JP5683792B2 - Film fastener and method for producing film structure using the same - Google Patents

Description

  The present invention relates to a film fastener that can be used for manufacturing a film structure mainly composed of a film, a film structure using the film fastener, and a method for manufacturing the film structure. Moreover, this invention relates to the building which has a film roof structure using the film fastener of this invention.

  Conventionally, a structure using a film as a roofing material is often used as an agricultural or horticultural house. For example, in Patent Document 1, a moya formed of a metal material is attached to the roof of an agricultural house that is framed in a house shape with a metal material, and a U-shaped section and a lower portion of the opening are formed thereon. Attach a fixing bracket consisting of a vertical plate part integrally formed with the haze engaging part integrally formed at the lower part of the vertical plate part, and the upper and lower surfaces of a rectangular metal frame on the U-shaped section of the fixing bracket And fitting the upper side of the panel-shaped hollow flat roofing material with a translucent film on the lower flat side roofing material between the bottom surface of the U-shaped section and the upper surface of the haze. An agricultural house roof structure characterized by being fitted is disclosed.

  Patent Document 2 discloses a roof of a building in which two transparent resin films are fixed to a rafter from a purlin to an eaves girder and configured in a bag shape. A transparent resin film roof of a building is disclosed, characterized in that the air is supplied to maintain the bag-like object in a tensioned state and the air in the bag-like object is discharged from the exhaust port.

  When using a film for a roofing material etc., it is necessary to use the member for fixing the edge part of a film. For example, in Patent Document 3, in a resin film-covered building in which a resin film is stretched on a frame constituting a skeleton of a building to form a roof and / or a wall, the lower edge of the resin film is attached to the frame. The resin film-covered construction is characterized in that a water-permeable sheet is inserted into the presser part to be fixed to the resin film so that its upper end is located on the inner surface side of the resin film and its lower end is located outside the building. Things are disclosed. Further, Patent Document 4 has a skeleton composed of a plurality of arched pipes arranged side by side and a straight pipe for shoulders and a purlin connecting them in a parallel state. A green house in which a transparent film is stretched, and a film fastening material extending in a girder direction is fixed at least near both ends of the straight pipe for shoulders via a single clamp and an intermediate fitting attached to the side of the single clamp. A green house having a reinforcing structure is disclosed.

  Patent Document 5 discloses a light-shielding filter in which a light-shielding medium is introduced into a space at least partially defined by a light-transmitting material, a light-shielding building member having the light-shielding filter, and the light-shielding construction member. All or part of the building is disclosed.

JP-A-8-89094 JP 2004-81205 A JP 2005-204650 A JP 2007-306886 A JP 2008-045447 A

  A building having a film structure mainly composed of a film is generally not sufficient in structural strength, and thus is limited to a green house or the like that does not require high structural strength. Moreover, since the structure of the film fastener for fixing a film is also complicated, construction at the time of fixing a film using a film fastener is complicated and time-consuming. Therefore, an object of the present invention is to obtain a film fastener for obtaining a film structure that is easy to construct and has sufficient strength even when used as a film roof structure. Moreover, it aims at obtaining the construction method which can construct easily the film structure using the film fastener, the building which used the film structure as a roof film structure, and them.

  The present invention is a film fastener for fixing a film end including a columnar film mounting member and an insertion member having substantially the same cross section, and the film mounting member inserts the film and the insertion member, A film mounting groove for mounting a film, a first wall surface at least partially facing the film mounting groove, and at least a part facing the film mounting groove, facing the first wall surface across the film mounting groove. A level difference between the first wall surface and the second wall surface in a stepwise manner from the narrowest width to the widest width in the insertion direction of the film and the insertion member. A film clip having a section and an insertion member having a cross-sectional dimension larger than the narrowest width of the stepped section.

