting a connector (not shown) for energizing the lower electrode 17b of the gas generator 17, and is processed into a substantially U-shaped and substantially horseshoe shape (not shown). Female threads are cut on the inner wall of the hole portion 2a so that a bolt 28 described later can be screwed in. Also, female threads are cut on the inner wall of the fixing hole portion (not shown), and a bolt (not shown) is screwed from the airframe 31 side into the flying object 30 described later so that the base 2 can be fixed to the airframe 31.

[0019] The second sliding member 10 is a disk-shaped member having an annular groove portion 10a provided in the circumferential direction on the side portion, and is made of a metal such as aluminum or an alloy. Also, the diameter of the second sliding member 10 is formed larger than the diameter of the opening portion of the stopper 13. That is, the stopper 13 has a stopper function with respect to the second sliding member 10 during operation. Note that the diameter of the first sliding member 18d is smaller than the diameter of the opening portion of the stopper 13 so that it can pass through the stopper 13.

[0020] A seal member 11 such as an O-ring is provided in the groove portion 10a in the circumferential direction.

[0021] As shown in FIG. 3, the bottom portion 21 includes a cylindrical protruding portion 21a extending from the edge portion toward the housing lid 18 side, and a receiving member 21b provided so as to protrude toward the housing lid 18 side at a position sandwiching the opening end portion of the housing lid 18 facing the protruding portion 21a. Also, a reinforcing member 21e for reinforcing the bottom portion 21 is provided inside the bottom surface of the bottom portion 21.

[0022] As shown in Figure 3, the protruding portion 21a has a second through-hole 21c that penetrates towards the center of the bottom portion 21. Furthermore, on the outside of the protruding portion 21a, as shown in Figures 2 and 3, a cylindrical projection 21f is formed that communicates with the first through-hole 18b1 (described later) and includes a peripheral wall surrounding the outer circumference of the head portion 22a on its inside. This prevents the pin member 22 from being pulled out and the bottom portion 21 from being opened by inserting a nail puller or a flathead screwdriver. By inserting the pin member 22 into the second through-hole 21c and the first through-hole 18b1 (described later), an engagement mechanism is formed that engages the open end of the housing lid 18 with the protruding portion 21a. Here, although the protruding portion 21a is cylindrical in shape, it does not necessarily have to be cylindrical in shape, as long as it is provided facing the receiving member 21b and has the second through-hole 21c.

[0023] As shown in Figure 3, the receiving member 21b has a second through-hole 21d that penetrates towards the center of the bottom 21. The second through-hole 21d receives the tip of the pin member 22 when the pin member 22 is inserted into the second through-hole 21c and the first through-hole 18b1 (the tip of the pin member 22 is inserted into it), and the fixing between the opening end of the housing lid 18 and the bottom 21 can be made more robust.

[0024] As shown in Figure 3, the pin member 22 has a head portion 22a with a diameter larger than the second through hole 21c, and a rod-shaped portion 22b that is attached to one end of the head portion 22a and is inserted into and fitted into the first through hole 18b1, the second through hole 21c, and the second through hole 21d. The pin member 22 is provided with a locking portion (not shown) to prevent it from coming out after being inserted into the first through hole 18b1, the second through hole 21c, and the second through hole 21d before operation. Specific examples of such a pin member 22 include brush clip pins and trim clip pins, but it is not limited to these; any pin member 22 that has a locking portion (including those with relatively high frictional force on the surface of the rod-shaped portion 22b) to prevent it from coming out after being inserted into the first through hole 18b1, the second through hole 21c, and the second through hole 21d may be used. In this embodiment, as shown in Figure 2(a), a pair of pin members 22 are provided facing each other in the vertical direction of the paper. However, the embodiment is not limited to this, and for example, another pair of pin members 22 may be provided facing each other in the horizontal direction of the paper.

