Safety device and aircraft equipped with safety device

Abstract

[Subject] Provide a safety device and an aircraft equipped with the safety device, in which the cover and the open end of the container are fixed more firmly before operation than in the prior art and are not easily affected by the external environment. [Solution] The safety device comprises: a piston member 10; a cylinder 14, which accommodates the piston member 10 and is provided with a hole 13 for the piston member 10 to protrude outward during operation; a push-up member 15, which is pushed in one direction by the piston member 10; an ejection object 16, which is supported and pushed up by the push-up member 15; and a gas generator 17, which moves the piston member 10 in the cylinder 14. The bottomed cylindrical portion 19 of the push-up member 15 has a hole 53, which has substantially the same shape as one end of the rod-shaped portion 12 and fits one end of the rod-shaped portion 12. The bottomed cylindrical portion 19 and the rod-shaped portion 12 are fastened and fixed by the bolt member 15.

Description

Technical Field

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

[0002] In recent years, with the development of autonomous control technology and flight control technology, the industrial use of aircraft with multiple rotors, such as drones, has also accelerated. For example, drones fly by rotating multiple rotors in a balanced manner at the same time, and can rise and fall by increasing or decreasing the number of rotor rotations, and can move forward and backward by tilting the body by increasing or decreasing the number of rotor rotations. It is foreseeable that this type of aircraft will develop globally in the future.

[0003] On the other hand, the risk of the above-mentioned aircraft crash is considered to be very dangerous, which hinders the popularization of aircraft. In order to reduce the risk of the crash, a parachute device for aircraft is commercialized as a safety device.

[0004] For example, as an example of the above-mentioned parachute safety device, the applicant has filed a related application of the following patent document 1. The safety device in the patent document 1 is as follows: Figure 1 As shown, it has: a piston member (sliding member); a cylinder that accommodates the piston member and is provided with a hole for the piston member to protrude outward during operation; a push-up member that is pushed up in one direction by the piston member; an ejection object that is supported and pushed up by the push-up member; and a gas generator that moves the piston member in the cylinder, the push-up member having a support portion that is arranged on the end side of the piston member based on the front end of the piston member in the moving direction of the piston member. In addition, the bottom of the push-up member is fixed to the front end of the piston member.

[0005] Prior art literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2020-1680 Summary of the invention

[0007] Problem that the invention aims to solve

[0008] In the above-mentioned patent document 1, the method for fixing the front end of the piston component to the bottom of the push-up component can be a method of fixing by bonding using an adhesive or the like, or a method of fastening and fixing by screwing a bolt having an external thread portion into an internal thread portion formed from the bottom of the push-up component to the front end of the piston component. However, when using an adhesive for bonding and fixing, for example, if the inner diameter of the bottomed cylindrical portion of the push-up component is larger than the outer diameter of the cylinder and there is a gap, it is sometimes difficult to locate the bottom of the bottomed cylindrical portion of the push-up component and the center of the front end of the piston component. In addition, when performing the fastening and fixing, the piston component sometimes rotates together in the cylinder, making it difficult to assemble.

[0009] Therefore, an object of the present invention is to provide a safety device that is easier to assemble than before, and an aircraft equipped with the safety device.

[0010] Problem Solution

[0011] (1) The safety device of the present invention is characterized in that it comprises: a sliding member; a cylinder, which accommodates the sliding member inside and is provided with a hole portion for the sliding member to protrude outward from the inside during operation; a push-up member, which has a bottomed cylindrical portion configured in a manner to cover at least a portion of the cylinder, and a flange portion formed in a manner to protrude outward from an opening portion or a midway portion of a side of the bottomed cylindrical portion, and is pushed in one direction by the sliding member; an ejection object, which is supported and pushed up by the flange portion of the push-up member; a power source, which causes the sliding member to move in the cylinder in a manner to protrude from the inside to the outside, an end portion of the sliding member protruding in the direction of the outward protrusion (hereinafter referred to as one end portion of the sliding member) having a non-circular cross-section, a first hole portion being formed at the bottom of the bottomed cylindrical portion, the first hole portion having an insertion opening portion for inserting one end portion of the sliding member from the cylinder side, and at least a portion of the first hole portion being formed with a fitting portion having a shape substantially the same as the non-circular shape that fits with one end portion of the sliding member.

