JPH0261033B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a balloon-like structure,
In particular, it relates to a balloon-like structure that is filled with pressurized fluid, maintains a certain shape, and can change its external shape by applying an external force to it.

(Prior Art) Generally, when manufacturing a structure, a rigid body is used as the material. However, if a rigid body such as metal or resin is used as the material, if the structure is large, scaffolding or supports will be required for its manufacture and installation, which will incur additional costs. increases.

Furthermore, since the structure is heavy, it is extremely troublesome to transport it.

Furthermore, if said structures are installed especially for decorative, advertising, etc. purposes, their installation period is relatively short - i.e. their installation, dismantling and transport operations can be carried out within a relatively short period of time. Since it has to be repeated, the cost required for the decoration, advertising, etc. becomes enormous.

Furthermore, when configuring such a structure so that it can be moved in part or in its entirety, it requires a large-capacity drive source and a large-scale drive mechanism, which makes the structure extremely difficult to move. It is expensive, and its adjustment and maintenance are also difficult.

Furthermore, in order to move a large and heavy structure, it is dangerous to approach the structure during operation.

In view of the above, the inventor of the present invention fabricated the outline (external shape) of the structure by sewing the structure using materials such as cloth and film, and fabricated the structure using pressurizing means such as a blower. By increasing the pressure inside the main body higher than atmospheric pressure, the main body is inflated into a balloon shape to shape the external shape of the structure, and further, by arranging a simple driving means inside the structure, He has already devised and invented a balloon-like structure that can move part or all of the structure.

The above-mentioned invention is disclosed in Japanese Utility Model Application No. 124490/1982 and Japanese Unexamined Utility Model Publication No. 117788/1982, and the invention is also disclosed in Japanese Patent Application No. 70200/1988 (Japanese Patent Application Laid-Open No. 61-1989).
229076) and Japanese Patent Application No. 60-92371 (Utility Model Application No. 61-251895).

Generally, when an external force is applied to the outer wall or inner wall of a balloon-like structure to deform the balloon-like structure, for example, from an extended state to a bent state, or from a bent state to an extended state, As the cross-sectional area of the deformed portion increases, the external force required for the deformation gradually increases, making it virtually impossible to bend the structure, or even if bending is possible. It may become impossible to increase the angle of bending.

Furthermore, after the deformation, the reduction in volume of the balloon-like structure is visually obvious;
The appearance and impression of the balloon-like structure also deteriorate significantly.

In order to eliminate these various drawbacks, each of the above-mentioned publications and specifications discloses a technique for sewing extra fabric (extra portion) to a balloon-like structure.

In particular, in the specification of Japanese Patent Application No. 1983-70200,
Japanese Patent Application No. 60-92371 describes the details of the loose fabric when applying force in one direction to bend a balloon-like structure that is always in an extended state. Details of the slack cloth are shown when a balloon-like structure is stretched by applying a force in one direction.

(Problems to be Solved by the Invention) The above-described conventional techniques had the following problems.

That is, the balloon-like structure can be used as a human, animal, or
Alternatively, if the balloon-like structure is molded into the contour shape of a fictional creature, etc., and part or all of the balloon-like structure is deformed, the balloon-like structure is simply moved in one direction in order to make the movements of the creature appear more natural. In some cases, it may be necessary to not only extend the material in the same direction, but also bend it in the opposite direction.

Furthermore, there are cases where it is desired not only to simply extend the balloon-like structure which is always in a bent state, but also to bend it in the opposite direction to the bending direction.

However, in each of the above-mentioned publications and specifications,
No technology has been disclosed that can meet these demands, and its development has been desired.

The present invention has been made to solve the above-mentioned problems.

(Means and effects for solving the problems) In order to solve the above-mentioned problems, the present invention provides the balloon-like structure body with at least one margin having two margins that are substantially opposed to each other. By this means, the balloon-like structure can be bent from the stretched state in a predetermined direction or in the opposite direction, or it can be stretched from the bent state, and then the balloon-like structure can be bent from the stretched state to the bent direction. It is characterized by the effect that it can be bent in the opposite direction to the bending direction in the current state.