[0025] The reinforcing member 21e is a substantially disc-shaped member with a hole 21g (see Figure 1) formed in its center. It is used to reinforce the bottom surface of the bottom 21, support the injection-molded material 16, and protect it from the bolts 28. The reinforcing member 21e does not necessarily have to be a disc-shaped member, and any configuration is acceptable as long as it supports the injection-molded material 16 and protects it from the bolts 28.

[0026] As shown in Figures 1 and 2, the storage lid 18 is a substantially bottomed cylindrical member comprising a substantially disc-shaped top plate portion 18a, a cylindrical side portion 18b, a disc portion 18c, and an elongated cylindrical first sliding member 18d. The top plate portion 18a has a central hole portion 18a1 (see Figure 1) that is closed by the disc portion 18c, and a plurality of holes 18a2 (see Figure 2) provided around the hole portion 18a1 that communicate with the outside, and is formed at the upper end of the side portion 18b.

[0027] As shown in Figure 3, the side portion 18b has a first through hole 18b1 and a breakable portion 18b2 near the opening end. The breakable portion 18b2 is the point where it breaks when a force greater than a predetermined amount is applied to the first through hole 18b1 in the downward direction of the plane of the paper in Figure 3.

[0028] The disc portion 18c is integrally molded with the first sliding member 18d and is fixed to the storage lid 18 by multiple sets of bolts 23 and nuts 24, as shown in Figures 1 and 2.

[0029] The first sliding member 18d is integrally molded with the disc portion 18c, with its upper end connected to the disc portion 18c. Furthermore, the first sliding member 18d is hollow from its lower end to a certain point, making it lighter than a sliding member without this hollow.

[0030] Here, materials for forming the disc portion 18c and the first sliding member 18d include resins such as polycarbonate, polyoxymethylene, polyamide, and ABS resin (acrylonitrile, butadiene, styrene copolymer resin), as well as steel materials (SS400, S45C, etc.), metals such as aluminum, and alloys. These materials are selected and used according to the required strength.

[0031] Furthermore, by constructing the disc portion 18c and the first sliding member 18d from a different material with higher strength than the other parts of the housing lid 18 (top plate portion 18a, side portion 18b) (for example, the disc portion 18c and the first sliding member 18d being made of metal (such as iron), alloy, or composite reinforced material (such as fiber-reinforced plastic), and the other parts of the housing lid 18 being made of resin, etc.), and by making the second sliding member 10 a material with impact strength against the impact when it strikes the first sliding member 18d, the parts of the housing lid 18 other than the disc portion 18c only need to have the minimum necessary strength (for example, enough strength to protect the injection material 16 until operation), thus making the housing lid 18 lighter.

[0032] The gas generator 17 is positioned below the second sliding member 10, with the gas generator 17 press-fitted into the lower open end of the cylinder 14.

[0033] The gas generator 17 may use only an igniter, or it may be a gas generator equipped with both an igniter and a gas generating agent. Alternatively, a hybrid or stored-type gas generator may be used, which uses a gunpowder-type igniter to break the seal plate in a small gas cylinder and discharge the gas inside to the outside. In this case, the pressurized gas in the gas cylinder can be a non-flammable gas such as argon, helium, nitrogen, or carbon dioxide, or a mixture thereof. Furthermore, to ensure that the second sliding member 10 is reliably propelled 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, etc.

[0034] The injection material 16 is housed between the inner surface of the housing lid 18 and the inner surface of the bottom 21, folded and arranged to surround, for example, the outer surface of the cylinder 14. One end of the first connecting members, connecting members 41 and 42 (see Figures 5 and 6), is connected to a portion of the injection material 16, and the other end of the connecting members 41 and 42 is connected to the inside of the housing lid 18 (for example, to a hook or hole (not shown) provided in a location other than the position where the first sliding member 18d is connected on the disc portion 18c). Another end of the second connecting member, connecting member 43 (see Figure 6), is connected to another portion of the injection material 16, and the other end of the connecting member 43 is connected to the second sliding member 10. Here, one end of the connecting member 43 may be connected to the bottom 21 or the payload (for example, "flying object," "luggage," "measuring device for measuring the environment such as air or underwater"), and the connecting member 43 may consist of multiple connecting members.

