Flying body

Abstract

To provide a flying body comprising an air sac that is configured to tighten members arranged inside and outside balloon fabrics constituting the air sac to attach an object to the air sac, which can reduce the risk that the balloon fabrics may break.SOLUTION: An assembly 14 comprises a toric intermediate member 141, where a portion disposed around an opening part of an air sac of a ballon fabric 111 is passed from a rear side to a front side, of an opening part inside the intermediate member 141 and then is folded back. A front-side member 142 mounted with a toric front-side sealing member 143 is arranged on a rear-side surface so as to contact a front side of the intermediate member 141 covered with the folded-back balloon fabric 111. A rear-side member 144 mounted with a toric rear-side sealing member 145 is arranged on a front-side surface so as to contact a rear side of the intermediate member 141 covered with the folded-back balloon fabric 111. The front-side member 142 and the rear-side member 144 are tightened, with a bolt 1461 and a nut 1462, in a direction in which the members approach each other, so that the assembly 14 is attached to the air sac.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a flying object having an air envelope, such as a balloon. [Background technology]

[0002] 2. Description of the Related Art Flying objects such as balloons and airships are equipped with a bag called a gas bag, and fly by the buoyancy generated by storing heated air or a gas lighter than air, such as helium gas, in the gas bag.

[0003] In a flying object having an air bag as described above, there are cases where it is desired to attach some kind of member to the air bag. For example, if an opening / closing mechanism for opening and closing an exhaust port provided in the air bag can be attached to the air bag, the crew can exhaust a desired amount of gas from the air bag at a desired timing by operating or instructing the opening / closing mechanism to open or close, thereby slowing down the ascent speed of the flying object or causing it to descend.

[0004] The envelope that constitutes the air envelope is a thin, lightweight sheet-like member, and is easily damaged when a large external force is applied locally. As a means for reducing the risk of such damage, for example, Patent Document 1 proposes a configuration in which a flat inner member placed inside the envelope and a flat outer member placed outside the envelope are fastened with fastening members such as bolts and nuts while sandwiching the envelope, thereby attaching an assembly of the inner member and the outer member to the envelope.

[0005] The assembly described in Patent Document 1 is attached to the envelope in a state where the assembly is in surface contact with the envelope, so that the force applied to the envelope due to the weight of the assembly, etc. is dispersed and not concentrated locally on the envelope. As a result, according to the invention described in Patent Document 1, the risk of damage to the envelope is reduced compared to a case where an object of a similar weight is attached to the envelope and a force is applied locally to the envelope. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2022-079418 A Summary of the Invention [Problem to be solved by the invention]

[0007] In the assembly described in Patent Document 1, the envelope and the assembly are fixed by frictional forces generated on the inner and outer surfaces of the envelope due to the fastening of the inner and outer members. Therefore, the force pulling the envelope downward, generated by the load of the transported goods suspended below the air bag, exceeds these frictional forces, and the envelope may slip out of place and fall out from between the inner and outer members. For example, in a configuration in which the shaft of the bolt fastening the inner and outer members passes through the envelope, when the envelope sandwiched between the inner and outer members slips out of place, the envelope will tear at the part that is caught on the bolt shaft.

[0008] This invention has been made in consideration of the above circumstances, and has as its object to provide a means for reducing the risk of the envelope falling out between components arranged inside and outside the envelope that constitutes the air bag in a flying object equipped with an air bag, in a configuration in which an object is attached to the air bag by tightening components arranged inside and outside the envelope. [Means for solving the problem]

[0009] The present invention provides a flying object comprising: an intermediate member that has a ring-shaped shape in a planar view and a flat cross section when cut along a plane including a straight line in the planar view direction; a skin that extends from the outside to the inside when the intermediate member is viewed in a planar view, passes through an inner opening of the intermediate member, is folded back, and then extends from the inside to the outside when the intermediate member is viewed in a planar view; a front side member that is arranged on the front side of the intermediate member, a back side member that is arranged on the back side of the intermediate member, when the viewpoint side when the intermediate member is viewed in a planar view is defined as the front side and the side opposite to the viewpoint side is defined as the back side; and a tightening mechanism that tightens the front side member and the back side member in a direction toward each other. Effect of the Invention

