JP2754998B2 - Connection structure of membrane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for connecting connection ends to each other so that substantially uniform tension acts continuously over the entire length of the connection end of a membrane.

[0002]

2. Description of the Related Art In recent years, there has appeared a structure in which a roof of a large space facility or the like having a pillarless structure such as a dome is constructed as a membrane roof. In this connection structure of the membrane, the upper end of the outer wall surrounding the large space facility is covered with a membrane formed of a waterproof flexible membrane. The membrane roof is inflated (expanded) by injecting air into the inside of the facility, and a dome-shaped roof having a central portion swelled in the inflated state is formed. Also, the inflated membrane roof,
To prevent large fluttering by wind,
The cable is supported by cables stretched at appropriate intervals.

[0003] Incidentally, since the membrane roof needs to continuously cover a large space facility, its area becomes extremely 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, a
As described in Japanese Patent Publication No. 24857 (E04H 15/54), this is performed via a connection fitting. That is, the connection fitting includes inner and outer presser fittings disposed on both sides of the film body so as to straddle between the connection ends of the film pieces. It is configured to be tightened via a nut. And, since the connection end portions of the film pieces are sandwiched between the presser foot, even if a large tension acts on the film body, it is possible to prevent the connection portion from being easily separated. I have.

[0004]

However, in such a conventional connection structure for a membrane member, the inner and outer holding members provided on the connection fitting for connecting the respective membrane pieces are connected to each other through bolts and nuts. They can be tightened at appropriate intervals. Therefore, the tension acting between the membranes connected to each other concentrates on the tightened portions of the bolts and nuts, and the membranes are easily broken at the concentrated portions of the tension, and thus, the tension of the membranes increases. The durability is significantly reduced.

[0005] Further, in the connection portion of the membrane, a high liquid-tight function can be obtained between the membrane piece and the presser foot in the vicinity of the tightening portion of the bolt and the nut, but in the portion away from the tightening portion, the liquid-tightness is obtained. And there is a risk that rainwater or the like may enter.

In view of the foregoing, the present invention has been made in consideration of the above-described conventional problems, and enables a uniform tension to be continuously applied over the entire length of a connection end portion of a film body, and a sealing property of the film body to be significantly improved. The purpose of the present invention is to provide a connection structure.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is arranged so as to extend between connection ends of membranes to be connected to each other and to connect the connection ends of the membranes. A connecting member formed continuously along the connecting member and formed with fitting grooves for fitting the connection ends of the film body at both ends in the connection direction of the film body, and is detachably disposed in the fitting groove. , While sandwiching the connection end of the film body with the fitting groove,
A pair of fixing members that are continuous along the extending direction of the connecting member, and are disposed astride the pair of fixing members, and are fastened to the connecting member via a fastening unit. And a pressing member for generating a clamping force of the film body.

Further, a fastener is provided between the pressing member and the connecting member in a direction in which the connecting member extends, and the pressing member and the connecting member are connected to each other through the fastener. It is desirable to do.

Further, it is desirable that a cover is disposed so as to straddle the outside of the pair of fixing members.

[0010]

According to the structure described above, in the film connection structure of the present invention, the fitting grooves formed at both ends of the connecting member and the fixing member disposed in these fitting grooves are mutually connected. Each fixing end of the film is clamped between the connecting member and the fixing member by clamping the fixing member via the pressing member, with the connecting end of the film to be connected sandwiched therebetween. Connected. At this time, since the connecting member and the fixing member are formed continuously, the connection end portions of the film body are connected substantially uniformly over the entire length thereof, and are continuously connected to the connection end portions. And an even tension can be applied. Therefore, it is possible to prevent the tensile stress from being partially concentrated at the connection portion of the film body,
Sealing can be performed evenly over the entire length of the membrane.

Further, a fastener is provided between the pressing member and the connecting member in a direction in which the connecting member extends, and the pressing member and the connecting member are connected to each other through the fastener. By doing so, the pressing member is substantially evenly coupled to the connecting member over the entire length thereof, so that the tightening force of the pressing member is applied substantially uniformly to the entire fixing member, and Can be more evenly tightened.

Further, by disposing the cover over the outside of the pair of fixing members, the upper side of the connecting member can be made to have a liquid-tight structure. Rainwater is prevented from entering from the pressure contact portion.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show one 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. FIG. 2 is an enlarged cross-sectional view of a connection portion of the film body corresponding to line AA in FIG. 1.
FIG. 3 is a perspective view showing a cross section of a main part of a connection portion of the film body.