[0035] Here, if the connecting members 41 and 42 are attached to the disc portion 18c, by making the disc portion 18c a material that can withstand the impact when it is pulled from the connecting members 41 and 42 during operation (metal (iron, etc.), alloy, or composite reinforced material (fiber-reinforced plastic, etc.)), it is only necessary to make the parts of the containment lid 18 other than the disc portion 18c with the minimum necessary strength (for example, enough strength to protect the injection material 16 until operation), the containment lid 18 can be made lighter. Furthermore, by adjusting the length of the connecting members 41 and 42 and / or the output of the actuator 1, it is possible to control how long after the containment lid 18 is injected the injection material 16 is pulled out.

[0036] In the configuration described above, when the gas generator 17 is activated when an aircraft, for example, equipped with the safety device 100, falls, the second sliding member 10 is propelled upward within the cylinder 14 by the pressure of the gas generated by the activation, starting from the initial state shown in Figure 1. At this time, the housing lid 18, including the first sliding member 18d, is pushed up. As a result, the breakable portion 18b2 of the housing lid 18 breaks, the open end of the housing lid 18 is opened, and the housing lid 18 detaches from the bottom 21, and the housing lid 18 is ejected upward while pulling up one end of the connecting members 41 and 42. Subsequently, as shown in Figure 5, when tension is applied to the connecting members 41 and 42, the ejected material 16 is pulled upward and ejected towards the housing lid 18. Then, as shown in Figure 6, after the ejected material 16 is deployed, the bottom 21 is suspended by the ejected material 16 via the connecting member 43, the second sliding member 10, and the cylinder 14.

[0037] As shown in Figure 4, the safety device 100 is connected and fixed to the aircraft body 31 of the aircraft 30 from the aircraft body 31 side by bolts (not shown) via fixing holes (not shown) of the base 2. Therefore, the aircraft 30 comprises an aircraft body 31, a safety device 100 connected to the aircraft body 31, one or more propulsion mechanisms (e.g., propellers, etc.) 32 connected to the aircraft body 31 and propelling the aircraft body 31, and a plurality of legs 33 provided on the lower part of the aircraft body 31.

[0038] With the safety device 100 configured as described above, it is not necessary to increase the driving force of the actuator 1 in accordance with the weight of the injected object 16, such as when the size of the injected object 16 increases. In other words, even if the weight of the injected object 16 increases, the driving force of the actuator 1 can be selected according to the size and weight of the top plate portion 18a and the side portions 18b, so the safety device 100 can be made lighter than conventional devices.

[0039] Furthermore, the safety device 100 with the above configuration stops the movement of the second sliding member 10 at the stopper 13 of the cylinder 14. However, in a configuration where, for example, the lid of the housing and the sliding member (for example, the first sliding member 18d and the second sliding member 10 are integrally molded) are separate, and the lid is pushed up by the sliding member, it was necessary to stop the entire sliding member at the hole in the cylinder. In other words, with the safety device 100 with the above configuration, it is only necessary to stop the second sliding member 10 (only a part of the sliding member), so the impact force involved in stopping is smaller than in the conventional design. Therefore, within an appropriate range, there is no structural problem even if the strength of the actuator 1 is reduced compared to the conventional design. That is, for example, by making the thickness of the cylinder 14 thinner than in the conventional design within an appropriate range, it is possible to make the actuator 1 lighter than in the conventional design.

[0040] Furthermore, as mentioned above, reducing the impact force can minimize the impact not only on the aircraft to which the safety device is attached, but also on mounting components such as mounting bands used to attach the safety device.

[0041] Furthermore, since the loss of injection energy can be reduced, when a gas generator is used as the driving force, the projectile can be ejected with a smaller amount of explosive.

