JPH05179838A - Connection structure of film body - Google Patents

Abstract

PURPOSE:To exert an even tension continuously across the entire length of the connection end part of a film body and also improve its seal property extremely. CONSTITUTION:Film pieces 30a are connected mutually through joint members 32 arranged mounting on the connection end parts of the film pieces 30a. The joint members 32 form a pair of cut off parts 34 on the upper half parts of both ends of the film pieces 30a in a connection direction. The lower sides of plural joint members 32 are connected mutually through a connection plate 36 and formed continuously along the connection end parts of the film pieces 30a. Push-pressed members 40 continuing along the joint members 32 are installed attachably/detachably in the cut off parts 34 respectively. The connection end parts of the film pieces 30a are held between the lower side surfaces of the push-pressed members 40 and the cut off parts 34 through gum plates 46. The gum plates 46 are arranged on both surfaces of the connection end parts of the film pieces 30a. The connection end parts of the film pieces 30a are wound around core materials 48 and folded. A cover 58 is installed mounting across the outer side of the push-pressed member 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for connecting connecting end portions of a membrane so that substantially equal tensions continuously act over the entire length of the connecting end portions.

[0002]

2. Description of the Related Art In recent years, there has appeared a structure in which a roof of a structure such as a large space facility having a pillarless structure such as a dome is constructed as a membrane roof. In this membrane connection structure, the upper end of the outer wall surrounding the large space facility is covered with a membrane made of a waterproof flexible membrane. The membrane roof is inflated (inflated) by injecting air into the facility, and a dome-shaped roof having a bulged central portion in the inflated state is configured. Also, the inflated membrane roof is
To prevent being greatly fluttered by the wind,
It is designed to be supported by cables that are stretched at appropriate intervals.

By the way, since the membrane roof needs to continuously cover a large space facility, its area is remarkably large. Therefore, the membrane body constituting this membrane roof is formed by connecting a plurality of membrane pieces to each other. The whole is formed. At this time, the connection between the membrane pieces is, for example,
No. 24857 (E04H 15/54). That is, the connection fitting is provided with inner and outer presser metal fittings arranged on both sides of the film body across the connecting end portions of the membrane piece, and bolts for disposing the presser metal fittings on both sides at appropriate intervals, It is configured to be tightened via a nut. The connecting end portions of the membrane pieces are sandwiched between the presser pieces so that the connecting portions can be easily prevented from being separated even when a large tension is applied to the membrane body. There is.

[0004]

However, in such a conventional membrane connecting structure, the inner and outer presser fittings provided on the connecting fittings for connecting the respective membrane pieces are connected via bolts and nuts. It can be tightened at appropriate intervals. Therefore, the tension acting between the film bodies connected to each other is concentrated and acts on the tightened portions of the bolts and nuts, and the film bodies are easily damaged at the concentrated portions of the tension. Durability is significantly reduced.

In addition, in the connection part of the above-mentioned film body, a high liquid-tight function can be obtained between the film piece and the presser member in the vicinity of the tightening part of the bolt and nut, but in the part away from the tightening part However, there was a fear that the water level would be lowered and rainwater would invade.

In view of such conventional problems, the present invention allows a uniform tension to be continuously applied over the entire length of the connecting end portion of the film body, and the sealing property thereof can be remarkably improved. It is intended to provide a connection structure of.

[0007]

In order to achieve the above object, the present invention is arranged so as to straddle between the connection end portions of the film bodies to be connected to each other, and the upper half of both end portions in the connection direction of the film body. The connecting member is formed by cutting out a portion to have a convex cross section, and is formed continuously along the connecting end of the film body, and a pair of notches formed in the upper half of both ends of the connecting member. And a pair of pressing members that are respectively continuously and removably attached and that sandwich the connection end portions of the film body with the upper surface of the cutout portion.

Further, it is desirable that a cover is arranged so as to straddle the outer sides of the pair of pressing members.

[0009]

With the above structure, in the connecting structure of the film body of the present invention, the upper surfaces of the pair of notches formed in the upper half portions of both ends of the connecting member and the pair of pressing members arranged in these notches. Between the pressing member and the connecting member by connecting the pressing members to the connecting member while sandwiching the connection end portions of the film members to be connected, respectively, and connecting the pressing member and the connecting member. .. At this time, since the connecting member and the pressing member are continuously formed, the connecting end portion of the film body is substantially evenly connected over its entire length, and
A uniform tension can be continuously applied to this connection end. Therefore, it is possible to prevent the tensile stress from partially concentrating on the connection portion of the film body, and it is possible to uniformly seal the entire length of the film body.

