Safety device, and flying vehicle provided with safety device
There is provided a safety apparatus including a push-up member in which an ejected object is hardly displaced even during transportation, and an aerial vehicle including the safety apparatus. A safety apparatus 100 includes a cylinder 14 that accommodates a piston member 10 and is provided with a bore 13 through which the piston member 10 protrudes to the outside (upward in FIG. 1 ) during operation, a push-up member 15 that is pushed up in one direction by the piston member 10 , an ejected object 16 that is pushed up while being supported by the push-up member 15 , a gas generator 17 as a power source that moves the piston member 10 in the cylinder 14 , a container 18 that has a bottomed cylindrical shape and accommodates the piston member 10 , the cylinder 14 , the push-up member 15 , the ejected object 16 , and the gas generator 17 , and a lid 21 that closes an opening end of the container 18 . A movement preventing member 27 that prevents the ejected object 16 from moving in a circumferential direction of a bottomed cylindrical portion 19 is provided on an upper surface of a support 20 of the push-up member 15.
1. A safety apparatus comprising:
a sliding member;
a cylinder that accommodates the sliding member in an inside and is provided with a bore through which the sliding member protrudes from the inside to an outside during operation;
a push-up member including a bottomed cylindrical portion disposed to cover at least a part of the cylinder and a flange protruding to the outside from an opening or a side surface of the bottomed cylindrical portion, the push-up member being pushed up in one direction by the sliding member;
an ejected object that is pushed up while being supported by the flange of the push-up member;
a power source that moves the sliding member in the cylinder to protrude from the inside to the outside; and
at least one movement preventing member that is fixed to the flange, said at least one movement preventing member protrudes upwardly towards the ejected object and is configured to prevent rotational movement of the ejected object with respect to the bottomed cylindrical portion.
2. The safety apparatus according to claim 1 , wherein the movement preventing member is a member having a plate shape and having a triangular shape with an opposite side fixed to at least a part of the bottomed cylindrical portion and an adjacent side fixed to at least a part of the flange,
a L-shaped member having a first rod and a second rod, the first rod being fixed to at least a part of the bottomed cylindrical portion and the second rod being fixed to at least a part of the flange, or
a protruding member fixed to the bottomed cylindrical portion and protruding radially from the bottomed cylindrical portion.
3. The safety apparatus according to claim 2 , wherein the triangular shape has an oblique side that is a linear shape, a stair shape, a fan shape, or a cycloidal curve shape.
4. The safety apparatus according to claim 1 , wherein a plurality of the movement preventing members is provided to be rotationally symmetric about the bottomed cylindrical portion.
5. The safety apparatus according to claim 1 , wherein the flange is provided with at least one through hole.
6. The safety apparatus according to claim 4 , wherein the flange is provided with at least one through hole in every space between the plurality of movement preventing members.
7. The safety apparatus according to claim 5 wherein a plurality of the through holes is provided, a coupling member has a first end coupled to the ejected object, and the coupling member has a second end coupled to the flange through one or more of the plurality of through holes.
8. An aerial vehicle comprising:
an airframe;
the safety apparatus according to claim 1 , coupled to the airframe; and
a propulsion mechanism that is coupled to the airframe and propels the airframe.