JPH0345388B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a balloon-like structure driving device, and in particular, a balloon-like structure driving device that rotates a balloon-like structure filled with pressurized fluid and shaped into a certain shape. The present invention relates to a balloon-like structure driving device suitable for moving and swinging the structure.

(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.

Moreover, when 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 like a balloon to shape the outer shape of the structure, and further, by arranging a simple drive device 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. 54-124490 and Japanese Utility Model Application No. 56-117788.
It is described in the specification and Japanese Patent Application No. 60-92371 (Japanese Unexamined Patent Publication No. 61-251895).

Among the above specifications, Japanese Utility Model Application No. 56-117788 and Japanese Patent Application No. 60-70200 describe a case in which a balloon-like structure that is constantly in an extended state is bent by applying a force in one direction. The technology was also applied for in the 1980s.
No. 92371 discloses a technique for applying a force in one direction to a balloon-like structure that is always in a bent state to cause it to expand.

(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. There may be cases where it is necessary to bend not only in this direction, but also in the opposite direction or in any direction.

There are also cases where it is desired to rotate the balloon-like structure.

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 problem) In order to solve the above-mentioned problem, the present invention provides a structure in which a pair of balloons is formed so as to pull two different parts of the inner wall of the balloon-like structure toward the pedestal side. It is characterized in that at least one set of operating strings is provided, one of the at least one set of operating strings is pulled or drawn out, and at the same time, the other one is drawn out or pulled in the opposite direction to said one operating string. .

As a result of this configuration, in its initial state (the state in which the operating string is not pulled or extended), there is a slack (bulging) portion of the balloon-like structure toward the base of the portion to which the operating string is fixed. begins to form.

From this state, if one of the operating strings of each pair is pulled or let out, the balloon-like structure will further loosen (bulge) or elongate (the degree of swelling) from the fixed part of the operating string to the base side. At the same time, if the other operating string is let out or pulled in the opposite direction, the base side of the fixed part will be stretched or further loosened.

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

FIG. 2 is a schematic perspective view of one embodiment of the present invention.

In FIG. 2, balloon-like structures 11 and 12
is formed into a cylindrical shape made of cloth coated with resin or the like. One end of the balloon-like structure 11 is fixed to the periphery of the pedestal 2, and the other end is fixed to the periphery of the operation string fixing plate 3. The end portion of the balloon-like structure 12 is fixed to the periphery of the operation string fixing plate 3.

Air intake ports 2A and 3A are formed in the base 2 and the operation string fixing plate 3, respectively. Air is fed from the air intake port 2A in the direction of arrow A by a means not shown, and the balloon-like structures 11 and 12 have an outline shape as shown in FIG. .

FIG. 1 is a schematic perspective view of the first embodiment of the present invention when the balloon-like structure in FIG. 2 is shown with imaginary lines, and FIG.
In Fig. 1, a schematic side view seen from the direction of arrow B, Fig. 4 is a schematic sectional view taken along line C-C of Fig. 3, and Fig. 5 is a schematic side view taken along line D-D of Fig. 3. FIG. In each figure, the same reference numerals as in FIG. 2 represent the same or equivalent parts.

In FIG. 1, means for rotating the pulley mounts 6A to 6D for fixing the pulleys 5A to 5D to the pedestal 2 and the connecting portions P of the operating strings 4A to 4D in the direction of arrow F, that is, a motor 70. , crank plate 7
2. The crankshaft 73, motor stand 75, etc. are omitted. In addition, in FIG. 3, in order to make the diagram easier to read, the operating string 4D and the motor stand 7 are
5 and a part of the pulley fixtures 6A and 6C, as well as the operation string 4B, the pulleys 5B and 5D, and the pulley fixtures 6
B, 6D, etc. are omitted. Furthermore, in FIG. 4, the motor 70 is omitted, and the output shaft 71,
The crank plate 72, crankshaft 73, and motor mount 5 are drawn with imaginary lines.

Now, in each figure, the pulleys (operating string guide means) 5A to 5D that guide the operating string are as follows:
Each is rotatably supported by pulley mounts 6A to 6D. Further, as shown in FIG. 4, the pulley mounts 6A to 6D are rotatable relative to the base 2 about shafts 7A to 7D, respectively.
It is fixed to the pedestal 2.

One ends of the pair of operating strings 4A and 4C and the pair of operating strings 4B and 4D are fixed to portions indicated by reference numerals 8A to 8D on the operating string fixing plate 3, and the operating strings 4A to 4D are connected to the operating strings 4B and 4D, respectively. Pulley 5A~
After being wound around 5D, the other ends of each of them are connected to each other at a portion indicated by the symbol P.