[0012] (2) In the safety device of the above-mentioned (1), the bottom of the bottomed cylindrical portion is an integrally molded product that is nearly flat or cylindrical, and the fitting portion is provided in the portion of the first hole portion that includes the insertion opening portion or the middle portion that does not include the insertion opening portion. A second hole portion that is smaller in diameter than the first hole portion and connected to the first hole portion is formed on the bottom of the bottomed cylindrical portion of the push-up component on the side opposite to the cylinder. The sliding component and the push-up component are preferably fastened and fixed by tightening a bolt component with an external thread portion through the first hole portion and the second hole portion to an internal thread portion formed at one end of the sliding component protruding outward, or by tightening a nut component with an internal thread portion to an external thread portion formed at the front end of the sliding component that protrudes through the first hole portion and the second hole portion.

[0013] (3) As another perspective, in the safety device of the above-mentioned (1), the bottom of the bottomed cylindrical portion has a nearly flat-plate-shaped portion or a nearly cylindrical portion, and a cylindrical component fixed to the nearly flat-plate-shaped portion or the nearly cylindrical portion on the opposite side of the cylinder side, the first hole portion is formed from the insertion opening portion to the interior of the cylindrical component, and the fitting portion is arranged in at least a portion of the interior of the cylindrical component.

[0014] (4) In the safety device of (1) to (3) above, the non-circular shape is preferably a polygon, an ellipse, a star, or a gear shape.

[0015] (5) The aircraft of the present invention comprises the safety device described in any one of (1) to (4), wherein the projectile is a parachute or a paraglider.

[0016] Effects of the Invention

[0017] The present invention can provide a safety device that is easier to assemble than before before before operation, and an aircraft equipped with the safety device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] [ Figure 1 ] is a cross-sectional view showing a safety device according to an embodiment of the present invention.

[0019] [ Figure 2 (a) Yes Figure 1 A top view of the rod-shaped portion of the piston component in the safety device, (b)-(g) are modifications of (a).

[0020] [ Figure 3 (a) Yes Figure 1 A partial enlarged view of the safety device, (b) is Figure 1 Side view of the storage container in the safety device.

[0021] [ Figure 4 ]yes Figure 1 Illustration of the cover portion of a safety device, (a) is a plan view, (b) is a side view, and (c) is an oblique view.

[0022] [ Figure 5 ] is shown Figure 1 A graphic representation of the aircraft to which the safety device is applicable.

[0023] [ Figure 6 ] is shown Figure 1 FIG. 2 is a diagram showing a modified example of a safety device. DETAILED DESCRIPTION

[0024] See below Figure 1-Figure 5 A safety device according to an embodiment of the present invention will be described.

[0025] like Figure 1 As shown, the safety device 100 of this embodiment comprises: a piston member 10 as a sliding member; a cylinder 14, which accommodates the piston member 10 and is provided with a hole 13, which is used for the piston member 10 to move outward ( Figure 1 Pushing member 15, which is piston member 10 in one direction ( Figure 1The push-up member 15 pushes up the ejected object 16, which is supported and pushed up by the push-up member 15; a gas generator (micro gas generator) 17, which serves as a power source for the piston member 10 to move in the cylinder 14; a bottomed cylindrical receiver 18, which accommodates the piston member 10, the cylinder 14, the push-up member 15, the ejected object 16, and the gas generator 17; and a cover 21, which blocks the open end of the receiver 18.

[0026] In this embodiment, the projectile 16 is a parachute or a paraglider. In addition, the gas generator 17 is arranged below the main body 11 of the piston member 10 in a state of being pressed into the open end below the cylinder 14. In addition, the lower part of the cylinder 14 is fixed to the bottom of the storage container 18.