[0010] According to the present invention, even if a force pulling the envelope downward is applied, the envelope is not easily displaced between the front and rear members because it is caught on the inner edge of the intermediate member. As a result, the envelope is less likely to fall out from between the two members compared to the configuration described in Patent Document 1, for example. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a diagram showing a flying object according to an embodiment. [Diagram 2] 4A and 4B are diagrams illustrating examples of shapes of multiple envelopes that constitute an air envelope according to an embodiment. [Diagram 3] FIG. 4 is a diagram showing the shape of an air bag according to an embodiment. [Figure 4] FIG. 4 is a diagram illustrating an intermediate member according to an embodiment. [Diagram 5] FIG. 4 is a diagram showing a front side member according to an embodiment. [Figure 6] FIG. 4 is a diagram showing a front side member according to an embodiment. [Figure 7] FIG. 4 is a diagram showing a back side member according to an embodiment. [Figure 8] FIG. 2 is a diagram illustrating a fastening member according to an embodiment. [Figure 9] 1A and 1B are diagrams illustrating a front-side screw hole sealing member and a back-side screw hole sealing member according to an embodiment. [Figure 10] 11A and 11B are diagrams illustrating states before and after a bolt is attached to a rear member according to an embodiment. [Figure 11] 13 is a diagram showing a state in which the folded portion of the air envelope according to the embodiment is folded from the inside to the outside of the intermediate member, so that the back and front sides of the intermediate member are covered by the folded portion. FIG. [Figure 12] 13A-13D show an assembly before and after attachment to a bladder according to one embodiment. [Figure 13] FIG. 13 is a diagram showing a state in which a front-side sealing member according to one modified example is disposed on the rear side surface of a front-side member. [Figure 14] FIG. 13 is a diagram showing a state in which a rear-side sealing member according to one modified example is disposed on the front side surface of a rear-side member. [Figure 15] FIG. 13 is a cross-sectional view of an assembly according to a modified example. [Figure 16] FIG. 13 is a cross-sectional view of an assembly according to a modified example. [Figure 17] FIG. 13 is a cross-sectional view of an assembly according to a modified example. [Figure 18] FIG. 13 is a cross-sectional view of an assembly according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] 1 is a diagram showing a flying object 1 according to one embodiment of the present invention. The flying object 1 includes an air bag 11, which is a bag that contains a gas lighter than air, such as helium gas (hereinafter referred to as "lightweight gas"), slings 12, which are multiple cords whose upper ends are attached to the air bag 11 and whose lower ends hang down from the air bag 11, and a container 13 attached to the lower ends of the slings 12. The container 13 is a container that contains objects (including people) to be transported into the sky by the flying object 1, and is also called a cabin when people are being transported.

[0013] The flying object 1 further includes an assembly 14. The assembly 14 is a group of a plurality of assembled members, and is a structure that is attached to the air envelope 11 in the assembled state.

[0014] In the following description, as an example, assembly 14 is a structure that is attached to cover an exhaust hole provided at the top of the air bag 11 and has an opening / closing mechanism that opens and closes the exhaust hole in response to operation by an occupant inside the container 13.

[0015] Fig. 2 is a diagram illustrating the shapes of the multiple envelopes that make up the air bag 11. In the example of Fig. 2, the air bag 11 is composed of eight envelopes 111 that are roughly boat-shaped sheet-like members. When distinguishing between the eight envelopes 111, they are referred to as envelope 111(1), envelope 111(2), and so on, as shown in Fig. 2.

[0016] For example, the edges of two adjacent sheet-like members are joined together by thermal welding or the like, such as the right edge of envelope 111(1) (area indicated by solid line) and the left edge of envelope 111(2) (area indicated by dashed line), the right edge of envelope 111(2) and the left edge of envelope 111(3), ..., the right edge of envelope 111(8) and the left edge of envelope 111(1), and the like, and formed into a spherical shape overall, to create air bag 11.

[0017] Each of the envelopes 111 is formed in a shape like a fish's tail so that the portion located at the top of the air envelope 11 can be folded back as described later.

[0018] Fig. 3 is a diagram showing an air bag 11 made by joining together the envelopes 111 of Fig. 2. As shown in Fig. 3, the air bag 11 has an opening at the top and a roughly annular folded-back portion 112 surrounding the opening. The folded-back portion 112 is a portion formed by joining together the tail-fin-shaped portions of the envelopes 111.

[0019] The assembly 14 includes an intermediate member 141 , a front member 142 , a front sealing member 143 , a rear member 144 , a rear sealing member 145 , a fastening member 146 , a front screw hole sealing member 147 , and a rear screw hole sealing member 148 .

[0020] Fig. 4 is a diagram showing the intermediate member 141. Fig. 4(A) is a plan view of the front side of the intermediate member 141. In the following description, the front side means the viewpoint side (positive Z-axis direction side) when the air bag 11 is viewed from the outside in a plan view, and the back side means the side opposite the viewpoint side (negative Z-axis direction side) when the air bag 11 is viewed from the outside in a plan view.

[0021] The plan view of the intermediate member 141 from the back side is the same as the plan view of the intermediate member 141 from the front side (FIG. 4(A)).

[0022] FIG. 4B is a cross-sectional view of the intermediate member 141 taken along the dashed line in FIG. 4A, viewed in the direction of arrow A (positive direction of the Y-axis).