[0042] Furthermore, since the injectable material 16, such as a parachute, is soft (film-like material, etc.), conventionally, when injected with a short stroke, the injectable material 16 would absorb the driving force of the gas generator 17, preventing effective utilization of that driving force. However, with the safety device 100 configured above, the injectable material 16 can be injected by being pulled out by the injected containment lid 18 (rigid body). In other words, even with a short stroke, the driving force of the gas generator 17 is transmitted to the containment lid 18 without loss, and the momentum of the injected containment lid 18 pulls up the injectable material 16, thus enabling effective utilization of that driving force. Therefore, even if the stroke of the actuator 1 is shortened, the injectable material 16 can be sufficiently injected, making the safety device 100 smaller and lighter than conventional models. In particular, since the overall length of the actuator 1 can be shortened compared to conventional models, the overall shape of the containment can be made flatter than conventional models. As a result, when the safety device 100 is mounted on the aircraft 30, the center of gravity becomes more stable than before, and air resistance during flight can be reduced.

[0043] Furthermore, with the safety device 100 configured above, the housing lid 18 is injected before the injection material 16 is injected, so there is no sliding resistance of the injection material 16 against the housing lid 18. Therefore, a reduction in the injection speed of the injection material 16 can be prevented.

[0044] Furthermore, with the safety device 100 configured as described above, since the flange portion 2B of the base 2 is provided on the outside of the bottom portion 21, the base 2 can be directly attached to the airframe 31 of the aircraft 30. As a result, the recoil during operation is received directly by the airframe 31, rather than through the bottom portion 21, but the impact on the bottom portion 21 during operation can be reduced, so the strength of the bottom portion 21 can be reduced compared to when the base 2 is provided inside the bottom portion 21. In other words, the strength of the bottom portion 21 can be safely reduced compared to before (for example, by designing the bottom portion 21 to be reduced to a safe predetermined thickness), and the bottom portion 21 as a whole can be made lighter than before while ensuring the same level of safety as before.

[0045] Furthermore, an aircraft 30 equipped with a safety device 100 having the configuration described above can be obtained.

[0046] Although embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments. The scope of the present invention is indicated by the claims rather than the above description of embodiments, and all modifications within the meaning and scope equivalent to the claims are included. For example, the present invention includes the following modifications:

[0047] For example, as shown in the partially enlarged views of Figures 7(a) and (b), the disc portion and the first sliding member may be separate components. A detailed explanation follows. Note that in the following modifications, symbols with the same last two digits are equivalent and therefore their explanation may be omitted. Also, parts not specifically described are the same as those in the above embodiment and therefore their explanation may be omitted.

[0048] Figure 7(a) shows a disc portion 118c and a first sliding member 118d having a flange portion at the end on the disc portion 118c side. The disc portion 118c and the first sliding member 118d are connected and integrated by fastening the flange portion of the first sliding member 118d to the disc portion 118c with a screw 130. This makes it possible to achieve the same effects as in the above embodiment.

[0049] Figure 7(b) shows a disc portion 218c and a first sliding member 218d having a flange portion at the end on the disc portion 218c side. The disc portion 218c and the first sliding member 218d are connected and integrated by bonding and fixing the flange portion of the first sliding member 218d to the disc portion 218c with an adhesive layer 240. This makes it possible to achieve the same effects as in the above embodiment.

[0050] Furthermore, although the above embodiment shows the disc portion 18c and the first sliding member 18d being integrally molded, the invention is not limited to this. For example, the disc portion and the first sliding member may be separate, with the upper end of the first sliding member in contact with the disc portion. When the first sliding member is pushed up by the second sliding member during operation and slides within the cylinder, the upper end of the first sliding member may abut against the disc portion (top plate portion), causing the top plate portion to be ejected. In this case, it is preferable that the first sliding member is connected to other members such as the cylinder, the second sliding member, and the payload by a connecting member such as a string.