[0027] The piston member 10 includes a main body 11 having an outer diameter portion substantially the same as the inner diameter of the cylinder 14 , and a rod-shaped portion 12 connected to the main body 11 , extending upward and having a smaller diameter than the main body 11 .

[0028] An internal thread portion 12a is formed at the upper end of the rod-shaped portion 12 from the front end along the central axis to the middle. In addition, the cross section of at least the upper end side of the rod-shaped portion 12 is formed into a non-circular shape (here, Figure 2 (a) shows a square). Here, the non-circular shape is, for example, a polygon (e.g. Figure 2 (a)-(d)), elliptical (e.g. Figure 2 (e)), star-shaped (e.g. Figure 2 (f)), or gear-shaped (e.g. Figure 2 (g)) etc., but any shape is acceptable as long as it is non-circular. In addition, the internal thread portion 12a can be screwed together with the external thread portion 50b of the bolt member 50 described later.

[0029] A stopper 23 is provided at the upper part of the cylinder 14, and is arranged so as to surround a part of the rod-shaped portion 12 of the piston member 10. That is, the rod-shaped portion 12 is arranged so as to pass through the stopper 23. Thus, when the piston member 10 moves upward, the main body 11 contacts the stopper 23 and stops, thereby preventing the main body 11 from being released from the cylinder 14 to the outside.

[0030] like Figure 1 As shown, the push-up component 15 includes: a bottomed cylindrical portion 19, which is configured to cover a portion of the cylinder 14, that is, to cover the outer portion of the cylinder 14 except for the opening end on the side where the gas generator 17 is arranged; and a disc-shaped supporting portion 20, which is provided as a flange (a flange-shaped portion) at the opening portion of the bottomed cylindrical portion 19 to support the ejection object 16.

[0031] The bottomed cylindrical portion 19 has: a bottom portion 19a of a nearly flat plate shape or a nearly cylindrical shape (in this embodiment, a nearly cylindrical shape); a hole portion 51 formed on the cover portion 21 side of the bottom portion 19a; a hole portion 52 (a second hole portion) having a smaller diameter than the hole portion 51; and a hole portion 53 (a first hole portion) communicating with the hole portion 51 through the hole portion 52 and having a larger diameter than the hole portion 52. The diameter of the hole portion 51 is larger than the diameter of the cap portion 50a of the bolt member 50. The diameter of the hole portion 52 is smaller than the diameter of the cap portion 50a, and the external thread portion 50b of the bolt member 50 inserted from the hole portion 51 side can be guided to the hole portion 53 side. The hole portion 53 has substantially the same shape as one end portion (upper end portion) of the rod-shaped portion 12, and becomes a fitting portion that fits one end portion of the rod-shaped portion 12 by inserting one end portion of the rod-shaped portion 12 from an insertion opening portion 53a provided on the cylinder 14 side of the bottom portion 19a of the bottomed cylindrical portion 19.

[0032] The bolt component 50 connects the rod-like portion 12 and the push-up component 15 by inserting the external thread portion 50b from the hole portion 51 side into the hole portion 52 and screwing together with the internal thread portion 12a of the rod-like portion 12 that is engaged with the hole portion 53. At this time, one end of the rod-like portion 12 is non-circular and is engaged with the hole portion 53 of substantially the same shape, so when the bolt component 50 and the internal thread portion 12a are screwed together, the rod-like portion 12 does not rotate together. Specifically, because the front end portions of the push-up component 15 and the piston component 10 are non-circular and engaged, when fastened with the bolt component 50, the push-up component 15 can be fixed while being rotated, and the piston component 10 can be fastened in a manner that does not tighten in the direction of the gas generator 17 and rotate together.

[0033] In the initial state, the support part 20 is separated from the inner surface of the bottom surface of the storage container 18. In addition, the support part 20 has a vent hole 26 for reducing the influence of the negative pressure generated between the bottom of the ejection object 16 and the support part 20 during operation, so that the ejection object 16 is more easily ejected. In addition, the outer peripheral part of the support part 20 is formed in a manner not to contact the inner side of the storage container 18.