That is, the large space facility shown in FIG. 1 is used as an indoor artificial skiing area 10, and outer walls 12, 12 are formed on both sides in a direction perpendicular to the plane of the drawing, and the upper ends of these outer walls 12, 12 are constructed. A membrane roof 14 is stretched between the sections. The floor surface 18 of the large space 16 composed of the outer walls 12 and 12 and the membrane roof 14 is continuously inclined in the direction in which the outer walls 12 and 12 extend. The slopes are made up of snow and can be slid on the snow.

The membrane roof 14 is shown in a solid line state in FIG. 1 as being inflated by injecting air into the large space portion 16, and in a two-dot chain line state, the internal air pressure is eliminated. And deflated (contracted). The membrane roof 14 is supported by a cable 20 (see FIG. 2) which is 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 snow machine, a snow gun, and the like are installed in the machine room 24.

As shown in FIG. 2, the whole membrane 30 constituting the membrane roof 14 is constructed by connecting a plurality of membrane pieces 30a to each other. The connection between the film pieces 30a is performed via a connecting member 32 that is arranged so as to straddle between the connection ends of the film pieces 30a.

The connecting member 32 is made of a reinforced plastic such as vinyl chloride or a lightweight metal such as aluminum. The connecting members 32 are connected to the upper ends of the connecting direction of the membrane pieces 30a (left and right directions in FIG. 2). A pair of fitting grooves 34 for fitting the ends are formed. The connecting member 32 is formed as a long body having a predetermined length, and a plurality of connecting members 3 are provided.
By connecting the two lower sides to each other via the connecting plate 36, these connecting members 32 are formed continuously along the connecting end of the film piece 30a. The connecting plate 36 is connected to the connecting member 32 via a bolt 38 and a nut 38a.

In the pair of fitting grooves 34, a pair of fixing members 40 formed continuously along the extending direction of the connecting member 32 are detachably disposed. The fixing member 40 is formed substantially along the cross-sectional shape of the fitting groove 34, and the connection end of the film piece 30a is sandwiched between the fixing member 40 and the fitting groove 34. I have. The fixing member 40 is made of a reinforced plastic such as vinyl chloride or a lightweight metal such as aluminum, similarly to the connecting member 32.

A pressing member 42 is disposed between the pair of fixing members 40 so as to straddle the fixing member 40. The pressing member 42 is connected to the fixing member 40 via a bolt 44 and a nut 44a as fastening means. It is fastened and fixed to the connecting member 32. On the opposite side of the fixing member 40, an inclined surface 40a inclined toward the center of the connecting member 32 as it goes downward in FIG.
Are formed along these inclined surfaces 40a. Further, engaging projections 4 are provided on both sides of the pressing member 42 in the width direction.
2a, and an engaging recess 40b is formed on the opposite side of the fixing member 40 to fit the engaging protrusion 42a.

Therefore, the pressing member 42 is
By being tightened via the nut 44a, this tightening force acts as a downward pressing force of the fixing member 40 via the engaging protrusion 42a and the engaging concave portion 40b, and the fixing is performed via the inclined surface 40a. The member 40 acts as a pressing force against the outer side surface of the fitting groove 34, and the force for pinching the connection end of the membrane piece 30a is significantly increased.

Further, the pressing member 42 and the connecting member 3
A fastener 46 which is continuous in the extending direction of the connecting member 32 is interposed between the joining surfaces of the connecting member 32 and the pressing member 42. The pressing member 42 is an auxiliary member other than the bolts 44 and the nuts 44a via the fastener 46. Is combined with The fastener 46 is configured as a magic fastener.

Further, a fitting recess 42b for fitting the cable 20 is formed at the upper end of the pressing member 42, and the fitting recess 42b is fitted between the upper ends of the fitting recess 42b. A holding member 48 for fixing the cable 20 from above is engaged and attached.

Further, a cover 50 is arranged so as to straddle the outside of the pair of fixing members 40, and the cover 50 is provided with locking pieces 5 having both ends bent inward.
0a is detachably engaged with an engagement groove 42c formed on the outside of each of the fixing members 40.

In this embodiment, the connection end of the membrane piece 30a is folded by winding a cord-like core material 52, and the folded portion is fused. The end is fitted in a fitting groove 54 formed between the joining portion of the connecting member 32 and the fixing member 40. Further, rubber plates 56 are arranged on both sides of the connection end of the film piece 30a, and the connection end is connected to the fixing member 40.
And the fitting groove 34 via these rubber plates 56.

At the upper central portion of the connecting member 32, a cable mounting bracket 56 is mounted via a bolt 52 and a nut 54 penetrating the connecting member 32, and the cable 20 is connected via the cable mounting bracket 56. Supported. Further, a cover 58 that covers the upper side of the cable attaching device 56 is attached so as to straddle the outside of the pair of b pressing members 40.