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic side view of a first embodiment of the present invention;
Fig. 2 is a schematic plan view of Fig. 1, Fig. 3 is a schematic sectional view taken along line C-C in Fig. 2, Fig. 4 is an enlarged view of section K in Fig. 3, and Fig. 5 A , B are developed views of the balloon-like structure shown in FIGS. 1 to 4, FIG. 5A is a developed view of the main body 12, and FIG.

In addition, in FIGS. 1 to 3, air holes 2 formed in the base 2 by means not shown are shown.
From A, air is sent into the balloon-like structure 11 in the direction of arrow A, and the balloon-like structure 11 stands upright and has an outline (cylindrical in this case).

Furthermore, the seam 11A of the balloon-like structure 11 shown in FIG. 1 is omitted in FIGS. 2 and 3. Furthermore, in FIG. 5A, the stitching allowance necessary for sewing the main body 12 into a cylindrical shape is omitted. Further, in FIG. 3, some of the operating strings 4A and 4B are omitted.

Now, in each figure, the balloon-like structure 11
The main body 12 and extra cloths 14A and 14 are made of cloth coated with resin or the like.
It is composed of B.

As is clear from FIG. 5A, when the main body 12 is sewn into a cylindrical shape, a cut is made on approximately the same circumference of the main body 12, i.e., on a plane perpendicular to the central axis of the cylinder. on the circumference obtained when
Two openings 13A and 13B are formed.

The openings 13A, 13B are the first, third, and fourth openings.
In the drawings and FIG. 5A, the width is shown as being formed with a certain width, but the width is not particularly limited to this, and it may simply be a cut.

The balloon-like structure 11 has a main body 12 sewn into a cylindrical shape, and openings 13A and 13B of the main body 12 are provided with fifth
It is formed by sewing the extra fabrics 14A and 14B shown in Figure B. Said extra cloth 14A, 14
B is provided with an allowance 15 having a boat bottom shape and a seam 16, and the seam 16 is attached to the main body 1.
2 openings 13A and 13B.

In addition, in each figure, the extra cloth 14A, 1
4B is fixed to the inside of the main body 12, but may be fixed to the outside of the main body 12.

The end of the balloon-like structure 11 is fixed to a base 2 in which an air hole 2A is formed. Also, inside the main body 12, the extra cloths 14A and 14B
Attachments 3A and 3B are fixed to the distal end side of the part where the attachments 3A and 3B are sewn, respectively.
One ends of operation strings 4A and 4B are fixed to A and 3B.

Although the air is constantly blown, the pressure inside the balloon-like structure 11 is kept constant because the air leaks from the seam 11A of the balloon-like structure 11.

Now, as mentioned above, the openings 13A and 13B
is shorter than half the length of the cylindrical outer circumference of the main body 12. In other words, as shown in FIG. 2, both ends E1 of the opening 13A (both ends of the margin 15),
Since both ends E2 of the opening 13B are arranged closer to each opening than the center line L of the cross section of the balloon-like structure 11, the balloon-like structure 11 is erected by the air blowing. .

Here, for example, when the operating string 4B fixed to the fixture 3B inside the balloon-like structure 11 is pulled in the direction of arrow B, the extra cloth 14A is extended as shown in FIG. 11 is bent in the direction of arrow D using both ends E1 of the opening 13A as fulcrums.

In this case, both ends E of the balloon-like structure 11
1, the volume on the side of the extra fabric 14B decreases, but conversely, the volume on the side of the extra fabric 14A from both ends E1 increases by the amount that the extra fabric 14A has expanded.

As a result, the degree of decrease in volume of the balloon-like structure 11 from the state before bending to after bending becomes small, and the increase in pressure inside the balloon-like structure 11 during bending is also suppressed to a relatively small value.

Therefore, the balloon-like structure 11 can be bent at both ends E1 by only applying a small force to the operating string 4B. Moreover, the angle of the bending can also be made relatively large. Furthermore, since there is little change in the volume of the balloon-like structure 11, the appearance of the balloon-like structure and the impression given to the audience are also good.

From this state, if you stop pulling the operating string 4B,
Due to the internal pressure, the balloon-like structure 11 returns to its expanded state as shown in FIG. 1 again.