The preferable aspect of the film fastener of this invention is shown below. In the present invention, these embodiments can be appropriately combined.
(1) The insertion member is a V-shaped insertion member, and the V-shaped insertion member is joined to one of the long sides of the two strip-shaped flat plate portions so as to have a substantially V-shaped cross section, thereby forming a vertex portion. The angle θ formed by the two strip-shaped flat plate portions can be elastically changed.
(2) The angle when passing the V-shaped insertion member through the narrowest part of the stepped portion while the ends of the two strip-shaped flat plate portions of the V-shaped insertion member are in contact with the first wall surface and the second wall surface. theta = theta ₁ has an angle theta = theta ₀ so as to satisfy that becomes smaller than the respective width and angle theta = theta ₀ of the two strip flat portion when not applied external force the two strip plate portion .
(3) At least a part of the second wall surface of the film mounting member is a flat surface, the flat surface of the second wall surface is a V-shaped insertion member, the apex portion is in the film mounting groove, and two strip-shaped flat plate portions One end of the strip-shaped flat plate portion is adjacent to the widest portion of the stepped portion, and the other outer surface of the strip-shaped flat plate portion is in contact with the second wall surface. The entire side surface is formed in contact with at least a part of the flat surface of the second wall surface.
(4) Of the widths of the two belt-like flat plate portions of the V-shaped insertion member, the smaller width L and the angle θ = θ ₀ when no external force is applied to the two belt-like flat plate portions are expressed by the formula Wmin <L · sin θ ₀ (Wmin is the narrowest width of the stepped portion).
(5) Of the widths of the two belt-like flat plate portions of the V-shaped insertion member, the smaller width L and the angle θ = θ ₀ when no external force is applied to the two belt-like flat plate portions are expressed by the formula Wmax ≦ L · sin θ ₀ (Wmax is the widest width of the stepped portion).
(6) The two belt-like flat plate portions of the V-shaped insertion member have the same width, and the angle θ = θ ₀ when no external force is applied to the two belt-like flat plate portions is 10 to 80 degrees.
(7) The film fastener further includes a cover member that can be installed so as to cover the film mounting groove.
(8) N sets (N is an integer) of film mounting grooves, a film mounting member having a first wall surface and a second wall surface, and 1 or more and N or less V-shaped insertion members.
(9) N is 4, and each has two film mounting grooves on both sides of the film mounting member.

  Moreover, this invention is a film structure to which a film is fixed using a film fastener.

  Moreover, this invention is a building which has a film roof structure using the above-mentioned film fastener.

  The present invention is also a method for producing a film structure using the above-described film fastener, wherein the film edge is located outside the film mounting groove, and the distance on the film from the film edge is greater than the second wall surface. A step (a) of inserting the film end into the film mounting groove so that the first wall surface is closer, and a step of inserting the insertion member into the film mounting groove and placing the insertion member in the film mounting groove ( b) and by pulling the film on the second wall surface toward the outer side of the film mounting groove, one end of the insertion member is adjacent to the widest portion of the stepped portion, and the other end of the insertion member is And a step (c) of disposing an insertion member at a position in contact with two wall surfaces.

  In the above-described method for producing a film structure of the present invention, the insertion member is preferably a V-shaped insertion member, and in step (b), the V-shaped insertion member starts from the apex of the V-shaped insertion member. Is inserted into the film mounting groove, and the V-shaped insertion member is passed through the narrowest width portion of the stepped portion while the two strip-shaped flat plate portions are in contact with the first wall surface and the second wall surface through the film. The insertion member is disposed in the film mounting groove, and in step (c), one end of the insertion member is one end of the two belt-like flat plate portions of the V-shaped insertion member, and the insertion member The other end is the entire other outer surface of the belt-like flat plate portion.

  By this invention, construction is easy and the film fastener for obtaining the film structure which has sufficient intensity | strength also when using as a film roof structure can be obtained. Moreover, the film structure using the film fastener, the building using the film structure as a roof film structure, and the construction method which can construct them easily can be obtained.

It is a cross-sectional schematic diagram of an example of the film structure using the film fastener of this invention. It is a cross-sectional schematic diagram of an example of the film mounting member contained in the film fastener of this invention. It is a cross-sectional schematic diagram of the film structure using the film fastener of this invention which has another example of a film mounting member. It is a cross-sectional schematic diagram of an example of a V-shaped insertion member which is an example of an insertion member. It is a cross-sectional schematic diagram of another example of a V-shaped insertion member. It is a cross-sectional schematic diagram which shows the process of inserting a film edge part into a film mounting groove part. It is a cross-sectional schematic diagram which shows a mode when a V-shaped insertion member passes the narrowest width part of a level | step-difference part. It is a cross-sectional schematic diagram which shows a mode that the V-shaped insertion member passed through the narrowest width part of the level | step-difference part, and reached | attained the wide part. It is a cross-sectional schematic diagram of an example of the film mounting member contained in the film fastener of the 2nd aspect of this invention. It is a cross-sectional schematic diagram of an example of the cover member contained in the film fastener of the 2nd aspect of this invention. It is a cross-sectional schematic diagram which shows mounting | wearing with a 1st film and a V-shaped insertion member with respect to the film mounting groove part of the outer side of the film mounting member contained in the film fastener of the 2nd aspect of this invention. It is a cross-sectional schematic diagram which shows mounting | wearing with a 1st film, a 2nd film, and a V-shaped insertion member with respect to the film mounting groove part inside the film mounting member contained in the film fastener of the 2nd aspect of this invention. is there. It is a cross-sectional schematic diagram which shows the state which installed so that a cover member might cover with respect to the film mounting groove part of the film mounting member contained in the film fastener of the 2nd aspect of this invention, and inserted the volt | bolt. It is a cross-sectional schematic diagram which shows mounting | wearing with the nut A by the side of a film mounting member with respect to a volt | bolt from the lower side of the film fastener of the 2nd aspect of this invention. It is a cross-sectional schematic diagram of the film structure of the 2nd aspect of this invention. It is a film mounting member contained in the film fastener of the 2nd aspect of this invention, Comprising: It is a cross-sectional schematic diagram of the film mounting member which has a keyway. It is a film mounting member contained in the film fastener of the 2nd aspect of this invention, Comprising: It is a plane schematic diagram of the A section of FIG. It is a front schematic diagram (a), a side schematic diagram (b), and a top schematic diagram (c) of a bolt having a key. It is an upper surface schematic diagram of an example of the building which used the film structure of this invention as a film roof structure. It is a front schematic diagram of an example of the building which used the film structure of the present invention as a film roof structure. It is a cross-sectional schematic diagram of the film structure of the 2nd aspect of this invention, Comprising: It is an example by which two films are fixed to the same film mounting part. It is a cross-sectional schematic diagram of the film structure of the 2nd aspect of this invention, Comprising: It is an example with which one film is fixed to a film mounting part. It is a cross-sectional schematic diagram of an example of a flat plate type insertion member which is an example of an insertion member. An example of the film structure using the film fastener of this invention which has a flat type insertion member as an insertion member is shown. An example of typical sectional drawing of the light-shielding building using the film fastener of this invention is shown.