[0051] Furthermore, the stopper 13 in the above embodiment may be of any size and shape that allows the first sliding member 18d to slide through and is capable of restraining the movement of the second sliding member 10. For example, instead of forming it into an annular shape by a diameter reduction process (such as crimping) as shown in Figure 1, a member (for example, an annular member or multiple protruding members) that protrudes toward the radial center on the inner wall near the opening of the cylindrical cylinder may be provided. Alternatively, instead of the cylinder 14, a bottomed cylindrical member may be used, in which a hole is formed at the bottom of a bottomed cylindrical cylinder, having a diameter large enough to allow the first sliding member to slide through and to restrain the second sliding member.

[0052] Furthermore, although the above embodiment shows a storage lid 18 in which the top plate portion 18a including the disc portion 18c and the side portion 18b are integrally connected, instead, for example, the top plate portion and the side portion may be separated. In this case, a bottomed cylindrical member in which the side portion and bottom portion are integrally molded may be used as the storage container, and the top plate portion may be used as the lid portion of the storage container, and the top plate portion and the first sliding member connected to the top plate portion may be injected.

[0053] Furthermore, in the above embodiment, a hole 18a2 was formed in the housing lid 18, but in order to ensure waterproofness, the hole 18a2 may not be formed. In this case as well, immediately after operation the housing lid 18 and the bottom 21 will separate and outside air will flow in, so the inside of the housing composed of the housing lid 18 and the bottom 21 will not become negatively pressurized during operation, and therefore it is not necessary to form an air intake or the like in the housing lid 18 or the bottom 21.

[0054] Furthermore, in the above embodiment of the storage lid 18, a separate disc portion 18c was attached to close the hole portion 18a1 of the top plate portion 18a, but it may also be integrally formed from the same material. In this case, the strength (impact strength) of the component may be strengthened to the necessary extent by making the thickness of the part corresponding to the disc portion 18c thicker than other parts, so as to achieve the same effect as the disc portion 18c in the above embodiment.

[0055] In the first connecting member of the above embodiment, there are two connecting members 41 and 42, but there may be one or three or more. Furthermore, the first connecting member of the above embodiment may be connected to any position on the housing lid 18 and the injection material 16 or payload, as long as the housing lid 18 and the injection material 16 are smoothly injected and deployed. Furthermore, the second connecting member of the above embodiment may be connected to any position on the injection material 16 or payload, as long as the injection material 16 is smoothly injected and deployed.

[0056] Alternatively, the cylindrical projection 21f in the above embodiment may be pressed inward from the outside to bring the inner wall (peripheral wall) of the cylindrical projection 21f into contact with the head portion 22a and crimped in place. This prevents the head portion 22a from detaching and scattering to the outside during operation.

[0057] Alternatively, a resin that functions as an adhesive may be filled and solidified between the head portion 22a and the inner wall (peripheral wall portion) of the cylindrical projection portion 21f in the above embodiment, thereby fixing the head portion 22a and the cylindrical projection portion 21f. This prevents the head portion 22a from detaching and scattering to the outside during operation.

[0058] Furthermore, the crimped head portion 22a and the cylindrical projection portion 21f may be further bonded and fixed with resin. This further prevents the head portion 22a from detaching and scattering to the outside during operation.

[0059] Alternatively, a snap-fit ​​type locking mechanism may be used instead of the engagement mechanism of the above embodiment. Examples of locking mechanisms include: (a) a recess provided on the inner wall of the opening end of the storage lid (not shown) and a protrusion provided on the outer wall side of a protrusion that protrudes from the bottom to the inside of the storage lid, which lock together; (b) a protrusion provided on the inner wall side of the opening end of the storage lid (not shown) and a recess provided on the outer wall side of a protrusion that protrudes from the bottom to the inside of the storage lid, which lock together; (c) a protrusion provided on the inner wall side of a bottom protrusion larger than the diameter of the storage lid (same as the above embodiment except that it does not have a second through hole 21c), which locks together; and (d) a recess provided on the inner wall side of a bottom protrusion larger than the diameter of the storage lid (same as the above embodiment except that it does not have a second through hole 21c), which locks together; and The protrusions here may be continuous annular projections or independent rod-shaped projections. The recesses here may be annular grooves if the protrusions are annular projections, or annular grooves or independent depressions if the protrusions are independent rod-shaped projections.