Next, when the operating string 4A fixed to the fixture 3A inside the balloon-like structure 11 is pulled in the direction of arrow B,
As shown in FIG. 7, the extra cloth 14B is expanded, and the balloon-like structure 11 is bent in the direction of arrow F using both ends E2 of the opening 13B as fulcrums.

In this case, as in the case where the balloon-like structure 11 is bent by pulling the operating string 4B, the degree of decrease in the volume of the balloon-like structure 11 from the state before bending to after bending becomes small, The pressure increase inside the balloon-like structure 11 during bending can also be suppressed to a relatively small value.

Therefore, the balloon-like structure 11 can be bent at both ends E2 by only applying a small force to the operating string 4A. Moreover, the angle of the bending can also be made relatively large. Furthermore, since there is little change in the volume of the balloon-like structure 11, the appearance of the balloon-like structure and the impression given to the audience are also good.

As described above, in the first embodiment of the present invention, the main body 12 has a length that is less than 1/2 of the outer circumference of the main body 12.
and two openings 1 so as to be substantially opposite to each other.
3A, 13B, and the openings 13A, 13B are formed.
While sewing the extra fabrics 14A and 14B, respectively,
The inner wall of the main body 12 and the extra cloth 14A, 1
The operating strings 4A, 4 are located closer to the tip of the main body 12 than 4B.
One end of B was fixed.

For this reason, when the inside of the balloon-like structure 11 is pressurized, the balloon-like structure 11 expands, and by pulling either one of the operating strings 4A and 4B, the balloon-like structure 11 is It can be bent from its extended state in a predetermined direction or in the opposite direction.

FIG. 8 is a schematic side view of a second embodiment of the present invention;
9 is a schematic side view showing a state in which the balloon-like structure 21 is stretched by pulling the operating string 4C in FIG. 8, FIG. 10 is a schematic plan view of FIG. 9, and FIG. Balloon-like structure 2 shown in FIG.
1 is a developed view of the main body 22 of FIG. In each figure, the same reference numerals as in FIG. 1 represent the same or equivalent parts.

In each figure, the main body 2 of the balloon-like structure 21
2 has two openings 13 on almost the same circumference.
C, 13D is formed. Figures 9 to 1
As is clear from Figure 1, among the openings, the opening 13C is formed with a length exceeding 1/2 of the circumference, and the opening 13D is formed with a length less than 1/2 of the circumference. has been done.

Two loose cloths 14C, 14D are sewn into the openings 13C, 13D. Said extra cloth 1
4C and 14D are slack cloths having a boat bottom-shaped slack portion as shown in FIG. 5B.

In this second embodiment, only one operating string for deforming the balloon-like structure is arranged. That is, the fitting 3C to which one end of the operating string 4C is fixed is attached to the tip side of the main body 22 rather than the opening 13C formed with a length exceeding 1/2 of the circumference of the balloon-like structure 21. It is being

In the second embodiment of the present invention having the above configuration, when the inside of the balloon-like structure 21 is pressurized, the balloon-like structure 21 changes its outline shape in a bent state as shown in FIG. Shape.

When the operating string 4C is pulled in the direction of arrow B from this state, the balloon-like structure 24 first moves through the opening 13C.
It begins to rotate in the direction of arrow F, using both ends E3 as fulcrums. Then, as shown in FIG. 9, the balloon-like structure 21 expands.

When the operating string 4C is further pulled, the balloon-like structure 21 is moved further in the direction of arrow F, using both ends E4 of the opening 13D as fulcrums, as shown in FIG. It bends in the opposite direction to the bending direction of the balloon-like structure 21.

As described above, in the second embodiment of the present invention, the opening 13C has a length exceeding 1/2 of the outer circumference of the main body 22;
Openings 13D having a length less than 1/2 are formed on the outer periphery of the main body 22 so as to be substantially opposite to each other, and extra cloth 14 is formed in each of the openings 13C and 13D.
C and 14D were sewn, and one end of the operating string 4C was fixed to the inner wall of the main body 22, closer to the tip of the main body 22 than the extra fabric 14C.

For this reason, the balloon-like structure 21 is bent when the inside of the balloon-like structure 21 is pressurized, and by pulling the operation string 4C, the balloon-like structure 21 can be extended from the bent state. By further pulling the operating string 4C, the balloon-like structure 21 can be bent in the opposite direction to the bent state.