  The film fastener 1 of the present invention is a film fastener 1 for fixing an end portion of a film that is a sheet-like flexible material. The cross-sectional schematic diagram of an example which has fixed the film edge part to FIG. 1 using the film fastener 1 of this invention is shown. The film fastener 1 of the present invention includes a columnar body film mounting member 10 and an insertion member having substantially the same cross section. In FIG. 1, the case where the V-shaped insertion member 20 is used as an insertion member is shown. Since the sections of the film mounting member 10 and the insertion member (V-shaped insertion member 20) are substantially the same, the film fastener 1 formed using them is also a columnar body having substantially the same cross section. In the film fastener 1 of the present invention, the film 50 is inserted by inserting the film 50 into the film mounting groove portion 17 of the film mounting member 10 and further inserting the insertion member (V-shaped insertion member 20) into the film mounting groove portion 17. Can be fixed. Since the step portion 13 exists on the first wall surface 11 of the film mounting member 10, the insertion member (V-shaped insertion member 20) inserted at a predetermined position does not come out of the film mounting groove portion 17, and the film mounting member The first wall 11 and the second wall 15 and the insertion member (V-shaped insertion member 20) can be fixed with the film 50 interposed therebetween. Moreover, since the film 50 can be fixed only by inserting the film 50 and the insertion member (V-shaped insertion member 20) into the film mounting groove portion 17, the construction is very easy, and the fixing of the film 50 is troublesome. It does not take.

  The insertion member that can be used for the film fastener 1 of the present invention is not limited to the V-shaped insertion member 20. As the insertion member, for example, a flat insertion member (flat plate insertion member 25) having a schematic cross-sectional view shown in FIG. 23 can be used. The insertion member used in the present invention has a cross-sectional dimension larger than the narrowest width (Wmin) of the step portion 13 of the first wall surface 11 of the film mounting member 10. In this specification, the “cross-sectional dimension” of the insertion member refers to the distance between any two points on the cross-section of the insertion member. Specifically, for example, the insertion member is a flat plate insertion member 25 as shown in FIG. If at least one of the cross-sectional dimensions of the insertion member is larger than the narrowest width of the step portion of the first wall surface 11 of the film mounting member 10, one end of the portion having the cross-sectional dimension of the insertion member is replaced with the step portion 13. When the end is disposed so as to be in contact with the second wall surface 15, the film mounting member 10 can remain inside the film mounting groove 17. Specifically, as shown in FIG. 24 as an example of the film fastener 1 of the present invention using the flat plate insertion member 25, the cross sectional dimension of the insertion member (flat plate insertion member 25) is larger than the narrowest width (Wmin). When L is included, the insertion member (flat plate insertion member 25) can remain in the film mounting groove portion 17. As a result, the film 50 is sandwiched between the film mounting member 10 and the insertion member (flat plate insertion member 25), and the film 50 can be fixed.

  In order to more reliably attach the insertion member to the film attachment groove portion 17, the insertion member may have a cross-sectional dimension larger than the widest width (Wmax) of the step portion 13 of the first wall surface 11 of the film attachment member 10. preferable. Further, it is preferable to use the V-shaped insertion member 20 as the insertion member in order to further ensure the attachment of the insertion member to the film attachment groove portion 17.