With the above structure, in the film body mounting structure of this embodiment, when connecting the film pieces 30a, the fitting grooves 34 formed at both ends of the connecting member 32 and the fitting grooves 34 are formed. 34, between the film pieces 3
0a. Then, by tightening via the pressing member 42 laid across the fixing members 40, each connection end of the film piece 30 a connects the rubber plate 56 between the fixing member 40 and the fitting groove 34. The film pieces 30a are sandwiched in a pressure-contact state via each other, and the film pieces 30a are connected to each other.

By the way, since the connecting member 32 and the fixing member 40 are formed continuously along the connection end of the film piece 30a, the connection end of the film piece 30a is substantially formed over its entire length. The connection ends are evenly connected, so that an even tension can be continuously applied to the connection end. Therefore, it is possible to prevent the tensile stress from being partially concentrated at the connection portion of the film piece 30a, so that the durability of the film body 30 itself can be improved and the film body 30 can be uniformly spread over the entire length thereof. Can be sealed.

In this embodiment, the pressing member 4
A fastener 46 is provided between the connecting member 32 and the connecting member 32 in a direction in which the connecting member 32 extends, and the pressing member 42 and the connecting member 32 are auxiliary connected via the fastener 46. As a result, the pressing member 42 can be connected to the connecting member 32 substantially uniformly over the entire length thereof. Therefore, the pressing member 42 receives a coupling force by the fastener 46 in addition to the fastening force by the bolt 44 and the nut 44a.
The pressing force applied to zero is increased, and the fixing member 40 can be substantially uniformly applied to the entirety. Therefore, the tightening force at the connection end of the membrane piece 30a can be increased, and the tightening force can be made more uniform, so that the sealing performance can be further improved.

Further, since the cover is disposed so as to extend between the outsides of the pair of fixing members 40, the upper side of the connecting member 32 can be formed in a liquid-tight structure. Rainwater is prevented from entering from the inside of the pressure contact portion with the fixing member 40.

In this embodiment, the case where the present invention is applied to the membrane 30 of the membrane roof 14 has been disclosed. However, it is needless to say that the present invention can be applied to connection of a general membrane without being limited to this. .

[0031]

As described above, in the film body connection structure of the present invention, the connection end of the film body is sandwiched between the fitting groove of the connecting member and the fixing member via the pressing member. At this time, since the connecting member and the fixing member are formed continuously, the connecting end portions of the film body are almost evenly connected over the entire length thereof. An even tension can be continuously applied to the connection end. Therefore,
It is possible to prevent the tensile stress from being partially concentrated at the connection portion of the film body, to improve the durability of the film body, and to seal evenly over the entire length of the film body.

In the present invention, a fastener is provided between the pressing member and the connecting member in a direction in which the connecting member extends, and the pressing member and the connecting member are connected via the fastener. The auxiliary member is connected to the connecting member so that the pressing member is substantially uniformly connected to the connecting member over the entire length thereof, so that the tightening force of the pressing member is substantially uniformly applied to the entire fixing member. Consequently, the tightening force at the connection end of the film body can be made more uniform.

Further, according to the present invention, by disposing a cover over the outside of the pair of fixing members,
A liquid-tight structure can be provided on the upper side of the connecting member, and various excellent effects can be obtained such that rainwater can be prevented from entering from a pressure contact portion between the fitting groove and the fixing member.

[Brief description of the 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 one embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a main part of a connection portion of a film body showing one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Artificial skiing area (large space facility) 12 Outer wall 14 Membrane roof 30 Membrane 30a Membrane piece 32 Connecting member 34 Fitting groove 40 Fixing member 42 Pressing member 46 Fastener 50 Cover

Claims (3)

(57) [Claims] 1. A film body which is arranged so as to straddle between connection ends of films to be connected to each other, is formed continuously along the connection ends of the films, and has a connection direction of the films. Connecting members each having a fitting groove formed at both ends thereof for fitting a connection end of the membrane, and detachably disposed in the fitting groove, and a connection end of the membrane between the fitting groove; A pair of fixing members that sandwich the portion and are continuous along the extending direction of the connecting member, and are disposed astride the pair of fixing members,
A connection structure for a film body, comprising: a pressing member that generates clamping force of the film body to the fixing member by being tightened to a connecting member via a fastening unit. 2. Between the pressing member and the connecting member,
Provide a fastener that is continuous in the extending direction of this connecting member,
The connection structure for a film body according to claim 1, wherein the pressing member and the connecting member are connected to each other through the fastener. 3. The connection structure for a film body according to claim 1, wherein a cover is arranged so as to extend between the outsides of the pair of fixing members.