JPH02292470A - Structure for end part of film material for openable type film structure - Google Patents

Abstract

PURPOSE:To stabilize a shape during opening and closing and to improve a proof force in a year by a method wherein a pair of film members in the shape of a triangle are arranged to the two end parts in a direction, extending between beams, of a film material are arranged so that a joint therebetween is inwardly foldable. CONSTITUTION:In an openable type film structure in which a film material 12 can be opened and closed in a fold type, a pair of film members 30 and 30 in the shape of a triangle are arranged to the two end parts in a direction, extending between beams, of the film material 12 so that a joint 31 therebetween is inwardly foldable. A substance made of a rigid resin material in which the joint 31 forms a pin type, linear materials 32... formed of the same material as that of the film material 12 are secured to the respective side positions of the triangle and an intersection point between the sides is joined by means of a pin is used for the film members 30 and 30. A pair of the film members 30 and 30 are set in a format in which the joint is positioned slightly inward so that the joint 31 therebetween forms a root part during stretching of the film material 12, and drainage of rainwater is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a structure of an end portion of a membrane material in a suspension membrane structure in which the membrane material can be opened and closed.

(Problems to be solved by the prior art and the invention) At present, the forms of membrane structures that are commonly used include air membrane structures, suspension membrane structures, and frame membrane structures. In such conventional membrane structure structures, improvements have been made to improve lighting conditions by changing the material of the membrane material, but there are problems with the openness of the space, especially when used as a sports facility. I had a problem with this. Therefore, recently it has been proposed that the roof surface of the membrane structure can be opened and closed as needed, but in the case of a method that opens and closes by folding the membrane material itself, the membrane material has an unstable shape when opening and closing. There is a need for a structure that can prevent wrinkles and sagging from occurring. The present invention was developed in view of the above-mentioned conventional problems, and an object of the present invention is to provide a structure for the end portion of a membrane material in a retractable membrane structure based on a novel composite membrane structure.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a retractable membrane structure in which the membrane material can be opened and closed in a folded manner.
At both ends of the membrane material in the inter-beam direction, a pair of triangular membrane members are arranged so that their joints can be folded inward, and the membrane members are made of a hard resin material. The 1111 joint part of the phase ri can be folded inward in the form of a bottle. It is made of the same material as the membrane material, and a highly rigid wire material is fixed to each side of a triangle, and the intersection of each side is a bottle node, or it is simply made of the membrane material. Some are made of the same material.

Further, if the pair of membrane members is set in such a manner that the joint portion of phase H becomes a trough portion when the membrane material is tensioned, so that it is slightly inward, rainwater can be easily drained. (Example) Hereinafter, preferred embodiments of the present invention will be explained with reference to the drawings. 1 to 5 show an embodiment of the present invention, and the suspension membrane structure according to this embodiment includes a suspension cable 10 as a suspension material and a strut cable as a hanging material, as shown in FIG. l1 and membrane material I
2 and a presser cable l3.

The suspension cables 10 are arranged in parallel at predetermined intervals, and have a downwardly curved arc shape as shown in FIGS. 1 and 2. From each suspension cable 10, in this embodiment, 7
A book strut cable 7kl1 is suspended downward, and a membrane material 12 is suspended by each strut cable 11 via a hanging fitting 11a. In addition, at an intermediate position between each suspension cable 10, a holding cable 13 is arranged in parallel with the suspension cable 10 on the membrane material +2U-, and each suspension cable 10 is connected to a predetermined tension device at its terminal end. By applying tension, tension is introduced into the membrane material l2.

In addition, in FIGS. 1 to 3, reference numeral 14 denotes a girder serving as a support member arranged in the direction of the column at both ends of the suspension cable 10, and reference numeral 15 denotes a horizontal beam member arranged at both ends of the structure in the direction of the column. A stiffener in the form of a truss, l
Reference numeral 6 denotes pillars arranged at both ends of each suspension cable 10. From the pillar 16, a horizontal member 17 and an auxiliary pillar 18 are arranged to protrude outward, and a first reinforcing wire is attached to the pillar 16. 19 and a second reinforcing wire 20 are provided.