  As described above, when the film fastener 1 of the present invention is used, the film 50 is simply inserted by inserting insertion members such as the V-shaped insertion member 20 and the flat plate insertion member 25 into the film mounting groove 17 into which the film 50 is inserted. Since it can be easily fixed, it is easy to install the film. Moreover, since the cross section of the film mounting member 10 can be made substantially U-shaped, the structural strength of the film mounting member 10 itself can be increased. Therefore, the film fastener 1 of the present invention can be used for applications that require sufficient structural strength, such as rafters for structures such as buildings, and particularly preferably for film roof structures. The present invention will be described in detail below.

  The film fastener 1 of this invention is the film fastener 1 for fixing a film edge part. The film fastener 1 of the present invention includes a columnar film mounting member 10 and an insertion member (for example, a V-shaped insertion member 20) having substantially the same cross section. In the following description, the case where the V-shaped insertion member 20 is used as an insertion member will be described as an example, but the present invention is not limited to this.

  In FIG. 2, the cross-sectional schematic diagram of an example of the film mounting member 10 contained in the film fastener 1 of this invention is shown. The film mounting member 10 included in the film fastener 1 of the present invention is a columnar body having substantially the same cross section. As shown in FIG. 2, the film mounting member 10 included in the film fastener 1 of the present invention includes a film mounting groove portion 17, a first wall surface 11, and a second wall surface 15.

  The film mounting groove portion 17 included in the film mounting member 10 of the present invention is a groove-shaped portion for mounting the film 50 by inserting the film 50 and the V-shaped insertion member 20. As shown in FIG. 2, the film mounting groove portion 17 is defined by at least a part of both sides by the first wall surface 11 and the second wall surface 15, and the film insertion for inserting the film 50 and the V-shaped insertion member 20 is performed. An opening 18 is provided. The part opposite to the film insertion opening 18 via the film mounting groove 17 is preferably closed without being an opening. With such a structure, the cross-sectional shape of the film mounting member 10 can be made substantially U-shaped, so that the structural strength of the film mounting member 10 itself can be increased.

  At least a part of the first wall surface 11 included in the film mounting member 10 faces the film mounting groove 17 and defines at least a part of one surface of the film mounting groove 17.

  As shown in FIG. 2, at least a part of the second wall surface 15 included in the film mounting member 10 faces the film mounting groove portion 17 and faces the first wall surface 11 with the film mounting groove portion 17 interposed therebetween. That is, the second wall surface 15 defines at least a part of one surface of the film mounting groove portion 17 that faces the film mounting groove portion 17 across the film mounting groove portion 17.

  When using the V-shaped insertion member 20 as an insertion member, it is preferable that the 2nd wall surface 15 has a flat surface in at least one part. In the film fastener 1 of the present invention, when the V-shaped insertion member 20 is disposed at a predetermined position in the second wall surface 15, at least the second wall surface 15 in contact with the V-shaped insertion member 20 is This is because a flat surface is preferable for ensuring the mounting of the V-shaped insertion member 20.

  As shown in FIG. 2, the first wall surface 11 has a step portion 13. The stepped portion 13 means that the width between the first wall surface 11 and the second wall surface 15 from the narrowest width (Wmin) to the widest width (Wmax) in the insertion direction of the film 50 and the V-shaped insertion member 20. A stepped portion that becomes wider stepwise. That is, the step portion 13 has a structure that forms an overhang with respect to the film mounting groove portion 17. The “narrowest width (Wmin)” and “widest width (Wmax)” are both the widths between the first wall surface 11 and the second wall surface 15 in the “step 13”. “Wmin)” refers to the narrowest width in the stepped portion 13, and “widest width (Wmax)” refers to the widest width in the stepped portion 13. In the present specification, the narrowest portion of the step portion 13 is referred to as “narrow portion 12”, and the widest portion of the step portion 13 is referred to as “wide portion 14”. Since the first wall surface 11 has the step portion 13, as shown in FIG. 1, when the V-shaped insertion member 20 is inserted into the film mounting groove portion 17, the insertion member has a cross-sectional dimension larger than the widest width of the step portion (see FIG. 5, one end of the V-shaped insertion member 20 (flat plate end 23) is captured by the stepped portion 13. As a result, the V-shaped insertion member 20 inserted into the film mounting groove portion 17 stays without coming out, and can be fixed with the film 50 sandwiched between the V-shaped insertion member 20 and the film mounting member 10. Further, as shown in FIG. 24, even when a flat plate insertion member 25 is used as the insertion member, one end portion of the flat plate insertion member 25 is caught by the stepped portion 13, similarly to the V-shaped insertion member 20. The film 50 can be fixed. The film 50 can be similarly fixed also when using an insertion member of another shape.