The motor 70 is fixed to a motor mount 75 fixed to the base 2. A crank plate 72 is fixed to the output shaft 71 of the motor 70.

The crankshaft 73 is rotatably fixed to the crank plate 72 about its axis, and is further fixed to the connecting portions P of the operating strings 4A to 4D.

In the first embodiment of the present invention having the above configuration, when air is blown in the direction of arrow A from the air intake port 2A of the base 2, the insides of the balloon-like structures 11 and 12 are pressurized, and the balloon-like structures 11 and 12 are pressurized. and 12 are
It gradually begins to swell.

Here, the portion defined by the balloon-like structure 11, the pedestal 2, and the operating string fixing plate 3 tries to have the maximum volume, so the operating string fixing plate 3
moves away from the pedestal 2.

Then, after the pressurization is completed, the operation strings 4A to 4D
When the operating strings 4A to 4D are fully extended, if the connecting portions of the operating strings 4A to 4D are in the position indicated by the symbol P in FIGS. 1 and 4, the operating string fixing plate 3
As shown by the solid line in the figure, it is inclined with respect to the pedestal 2.

Accordingly, the balloon-like structure 12 stands upright at an angle with respect to the pedestal 2, as shown by the solid line in FIG.

Next, the motor 70 is driven by a drive source (not shown).
is energized to rotate the crankshaft 73 in the direction of arrow F. Due to the rotation, the operation string 4A~
When the connecting portion of 4D moves to the position indicated by the symbol P1 in FIG. 4, the operation string fixing plate 3 moves to the position indicated by the symbol 103 in FIG. Turn around.

Furthermore, the connecting portions of the operating strings 4A to 4D are connected to a fourth
When moved to the position indicated by reference numeral P2 in the figure, the operating string fixing plate 3 pivots to the position indicated by reference numeral 203 in FIG. 3 so that the direction of its inclination is further changed.

That is, when the crankshaft 73 fixed to the crank plate 72 is rotated in the direction of arrow F, the operating string fixing plate 3 turns in the direction of arrow E, and accordingly, the balloon-like structure 12 also rotates in the direction of arrow F. As shown in Figure 2, it turns in the direction of arrow E.

FIG. 6 is a schematic perspective view of a second embodiment of the present invention;
FIG. 7 is a schematic perspective view of a second embodiment of the present invention in which the balloon-like structure in FIG. 6 is shown in imaginary lines. In each figure, the same reference numerals as in FIGS. 1 and 2 represent the same or equivalent parts.

In the second embodiment of the present invention, in the first embodiment, one end of each of the operating strings 4A to 4D attached to the operating string fixing plate 3 for fixing the balloon-like structure 12 is fixed to a balloon-shaped structure. It is attached directly to the inner wall of the structure.

In FIGS. 6 and 7, the pedestal 2 includes pulleys 5A to 5A as described in the first embodiment.
5D, a pulley mount (not shown) supporting the pulley;
Means (not shown) for rotating the operating strings 4A to 4D wound around each of the pulleys and the joint portion P of each of the operating strings in the direction of arrow F, etc. are arranged.

The end of the balloon-like structure 21 sewn into a cylindrical shape is fixed to the periphery of the base 2. In addition, on the inner wall of the balloon-like structure 21, the operation strings 4A to 4A to 28D are attached.
4D end is fixed.

In the second embodiment of the present invention having the above configuration, when air is blown in the direction of arrow A from the air intake port 2A formed in the pedestal 2, the balloon-like structure 21 is moved, for example, as shown by the solid line in FIG. Shape its outline.

Then, the connecting portion D (seventh
) is rotated in the direction of arrow F by a means not shown, the balloon-like structure 21 is rotated at 28.
The tip side from the portions A to 28D turns in the direction of arrow E so that the fulcrum of bending moves along the outer periphery of the balloon-like structure 21.

FIG. 8 is a schematic perspective view showing a third embodiment of the present invention, and similarly to FIG. 1, the balloon-like structures 11 and 12 are drawn with imaginary lines. Further, in FIG. 8, the same reference numerals as in FIG. 1 represent the same or equivalent parts.

In FIG. 8, the pedestal 32 has pulleys 5A and 5.
C, and a pulley mount (not shown) that supports the pulleys 5A and 5C.