[0034] like Figure 3 (a) and Figure 4 As shown, the cover portion 21 has a cylindrical protrusion 21a extending from the edge portion toward the side of the container 18; a supporting component 21b, which is provided at a position opposite to the protrusion 21a and across the open end of the container 18 so as to protrude toward the side of the container 18; and a reinforcing component 21e, which reinforces the top surface of the cover portion 21.

[0035] The protrusion 21a has a through hole 21c extending toward the center of the cover 21. In addition, the pin member 22 is inserted into the through hole 21c and the through hole 18a described later, thereby forming an engagement mechanism for engaging the opening end of the receiver 18 with the protrusion 21a. Here, the protrusion 21a is cylindrical, but it does not need to be cylindrical as long as it is a protrusion (protrusion, etc.) provided in a manner opposite to the receiving member 21b and having the through hole 21c.

[0036] The receiving member 21b has a through hole 21d extending toward the center of the cover 21. The through hole 21d receives the front end of the pin member 22 (the front end of the pin member 22 is inserted) when the pin member 22 is inserted into the through hole 21c and the through hole 18a, so that the opening end of the storage container 18 and the cover 21 can be fixed more firmly.

[0037] The pin member 22 includes: a cap portion 22a having a larger diameter than the second through hole 21c; and a rod-shaped portion 22b having the cap portion 22a provided at one end thereof, which is inserted and engaged in the through holes 18a, 21c, and 21d. In addition, the pin member 22 is provided with a stopper, which prevents the pin member 22 from falling off after being inserted into the through holes 18a, 21c, and 21d before operation. As specific examples of the pin member 22, brush clip pins and trim clip pins can be cited, but are not limited thereto. Any type of pin member can be used as long as it has a stopper (including a member with high friction force on the surface of the rod-shaped portion 22b) that prevents the pin member 22 from falling off after being inserted into the through holes 18a, 21c, and 21d.

[0038] The reinforcement component 21e can be arranged on the inner side of the top surface portion of the cover portion 21, at a position that does not contact the upper end of the bottomed cylindrical portion 19 of the push-up component 15. Here, as a modified example, the reinforcement component 21e can be of any shape as long as it can reinforce without contacting the upper end of the bottomed cylindrical portion 19 of the push-up component 15. A plurality of reinforcement components can be arranged radially from the center of the cover portion to the outside, or a spiral shape can be provided, or it can be arranged on the outer side of the top surface portion of the cover portion 21.

[0039] The container 18 has a through hole 18a and a breakable portion 18b near the opening end. The breakable portion 18b is formed in the through hole 18a. Figure 3 The part that breaks when a force greater than a predetermined value is applied in the upper direction of the paper surface.

[0040] In addition, if Figure 1 , Figure 3As shown in (b), the bottom of the container 18 is provided with a plurality of vents 24 connecting the inside and outside of the container 18. In addition, the side wall portion of the container 18 is provided with a plurality of vents 25 connecting the inside and outside of the container 18. In addition, when the push-up component 15 moves quickly in the container 18, negative pressure is generated in the area between the push-up component 15 and the bottom surface of the container 18. This makes it difficult for the push-up component 15 to move. Therefore, by providing the above-mentioned vents 24, 25, the negative pressure phenomenon can be reduced, allowing the push-up component 15 to move smoothly.

[0041] In addition, the ejection 16 is stored in the storage container 18, for example, between the inner surface of the storage container 18 and the outer surface of the bottomed cylindrical portion 19 of the push-up member 15 in a manner surrounding the outer surface of the bottomed cylindrical portion 19. In addition, the ejection 16 is folded so that its outer side does not contact the inner side of the storage container 18. In addition, the ejection 16 is connected to one end of a thin rope (not shown in the figure), for example, and the other end of the thin rope is connected to the inside of the storage container 18 or the body 31 of the aircraft 30 described later.