  From the viewpoint of ease of manufacturing the film mounting member 10, the first wall surface 11 is preferably a flat surface except for the step portion 13. However, the first wall surface 11 only needs to have the stepped portion 13 for the purpose of catching the V-shaped insertion member 20 in the film mounting groove portion 17, and for example, the film mounting member 10 shown in FIG. The wall surface of the irregular structure like the first wall surface 11 may be used.

The material of the film mounting member 10 can be appropriately selected depending on the application. From the viewpoint of obtaining high structural strength, the material of the film mounting member 10 is preferably a metal material such as aluminum or steel, and is particularly preferably aluminum because it is lightweight and easy to process.

  The film fastener 1 of the present invention includes a columnar insertion member having substantially the same cross section. From the viewpoint of securing the film 50, it is preferable to use the V-shaped insertion member 20 as the insertion member. FIG. 4 shows a schematic cross-sectional view of an example of the V-shaped insertion member 20. The V-shaped insertion member 20 that can be used as the insertion member of the film fastener 1 of the present invention has one of the long sides of the two belt-like flat plate portions 21 coupled so that the cross section is substantially V-shaped. This is the shape that forms the portion 22. The two strip-shaped flat plate portions 21 may be separate flat plates and may have a structure in which the two flat plates are combined so as to form the apex portion 22. Moreover, it can also shape | mold integrally as a cross section becomes a V shape. From the viewpoint of easy manufacture, it is preferable to manufacture the V-shaped insertion member 20 by integrally molding so that the cross section is V-shaped. Moreover, it is preferable that the film mounting member 10 and the V-shaped insertion member 20 have the same length (the length for mounting the film 50). Note that the cross-sectional dimensions of the V-shaped insertion member 20 include the widths L1 and L2 of the belt-like flat plate portion 21. From the viewpoint of securing the film 50, at least one of the widths L1 and L2 of the belt-like flat plate portion 21 of the V-shaped insertion member 20 needs to be larger than the narrowest width of the step portion. It is preferable that the width is larger than the width.

In the V-shaped insertion member 20 that can be used as the insertion member of the film fastener 1 of the present invention, it is preferable that the angle θ formed by the two belt-like flat plate portions 21 can be elastically changed. In the present invention, the “angle θ” refers to the smaller one of the angles formed by the two belt-like flat plate portions 21 as shown in FIG. Further, the angle θ when no external force is applied to the V-shaped insertion member 20 is defined as “θ ₀ ”. Further, as shown in FIG. 7, the angle θ when the V-shaped insertion member 20 passes through the narrowest width portion of the stepped portion 13 is defined as “θ ₁ ”. Further, as shown in FIG. 1, the angle θ when the V-shaped insertion member 20 reaches the wide portion of the stepped portion 13 and is mounted in the film mounting groove portion 17 is defined as “θ ₂ ”.

When the V-shaped insertion member 20 is inserted into the film mounting groove portion 17 from the film insertion opening 18, the end portions of the two strip-shaped flat plate portions 21 are in contact with the first wall surface 11 and the second wall surface 15, and the V-shaped insertion member 20. Through the narrowest part of the step 13. At this time, the angle θ = θ ₁ when passing through the narrowest portion of the V-shaped insertion member 20 is smaller than the angle θ = θ ₀ when no external force is applied to the two strip-shaped flat plate portions 21. Is preferred. The V-shaped insertion member 20 can select the width and the angle θ = θ ₀ of each of the two strip-shaped flat plate portions 21 so as to have a shape that satisfies such a condition of the angle θ.

That is, in the V-shaped insertion member 20 that can be used as the insertion member of the film fastener 1 of the present invention, when the V-shaped insertion member 20 is inserted into the film mounting groove 17 from the film insertion opening 18, two It is preferable that the V-shaped insertion member 20 passes through the narrowest width portion of the stepped portion 13 while the end portion (flat plate end portion 23) of the belt-like flat plate portion 21 is in contact with the first wall surface 11 and the second wall surface 15. When V-shaped insertion member 20 passes through the portion of the narrowest of the stepped portion 13, the distance between the flat end 23 when the angle theta = theta ₀ is preferably longer than the narrowest width. As a result, when the V-shaped insertion member 20 passes through the narrowest width portion of the step portion 13, the two flat plate end portions 23 are in contact with the first wall surface 11 and the second wall surface 15 and receive external force. θ is reduced to an angle θ ₁ . When the flat plate end 23 reaches the wide portion 14 of the stepped portion 13, the angle θ becomes larger than the angle θ ₁ , so that the flat plate end 23 of the V-shaped insertion member 20 can be caught by the stepped portion 13. It can be done.