[0023] 4, the intermediate member 141 has a circular ring shape in plan view, and has an opening O1 (an example of an inner opening) on ​​the inside. The intermediate member 141 is a member having a flat cross section cut along a plane including a straight line in the direction of plan view (Z-axis direction) (for example, a plane perpendicular to the Y-axis or a plane perpendicular to the X-axis). The intermediate member 141 is made of a material harder than the air bag 11, such as hard plastic or light metal.

[0024] The intermediate member 141 has multiple (eight in the example of Figure 4) holes H1 for passing the shafts of bolts 1461 (part of the fastening member 146) described later, which are bored in a direction penetrating from the front side to the back side of the intermediate member 141 (in the Z-axis direction).

[0025] When the intermediate member 141 is viewed in a plan view, the inner edge E1 and the outer edge E2 are chamfered so that the envelope 111 is not easily damaged when force is applied to the portion of the envelope 111 that abuts the inner edge E1 or the outer edge E2.

[0026] 5 and 6 are diagrams showing the front side member 142. Fig. 5(A) is a plan view of the front side of the front side member 142. Fig. 5(B) is a plan view of the back side of the front side member 142. Fig. 5(C) is a cross-sectional view of the front side member 142 cut along the dashed line in Fig. 5(A) as viewed in the direction of arrow B (positive direction of the Y-axis). Fig. 6 is a diagram of the front side member 142 when the lid 1422 of the front side member 142 is open, as viewed obliquely from the back side.

[0027] As shown in Figures 5 and 6, the front side member 142 is, overall, a disk-shaped member when viewed in a plane, and has a flat cross-section when cut along a plane that includes a straight line in the direction of the planar view (for example, a plane perpendicular to the Y-axis or a plane perpendicular to the X-axis).

[0028] The front side member 142 includes a main body 1421, a lid 1422 arranged to cover an opening O2 located in the center of the main body 1421 when viewed in a plane from the back side, a hinge 1423 that connects the lid 1422 to the main body 1421 so as to be able to open and close, and a sealing member 1424 that serves to airtightly seal the gap between the main body 1421 and the lid 1422 when the lid 1422 is pressed against the main body 1421 so as to cover the opening O2.

[0029] The hinge 1423 has a spring or the like, and presses the lid 1422 against the main body 1421, biasing it in a direction to close the opening O2. A hook 1425 to which the upper end of the operating cord 15 is connected is attached to the lid 1422. The lower end of the operating cord 15 reaches inside the container 13, and an occupant inside the container 13 can pull the operating cord 15 to open the lid 1422 and exhaust the gas inside the air bag 11 to the outside through the opening O2. When the occupant releases the operating cord 15, the lid 1422 closes the opening O2 and exhausting stops.

[0030] The outer edge E3 when the front side member 142 is viewed in plan is chamfered so that the envelope 111 is not easily damaged when force is applied to a portion of the envelope 111 that abuts on the outer edge E3.

[0031] The main body 1421 of the front member 142 is made of a material harder than the air bag 11, such as hard plastic or light metal.

[0032] The front side member 142 has a plurality of holes H2 (eight in the example of FIGS. 5 and 6) for passing the shafts of the bolts 1461 therethrough, the holes H2 being formed in a direction (Z-axis direction) penetrating the front and back sides of the front side member 142. The holes H2 of the front side member 142 are provided so as to communicate with the holes H1 of the intermediate member 141 in the assembly 14.

[0033] A front-side sealing member 143 is attached to the back surface of the front-side member 142 by, for example, double-sided tape. The front-side sealing member 143 is an annular member that is disposed in the assembly 14 between the front-side member 142 and an intermediate member 141 (described later) that is covered with the folded-back envelope 111, and is disposed so as to be in contact with the entire circumference of the annular intermediate member 141.

[0034] The front sealing member 143 is an elastic member that has a circular shape in plan view and a flat cross section cut along a plane including a straight line in the plan view direction (for example, a plane perpendicular to the Y axis or a plane perpendicular to the X axis). The front sealing member 143 has a plurality of holes H3 (eight in the examples of FIGS. 5 and 6) bored in a direction penetrating the front and back sides of the front sealing member 143 (Z-axis direction) for passing the shafts of the bolts 1461. The hole H3 of the front sealing member 143 is provided so as to communicate with the hole H1 of the intermediate member 141 and the hole H2 of the front member 142 in the assembly 14.

[0035] In the assembly 14, the front side sealing member 143 having the above-mentioned shape is disposed so as to contact the entire circumference of the annular intermediate member 141 on both the outer side (the side farther from the opening O1 in the XY plane) and the inner side (the side closer to the opening O1 in the XY plane) of the hole H1 opened in the intermediate member 141 when the intermediate member 141 is viewed in plan view. As a result, the movement path of the gas passing through the gap between the intermediate member 141 and the front side member 142 is sealed by the front side sealing member 143, and leakage of the gas from the air bag 11 to the outside through that movement path is prevented.