Further, by disposing the cover straddling the outside of the pair of pressing members, the upper side of the connecting member can be made into a liquid-tight structure, and the upper side of the pressing member and the connecting member can be joined. Rainwater is prevented from entering from the section.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 4 show an embodiment of a connection structure of a membrane body according to the present invention, FIG. 1 is a schematic configuration diagram showing a cross section of a large space facility using a roof membrane to which the present invention is applied, and FIG. 2 is An enlarged cross-sectional view of the connection portion of the film body corresponding to line AA in FIG.
FIG. 3 is a perspective view showing a cross section of a main part of a connecting portion of the film body, and FIG. 4 is an exploded perspective view showing a main part of the connecting portion of the film body.

That is, the large space facility shown in FIG. 1 is used as an indoor artificial ski resort 10. Outer walls 12 and 12 which are continuous in the direction perpendicular to the plane of the drawing in the figure are constructed on both sides, and the upper ends of these outer walls 12 and 12 are constructed. A membrane roof 14 is stretched between the parts. The floor surface 18 of the large space portion 16 formed by the outer walls 12 and 12 and the membrane roof 14 is continuously inclined in the extending direction of the outer walls 12 and 12, and the floor surface 18 is artificially attached to the inclined floor surface 18. It is possible to glide on the snow by forming snow on the slope.

The membrane roof 14 is inflated by injecting air into the large space portion 16 in the solid line state in FIG. 1, and the internal air pressure is eliminated in the two-dot chain line state. The deflated (contracted) state is shown. The membrane roof 14 is supported by a cable 20 (see FIG. 2) installed between the upper ends of the outer walls 12, 12.
A machine room 24 and a lift room 26 are provided outside the outer walls 12, 12, and an air conditioner, an artificial snowmaking machine, a snow gun, etc. are installed in the machine room 24.

The membrane body 30 constituting the membrane roof 14 is constructed as a whole by connecting a plurality of membrane pieces 30a to each other as shown in FIG. These film pieces 30a are connected to each other via a connecting member 32 that is arranged so as to straddle between the connection ends of the respective film pieces 30a.

The connecting member 32 has a pair of cutouts 34 formed in the upper half of both ends of the film piece 30a in the connecting direction (horizontal direction in FIG. 2) so as to form vertical and horizontal vertical surfaces. Then
The cross-sectional shape is formed to be convex as a whole. Further, the connecting member 32 is formed as an elongated body having a predetermined length,
By connecting the lower sides of the plurality of connecting members 32 to each other via the connecting plate 36, the connecting members 32 are continuously formed along the connecting end portion of the film piece 30a. The connecting plate 36 is connected to the connecting member 32 via a bolt 38 and a nut 38a.

A pressing member 40 continuous along the connecting member 32 is detachably attached to each of the pair of notches 34. The pressing member 40 is formed along the inner shape of the cutout 34, and the connecting end of the membrane piece 30 a is sandwiched between the lower surface of the pressing member 40 and the cutout 34.

As shown in FIGS. 3 and 4, a fitting projection 42 and a fitting recess 44 are provided between the joining surfaces of the pressing member 40 and the notch 34 which face each other in the connecting direction of the film piece 30a. The pressing member 40 is detachably attached to the connecting member 32 via the fitting convex portion 42 and the fitting concave portion 44. That is, the fitting concave portion 44 is formed in a dovetail groove shape, and the fitting convex portion 42 is formed along the inner shape of the dovetail groove-like fitting concave portion 44. Notches 42a are formed in the fitting protrusions 42 at appropriate intervals, and the fitting protrusions 42 between the notches 42a are formed in the engaging recesses 44.
The recessed portion 44a for fitting the
After fitting the engaging convex portion 42 to the 4a, by moving the pressing member 40 in the longitudinal direction, the engaging convex portion 42 and the engaging concave portion 4
4 and 4 are fitted to each other.

A rubber plate 46 is arranged on each of both sides of the connection end of the film piece 30a sandwiched between the pressing member 40 and the notch 34, and the film piece 30 is interposed via the rubber plate 46.
a is sandwiched.

Further, in the present embodiment, the connecting end portion of the membrane piece 30a is wound around the cord-shaped core member 48 and folded back, and the core is provided between the joint portions of the connecting member 32 and the pressing member 40. A groove 50 that fits the wound portion of the material 48 is formed.