In addition, in the V-shaped insertion member 20 that can be used as the insertion member of the film fastener 1 of the present invention, the smaller one of the widths L1 and L2 of the two belt-like flat plate portions 21 of the V-shaped insertion member 20 The angle θ = θ ₀ when no external force is applied to L (L1 or L2) and the two strip-shaped flat plate portions 21 is expressed by the equation (1).
Wmin <L · sinθ ₀ (Wmin is the narrowest width of the stepped portion 13) (1)
It is preferable to satisfy. As shown in FIG. 4, when L = L1, D = L1 · sin θ ₀ . Therefore, if the V-shaped insertion member 20 satisfies the above formula (1), the stepped portion is inserted when the V-shaped insertion member 20 is inserted so that the strip-shaped flat plate portion 21 having the length L2 contacts the second wall surface 15. The angle θ ₁ when passing through the narrowest portion of 13 is smaller than the angle θ ₀ .

Further, in the V-shaped insertion member 20 that can be used as the insertion member of the film clip 1 of the present invention, the smaller width L (L1) of the widths of the two belt-like flat plate portions 21 of the V-shaped insertion member 20 Or L2) and the angle θ = θ ₀ when no external force is applied to the two strip-shaped flat plate portions 21 is expressed by the equation (2).
Wmax ≦ L · sinθ ₀ (Wmax is the widest width of the stepped portion 13) (2)
It is preferable to satisfy. In this case, when the V-shaped insertion member 20 reaches the wide portion of the step portion 13 and the angle θ = θ ₂ in the state where the V-shaped insertion member 20 is mounted in the film mounting groove portion 17 is not applied with an external force to the two strip-shaped flat plate portions 21. smaller than the angle θ _0. That is, since the V-shaped insertion member 20 has elasticity, in this case, a force can be applied to the mounted film 50 to press it against the film mounting member 10. Therefore, the film 50 can be mounted more reliably by the film fastener 1 of the present invention.

  In the above formulas (1) and (2), the “smaller width L” when the widths of the two strip-shaped flat plate portions 21 are equal (when L1 = L2) means L = L1 = L2. Needless to say. As shown in FIG. 5, the actual V-shaped insertion member 20 has a thickness t and may have a shape such as rounded corners for ease of handling. In addition, since the film 50 is mounted, the thickness of the film 50 needs to be taken into consideration. In that case, the above formulas (1) and (2) are appropriately corrected in consideration of the thickness t of the V-shaped insertion member 20, the roundness of the corners, the thickness of the film 50, and the like. be able to.

In the V-shaped insertion member 20 that can be used as the insertion member of the film fastener 1 of the present invention, it is preferable that the widths of the two belt-like flat plate portions 21 are the same. This is because if the widths of the two belt-like flat plate portions 21 are the same, they can be used without worrying about the direction of the V-shaped insertion member 20. Further, the angle θ = θ ₀ when no external force is applied to the two belt-like flat plate portions 21 is 10 to 90 degrees, preferably 15 to 60 degrees, to the film mounting groove portion 17 of the V-shaped insertion member 20. It is preferable from the point of ensuring the mounting of the film 50 when mounting.

  As the material of the V-shaped insertion member 20, a material having sufficient structural strength for film mounting and having elasticity so that the angle θ can be changed can be appropriately selected and used. Specifically, the V-shaped insertion member 20 can be selected from plastic materials such as vinyl chloride, metal materials such as carbon fiber materials and metal spring materials, and the like. A plastic material such as vinyl chloride is preferably used as the material of the V-shaped insertion member 20 because it can be manufactured by integral molding.

  As shown in FIG. 1, the V-shaped insertion member 20 when the film 50 is mounted in the film mounting groove portion 17 has the apex portion 22 in the film mounting groove portion 17, and one of the two belt-like flat plate portions 21. Two end portions are arranged adjacent to the widest width portion of the stepped portion 13, and the other outer surface of the strip-shaped flat plate portion 21 is in contact with the second wall surface 15. This is because the area of the film 50 sandwiched between the second wall surface 15 and the V-shaped insertion member 20 can be increased by such an arrangement, and the mounting of the film 50 can be ensured. At this time, it is preferable that at least a part of the second wall surface of the film mounting member is a flat surface. That is, since the portion of the second wall surface 15 with which the V-shaped insertion member 20 contacts is a flat surface, the film 50 can be securely attached. Therefore, in the film fastener 1 of the present invention, the V-shaped insertion member 20 has the apex portion 22 in the film mounting groove portion 17, and one end portion of the two belt-like flat plate portions 21 is the widest width of the step portion 13. And the other outer surface of the strip-shaped flat plate portion 21 is a flat surface of the second wall surface 15 when the second outer surface of the strip-shaped flat plate portion 21 is in contact with the second wall surface 15. It is preferable that the flat surface of the second wall surface 15 is formed so as to be in contact with at least a part of the surface.

