JPH05171840A - Junction structure of sheet member - Google Patents

Abstract

PURPOSE:To continuously actuate a uniform tensile force on the full length of joined ends of a sheet member and remarkably increase the sealing function. CONSTITUTION:A holding member 32 is formed to show a two-way forked form. This two-way part 32a is continuously formed along the joined end of the sheet 30a. The joined ends of the sheet 30a is held within the two-way part 32a and melted to be bonded. A hook 32b is formed at the outside of the holding member 32. A couple of holders 34a bearing the holding member 32 at both ends of a jointing member 34 are continuously formed along the joined end of sheet 30a. A arc-shaped spring member 36 is arranged on one face 34b of the jointing member 34. The lower side of both ends of the spring member 36 is forced to contact with both ends of the jointing member 34 through a setting plate 38. A fitting rod 44 is inserted between the jointing member 34 and the spring member 36. The fitting rod 44 is fixed to the fastening spring 50 attached to the spring member 36 under the deformed condition that the center of the spring member 36 is compressed to the direction of the jointing member 34.

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 respective connecting end portions to each other while continuously applying substantially uniform tension over the entire length of the connecting end portions of a film body.

[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.

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 prevented from being easily separated even when a large tension is applied to the membrane body. ..

[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, a high liquid-tight function can be obtained between the membrane piece and the presser member in the vicinity of the tightened portion of the bolt or nut at the connecting portion of the above-mentioned membrane, but these bolts or Since the tightening force of the nut is reduced, the liquid tightness is lowered, and there are various problems that rainwater or the like may enter.

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 relates to a meshing member having a connecting end portion of a film body continuously sandwiched, and a hook portion formed on the outside, and the meshing member described above. A connecting member in which bifurcated gripping portions for continuously gripping along the connecting end are formed at both ends, and the connecting member is disposed on at least one surface of the connecting member, and both end portions contact both end portions of the connecting member. A curved spring member and a tightening member that applies a biasing force to the spring member are provided.

Further, it is preferable that a recess is formed on one surface of the connecting member in which the spring member is arranged, at a position closer to the central portion side than the contact portion of the spring member.

[0009]

In the structure for connecting a film body according to the present invention having the above-described structure, the meshing member holding the connection end of the film body is gripped by the gripping part of the connecting member, thereby The hook portion of the engaging member is locked to the respective connecting end portions. At this time, since the locking portion and the gripping portion are continuous along the connection end of the film body, uniform tension can be continuously applied to the connection end over the entire length. ..

Further, on at least one surface of the connecting member,
A curved spring member whose both ends abut on both ends of the connecting member is arranged to apply an urging force to the spring member via the tightening member. Therefore, the spring member added by the tightening member. The urging force can be applied to both ends of the connecting member, that is, the gripping portions formed at the both ends. Therefore, it is possible to increase the gripping force of the gripping portion by the biasing force and to more reliably connect the membrane bodies.

Further, a recess is formed on one surface of the connecting member in which the spring member is arranged, at a position closer to the central portion side than the contact portion of the spring member, so that the spring member is provided at both ends of the connecting member. When the urging force of is applied, it becomes easier to deform the end side of the connecting member from this recess,
The gripping force of the gripping portion can be further increased.

[0012]

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 an exploded perspective view showing a main part of a connecting portion of the film body, and FIG. 4 is an exploded perspective view showing a mounting state of the tightening member.

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 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 plurality of cables (not shown) installed between the upper ends of the outer walls 12, 12. In addition, the machine room 24 and the lift room 2 are provided outside the outer walls 12, 12.
6, an air conditioner, an artificial snowmaking machine, a snow gun and the like are installed in the machine room 24.

The film body 30 constituting the film roof 14 is constructed in its entirety by connecting the film pieces 30a to each other as shown in FIG. The connection of these film pieces 30a is
The holding member 32 holds the connecting ends, and the connecting member 34 holds the pair of holding members 32 holding the film pieces 30a to be connected to each other.