By the way, a cable attachment fitting 56 is attached to the upper center portion of the connecting member 32 via a bolt 52 and a nut 54 penetrating the connecting member 32, and the cable 20 is attached via the cable attachment fitting 56. Supported. In addition, a cover 58 that covers the upper side of the cable attachment device 56 is attached across the outside of the pair of pressing members 40.

With the above-described structure, in the mounting structure of the film body of this embodiment, when connecting the film pieces 30a together, the film piece 30a is connected.
The connecting end portion of a is arranged between the upper surfaces of the pair of cutout portions 34 formed in the upper half portions of both ends of the connecting member 32 and the pair of pressing members 40 arranged in these cutout portions 34, and The rope winding portion at the tip of the portion is fitted into the groove 50. Then, the pressing member 40 is attached to the cutout portion 34 via the engagement protrusion 42 and the engagement recess 44, so that the membrane piece 30 a is attached to the pressing member 40 and the cutout portion 34 via the rubber plate 46.
Sandwiched between and. In this state, the film pieces 30a are connected to each other.

By the way, in the film piece 30a thus connected, the connecting member 32 and the pressing member 40 are continuously formed, so that the connecting end portion of the film body 30 extends over its entire length. It is possible to couple them substantially evenly, and thus to apply continuous and continuous tension to this connecting end. Therefore, the tensile stress can be prevented from partially concentrating on the connection portion of the film body 30, and the entire length of the film body 30 can be uniformly sealed.

In the present embodiment, the pressing member 40 and the notch 34 have their respective joints arranged on the upper side of the connecting member 32, but straddle between the outer sides of the pair of pressing members 40. By disposing the cover 58, the upper side of the connecting member 32 can be made into a liquid-tight structure by the cover 58, so that rainwater can be prevented from entering from the joint portion.

Further, at the connection end of the film piece 30a, the core material 48 is wound and folded back, so that the wound portion serves as a locking portion, and the connection member 32 and the pressing member 40 are separated from each other. The clamping force of the film piece 30a can be greatly increased.
It is possible to increase the connection power of comrades.

Although the present invention discloses the case where the present invention is applied to the film body 30 of the film roof 14 in the present embodiment, it is needless to say that the present invention can be applied to connection of general film bodies without being limited to this. ..

[0026]

As described above, in the film body connecting structure according to the first aspect of the present invention, the upper surfaces of the pair of notches formed in the upper half portions of both ends of the connecting member and the notches. The connecting end portions of the film body to be connected are sandwiched between a pair of pressing members detachably attached to the connecting member and the pressing member, and the connecting member and the pressing member are continuously formed. Therefore, the connection end portions of the film body can be joined substantially evenly over the entire length thereof, and by extension, even tension can be continuously applied to the connection end portions. Therefore, the tensile stress can be prevented from partially concentrating on the connecting portion of the film body, the durability of the film body can be improved, and the entire length of the film body can be uniformly sealed.

According to a second aspect of the present invention, the cover is arranged so as to extend between the outer sides of the pair of pressing members, so that the cover has a liquid-tight structure on the upper side of the connecting member. There are various excellent effects that rainwater can be prevented from entering from the joint between the connecting member and the pressing member on the upper side.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a cross section of a large space facility using a roof membrane to which the present invention is applied.

FIG. 2 is an enlarged cross-sectional view of a portion corresponding to line AA in FIG. 1 showing an embodiment of the present invention.

FIG. 3 is a perspective view showing a cross section of a main part of a connecting portion of a film body showing an embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a main part of a connecting portion of a film body showing an embodiment of the present invention.

[Explanation of symbols]

 10 Artificial ski area (large space facility) 12 Outer wall 14 Membrane roof 30 Membrane 30a Membrane piece 32 Connecting member 34 Notch 40 Pressing member 58 Cover

Claims (2)

[Claims] 1. A membrane which is disposed so as to straddle between the connection end portions of film bodies to be connected to each other, is formed in a convex shape in cross section by cutting out upper half portions of both end portions in the connection direction of the film body, and A connecting member continuously formed along the connecting end of the body, and a pair of notches formed in upper half portions of both ends of the connecting member are continuously and detachably attached to the upper surface of the notch. And a pair of pressing members for sandwiching the connection end portions of the film body between and, and the connection structure of the film body. 2. The structure for connecting a film body according to claim 1, wherein a cover is arranged so as to extend between the outer sides of the pair of pressing members.