  In the above, the case where the V-shaped insertion member 20 is used has been described as an example. Moreover, as for the 2nd wall surface 15 of the film fastener 1 of this invention, the part which contact | connects an insertion member does not necessarily need to be a flat surface. Further, the surface of the portion of the second wall surface 15 that is in contact with the insertion member has a shape similar to the surface shape of the corresponding insertion member, so that the film 50 sandwiched between the second wall surface 15 and the insertion member can be securely attached. can do.

  The film fastener 1 of the present invention includes the film mounting member 10 and the V-shaped insertion member 20 having the above-described structure, thereby securely fixing the film 50 as shown in FIG. 1 to form a film structure. be able to.

  The film that can be used for the film structure of the present invention may be a flexible sheet-like material, and can be appropriately selected depending on the use of the film structure. For example, when the film structure of the present invention is used as a film roof structure for a building, a transparent or translucent film can be used for daylighting. The film that can be used for this purpose is specifically a sheet-like material made of a fluorine-based resin having a visible light transmittance of 90% or more, for example, fluorine disclosed in JP-A No. 2000-287599 A resin film can be used. In addition, films such as polyolefin films and vinyl chloride films can also be used. Moreover, the ultraviolet part of sunlight can be removed by using an ultraviolet cut film. Since these films are required to have appropriate strength and durability, the thickness of the sheet-like material can be 10 to 250 μm, preferably 60 to 250 μm, more preferably 100 to 200 μm.

  Next, the manufacturing method of the film structure of the present invention will be described using the film structure shown in FIG. 1 as an example.

  The film fastener 1 described above is used in the method for producing a film structure of the present invention. That is, an insertion member such as a film mounting member 10 and a V-shaped insertion member 20 corresponding thereto as shown in FIG. 2 is prepared.

  Next, in the manufacturing method of the present invention, the film edge 53 is located outside the film mounting groove 17, and the distance on the film 50 from the film edge 53 is closer to the first wall surface 11 than to the second wall surface 15. Thus, the step (a) of inserting the film end into the film mounting groove 17 is included. That is, the film is arranged so that the main part of the film that becomes the film portion of the film structure enters the film mounting groove portion 17 along the second wall surface. FIG. 6 is a schematic cross-sectional view showing this process. In the present invention, the “film edge portion 53” refers to the portion of the outermost edge of the film 50, and the “film edge portion” is a portion adjacent to the film edge portion 53, and is attached to the film clip 1. A portion of the film 50 having a certain width including a portion to be mounted and fixed.

Next, the manufacturing method of the present invention includes the step (b) of inserting the insertion member into the film mounting groove 17 and arranging the insertion member in the film mounting groove 17. When the V-shaped insertion member 20 is used as the insertion member, the V-shaped insertion member 20 is inserted into the film mounting groove 17 with the apex 22 of the V-shaped insertion member 20 at the head, and the two strip-shaped flat plate portions 21 are inserted. Is in contact with the first wall surface 11 and the second wall surface 15 through the film 50, and the V-shaped insertion member 20 passes through the narrowest width portion of the step portion 13, so that the V-shaped insertion member 20 is passed through the film mounting groove portion 17. Place in. Cross-sectional schematic diagrams of this step are shown in FIGS. FIG. 7 shows a state where the V-shaped insertion member 20 passes through the narrowest width portion of the step portion 13. At this time, the angle θ of the V-shaped insertion member 20 is smaller than θ ₀ and becomes θ ₁ . FIG. 8 shows a state after the V-shaped insertion member 20 passes through the narrowest width portion of the step portion 13 and reaches the wide width portion. In addition, although a process (b) can be performed after a process (a), a process (a) and a process (b) can also be performed substantially simultaneously. That is, the film 50 and the V-shaped insertion member 20 are overlapped, and the insertion of the film end portion into the film mounting groove portion 17 and the insertion of the V-shaped insertion member 20 into the film mounting groove portion 17 can be performed almost simultaneously. it can.