FIG. 13 is a schematic side view of a third embodiment of the present invention, FIG. 14 is a side view showing a state in which the balloon-like structure 31 is bent by pulling the operating string 4B shown in FIG. FIG. 15 is a side view showing a state in which the balloon-like structure 31 is bent by pulling the operating string 4A shown in FIG. 13. In each figure, the same reference numerals as in FIG. 1 represent the same or equivalent parts.

As is clear from the comparison with FIG. 1, the third embodiment of the present invention has a main body 32 of a balloon-like structure 31.
, with a length less than 1/2 of the outer circumference of the main body 32,
and a plurality of pairs of openings 13 facing each other.
A, 13B are formed, and each opening 1
Extra fabrics 14A and 14B are sewn to 3A and 13B. In addition, the fitting 3A to which one end of the operating string 4A is fixed, and the fitting 3B to which one end of the operating string 4B is fixed, are connected to the loose cloths 14A and 14B, respectively, which are arranged at the tip of the balloon-like structure 31. is further fixed to the distal end side.

In the third embodiment of the present invention having the above configuration, when the inside of the balloon-like structure 31 is pressurized, the balloon-like structure 31 stands upright as shown in FIG.

From this state, when the operating string 4B is pulled in the direction of arrow B, the balloon-like structure 31 is bent in the direction of arrow D, as shown in FIG. In this case, since the balloon-like structure 31 is bent about the plurality of pairs of E1 as fulcrums, it can be bent at a larger angle than in the first embodiment of the present invention.

Also, from the state shown in Fig. 13, move the operating string 4A to arrow B.
If the balloon-like structure 34 is pulled in the 15th
As shown in the figure, it is bent in the direction of arrow F, which is opposite to the direction of arrow D.

FIG. 16 is a schematic side view of the fourth embodiment of the present invention;
FIG. 17 is a side view showing a state in which the balloon-like structure 41 is extended by pulling the operating string 4C shown in FIG. 16, and FIG. 18 is a side view showing a state in which the operating string 4C shown in FIG. 16 is a side view showing a balloon-like structure 41 bent in a direction opposite to the bending direction in FIG. 16. FIG. In each figure, the same reference numerals as in FIGS. 1, 8, and 13 represent the same or equivalent parts.

As is clear from the comparison with FIGS. 8 and 9, the fourth embodiment of the present invention has a
A plurality of pairs of openings are formed on the outer periphery of the main body 42 so that the openings 13C having a length of more than 2 and the openings 13D having a length of less than 1/2 are substantially opposed to each other. Sewing extra fabrics 14C and 14D into the openings 13C and 13D, respectively, and attaching the main body 42
The operating string 4C is located on the inner wall of the main body 42, further toward the tip than the extra cloth 14C disposed at the tip of the main body 42.
one end of which is fixed.

Further, the operating string 4C is attached to a pulley 90 rotatably fixed to the side of the inner wall of the main body 42 where the extra fabric 14C is formed, so that the operating string 4C is disposed along the inner wall of the main body 42. 4C is wrapped.

In the fourth embodiment having this configuration, when the inside of the balloon-like structure 41 is pressurized, the balloon-like structure 41 curves as shown in FIG.
Shape its outline.

When the operating string 4C is pulled in the direction of arrow B from this state, the balloon-like structure 41 is deformed in the direction of arrow F,
Then, it is expanded as shown in FIG. Furthermore, when the operating string 4C is pulled, the balloon-like structure 41
As shown in FIG. 18, the balloon-like structure 41 is bent in a direction opposite to the direction in which the balloon-like structure 41 is curved in FIG. 16.

When the pulling of the operating string 4C is stopped, the balloon-like structure 41 returns to the state shown in FIG. 16.

19 is a schematic side view of the fifth embodiment of the present invention, and FIG. 20 is a side view showing a state in which the balloon-like structure 51 is bent by pulling the operating string 4B shown in FIG. Figure 21 shows the operating string 4 shown in Figure 19.
A side view showing a state in which the balloon-like structure 51 is bent by pulling A, and FIG. 22 is a side view showing the state in which the balloon-like structure 51 is bent by pulling A. It is a developed view showing the first to third body composition cloths 51A to 51C or the fourth to sixth body composition cloths 51D to 51F. In addition, in FIGS. 19 to 21, the broken lines indicated by the reference numeral 51P are seams of the balloon-like structure.