[0060] Furthermore, in the above embodiment, a portion of the base 2 was configured to be located outside the housing lid 18, but the entire base 2 may be configured to be located inside the housing lid 18.

[0061] Furthermore, although a gas generator was used as the power source in the above embodiment, the configuration is not limited as long as it is capable of providing the sliding member with the driving force necessary for the sliding member to propel itself within the cylinder. For example, an elastic body such as a spring, or a system using pressure from a gas cylinder, may also be used.

[0062] Furthermore, although the lid 18 is formed in a cylindrical shape in the above embodiment, it is not limited to this and may be formed in other shapes, such as a square tube.

[0063] Furthermore, in the above embodiment, if a parachute or paraglider is used as the projectile, the parachute or paraglider may be packed. The packing is configured to tear or peel off during operation.

[0064] Furthermore, while the above embodiment mentions a parachute or paraglider as the ejected object, it is not limited to these, and objects including a lift-generating member may also be ejected. Examples of lift-generating members include parafoils, Rogallo-type parachutes, single-surface parachutes, airplane wings, propellers, balloons, etc. Also, if the lift-generating member has a control line, it is desirable that the safety device be equipped with a steering mechanism that can change the inclination angle of the ejected lift-generating member using the control line. This steering mechanism may include, for example, a plurality of reels that each wind up a plurality of control lines connected to the lift-generating member, and a motor that powers these reels. By winding in or releasing the control lines by driving the motor, the lift-generating member can be pulled or released as appropriate.

[0065] Alternatively, the aircraft may be equipped with a safety device capable of launching a net instead of a parachute or paraglider. This allows the aircraft to hook onto a hook or protrusion by launching the net at the right time, thereby preventing the aircraft from falling to the ground. Furthermore, instead of a parachute or paraglider, the aircraft may be capable of launching medical supplies, cargo, etc.

[0066] Furthermore, the aircraft may be equipped with a safety device that allows an actuator to eject a deflated or folded lifebuoy (float) along with a drive mechanism (such as an inflation device including a gas generator), and the drive mechanism to inflate and unfold the lifebuoy. This prevents the aircraft from sinking and also serves as a marker for the recovery location in the event of a crash.

[0067] Furthermore, the aircraft may be equipped with a safety device that allows an actuator to eject a retracted or folded lifebuoy (float) and parachute together with a drive mechanism (such as an inflation device including a gas generator), and the drive mechanism to deploy the lifebuoy and parachute. This reduces the falling speed of the aircraft when it crashes, prevents the aircraft from sinking into water, and also serves as a marker for the recovery location in the event of a crash.

[0068] Alternatively, the aircraft may be equipped with a safety device that allows an actuator to eject a parachute along with a drive mechanism (such as a cutting device with a drive unit), and after the parachute is deployed, the drive mechanism cuts some of the multiple connecting members that connect the parachute to the aircraft, shifting the aircraft's center of gravity so that it falls sideways, and then using an airbag device provided on the side of the aircraft that is falling to mitigate the impact of a collision with the ground or the like.

[0069] Alternatively, the aircraft may be equipped with a safety device that allows an actuator to eject a so-called paramotor along with its drive mechanism (including a power supply and other drive components), and after the parachute or paraglider is fully deployed, the drive mechanism can drive the motor to rotate the propeller. This prevents the parachute or paraglider from becoming entangled in the propeller. A paramotor is a device that can fly by obtaining thrust from a power source (such as a motor-driven propeller rotater) attached to the harness portion of a parachute or paraglider.

[0070] Furthermore, the aircraft may be equipped with a safety device that allows an actuator to eject a sound-generating device along with a drive mechanism (including a power supply and other drive components), and the drive mechanism to activate the sound-generating device when the aircraft crashes, thereby alerting those in the surrounding area to danger.