In addition, pillars 16.1 are located at both ends of the holding cable I3.
A beam member 21 as a supporting member is installed between the two parts.

Further, in this embodiment, both ends of each suspension cable 10 and both ends of each holding cable 13 are . A predetermined sliding device (not shown) allows the membrane material 12 to slide in the column direction along support members at both ends, and a predetermined tensioning device such as an electric jack is arranged at both ends of each suspension cable 10. A predetermined tension can be introduced into the structure, or the tension can be released.

Furthermore, each suspension cable IO and The +iiT film material 12 can be opened and closed together with the holding cable 13.

Therefore, at both ends of the membrane material 12 in the beam direction, as shown in FIG.
As shown in a), two triangular membrane parts 430 are arranged. In this embodiment, the abdominal member 30 is made of a hard resin material, and the joint portion 3l between the membrane members 30 can be folded inward in the form of a bottle. Incidentally, as shown in FIG. 4(a), the pair of membrane members 30 are configured such that when the membrane material l2 is tensed, the mutual joints 31 are inward at t°, The joint portion 31 is set to be a valley portion.

In the suspension membrane structure according to the present embodiment having such a configuration, when the membrane material 12 is brought into the open state. +
The stiffener 15 disposed at one end in the column direction indicated by iii is moved toward the other end in the column direction by the drive device.

When the stiffener 1111 moves to a predetermined position, it reaches the position of the adjacent suspension cable 10. Since the suspension cable 10 is pressed, the suspension cable 10 equipped with sliding means also moves in the column direction together with the stiffener l5.

Thereafter, in the same manner, other suspension cables 10 are sequentially moved in conjunction with the movement of the stiffener 15, and as each suspension cable 1o is moved, the membrane material 12 is also moved along with each strut cable I1 and holding cable 13. As shown in FIGS. 5(a) to 5(c), the membrane material 12 is folded to a certain extent and moved to the other end in the column direction, and when the movement is completed, the membrane material 12 is folded to a certain extent. can be left open.

At this time, the +3ij film recording members 30 at both ends of the film material l2 are +
As the suspension cable 10, etc. described in iii. moves, the joints gradually fold inward from the state shown in FIG. Completely folded.

In addition, in order to close the membrane member 12 from the open state, it is sufficient to perform the operation procedure described in section 2 in reverse, and in parallel with the membrane member 12 being brought into the closed position, the membrane member 3o is also closed (see FIG. 4). The system automatically returns to the state shown in a). In this way, in this embodiment, the pair of triangular membrane members 30
Since the joints 3l are arranged so that they can be folded inward, the membrane member 30 can be automatically folded or opened at the same time when the membrane member 2 is opened or closed. Since the membrane member is made of resin, there will be no wrinkles or sagging when opening and closing.

Furthermore, in the long run, it will have to be folded, stretched, and put into tension quite a number of times, but since it is made of a hard resin material, there will be no problem in terms of strength.

Further, the pair of membrane members 30 are in contact with each other when the membrane material I2 is under tension.
Since the joint 31 is set inward so as to form a valley, rainwater that falls on this part can be smoothly drained away along the joint 31, which is a valley. .

Next, FIG. 6 shows another embodiment of the present invention,
In this embodiment, the membrane member 30 is made of the same material as the membrane material 12, and a hive 32 as a highly rigid wire material is fixed to each side of the triangular shape. +i
ii. The intersection points 33 of the valley sides are respectively bottle nodes, and when the membrane material 12 is opened and closed, the vibration 3 at the joint of the pair of membrane members 30 is
2a as a reference, it can be folded in the same manner as in the above embodiment.