The operating strings 4A, 4C are wound around the pulleys 5A, 5C, and one end of each of the operating strings 4A, 4C is connected to the operating string fixing plate 3.
It is fixed to parts 8A and 8C, and the other ends of each are connected to each other at parts Q. In addition, as the operation string,
A single string may also be used.

One end of each of the support strings 34B and 34D is attached to the base 3
2 and on both sides of the virtual plane including the operating strings 4A and 4C - that is, for example, the reference numerals 9B and 9D
The other end of each of the parts shown by 9B and 9D of the operation string fixing plate 3 is fixed to the part indicated by .
Portions 8B and 8D that are almost opposite to the portion indicated by
is fixed to.

In the third embodiment of the present invention having the above configuration, after the balloon-like structures 11 and 12 are inflated, the connection point Q of the operating strings 4A and 4C is connected in the same manner as in the first and second embodiments. , by rotating in the direction of arrow F1 by means not shown, or by moving the operating strings 4A and 4C in the direction of arrow H between pulleys 5A and 5C, for example, the balloon-like structure 12 can be rotated between 8B and 5C. It swings in the direction of arrow G using 8D as a fulcrum.

In addition, in this embodiment, the support string 34B,
Although the operating string fixing plate 3 is pulled using the support strings 34D, the balloon-like structure 12 can be swung without being pulled using the support strings 34B and 34D. However, the support strings 34B, 34
By pulling the operating string fixing plate 3 using D, the tension applied to the operating strings 4A, 4C is reduced, so the friction of the wrapped portions of the operating strings with the pulleys 5A, 5C is reduced. Therefore, the use of the support string is particularly advantageous for balloon-like structures whose interior needs to be maintained at high pressure.

FIG. 9 is a schematic perspective view showing a fourth embodiment of the present invention, and similarly to FIG. 1, the balloon-like structures 11 and 12 are drawn with imaginary lines. Further, in FIG. 9, the same reference numerals as in FIG. 1 represent the same or equivalent parts.

In FIG. 9, pulleys 5A to 5D and each pulley 5 are mounted on a pedestal 42, as in the first embodiment.
A pulley mount (not shown) is provided to support A-5D.

In addition, in the first embodiment, as shown in FIG. 4, the pulley mounts 6A to 6D for supporting the respective pulleys 5A to 5D are rotatable about respective shafts 7A to 7D. In this fourth embodiment, the pulley mount is fixed to the pedestal 2 as shown in FIG.
It does not need to be rotatable relative to the base 42.

The operation strings 4A to 4D are connected to the pulleys 5A to 5D, respectively.
and one end of each of them is attached to the operation string fixing plate 3.
8A to 8D. Further, the other ends of the operating strings 4A and 4C and the other ends of the operating strings 4B and 4D are connected to each other.

In the fourth embodiment of the present invention having the above configuration, after the balloon-like structures 11 and 12 are inflated, the operating strings 4A and 4C are connected to the pulleys 5A and 5C, for example.
If the balloon-like structure 12 is moved in the direction of arrow J between the two, the balloon-like structure 12 swings in the direction of arrow G using 8B and 8D as fulcrums.

In addition, the operation strings 4B and 4D may be, for example, a pulley 5B,
When moved in the direction of arrow K between 5D, the balloon-like structure 12 moves in the direction of arrow L with 8A and 8C as fulcrums.
swing in the direction.

Furthermore, by arbitrarily controlling the amount and speed of movement of the operation string, the balloon-like structure 12 can be swung in a direction different from the two directions, or turned in the direction of arrow M, and further, It is possible to control the movement of the balloon-like structure 12 in various patterns.

The movement of each of the operating strings is, for example, performed using a pulley 5.
This can be done by attaching a motor to each of A and 5B, and the movement amount and movement speed of the operating string 4A can be easily controlled by connecting a control device such as a microcomputer to each of the motors. be able to.

In addition, in this case, each operation string and pulleys 5A and 5
A timing belt may be used as the operation string, and pulleys for timing belts may be used as the pulleys 5A and 5B so that no slippage occurs between the control string and the pulleys 5A and 5B.

FIG. 10 is a schematic perspective view showing a fifth embodiment of the present invention. This fifth embodiment is a modification of the third embodiment of the invention shown in FIG.

In FIG. 10, the motor 8 is mounted on the pedestal 82.
0 and a reduction gear 81 are arranged. The speed reducer 81 can be, for example, a gear speed reducer, and reduces the rotation speed of the output shaft of the motor 80 at a predetermined rate. The reduction gear 81 has output shafts protruding in opposite directions, and crank plates 85A and 85C are fixed to the output shafts, respectively.