[0042] The gas generator 17 may be an igniter alone or a gas generator having an igniter and a gas generator. In addition, a hybrid type or a pressure storage type gas generator may be used in which the sealing plate of a small gas cylinder is cracked by a gunpowder igniter to discharge the internal gas to the outside. In this case, the pressurized gas in the gas cylinder may be a non-flammable gas such as argon, helium, nitrogen, carbon dioxide, or a mixture of the above gases. In addition, in order to ensure that the piston is propelled when the pressurized gas is released, the gas generator may be provided with a heating element composed of a gas generating agent composition or a thermite composition.

[0043] The ejection portion for ejecting the ejected material 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] In the above configuration, when an aircraft, for example, equipped with the safety device 100 falls, the gas generator 17 operates, and the gas pressure generated by the operation pushes the piston member 10 to move upward in the cylinder 14. As a result, the push-up member 15 having the bottomed cylindrical portion 19 connected to the rod-shaped portion 12 of the piston member 10 is pushed upward (protruded) in the receiver 18. As a result, the upper portion of the push-up member 15 pushes up the cover portion 21, and the pin member 22 breaks the breakable portion 18b of the receiver 18, so that the cover portion 21 falls off, so that the open end of the receiver 18 is opened, and at the same time, the ejected object 16 is ejected from the inside of the receiver 18 to the outside ( Figure 1 When the ejection object 16 is a parachute or a paraglider, the ejection object 16 is ejected from the storage container 18 and then unfolded.

[0045] In addition, if Figure 5 As shown, the safety device 100 is connected and fixed to the body 31 of the aircraft 30 via the connecting member 40. Figure 5 As shown, the connecting member 40 connects the storage container 18 and the body 31 at a position that does not block the vent hole 24. Therefore, the aircraft 30 includes the body 31, the safety device 100 connected to the body 31, one or more propulsion devices (such as thrusters, etc.) 32 connected to the body 31 and propel the body 31, and a plurality of legs 33 provided at the lower part of the body 31. In fact, the electrode at the lower part of the gas generator 17 is fitted with a socket for power supply. For the convenience of explanation, Figure 1 and Figure 5 Omitted in .

[0046] As described above, according to this embodiment, a safety device 100 can be provided, which is not only easy to locate the bottom 19a of the bottomed cylindrical portion 19 of the push-up member 15 and the center of the front end of the rod-shaped portion 12 of the piston member 10, but also easier to assemble than the prior art because the piston member 10 does not rotate together in the cylinder 14. In addition, an aircraft 30 equipped with the safety device 100 can be obtained.

[0047] The embodiments of the present invention are described above based on the drawings, but the specific configuration is not limited to the above embodiments. The scope of the present invention is not shown by the above embodiments but by the scope of the claims, and further includes all changes that have equivalent meanings to the claims and are within the scope thereof.

[0048] For example, the present invention includes the following modified examples. The hole portion 51 may not be formed in the bottomed cylindrical portion 19 of the above-mentioned embodiment. In this case, the cap portion of the bolt member is in a state of protruding from the bottomed cylindrical portion of the push-up member, but the height position of the bottom of the bottomed cylindrical portion can be adjusted and designed so that the cap portion does not hinder the cover portion from being installed on the storage container (for example, in the initial state, the cap portion is not in the position of the push-up cover portion).

[0049] In addition, in the above-mentioned embodiment, the push-up component and the rod-shaped portion of the piston component are connected using a bolt component, but it is not limited to this. For example, an adhesive can be applied to the hole portion of the push-up component (equivalent to the hole portion 53 of the above-mentioned embodiment) or the rod-shaped portion of the piston component to bond and connect the push-up component and the rod-shaped portion of the piston component. In addition, for example, an external thread portion can be formed at the front end portion of the rod-shaped portion of the piston component, passing through the hole portion of the push-up component, and a nut component having an internal thread portion can be tightened to the external thread portion, thereby connecting the push-up component and the rod-shaped portion of the piston component.

[0050] In addition, in the above embodiment, the support portion 20 of the push-up member 15 extends from the edge of the opening of the push-up member 15, but is not limited thereto. It can be extended from the middle part of the bottomed cylindrical portion 19 of the push-up member 15 according to the design that meets the size of the ejected object 16, etc.