[0036] Fig. 7 is a diagram showing the rear side member 144. Fig. 7(A) is a plan view of the front side of the rear side member 144. Fig. 7(B) is a plan view of the rear side of the rear side member 144. Fig. 7(C) is a cross-section of the rear side member 144 taken along the dashed line in Fig. 7(A) as viewed in the direction of arrow C (positive direction of the Y-axis).

[0037] 7, the rear member 144 has an annular shape in plan view, and a cross section cut along a plane including a straight line in the plan view (for example, a plane perpendicular to the Y axis or a plane perpendicular to the X axis) has a flat plate shape. The rear member 144 is made of a material harder than the air bag 11, such as hard plastic or light metal.

[0038] The rear member 144 has a plurality of holes H4 (eight in the example of FIG. 7) for passing the shafts of the bolts 1461 therethrough, which are bored in a direction penetrating the front and rear sides of the rear member 144 (Z-axis direction). The holes H4 of the rear member 144 are provided so as to communicate with the holes H1 of the intermediate member 141, the holes H2 of the front member 142, and the holes H3 of the front sealing member 143 in the assembly 14. A thread root is cut on the inner surface of the hole H4 in a shape corresponding to the thread cut on the shaft of the bolt 1461, which will be described later.

[0039] The outer edge E4 when the rear side member 144 is viewed in plan is chamfered so that the envelope 111 is not easily damaged when force is applied to a portion of the envelope 111 that abuts against the outer edge E4.

[0040] A back-side sealing member 145 is attached to the front surface of the back-side member 144 by, for example, double-sided tape. The back-side sealing member 145 is an annular member that is disposed in the assembly 14 between the back-side member 144 and an intermediate member 141 (described later) that is covered with the folded-back envelope 111, and is disposed so as to be in contact with the entire circumference of the annular intermediate member 141.

[0041] The rear sealing member 145 is an elastic member having a circular ring shape in plan view and a flat cross section cut along a plane including a straight line in the plan view direction (for example, a plane perpendicular to the Y axis or a plane perpendicular to the X axis). The rear sealing member 145 has a plurality of holes H5 (eight in the example of FIG. 6) for passing the shafts of the bolts 1461 in a direction penetrating the front and rear sides of the rear sealing member 145 (Z-axis direction). The hole H5 of the rear sealing member 145 is provided so as to communicate with the hole H1 of the intermediate member 141, the hole H2 of the front member 142, the hole H3 of the front sealing member 143, and the hole H4 of the rear member 144 in the assembly 14.

[0042] The back sealing member 145 having the above-mentioned shape is disposed in the assembly 14 so as to contact the entire circumference of the annular intermediate member 141 on both the outer side (the side farther from the opening O1 in the XY plane) and the inner side (the side closer to the opening O1 in the XY plane) of the hole H1 opened in the intermediate member 141 when the intermediate member 141 is viewed in plan view. As a result, the movement path of the gas passing through the gap between the intermediate member 141 and the back sealing member 145 is sealed, and leakage of the gas from the air bag 11 to the outside through the movement path is prevented.

[0043] FIG. 8 is a diagram showing the fastening member 146. In this embodiment, the fastening member 146 is composed of eight pairs of bolts 1461 and nuts 1462. FIG. 8(A) is a diagram showing one pair of bolts 1461 and nuts 1462 as viewed from the side (for example, as viewed in the positive direction of the Y-axis). FIG. 8(B) is a plan view of the front side of the bolt 1461. FIG. 8(C) is a plan view of the front side of the nut 1462. FIG. 8(D) is a cross-section of the nut 1462 cut along the dashed line in FIG. 8(C) as viewed in the direction of arrow D (positive direction of the Y-axis).

[0044] The shaft of the bolt 1461 is threaded on its outer surface. The nut 1462 has a thread groove on its inner surface (the surface in contact with the hole) that corresponds to the thread of the bolt 1461.

[0045] 9 is a diagram showing the front side screw hole sealing member 147 and the rear side screw hole sealing member 148. The front side screw hole sealing member 147 and the rear side screw hole sealing member 148 are the same member, but are different in that in the assembly 14, the front side screw hole sealing member 147 is disposed on the front side of the front side member 142, and the rear side screw hole sealing member 148 is disposed on the rear side of the rear side member 144.

[0046] Fig. 9(A) is a plan view of the front side of front side screw hole sealing member 147 or back side screw hole sealing member 148. Fig. 9(B) is a cross section of front side screw hole sealing member 147 or back side screw hole sealing member 148 taken along the dashed line in Fig. 9(A) as viewed in the direction of arrow E (positive direction of the Y-axis).