The crankshafts 86A and 86C are fixed to the crank plates 85A and 85C so as to be rotatable about their axes. The fixation of the crankshafts 86A and 86C is as follows:
such that the position of each crank plate 85A is shifted by 180 degrees from the center of the crankshaft 86.
This is done so that when A is placed at the farthest position from the pedestal 82, the crankshaft 86C is placed at the closest position from the pedestal 82.

The end of the balloon-like structure 21 is fixed to the periphery of the pedestal 82.

The operating string 84A is fixed to the inner wall of the balloon-like structure 21, a portion indicated by the reference numeral 28A, and to the crankshaft 86A. Also,
The operating string 84C is fixed to a portion of the inner wall of the balloon-like structure 21 indicated by the reference numeral 28C and to the crankshaft 86C.

In the fifth embodiment of the present invention having the above configuration, the balloon-like structure 21 is stretched and the operating string 84 is
After A and 84C are fully expanded, the motor 80 is driven using means not shown. Due to the bias, the crank plates 85A and 85C rotate, for example, in the direction of arrow S, so that the balloon-like structure 21 bends and swings in the direction of arrow G.

In addition, in this embodiment, there is no need for a pulley for winding the operating string, so the operating string does not experience friction. Therefore, it is particularly suitable when it is necessary to maintain a high pressure inside the balloon-like structure.

Furthermore, as explained in the third embodiment (FIG. 8), on the inner wall of the balloon-like structure 21,
Of course, a support string for forming a fulcrum for bending the balloon-like structure 21 may be fixed.

Incidentally, since the speed reducer 81 can be easily created by those skilled in the art, a description of its internal structure will be omitted.

FIG. 11 is a schematic perspective view showing a sixth embodiment of the present invention. This sixth embodiment is a modification of the fifth embodiment of the invention shown in FIG.
In FIG. 11, the same reference numerals as in FIG. 10 represent the same or equivalent parts.

In FIG. 11, the motor 8 is mounted on the pedestal 82.
0 and a reduction gear 91 are arranged. The speed reducer 91 has four output shafts that protrude at approximately 90 degrees to each other, and crank plates 85A to 85D are fixed to each of the output shafts. Each of the output shafts can rotate at the same speed.

The crankshafts 86A to 86D are connected to the crank plate 8 so as to be rotatable about their axes.
5A to 85D. As shown in FIG. 11, the crankshafts 86A to 86D are fixed so that they are shifted by 90 degrees from the center of each crank plate 85A to 85D.

The operation strings 84A to 84D are connected to the inner wall of the balloon-like structure 21, which is indicated by reference numerals 28A to 28D, and the crankshafts 86A to 86D.
is fixed to.

In the sixth embodiment of the present invention having the above configuration, the balloon-like structure 21 is stretched and the operation string 84 is
After A to 84D are extended, the motor 80 is energized using means not shown. Due to the bias, for example, the crank plates 85A and 85C move in the direction of arrow S, and the crank plates 85B and 8
By rotating 5D in the direction of arrow T, the balloon-like structure 21 turns in the direction of arrow E.

Incidentally, since the speed reducer 91 can be easily created by those skilled in the art, a description of its internal structure will be omitted.

Further, instead of using the reducer 91 having four output shafts, two sets of the reducer 81 and the motor 80 described in FIG. 10 may be used.

In the above description, each output shaft of the reduction gear was explained as rotating at the same speed, but the present invention does not need to be limited to this. For example, the output shafts of the reduction gear rotate at the same speed. The speeds of the output shafts may be controlled so that only the plates rotate at the same speed, or the crank plates may be controlled so that they rotate at different speeds.

Furthermore, the distances between each crankshaft and the center of each crank plate need not be the same.

Thereby, the rotation of the balloon-like structure can be controlled so that the tip of the balloon-like structure moves along the outline of an ellipse or a complicated shape.

(Modifications) Each of the embodiments described above can be modified as follows.

(1) In the explanation of the first, second, fourth, or sixth embodiments described above, four operating strings (i.e., two pairs) are used to rotate part or the entire balloon-like structure. However, the present invention is not particularly limited to this, and it goes without saying that six (i.e., three pairs) or more operating strings may be used. Detailed embodiments in this case can be easily created from the above-mentioned embodiments, so their explanation will be omitted.