In addition, in this embodiment as well, the vibrator 32a at the mutual joint portion is set to be slightly inward so as to form a valley portion when the material 1+2 is tensioned.

Therefore, this embodiment also achieves the same effects as the first embodiment. Note that it is also possible to use an appropriate wire material other than the vibrator 32 with high rigidity.

Further, the membrane member 30 is made of the same material as the membrane material 12,
It may be constructed so that it can be folded with respect to the joint portion of phase h as in each of the above embodiments.

In each of the above embodiments, an example was shown in which the drive device was attached to the stiffener +5 as a drive member, but if the stiffener l5 is not available due to the condition 31, the drive device may be attached to the stiffener +5 in the column direction instead. Suspension cable located at one end
Attach the drive device to either or both of O and presser cable 13. These can also be used as driving members.

Further, the present invention is not limited to the above embodiments, and the gist of the present invention is that the spacing and span between each suspension member 10, the number of strut cables, etc. can be changed as appropriate according to design conditions. It goes without saying that various modifications are possible without departing from the above.

(Effects of the Invention) The present invention is constructed as described above, and at both ends of the membrane material in the inter-beam direction, pairs of triangular membrane members are arranged so that the joints of the sides can be folded inward. By doing so, it is possible to prevent wrinkles and sagging of the membrane member during opening and closing, and to improve the long-term durability.

In addition, rainwater can be drained smoothly and easily by setting the pair of membrane members so that their joints are slightly inward so that the joints become valleys when the membrane members are tensioned. It becomes possible.

4. DETAILED DESCRIPTION OF THE INVENTION FIGS. 1 to 5 show an embodiment of the present invention, FIG. 1 is a perspective view of a main part of a membrane structure according to this embodiment, and FIG. 2 is a basic diagram of the membrane structure. A conceptual diagram showing the structure, FIG. 3 is a plan view of the membrane structure, FIGS. 4(a) and 4(b) are explanatory diagrams showing the configuration of the end portion of the membrane material, and FIGS. FIG. 5(c) is an explanatory view showing the opening/closing state of the membrane material, and FIGS. 6(a) and 6(b) are explanatory views showing other embodiments of the present invention.

0... Suspension material, 1-... Hanging material (strut cable), 2... Membrane material, 3... Holding cable.

5... Stiffener, 0... membrane member, l...junction, 2...String material (vibrator), 3...Intersection.

Claims (5)

[Claims] (1) Suspension members arranged approximately parallel or radially, membrane members suspended downward from multiple locations of each suspension member by hanging members, and each suspension member at an intermediate position between each of the suspension members. a holding cable disposed on the membrane material in the same direction as the material and applying tension to the membrane material, each suspension material and each holding cable being able to slide along support members at both ends of each; By driving a driving member disposed at one end in the column direction toward the other end in the column direction by a predetermined drive device, the membrane material is opened and closed in a folded manner along with each suspension material and holding cable. In the opening/closing membrane structure, a pair of triangular membrane members are arranged at both ends of the membrane material in the inter-beam direction so that their mutual joints can be folded inward. Structure of the membrane material end in a type membrane structure. (2) The membrane material in the retractable membrane structure according to claim 1, wherein the membrane member is made of a hard resin material, and the mutually joined portions are foldable inwardly in the form of pins. End structure. (3) A patent in which the membrane member is made of the same material as the membrane material, a highly rigid wire material is fixed to each side of the triangle, and the intersection of each side is a pin node. A structure of an end portion of a membrane material in an openable/closable membrane structure according to claim 1. (4) The structure of the end portion of the membrane material in the retractable membrane structure according to claim 1, wherein the membrane member is made of the same material as the membrane material. (5) Claims 1 to 4, wherein the pair of membrane members are configured to be slightly inward so that the joints between the membrane members become valleys when the membrane members are tensioned. A structure of an end portion of the membrane material in the openable membrane structure according to any one of the above.