[0047] The front screw hole sealing member 147 and the rear screw hole sealing member 148 are elastic members having a circular ring shape in plan view. They are elastic members having a circular ring shape in plan view, and a cross section cut along a plane including a straight line in the plan view direction (for example, a plane perpendicular to the Y axis or a plane perpendicular to the X axis) has a flat plate shape. The inner openings of the front screw hole sealing member 147 and the rear screw hole sealing member 148 serve as holes for passing the shaft of the bolt 1461. In addition, the front screw hole sealing member 147 and the rear screw hole sealing member 148 seal the movement path of the gas passing through a hole (described later) in the envelope 111 for passing the shaft of the bolt 1461, and serve to prevent the gas from leaking from the air bag 11 to the outside through the movement path.

[0048] A plan view of the back side of front side screw hole sealing member 147 or back side screw hole sealing member 148 is similar to the plan view of the front side (FIG. 9(A)).

[0049] The procedure for assembling the assembly 14 will be described below.

[0050] First, the worker inserts the shaft of the bolt 1461, which has passed through the hole of the rear screw hole sealing member 148, from the rear side to the front side into each of the eight holes H4 (which communicate with the hole H5 of the rear sealing member 145) of the rear member 144 to which the rear sealing member 145 is attached, and screws the bolt 1461 into the rear member 144 so that the thread root on the inner side of the hole H4 and the thread on the outer side of the shaft of the bolt 1461 are fitted together. Fig. 10(A) is a diagram showing the state before the bolt 1461 is screwed into the rear member 144, and Fig. 10(B) is a diagram showing the state after the bolt 1461 is screwed into the rear member 144.

[0051] Next, the worker places the back member 144, to which the back sealing member 145, the back screw hole sealing member 148, and the bolt 1461 are attached, into the inside of the air bag 11 through the opening at the top of the air bag 11.

[0052] Next, the worker passes the folded portion 112 (see FIG. 3) at the top of the air bag 11 from the back side to the front side of the opening O1 of the intermediate member 141, and then folds it back from the inside (the side closer to the opening O1 in the XY plane) to the outside (the side farther from the opening O1 in the XY plane) in a plan view. FIG. 11 is a diagram showing a state in which the folded portion 112 of the air bag 11 is folded back from the inside to the outside of the intermediate member 141, and the back side and the front side of the intermediate member 141 are covered by the folded portion 112.

[0053] That is, as shown in FIG. 11, the envelope 111 extends from the outside (the side farther from the opening O1 in the XY plane) to the inside (the side closer to the opening O1 in the XY plane) when the intermediate member 141 is viewed in a plane, passes through the inner opening O1 of the intermediate member 141, and is then folded back, and is positioned so as to extend from the inside to the outside when the intermediate member 141 is viewed in a plane.

[0054] Next, the worker uses a tool such as an punch to open a hole in the portion of the envelope 111 that closes the hole H1 of the intermediate member 141, through which the shaft of the bolt 1461 passes.

[0055] Next, the worker positions the back side member 144, to which the back side sealing member 145, back side screw hole sealing member 148, and bolts 1461 are attached, which were previously placed inside the air bag 11, so that the positions of the eight bolts 1461 match the positions of the eight holes H1 of the intermediate member 141, and then inserts the shafts of the bolts 1461 into the holes H1 from the back side toward the front side (in the positive direction of the Z axis).

[0056] Next, the worker positions the front side member 142 with the front side sealing member 143 attached so that the positions of the eight holes H2 (which communicate with holes H3 of the front side sealing member 143) of the front side member 142 match the positions of the shafts of the eight bolts 1461, and then inserts the shafts of those bolts 1461 into the holes H2 from the back side toward the front side (in the positive direction of the Z axis).

[0057] Next, the worker attaches the front side screw hole sealing member 147 to each of the shafts of the eight bolts 1461 so that the shafts pass through the holes in the front side screw hole sealing member 147 from the back side to the front side. Then, the worker attaches the nuts 1462 to each of the shafts of the eight bolts 1461 and screws the bolts 1461 into the nuts 1462. As a result, the front side member 142 and the back side member 144 are tightened by the bolts 1461 and the nuts 1462 in a direction in which they approach each other.

[0058] When the worker tightens the bolt 1461 into the nut 1462 with an appropriate torque, the attachment of the assembly 14 to the air envelope 11 is completed.

[0059] Figure 12 shows assembly 14 before and after attachment to air bag 11. That is, Figure 12(A) is a cross-sectional view showing assembly 14 in a state before it is attached to air bag 11, and Figure 12(B) is a cross-sectional view showing assembly 14 in a state after it has been attached to air bag 11.

[0060] In the assembly 14, the envelope 111 is sandwiched between the front member 142 and the rear member 144 in a folded state through the opening O1 of the intermediate member 141. Therefore, even if a downward pulling force due to the load of the container 13 or the like is applied to the envelope 111 via the suspending rope 12, the envelope 111 is unlikely to slip between the front member 142 and the rear member 144. Therefore, the portion of the envelope 111 that abuts against the shaft of the bolt 1461 is unlikely to be damaged, such as torn.