(2) In the first, third, and fourth embodiments,
Although the means for fixing each operating string to the inner wall of the balloon-like structure is explained as using the operating string fixing plate 3, it is not particularly necessary to be a plate-like member, and the outline shape of the balloon-like structure can be shaped. It may be a rod-shaped body shaped in any annular shape.

(3) In the first, third, and fourth embodiments,
Although the explanation has been made assuming that different balloon-like structures 11 and 12 are fixed to the operating string fixing plate 3, the present invention is not limited to this, and as described in the second embodiment, the balloon-like structures 11 and 12 may be integrally molded. The operation string fixing plate 3 may be attached to the inner wall of the balloon-like structure.

(4) In each of the above embodiments, the rotating means of the joint of each operating string is a motor, but the rotating means is not limited to this, and any means may be used. Of course.

Further, the balloon-like structure driving device is configured such that the crank plate, the joint of the operating string, or the main body of the balloon-like structure can be directly moved by hand without providing a rotation means. It's okay to be.

(5) In the first to fourth embodiments, the means for winding each operating string is a pulley, but it may also be a means such as a ring. In this case, the ring does not need to be rotatably fixed to the base as described in the first and second embodiments.

(6) In the first, third, and fourth embodiments,
Operation string fixing plate 3 fixed to balloon-like structure 11
Although the description has been made assuming that the balloon-like structure 12 is further fixed, the balloon-like structure 12 does not necessarily need to be provided.

That is, for example, in FIG. 2, the balloon-like structure that is rotated or swung is the balloon-like structure indicated by the reference numeral 12, but in the present invention,
When the operating string fixing plate 3 of the balloon-like structure 12 is rotated or swung, the balloon-shaped structure 11 is arranged between the operating string fixing plate 3 and the base 2.
However, the balloon-like structure 12 is not necessary because it only deforms with the movement of the operation string fixing plate 3.

The deformation can be applied to the movement of the entire or part of the balloon-like structure when the balloon-like structure is configured to take the outline shape of a fictional creature, for example.

(7) The balloon-like structure has been described as being constantly blown into the inside of the balloon-like structure as shown by arrow A in each figure. Since the increase in volume is not very large, even if the balloon-like structure is sealed after its seams are post-treated to make it airtight and the internal pressure is made higher than atmospheric pressure, it will not bend or bend well. Can extend and rotate. Therefore, the present invention can also be applied to balloons, airships, ad balloons, etc.

(8) In the above explanation, the main body and excess cloth of the balloon-like structure are cloth coated with resin, etc., but they are not limited to cloth alone, and 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.

(9) In the second, fifth, and sixth embodiments, the operation string and the support string were described as being fixed to the inner wall of the balloon-like structure driving device.
In this case, the string may be directly fixed to the inner wall of the balloon-like structure driving device by suturing or the like,
Further, in order to disperse the traction force of the string to the balloon-like structure, it may be fixed using a triangular cloth 100, which will be described later with reference to FIG.

FIG. 12 is a schematic plan view of a triangular cloth 100 for fixing an operating string or a support string to a balloon-like structure.

In FIG. 12, a triangular cloth 100 has a cloth piece having a substantially triangular shape constituting a triangular cloth main body, a seam allowance 101 provided on one side of the cloth piece, and a corner of the main body opposite to the seam allowance 101. A reinforcing ring 102 is fixed to the main body so as to cover the contour of the opening formed.

The reinforcing ring 102 includes operating strings 4A to 4.
D, 84A to 84D, or support string 34B,
34D is wrapped and secured. Then, the suture margin 101 is sutured to the main body of the balloon-like structure.

By using this suture margin 101, the tension of the operating string (or support string) is applied to the balloon-like structure in a distributed manner, so that damage to the balloon-like structure can be prevented. .

(10) In FIGS. 3, 4, 10 and 11, the motor for rotating the crank plate is
Although it is depicted as being placed in the center of the pedestal, it does not need to be placed in the center.

(11) In the first to fourth embodiments, the output shaft of the motor was described as being directly fixed to the crank plate, but an appropriate reduction gear may be provided between the output shaft and the crank plate. Of course it's a good thing.

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

That is, at least one pair of operation strings is fixed to the inner wall of the balloon-like structure or a portion corresponding to the inner wall, and one of the at least one set of operation strings is pulled or let out, and at the same time, the other one is Since the balloon-like structure is fed out or pulled in the opposite direction to the one operating string, the balloon-like structure can be bent from the stretched state in a predetermined direction, the opposite direction, or any direction, or stretched from the bent state. Or it can be rotated.