As shown in FIG. 3, the holding member 32 is formed into a bifurcated shape with a flexible member such as flexible high-strength plastic having a relatively large rigidity, and
The bifurcated portion 32a is continuously formed along the connection end of the film piece 30a. Then, the connecting ends of the membrane piece 30a are sandwiched in the bifurcated portion 32a, and the connecting ends and the sandwiching member 32 are integrated by fusing in advance in a factory or the like. Further, on the outside of the holding member 32, a hook portion 32b composed of a plurality of concave and convex portions is formed.

On the other hand, the connecting member 34 is disposed so as to straddle between the connecting ends of the membrane pieces 30a to be connected to each other, and the pair of holding parts 34a for holding the holding member 32 at both ends thereof. Is formed. The grip portion 34a is a film piece 30.
It is formed in a bifurcated shape that is continuous along the connecting end portion of a, and its cross-sectional shape is formed along the outer shape of the holding member 32. Further, the connecting member 34 is formed of a flexible member such as plastic having a certain degree of rigidity, similar to the holding member 32.

Both sides 34b and 34c of the connecting member 34 are formed into curved surfaces that bulge outward.
One side 34b of the upper side 34b of FIG.
An arcuate spring member 36 that is curved outward with a larger curvature is arranged, and a holding plate 38 attached to the lower side of both ends of this spring member 36 is brought into contact with both ends of the connecting member 34.

The central portions of the connecting member 34 and the spring member 36 are arranged in the vertical direction (a pair of gripping portions 3) in the drawing.
Insertion holes 40, 42 are formed so as to pass through in a direction (perpendicular to the arrangement direction of 4a, 34a).
The locking rod 44 as a tightening member is inserted.

A head portion 46 is formed at one end portion (lower end portion in the drawing) of the locking rod 44, and a locking portion 48 is formed at the other end portion (upper end portion in the drawing). The locking portion 48 has a rectangular cross-section, and parallel locking projections 48a are formed on a pair of opposing surfaces. Then, the locking protrusion 48a
Is adapted to be locked at an arbitrary position by a tightening spring 50 provided on the peripheral edge of the insertion hole 42 of the spring member 36.

That is, in the tightening spring 50, the facing portion 50a biased in the closing direction is arranged inside the insertion hole 42, and the locking protrusion 48a is inserted into the insertion hole 42. The facing portion 50a is automatically locked by the locking projection 48a. Further, when the tightening spring 50 is locked to the locking protrusion 48a, the spring member 36 is
The center portion of the is pressed toward the connecting member 34 to be deformed, and the locking protrusion 48a is locked to the tightening spring 50 in this deformed state. Therefore, due to the deformation of the spring member 36, an urging force is generated in the spring member 36, and this urging force is applied to both ends of the connecting member 34 via the pressing plates 38 at both ends.

The spring member 36 and the connecting member 34 are provided on the one surface 34b of the connecting member 34 which is located above in the drawing.
A pair of recesses 52 is formed at a position closer to the central portion side than the contact portion (contacting position of the pressing plate 38) with.

In the membrane roof connection structure of the present embodiment having the above-described structure, the membrane body 30 constituting the roof membrane 14 is formed by connecting a plurality of membrane pieces 30a. The connection is performed via the connecting member 34. That is, the holding member 32 fused to the connection end of the film piece 30a is held by the holding portion 34a of the connecting member 34, so that the hook 3 of the holding member 32 is held in the holding portion 34a.
2b is locked, and in this state, the respective connection end portions of the film piece 30a are connected to each other.

As described above, in the state where the connecting end portion of the membrane piece 30a is connected by the connecting member 34, the locking portion 38 and the gripping portion 34a continue along the connecting end portion of the membrane piece 30a. Therefore, it is possible to grip with a uniform force over the entire length of the connection end portion. Therefore, uniform tension can be continuously applied over the entire length of the connection end portion of the film piece 30a, so that concentration of tensile stress can be prevented and durability of the film body 30 can be improved. It is possible to significantly improve the sealing property of the connection portion.