[0061] [Variations] The above-described embodiment may be modified in various ways within the scope of the technical concept of the present invention. Examples of such modifications are shown below. Two or more of the following modifications may be combined as appropriate.

[0062] (1) In the above-described embodiment, the front sealing member 143 is configured as a single member having a plurality of holes H3 formed therein. Alternatively, the front sealing member 143 may be configured as a plurality of annular sealing members arranged so as to contact the entire circumference of the annular intermediate member 141.

[0063] Fig. 13 is a diagram showing a state in which a front-side sealing member 143 according to one example of this modification is arranged on the back side of a front-side member 142 (a plan view of the front-side member 142 from the back side). The front-side sealing member 143 in Fig. 13 is composed of an annular sealing member 1431 arranged on the outside of a plurality of holes H2 provided in the front-side member 142, and an annular sealing member 1432 arranged on the inside of the plurality of holes H2, when the front-side member 142 is viewed in plan.

[0064] 13, the sealing member 1431 arranged on the back side of the front side member 142 is arranged in the assembly 14 so as to contact the entire circumference of the annular intermediate member 141 on the outer side of the hole H1 opened in the intermediate member 141 when the intermediate member 141 is viewed in plan. Also, the sealing member 1432 arranged on the back side of the front side member 142 is arranged in the assembly 14 so as to contact the entire circumference of the annular intermediate member 141 on the inner side of the hole H1 opened in the intermediate member 141 when the intermediate member 141 is viewed in plan.

[0065] At least one of sealing member 1431 and sealing member 1432 may be composed of two or more concentric sealing members. In that case, even if one of the two or more concentric sealing members is damaged or cannot fully perform its sealing function, the other sealing members will perform the sealing function, thereby preventing leakage of gas from air bag 11.

[0066] (2) In the above-described embodiment, the rear sealing member 145 is configured as a single member having a plurality of holes H5 formed therein. Alternatively, the rear sealing member 145 may be configured as a plurality of annular sealing members each arranged to contact the entire circumference of the annular intermediate member 141.

[0067] Fig. 14 is a diagram (a plan view of the rear member 144 from the front side) showing a state in which a rear sealing member 145 according to one example of this modification is disposed on the front side surface of the rear member 144. The rear sealing member 145 in Fig. 14 is composed of an annular sealing member 1451 disposed outside a plurality of holes H4 provided in the rear member 144 when the rear member 144 is viewed in plan, and an annular sealing member 1452 disposed inside the plurality of holes H4.

[0068] 14, the sealing member 1451 arranged on the front side of the back side member 144 is arranged in the assembly 14 so as to contact the entire circumference of the annular intermediate member 141 on the outer side of the hole H1 opened in the intermediate member 141 when the intermediate member 141 is viewed in plan. Also, the sealing member 1452 arranged on the front side of the back side member 144 is arranged in the assembly 14 so as to contact the entire circumference of the annular intermediate member 141 on the inner side of the hole H1 opened in the intermediate member 141 when the intermediate member 141 is viewed in plan.

[0069] At least one of sealing member 1451 and sealing member 1452 may be composed of two or more concentric sealing members. In that case, even if one of the two or more concentric sealing members is damaged or cannot fully perform its sealing function, the other sealing members will perform the sealing function, thereby preventing leakage of gas from air bag 11.

[0070] (3) In the above embodiment, the shape of the intermediate member 141 in a plan view is annular, but the shape of the intermediate member 141 in a plan view does not have to be annular as long as it is annular. For example, the shape of the intermediate member 141 in a plan view may be an elliptical ring or a polygonal ring with rounded corners. In that case, the shapes of the front side member 142, the front side sealing member 143, the rear side member 144, and the rear side sealing member 145 in a plan view may also correspond to the shape of the intermediate member 141.

[0071] (4) In the above-described embodiment, the inner edge E1 and the outer edge E2 of the intermediate member 141, the outer edge E3 of the front member 142, and the outer edge E4 of the back member 144 are chamfered to reduce the risk of those edges hitting the envelope 111 and damaging the envelope 111. In addition to or instead of chamfering those edges, the assembly 14 may include a cushioning member arranged to cover at least one of those edges.

[0072] For example, the entire surface of any or all of the intermediate member 141, the front member 142, and the back member 144 may be covered with an elastic body such as silicone rubber. In this case, the elastic body serves as a buffer member.

[0073] (5) In the above-described embodiment, the upper end of the envelope 111 is passed through the opening O1 on the inside of the intermediate member 141 from the back side to the front side, and then folded back. Alternatively, the upper end of the envelope 111 may be passed through the opening O1 on the inside of the intermediate member 141 from the front side to the back side, and then folded back. Fig. 15 is a cross-sectional view of the assembly 14 according to this modification.

[0074] (6) In the above-described embodiment, the assembly 14 is attached to the top of the air bag 11. The assembly 14 may be attached to the air bag 11 at a position other than the top.