[0071] Furthermore, the aircraft may be equipped with a safety device that allows an actuator to eject a lighting device (such as a flashlight) along with a drive mechanism (including a power supply and other drive components), and the drive mechanism to activate the lighting device when the aircraft crashes, thereby alerting those in the surrounding area to danger.

[0072] Alternatively, the aircraft may be equipped with a safety device that allows an actuator to eject a fire extinguisher along with a drive mechanism (including a power supply and other drive components), and the drive mechanism to activate the fire extinguisher in the event of a crash, thereby spraying fire extinguishing agent onto the aircraft and its surroundings.

[0073] Alternatively, the aircraft may be equipped with a safety device that uses an actuator to eject a pre-launched, ejectable payload with a parachute (for example, expensive equipment) along with a drive mechanism, and the drive mechanism deploys the parachute of the payload. This allows for focused protection of the parachute payload.

[0074] Alternatively, the aircraft may be equipped with a safety device that uses an actuator to eject an airbag-equipped payload (for example, expensive equipment) that has been pre-loaded in a ejectable manner, along with a drive mechanism (such as an inflation device including a gas generator), and inflates and deploys the airbag of the airbag-equipped payload. This allows for focused protection of the airbag-equipped payload.

[0075] Alternatively, the aircraft may be equipped with a safety device that allows an actuator to eject a distress signal transmitter along with a drive mechanism (including a power supply and other drive components), and the drive mechanism to activate the distress signal transmitter when the aircraft crashes, thereby transmitting a distress signal to the outside. This makes it possible to pinpoint the crash site if the aircraft crashes.

[0076] Alternatively, the aircraft may be equipped with a safety device that uses an actuator to eject a black box with a parachute (such as a flight recorder) along with a drive mechanism (such as an inflation device including a gas generator), and the drive mechanism to deploy the parachute of the black box when the aircraft crashes. This allows for focused protection of the black box with the parachute. As a result, flight data can be protected. [Explanation of Symbols]

[0077] 1 Actuator 2 bases 2A Cylindrical member 2B Flange section 2a, 18a1, 18a2, 21g, 25 holes 2c insertion slot 10 Second sliding member 10a Groove 11. Sealing member 13 Stopper 14 cylinders 16 Projectile 17 Gas generator 17b Electrode 18. Storage lid 18a Top panel 18b Side 18b1 1st through hole 18b2 Breakable portion 18c, 118c, 218c Disc section 18d, 118d, 218d First sliding member 21 Bottom 21a Projection 21b Receiving member 21c, 21d 2nd through hole 21e Reinforcement member 21f Cylindrical projection 22 Pin component 22a Head section 22b Rod-shaped part 23, 28 volts 24 nuts 30 flying objects 31 aircraft 33 Legs 41, 42, 43 Connecting members 100 safety equipment 130 screws 240 Adhesive layer

Claims

1. A container having a top plate, sides, and a bottom, An actuator provided at the bottom comprises: a cylindrical cylinder having an opening on the top plate side; a first sliding member having one end connected to the top plate, or provided inside the cylinder such that one end abuts against the top plate when sliding inside the cylinder during operation; a second sliding member separate from the first sliding member, provided so as to contact the other end of the first sliding member in an initial state, and capable of sliding inside the cylinder; and a power source that generates a driving force to slide the second sliding member toward the top plate side and eject the top plate via the first sliding member. The injection material contained in the aforementioned container, Equipped with, A stopper is provided at the opening of the cylinder to prevent the movement of the second sliding member. The stopper is a safety device characterized by having an opening through which the first sliding member can pass.

2. The safety device according to claim 1, characterized in that the top plate portion and the side portion are integrally connected or integrally molded as a bottomed cylindrical member.

3. The safety device according to claim 1, characterized in that the side portion and the bottom portion are integrally connected or integrally molded as a bottomed cylindrical member.

4. The aircraft and, A safety device according to any one of claims 1 to 3, which is coupled to the aircraft body, A propulsion mechanism coupled to the aircraft and propelling the aircraft, An aircraft characterized by having the following features.

Images