[0051] In addition, in the above-mentioned embodiments, a gas generator is used as a power source, but as long as the driving force for propelling the sliding member in the cylinder can be applied to the sliding member, its structure is not limited, for example, an elastic body such as a spring can be used.

[0052] In addition, in the above-mentioned embodiment, the container 18 is formed in a cylindrical shape, but it is not limited to this, and it may be other shapes, such as a square tube.

[0053] In addition, the piston member 10 in the above-mentioned embodiment may be a telescopic structure.

[0054] In addition, in each of the above-mentioned embodiments, when the ejection object is a parachute or a paraglider, the parachute or the paraglider can be packaged. In addition, the package can break or fall off during operation.

[0055] Furthermore, in each of the above-mentioned embodiments, a parachute or a paraglider is listed as an ejected object, but it is not limited thereto, and an object including a lift generating component may be ejected as an ejected object. Examples of the lift generating component include a parafoil, a logaro parachute, a single-surface parachute, an airplane wing, a propeller, a balloon, and the like. In addition, when the lift generating component has a control line, it is desirable that the safety device has a steering mechanism that can change the tilt angle of the ejected lift generating component by using the control line. The steering mechanism, for example, includes a plurality of reels that are respectively wound around a plurality of control lines connected to the lift generating component, and a motor that serves as a power source for these reels, and by driving the motor to wind or pull out the control line, the lift generating component can be appropriately stretched or loosened.

[0056] In addition, in the above-mentioned embodiment, the cylinder, the power source and the storage container are preferably fixed to the body by means of rubber bands, belts, strings, other means (mechanical joints, bolts, fasteners, adhesives), etc.

[0057] In the above embodiment, one end of the rod-shaped portion 12 is inserted from the insertion opening 53a to fit the one end of the rod-shaped portion 12 into the hole 53, but the present invention is not limited thereto. For example, the hole 53 may be a simple through hole (e.g., a circular cross section) up to the middle of the hole 53, and a non-circular shape may be formed to fit the one end of the rod-shaped portion 12 from the middle of the hole 53.

[0058] In addition, instead of the above embodiment, it may be Figure 6 The safety device of the modified example is shown. The safety device of this modified example is described in detail below. In addition, unless otherwise specified, the symbols with the same last two digits as those in the above embodiment represent the same parts as those in the above embodiment, so their description is omitted. In addition, in this modified example, unless otherwise specified, the same components as those in the above embodiment are used.

[0059] The safety device 200 of this modified example differs from the safety device 100 mainly in the following points: (1) the bottom 160 of the bottomed cylindrical portion 119 has a portion 162 that is nearly flat or nearly columnar (in this modified example, nearly flat) and a cylindrical member 161 fixed to the portion 162 on the side opposite to the cylinder 114 side; (2) the first hole portion 153 having the insertion opening 153a is formed by the hole portion 162a provided in the portion 162 and the interior 161a of the cylindrical member 161; (3) one end of the rod-shaped portion 112 passes through the portion 162 from the cylinder 114 side to the outside; (4) the shape of the interior 161a of the cylindrical member 161 is similar to that of the rod-shaped portion 112. The shape of one end of the rod-shaped portion 112 is basically the same, and one end of the rod-shaped portion 112 is inserted into the interior 161a of the tubular component 161 through the hole portion 162a from the insertion opening portion 153a on the side of the cylinder 114 set at the bottom 160, thereby fitting one end of the rod-shaped portion 112 into the interior 161a of the tubular component 161 (the interior 161a of the tubular component 161 becomes the fitting portion), (5) the external thread portion 150b of the bolt component 150 is inserted into the hole portion 152 through the hole portion 161b set in the tubular component 161, and is screwed into the internal thread portion 712a of the rod-shaped portion 712, thereby connecting the rod-shaped portion 712 and the push-up component 115.

[0060] The safety device 200 having the above-described structure can produce the same effects as the safety device 100 .