The fifth embodiment of the present invention is a modification of the third embodiment shown in FIG.

According to the fifth embodiment, the same effect as using the extra fabric described in the third embodiment can be obtained without using the extra fabric.

That is, the balloon-like structure 5 shown in FIG.
1 is the first and fourth main body constituent fabrics 51A, 51D shown in FIG.
and fifth main body constituent cloths 51B, 51E, and third and sixth main body constituent cloths 51C, 51F shown in FIG. The portion corresponding to the cloth is cut so as to be integrated with the cloth that makes up the main body.

In the following description, cutting the portion corresponding to the excess cloth so as to be integrated with the cloth constituting the main body is referred to as three-dimensional cutting. In addition,
The shape of the main body fabric by three-dimensional cutting is based on this 22nd
It is not limited to what is shown in the figures. Those skilled in the art can create various shapes of the main body fabric by this three-dimensional cutting.

Further, in FIG. 22, the seam allowance is omitted.

The first and second body-constituting fabrics 51A and 51B shown in FIGS. 22A and 22B are curved symmetrically to each other, and each has an allowance portion 58 corresponding to an allowance fabric.

In addition, the fourth and fifth main body constituent cloths 51D, 5
1E is the first and second main body constituent cloth 51
It has the same shape as A and 51B, and each has an allowance portion 58 corresponding to an allowance cloth.

The first to sixth main body constituent fabrics 51A to 51
In F, the parts indicated by the same codes among the codes 71 to 76 (the codes relating to the fourth to sixth main body constituent fabrics are shown in brackets in Fig. 22) have the same length. and are sutured together. Also, codes 71, 73, 74
and 76, and the portions designated 72 and 75 are also of the same length. Then, the balloon-like structure 51 is formed by the suturing.

Within the balloon-like structure 51, a margin 58
A fitting 3A to which one end of the operating string 4A is fixed, and a fitting 3B to which one end of the operating string 4B is fixed are fixed above.

In this state, if the balloon-like structure 51 is fixed to the base 2 and air is sent into the balloon-like structure 51 from the air hole 2A, the balloon-like structure 51
As shown in Figure 9, it stands upright in a substantially cylindrical shape.

Then, when the operating string 4B is pulled in the direction of arrow B, the balloon-like structure 51 moves as shown in FIG.
When the operating string 4A is pulled in the direction of arrow D and in the direction of arrow B, the balloon-like structure 51 is bent into an arc shape in the direction of arrow F, as shown in FIG. 21.

FIG. 23 is a schematic side view of a sixth embodiment of the present invention. In FIG. 23, the same reference numerals as in FIGS. 19 to 22 represent the same or equivalent parts. This sixth embodiment is a modification of the fifth embodiment of the present invention.

In FIG. 23, the balloon-like structure 91 is designated by reference numeral 51 among the fabrics constituting the main body shown in FIG. 22.
It is constructed using only those indicated by A, 51B, 51D, and 51E.

It is difficult for the balloon-like structure 91 with this configuration to maintain an upright posture with respect to the pedestal 2, as in the fifth embodiment shown in FIG. Or assume a bent position as depicted by imaginary lines.

However, by applying force to the outer wall of the balloon-like structure 91 by hand or other means, the balloon-like structure 91 can be swung in the direction of arrow W. Also, if the pedestal 2 is set vertically - in other words,
If the balloon-like structure 91 is turned sideways and the pedestal 2 is rotated, the balloon-like structure 91 can be swung in the direction of arrow W by its own weight.

(Modified example) (1) In the above explanation, the allowance cloth or the allowance part corresponding to the allowance cloth is provided in a cylindrical balloon-like structure, but it is not limited to this. , for example, may be provided in a conical balloon-like structure.

In addition, if a cloth or a string is provided inside the balloon-like structure to define the contour shape when the inside is pressurized, the balloon-like structure can be shaped into a shape other than a cylinder or a cone. The present invention may be applied to such a structure.