[0075] (7) In the above embodiment, the assembly 14 is a structure that plays a role in opening and closing the exhaust hole of the air bag 11, but the role of the assembly 14 is not limited to this. For example, the assembly 14 may be a structure that functions as a mount for attaching devices such as various sensors to the outside or inside of the air bag 11.

[0076] (8) In the above-described embodiment, the front member 142 has no openings other than the hole H2 when the lid 1422 is closed, and the back member 144 has an opening on the inside other than the hole H4. As long as the airtightness required for the air bag 11 is maintained, a configuration in which the front member 142 has an opening (that is always open) other than the hole H2, a configuration in which the front member 142 has no openings other than the hole H2, a configuration in which the back member 144 has no openings other than the hole H4, etc. may be adopted.

[0077] (9) In the above embodiment, the flying object 1 is a gas balloon, but as long as the flying object has an air bag, the type of the flying object 1 is not limited to a gas balloon. For example, the flying object 1 may be a balloon other than a gas balloon, such as a hot air balloon, or an airship.

[0078] (10) In the above-described embodiment, the members fastened by the fastening member 146 include the intermediate member 141, the envelope 111 which is passed through the inside of the intermediate member 141 and then folded back to cover the front and back sides of the intermediate member 141, and the front member 142 and back member 144 which are arranged to sandwich the intermediate member 141 and the envelope 111, as well as the front sealing member 143, back sealing member 145, front screw hole sealing member 147, and back screw hole sealing member 148 which are members for preventing gas from leaking from the inside to the outside of the air bag 11.

[0079] In cases where the airtightness of the air bag 11 is sufficiently ensured without these sealing members (including, for example, cases where the flying object 1 is a hot air balloon or the like and high airtightness is not required for the air bag 11), some or all of these sealing members may be omitted.

[0080] In addition to the intermediate member 141, the envelope 111 which is passed through the inside of the intermediate member 141 and then folded back to cover the front and back sides of the intermediate member 141, and the front member 142 and back member 144 which are arranged to sandwich the intermediate member 141 and the envelope 111, a member other than the sealing member may be attached to the air bag by tightening the tightening member 146.

[0081] 16 is a diagram showing, as an example of such a member, an assembly 14 configured in such a manner that a rigid ring 149 is attached to the air bag 11 by a fastening member 146. The rigid ring 149 is disposed on the front surface of the front member 142 with a spacer 140 interposed therebetween, and is fastened together with the front member 142 and the like by the fastening member 146 (bolt 1461 and nut 1462).

[0082] For example, the upper end of the load tape 16 is connected to the rigid ring 149. The lower end of the load tape 16 is connected to the upper end of the sling 12. As a result, the load of the suspended load is not directly applied to the air bag 11, and the air bag 11 is less likely to be damaged by the load.

[0083] 16, a disk-shaped module 17 is attached to the front member 142 so as to airtightly close the opening of the front member 142 from the front side. The module 17 is, for example, a replaceable module that can be easily attached and detached to the front member 142 and selected from a plurality of types of modules having different functions. In this case, the assembly 14 serves as a mount for attaching the module 17 to the air envelope 11.

[0084] (11) In the above-described embodiment, a hole is formed in the envelope 111 for passing the shaft of the bolt 1461 therethrough. However, a configuration may be adopted in which a hole is not formed in the envelope 111 for passing a part of the fastening member 146 therethrough.

[0085] Fig. 17 is a cross-sectional view showing such an assembly 14. In the assembly 14 shown in Fig. 17, the shaft of the bolt 1461 is configured to pass through the opening O1 on the inside of the intermediate member 141. Therefore, it is not necessary to open a hole in the envelope 111 arranged to cover the intermediate member 141 for passing the shaft of the bolt 1461 through.

[0086] (12) In the above-described embodiment, the fastening member 146 composed of the bolt 1461 and the nut 1462 is used as a mechanism (fastening mechanism) for fastening the front side member 142 and the rear side member 144 in a direction toward each other. A configuration other than the combination of the bolt 1461 and the nut 1462 may be used as the fastening mechanism. For example, the front side member 142 and the rear side member 144 may be fastened by caulking, a fastening band, or the like instead of by screwing.

[0087] Fig. 18 is a diagram illustrating an assembly 14 including a fastening mechanism having a configuration different from the combination of a bolt 1461 and a nut 1462. The assembly 14 shown in Fig. 18 includes an inner cylindrical member 1463 provided so as to protrude from the front member 142 to the rear side (negative direction of the Z axis), and an outer cylindrical member 1464 provided so as to protrude from the rear member 144 to the front side (positive direction of the Z axis). A thread is cut on the outer surface of the inner cylindrical member 1463, and a thread root is cut on the inner surface of the outer cylindrical member 1464.