By the way, when connecting the membrane pieces 30a with each other by the connecting member 34 as described above, the connecting member 34 is used.
The spring member 36 is arranged on one surface 34b of the above, and the spring member 36 is fixed in a pressed state via the locking rod 44 and the tightening spring 50. Therefore, the spring member 36
The urging force is generated by being pressed, and this urging force acts on both ends of the connecting member 34, increasing the holding force of the holding portions 34a formed on both ends of the connecting member 34,
It is possible to connect the membrane bodies more reliably. Further, since the concave portion 52 is formed on the one surface 34b of the connecting member 34 in which the spring member 36 is arranged, at a position closer to the central portion side than the contact portion of the spring member 36, the connecting member from the concave portion 52 is formed. It is easy to deform the portion of the portion 34 near the end portion. Therefore, the spring member 3 is attached to both ends of the connecting member 34.
When the biasing force of 6 acts, the gripping portions 34a formed at both ends of the connecting member 34 can be easily deformed more easily, and the gripping force of the gripping portion 34a can be further increased.

Since the connecting member 34 shown in this embodiment is made of a highly rigid and flexible plastic, it achieves a remarkable weight reduction and, in turn, the roof membrane 14.
It is possible to reduce the weight of itself. Therefore, it is possible to set the overpressure inside the facility, which is required when the roof membrane 14 is inflated, to a low level, and it is possible to achieve the downsizing of the blower. In addition, although the case where the present invention is applied to the membrane roof 14 is disclosed in the present embodiment, it is needless to say that the present invention is not limited to this and can be applied to connection of general membrane bodies.

[0027]

As described above, in the structure for connecting a film body according to claim 1 of the present invention, the connecting end portion of the film body is sandwiched between the sandwiching members, and the sandwiching members are connected to both end portions of the connecting member. By gripping with the bifurcated gripping part formed in the above, the hook part formed on the outside of the sandwiching member is locked in the gripping part, so that the connecting end parts of the film body can be connected to each other. it can. Further, since the sandwiching member and the grasping portion are continuously formed along the connecting end portion of the film body, uniform tension can be continuously applied to the connecting end portion over the entire length. it can. Therefore, it is possible to prevent the tensile stress from concentrating on the connection portion of the film body, significantly improve the durability of the film body, and improve the sealing property of the connection portion.

Further, on at least one surface of the connecting member,
A curved spring member whose both ends abut on both ends of the connecting member is arranged to apply an urging force to the spring member via the tightening member. Therefore, the spring member added by the tightening member. The urging force of the connecting member is applied to both ends of the connecting member, that is, to the gripping portions formed at the both ends, to increase the gripping force of the gripping portion, thereby more reliably connecting the membrane bodies. It can be carried out.

Further, according to the second aspect of the present invention, the recess is formed on one surface of the connecting member on which the spring member is arranged, at a position closer to the central portion side than the contact portion of the spring member. When the urging force of the spring member acts on both ends of the connecting member, it becomes easier to deform the end side of the connecting member from the recess, and the gripping force of the holding portion is further increased. It has various excellent effects.

[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 an enlarged cross-sectional view of a sandwiching member used in one embodiment of the present invention.

FIG. 4 is an exploded perspective view showing an attached state of a fastening member according to an embodiment of the present invention.

[Explanation of symbols]

 10 Indoor artificial ski resort (large space facility) 12 Outer wall 14 Membrane roof 30 Membrane 30a Membrane piece 32 Clamping part material 32b Hook part 34 Connecting part material 34a Gripping part 36 Spring part material 44 Locking bar (tightening member) 50 Tightening 52 Recess

Claims (2)

[Claims] 1. A meshing member having a connecting end portion of a membrane continuously sandwiched and a hook portion formed on the outside, and a bifurcated shape for continuously gripping the meshing member along the connecting end portion. A connecting member having gripping portions formed at both ends, a curved spring member disposed on at least one surface of the connecting member, and having both ends contacting both ends of the connecting member, and applying a biasing force to the spring member. A connecting structure for a film body, comprising: a fastening member. 2. The film body according to claim 1, wherein a recess is formed on one surface of the connecting member on which the spring member is arranged, at a position closer to a central portion side than a contact portion of the spring member. Connection structure.