(2) Although the technique for obtaining the surplus portion by three-dimensional cutting, which is disclosed in the fifth embodiment, is explained as a modification of the third embodiment, it is not applicable to the modification of the fourth embodiment. It is clear that it is possible.
The application can be easily carried out by those skilled in the art, so a description thereof will be omitted.

(3) Although the balloon-like structure has been described as being such that air is constantly blown into the inside of the balloon-like structure as shown by arrow A in each figure, in the present invention, the increase in internal volume after bending is too large. Therefore, even if the balloon-like structure is sealed after post-processing the seams to make it airtight and making the internal pressure higher than atmospheric pressure, it will still be able to bend and extend well. can. Therefore, the present invention
It can also be applied to balloons, airships, ad balloons, etc.

(4) In the above explanation, the main body and extra cloth of the balloon-like structure were assumed to be cloth coated with resin, etc., but they are not particularly limited to cloth, and they may be made of a film etc. that does not stretch or contract too much. It may also be made of a material that does not.

(5) In the first to fifth embodiments, the bending and stretching means of the balloon-like structure was explained as an operating string whose one end was fixed inside the balloon-like structure. For example, a pneumatic cylinder or the like may be used as the means, and the structure may be bent or extended by pressing the outer wall of the structure.

(6) In the first, third, and fifth embodiments, it is assumed that the margins (openings) facing each other are formed with a length that is less than 1/2 of the outer circumference of the balloon-like structure. As described above, at least one of the mutually opposing margins may have a length that is 1/2 of the outer circumference.

That is, as explained in the sixth embodiment, if the opening is generally set to 1/2 the length of the outer circumference of the balloon-like structure, the balloon-like structure will There is a possibility that it will not be possible to determine whether the main body is in an extended state or a bent state, but even in this case, by attaching the two operating strings closer to the tip of the main body than the margins facing each other. , the form of the balloon-like structure can be arbitrarily selected.

(7) In the above explanation, the extra portion is created by fixing extra fabric to an opening formed in the main body, or by cutting the main body fabric that makes up the main body three-dimensionally and sewing the main body fabric. However, the present invention is not limited to this, and two or four locations on substantially the same circumference of a balloon-like structure previously formed into a cylindrical shape are set in the axial direction of the balloon-like structure. In other words, even if you sew it and shorten it,
Even if the gears are moved in the axial direction, a margin can be obtained.

That is, for example, in a balloon-like structure 61 formed in a cylindrical shape as shown in FIG. If you sew and shorten each point so that they are the same, and sew and shorten the points opposite the points P and Q in the same way,
As shown in FIG. 24B, it is relatively easy to
A pair of margins 68 can be obtained.

(Effects of the Invention) As is clear from the above description, according to the present invention, the following effects are achieved.

That is, since the balloon-like structure is provided with at least one margin having two margins that are substantially opposite to each other, (1) the length of each of the margins is determined by the outer periphery of the balloon-shaped structure. If the length is set to less than 1/2 of the above, the balloon-like structure can be reliably held in an extended state, and from the extended state, in a predetermined direction or in the opposite direction,
It becomes possible to bend the balloon-like structure with a small force, and (2) by setting the length of one of the above-mentioned allowance parts to exceed 1/2 of the outer circumference of the balloon-like structure. , the balloon-like structure can be reliably held in the bent state, and the balloon-like structure can be extended from the bent state with a small force; The balloon-like structure can be bent to the opposite position with a small force. Then, with a small force, the balloon-like structure can be held from a bent state to an extended state, from an extended state to a bent state, or from a bent state to a bent state in a direction opposite to the bending direction.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a first embodiment of the present invention;
Fig. 2 is a schematic plan view of Fig. 1, Fig. 3 is a schematic cross-sectional view taken along line C-C in Fig. 2, Fig. 4 is an enlarged view of section K in Fig. 3, and Fig. 5 is a schematic plan view of Fig. 1. 4 is a developed view of the balloon-like structure shown in FIG. 4, FIG. 6 is a schematic side view showing a state in which the balloon-like structure in FIG. 1 is bent when the operating string 4B of the balloon-like structure is pulled; 7 is a schematic side view showing a state in which the balloon-like structure in FIG. 1 is bent by pulling the operating string 4A, FIG. 8 is a schematic side view of the second embodiment of the present invention, 9 is a schematic side view showing a state in which the balloon-like structure in FIG. 8 is stretched by pulling its operating string; FIG. 10 is a schematic plan view of FIG. 9;
The figure is a developed view of the main body of the balloon-like structure shown in FIG. 8, and FIG. 12 is a schematic diagram showing a state in which the balloon-like structure shown in FIG. 8 is bent in the opposite direction when the operating string of the balloon-like structure is pulled. The side views, FIGS. 13 to 15 are schematic side views of the third embodiment of the present invention, and FIGS. 16 to 18 are schematic side views of the fourth embodiment of the present invention, and FIGS. 19 to 15 are side views. 21 is a schematic side view of the fifth embodiment of the present invention, FIG. 22 is a schematic diagram showing a part of the expanded view of the balloon-like structure in FIG.
3 is a schematic side view of the sixth embodiment of the present invention;
FIG. 4 is a schematic side view of a balloon-like structure for explaining a technique for obtaining a margin by sewing the balloon-like structure in the axial direction. 4A to 4C...operation string, 11, 21, 31, 4
1,51,61,91...Balloon-like structure, 12,
22, 32, 42, 62...Main body, 13A-13
D...Opening, 14A-14D...Extra cloth, 1
5, 58, 68... Surplus portion, 51A... First body constituent fabric, 51B... Second body constituent fabric, 51C
...Third body composition fabric, 51D...Fourth body composition cloth, 51E...Fifth body composition cloth, 51F...
Sixth body composition fabric.