[0088] In this modification, an inner cylindrical member 1463 and an outer cylindrical member 1464 constitute a fastening mechanism instead of the bolt 1461 and the nut 1462. The inner cylindrical member 1463 may be molded integrally with the front member 142, or may be attached to the front member 142 by welding, adhesion, or the like. Similarly, the outer cylindrical member 1464 may be molded integrally with the back member 144, or may be attached to the back member 144 by welding, adhesion, or the like.

[0089] An operator can attach the assembly 14 to the air bag by screwing the inner cylindrical member 1463 into the outer cylindrical member 1464, tightening the front member 142 and the back member 144 in a direction toward each other.

[0090] (13) In the above-described embodiment, the front side member 142 and the front side sealing member 143 are arranged on the front side of the intermediate member 141 covered with the folded-back envelope 111 with the front side sealing member 143 attached to the back surface of the front side member 142. However, the front side sealing member 143 does not have to be attached to the front side member 142. In that case, the worker may first place the front side sealing member 143 on the front side of the intermediate member 141 covered with the folded-back envelope 111, and then place the front side member 142 on the front side of the front side sealing member 143.

[0091] In the above embodiment, the back side member 144 and the back side sealing member 145 are arranged on the back side of the intermediate member 141 covered with the folded-back envelope 111 with the back side sealing member 145 attached to the front surface of the back side member 144, but the back side sealing member 145 does not have to be attached to the back side member 144. In that case, the worker only needs to arrange the back side member 145 on the back side of the intermediate member 141 covered with the folded-back envelope 111, and then arrange the back side member 144 on the back side of the back side sealing member 145.

[0092] (14) In the above-described embodiment, the portion of each of the envelopes 111 located at the top of the air bag 11 is formed in a shape like a fish's tail fin, but the shape of the envelopes 111 and the air bag 11 created by joining the envelopes 111 together may be modified in various ways as long as the folded portion 112 is formed in a shape that allows the folded portion 112 to be folded from the inside to the outside after passing through the opening of the intermediate member 141. For example, when the assembly 14 is attached to the top of the air bag 11, the shape of the portion of the envelope 111 located at the top may be rectangular, etc. [Explanation of symbols]

[0093] 1...projectile, 11...air envelope, 12...hanging rope, 13...container, 14...assembly, 15...operating rope, 16...load tape, 17...module, 111...envelope, 140...spacer, 141...intermediate member, 142...front member, 143...front sealing member, 144...rear member, 145...rear sealing member, 146...fastening member, 147...front screw hole sealing member, 148...rear screw hole sealing member, 149...rigidity ring, 1421...main body, 1422...lid, 1423...hinge, 1424...sealing member, 1425...hook, 1431...sealing member, 1432...sealing member, 1451...sealing member, 1452...sealing member, 1461...bolt, 1462...nut, 1463...inner cylindrical member, 1464...outer cylindrical member.

Claims

1. An intermediate member having a ring-shaped shape in a plan view and a flat cross section cut along a plane including a straight line in the plan view direction; A skin extending from the outside to the inside when the intermediate member is viewed in a plan view, passing through an inner opening of the intermediate member, and then folding back, the skin being arranged to extend from the inside to the outside when the intermediate member is viewed in a plan view; When the intermediate member is viewed in a plan view, the side from which the intermediate member is viewed is defined as the front side, and the side opposite to the side from which the intermediate member is viewed is defined as the back side. a front side member disposed on a front side of the intermediate member; a back side member disposed on a back side of the intermediate member; a clamping mechanism that clamps the front member and the back member in a direction toward each other; A flying object equipped with the above.

2. a ring-shaped front sealing member disposed between the front member and the intermediate member covered with the folded envelope, the front sealing member being disposed in contact with the entire circumference of the ring-shaped intermediate member; a ring-shaped back sealing member disposed between the back member and the intermediate member covered with the folded envelope, the ring-shaped intermediate member being in contact with the entire periphery of the back sealing member; The flying object according to claim 1 .

3. the fastening mechanism has a member disposed to pass through a hole formed in the intermediate member, The front sealing member and the back sealing member are each disposed so as to be in contact with the entire circumference of the annular intermediate member on both the outer side and the inner side of a hole formed in the intermediate member when the intermediate member is viewed in plan. The flying object according to claim 2.

4. The front sealing member has a plurality of annular sealing members arranged so as to contact the entire circumference of the annular intermediate member. The flying object according to claim 3.

5. The rear sealing member has a plurality of annular sealing members each arranged to contact the entire periphery of the annular intermediate member. The flying object according to claim 3.

6. The intermediate member has a circular ring shape in a plan view. The flying object according to claim 1.

7. At least one of an inner edge of the intermediate member, an outer edge of the intermediate member, an outer edge of the front member, and an outer edge of the back member is chamfered. The flying object according to claim 1.

8. a cushioning member disposed so as to cover at least one of an inner edge of the intermediate member, an outer edge of the intermediate member, an outer edge of the front member, and an outer edge of the back member; The flying object according to claim 1.

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