[0061] Explanation of symbols

[0062] 10, 110 piston parts

[0063] 11, 111 Main body

[0064] 12, 112, 212, 312, 412, 512, 612, 712 rod

[0065] 12a, 112a, 212a, 312a, 412a, 512a, 612a, 712a Internal thread

[0066] 13, 113 hole

[0067] 14, 114 cylinder

[0068] 15, 115 Push-up components

[0069] 16, 116 Ejection

[0070] 17, 117 Gas generator

[0071] 18, 118 Storage

[0072] 18a Through hole

[0073] 18b Breakable part

[0074] 19, 119 bottomed cylindrical part

[0075] 20, 120 Support

[0076] 21, 121 cover

[0077] 21a Protrusion

[0078] 21b Bearing parts

[0079] 21c Through hole

[0080] 21d Through hole

[0081] 21e, 121e reinforcement parts

[0082] 22, 122 Pin parts

[0083] 22a Cap

[0084] 22b Rod-shaped part

[0085] 23, 123 Brake

[0086] 24, 25, 26, 124, 125, 126 Ventilation holes

[0087] 30 Aircraft

[0088] 31 Body

[0089] 33 Legs

[0090] 40 Connecting parts

[0091] 50, 150 bolt parts

[0092] 50a, 150a cap

[0093] 50b, 150b External thread

[0094] 51, 52, 53, 151, 152, 153 hole

[0095] 53a, 153a Insertion opening

[0096] 100, 200 safety devices

Claims

1. A safety device, characterized in that it has: Sliding parts; a cylinder which accommodates the sliding member inside and is provided with a hole for the sliding member to protrude outward from the inside during operation; a push-up member having a bottomed cylindrical portion arranged so as to cover at least a portion of the cylinder, and a collar-shaped portion formed so as to protrude outward from an opening portion or a midway portion of a side surface of the bottomed cylindrical portion, and being pushed in one direction by the sliding member; an ejection object supported and pushed upward by the flange-shaped portion of the push-up member; a power source that moves the sliding member in the cylinder so as to protrude from the inside toward the outside, One end of the sliding member in the direction of protruding outward has a non-circular cross section, A first hole is formed at the bottom of the bottomed cylindrical portion, and the first hole has an insertion opening for inserting one end of the sliding member in the outward protruding direction from the cylinder side. A fitting portion having substantially the same shape as the non-circular shape that fits with one end portion of the sliding member in the outwardly protruding direction is formed in at least a portion of the first hole.

2. The safety device according to claim 1, characterized in that The bottom of the bottomed cylindrical portion is an integrally formed object that is nearly flat or cylindrical. The fitting portion is provided in a portion of the first hole portion including the insertion opening portion or in a middle portion excluding the insertion opening portion, A second hole portion having a smaller diameter than the first hole portion and communicating with the first hole portion is formed on the bottom of the bottomed cylindrical portion on the side opposite to the cylinder. The sliding member and the push-up member The sliding member is fastened and fixed by screwing a bolt member having an external thread portion through the first hole portion and the second hole portion to an internal thread portion formed at one end portion of the sliding member in a direction in which the sliding member protrudes outward, or The sliding member is fastened and fixed by tightening a nut member having an internal thread portion onto an external thread portion formed on a front end portion of the sliding member protruding through the first hole portion and the second hole portion.

3. The safety device according to claim 1, characterized in that The bottom of the bottomed cylindrical portion has a nearly flat plate-shaped portion or a nearly cylindrical portion, and a cylindrical member fixed to the nearly flat plate-shaped portion or the nearly cylindrical portion on the opposite side to the cylinder side, The first hole is formed from the insertion opening to the inside of the tubular member. The fitting portion is provided in at least a portion of the interior of the tubular member.

4. The safety device according to any one of claims 1 to 3, characterized in that The non-circular shape is polygonal, elliptical, star-shaped, or gear-shaped.

5. An aircraft, characterized in that A safety device according to any one of claims 1 to 4, The projectile is a parachute or a paraglider.

Images