Further, the balloon-like structure has the above-mentioned bending, elongation,
Since both a slack portion and an elongated portion are formed during operations such as turning, there is less change in the internal volume of the balloon-like structure during the operation, and the operation can be performed with a relatively small driving force. It can be done with

Therefore, a small-sized device can be used as the operating string pulling means for driving the balloon-like structure.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of the first embodiment of the present invention when the balloon-like structure in FIG. 2 is shown with imaginary lines, FIG. 2 is a schematic perspective view of the first embodiment of the present invention, 3 is a schematic side view of the first embodiment of the present invention in FIG. 1 as seen from the direction of arrow B, FIG. A schematic cross-sectional view taken along the line D-D of Fig. 3, No. 6
The figure is a schematic perspective view of the second embodiment of the present invention, and FIG. 7 is a schematic perspective view of the second embodiment of the present invention when the balloon-like structure in FIG. 6 is shown with imaginary lines.
FIG. 8 is a schematic perspective view of a third embodiment of the present invention in which a balloon-like structure is shown in phantom lines, and FIG. 9 is a schematic perspective view of a fourth embodiment of the present invention in which a balloon-like structure is shown in phantom lines. FIG. 10 is a schematic perspective view of a fifth embodiment of the present invention, FIG. 11 is a schematic perspective view of a sixth embodiment of the present invention, and FIG. 12 is a schematic perspective view of a triangular cloth. FIG. 2, 32, 42, 82...Pedestal, 3...Operation string fixing plate, 4A-4D, 84A-84D...Operation string, 5A
~5D...Pulley, 6A~6D...Pulley attachment, 7A~
7D... Axis, 11, 12, 21... Balloon-like structure, 7
0,80...Motor, 72,85A-85D...Crank plate, 73,86A-86D...Crankshaft, 81,91...Reducer.

Claims (1)

[Scope of Claims] 1: a pedestal; a balloon-like structure whose end portion is fixed to the pedestal and whose contour is formed by filling the inside with pressurized fluid; and within the balloon-like structure: At least one pair of operating strings are paired to pull two different parts of the wall toward the pedestal, and one of the at least one set of operating strings is pulled or let out, and at the same time, the other one is pulled, A balloon-like structure driving device characterized by comprising an operating string pulling means that extends or pulls an operating string in a direction opposite to the one operating string. 2. The balloon-like structure driving device according to claim 1, wherein the operating string is directly attached to an inner wall of the balloon-like structure that is towed toward the pedestal. 3. The balloon-shaped balloon-shaped structure according to claim 1, wherein the operating string is attached via an operating string fixing means fixed to the inner wall of the balloon-shaped structure that is towed toward the pedestal. Structure drive device. 4. The balloon-like structure driving device according to claim 3, wherein the operation string fixing means is a plate-shaped body or a rod-shaped body formed into a substantially annular shape. 5. According to any one of claims 1 to 4, wherein the operating string pulling means is an operating string guiding means fixed to the base and a means for moving each of the operating strings. The balloon-like structure driving device described above. 6. The balloon-like structure driving device according to claim 5, wherein there are a plurality of sets of operating strings, each of which is connected together. 7. The balloon-like structure driving device according to claim 5, wherein the operating strings include a plurality of sets, and the operating strings are connected to each other. 8. The balloon according to any one of claims 5 to 7, wherein the moving means is a crank mechanism that rotates the connecting part of the operating string around an arbitrary point. shaped structure drive device. 9. The crank mechanism rotates the connecting portion of the operating string in a plane substantially parallel to the pedestal, and the operating string guide means rotates the connecting portion of the operating string in a plane substantially parallel to the pedestal, and the operating string guide means rotates the connecting portion of the operating string in a plane substantially parallel to the pedestal. 9. The balloon-like structure driving device according to claim 8, wherein the balloon-like structure driving device is fixed to the base so as to be rotatable about the center. 10 Claims 5 to 9, wherein the operating string guide means is a pulley.
The balloon-like structure driving device according to any one of the items. 11. The operating string pulling means is a crank mechanism in which each of the operating strings is connected to a crankshaft that rotates at a predetermined radius around a central axis of rotation thereof. The balloon-like structure driving device according to any one of the first to fourth items. 12. The balloon-like structure driving device according to claim 11, wherein there are a plurality of sets of the operating strings, and the crank mechanism sequentially pulls each of the operating strings.