Claims (1)

[Scope of Claims] 1. A balloon-like structure whose contour is formed by filling the inside with pressurized fluid, wherein the main body has a pair of bending fulcrums, each having a pair of bending fulcrums, which are approximately parallel to each other. A balloon-like structure comprising at least one margin having two opposing margins. 2. The length between the fulcrums along the outer periphery of the structure in each of the margin portions is selected to be 1/2 or less of the length of the outer periphery of the structure including each of the fulcrums. A balloon-like structure according to claim 1. 3. The length between the fulcrums along the outer periphery of the structure in one of the leeway parts is selected to exceed 1/2 of the length of the outer periphery of the structure including each of the fulcrums. A balloon-like structure according to claim 1, characterized in that: 4. Claims 1 to 3, wherein the margin is at least one margin member fixed to an opening formed in the main body.
The balloon-shaped structure according to any of the above. 5. The balloon-like structure according to any one of claims 1 to 3, wherein the margin is obtained by fixing a main body component obtained by three-dimensional cutting. 6. The balloon-like structure according to any one of claims 1 to 3, wherein the margin is obtained by sewing and shrinking the main body in the axial direction. 7 A balloon-like structure whose outline is formed by filling the inside with pressurized fluid, the main body having two margins each having a pair of bending fulcrums and substantially opposing each other. What is claimed is: 1. A balloon-like structure comprising: at least one margin having the following: and a drive means disposed on the tip side of the inner wall of the main body relative to the portion where the margin is formed. 8. The balloon-like structure according to claim 7, wherein the driving means is an operating string whose one end is fixed to the inner wall of the main body. 9 The length between the fulcrums along the outer periphery of the structure in each of the margin portions is selected to be 1/2 or less of the length of the outer periphery of the structure including each of the fulcrums, and the operating string 9. The balloon-like structure according to claim 8, wherein one end of the margin is fixed to the tip side of the structure rather than the two margins of the margin. 10 The length between the fulcrums along the outer periphery of the structure in one of the leeway parts is selected to be more than 1/2 of the length of the outer periphery of the structure including each of the fulcrums. 9. The balloon-like structure according to claim 8, wherein one end of the operating string is fixed to the tip side of the structure rather than the one margin. 11. The balloon-like structure according to claim 10, wherein the operating string is arranged along an inner wall of the main body. 12. The balloon-shaped structure according to any one of claims 7 to 11, wherein the margin is at least one margin member fixed to an opening formed in the main body. body. 13. The balloon-like structure according to any one of items 7 to 11, wherein the margin is obtained by fixing a main body component obtained by three-dimensional cutting. 14. The balloon-like structure according to any one of claims 7 to 11, wherein the extra portion is obtained by sewing and shrinking the main body in the axial direction.