Next, in the manufacturing method of the present invention, by pulling the film on the second wall surface 15 side toward the outside direction of the film mounting groove portion 17, one end of the insertion member is adjacent to the widest width portion of the step portion 13, And the process (c) which arrange | positions an insertion member in the position where the other end of an insertion member contacts the 2nd wall surface 15 is included. Note that “one end of the insertion member” and “the other end” are a portion adjacent to the widest portion of the stepped portion 13 of the insertion member when the insertion member is mounted so as to fix the film 50, and The part in contact with the second wall surface 15 is said. When the V-shaped insertion member 20 is used as the insertion member, one end of the insertion member is one end portion (flat plate end portion 23) of the two strip-shaped flat plate portions 21 of the V-shaped insertion member 20. The other end of the insertion member refers to the entire other outer surface of the belt-like flat plate portion 21. That is, by pulling the film 50 on the second wall surface 15 side toward the outer side of the film mounting groove portion 17, the V-shaped insertion member 20 has the apex portion 22 in the film mounting groove portion 17, and the two belt-like flat plate portions 21. One of the end portions is adjacent to the widest portion of the stepped portion 13, and the other outer side surface of the belt-like flat plate portion 21 can be disposed at a position in contact with the second wall surface 15. As a result, a film structure whose cross-sectional schematic diagram is shown in FIG. 1 can be obtained. When the V-shaped insertion member 20 is disposed at such a position, the film 50 is sandwiched between the film mounting member 10 and the V-shaped insertion member 20, and the film 50 is securely fixed. Even if the film 50 is pulled from the opposite direction to the film edge 53, it is not easily removed. In addition, since the film edge part near the film edge 53 is an unnecessary part, it can process suitably, such as cut | disconnecting. When the insertion member is mounted so as to fix the film 50, the angle θ of the V-shaped insertion member 20 is preferably an angle θ ₂ smaller than θ ₁ from the viewpoint of securing the film 50.

  Next, the film fastener 1 of another aspect of the present invention will be described. In addition, although the case where the V-shaped insertion member 20 is used as an insertion member is demonstrated to the film fastener 1 of this aspect as an example, other insertion members, such as the flat plate insertion member 25, can also be used.

  In FIG. 9, the cross-sectional schematic diagram of an example of the film mounting member (four-groove film mounting member 100) contained in the film fastener 1 of the 2nd aspect of this invention is shown. Moreover, in FIG. 10, the cross-sectional schematic diagram of an example of the cover member 200 contained in the film fastener 1 of the 2nd aspect of this invention is shown. Moreover, in FIG. 15, the cross-sectional schematic diagram of an example of the film structure using the film fastener 1 of this aspect is shown. As shown in FIG. 15, the film fastener 1 of this aspect further includes a cover member 200 that can be installed so as to cover the film mounting groove portion 17 in addition to the four-groove film mounting member 100 and the V-shaped insertion member 20. Including. By including the cover member 200, a film for sandwiching the attached films (first film 51 and second film 52) at least a part of a portion where the four-groove film mounting member 100 and the cover member 200 are in contact with each other. The seal portion 250 can be used. The double film (the first film 51 and the second film 52) is sealed by sandwiching, and the space between the double films can be a sealed space (sealed portion). Further, the cover member 200 has a steadying portion 201. The steady rest 201 can be fitted to the film insertion opening 18 of the four-groove film mounting member 100. Therefore, when the cover member 200 has the steadying portion 201, the cover member 200 can be easily mounted on the four-groove film mounting member 100. A portion where the first film 51 and the second film 52 are overlapped plays a role as a seal (sealed portion) for preventing air leakage.

  A four-groove film mounting member 100 shown in FIG. 9 has a line-symmetric cross-sectional shape, and includes a set of film mounting groove portion 17, first wall surface 11 and second wall surface 15 (referred to as “film mounting portion”). Is a structure in which four are arranged. That is, the first film mounting portion 101 and the second film mounting portion 102 are disposed in the left half of FIG. 9, and the third film mounting portion 103 and the fourth film mounting portion 104 are disposed in the right half. Accordingly, the four-groove film mounting member 100 has two film mounting groove portions 17 on both sides. That is, by using a structure like the four-groove film mounting member 100, the film fastener 1 of the present invention can mount a plurality of films by having a structure having a plurality of film mounting portions. Generally, the film fastener 1 of the present invention includes a film mounting member having N sets (N is an integer) of film mounting grooves 17, a first wall surface 11, and second wall surfaces 15 (N film mounting portions). , And N insertion members (for example, V-shaped insertion member 20). Depending on the application of the film fastener 1, the number of films that can be mounted on the film mounting member can be appropriately selected to design the film mounting member. In addition, since it is not always necessary to mount the film 50 on all the film mounting portions, the film fastener 1 has one or more and N or less insertion members (V-shaped depending on the number of films 50 to be fixed. An insertion member 20) can be included. A plurality of films 50 can be mounted on one film mounting portion.

  In the film roof structure 300 using a film for a roof of a building, the roof material film is often a double film. Therefore, in this case, N described above is 4, and the film mounting member has four film mounting portions, and has four insertion members. Specifically, as shown in FIG. 15, it is configured to have a structure in which a pair of double films (first film 51 and second film 52) on both sides of the film fastener 1 are fixed. be able to.

  Next, the manufacturing method of the film structure using the film fastener 1 of the second aspect of the present invention as shown in FIG. 15 will be described by taking the case of using the V-shaped insertion member 20 as an example.

  In the manufacturing method of this aspect, the four-groove film mounting member 100 as shown in FIG. 9, the four V-shaped insertion members 20 having a predetermined shape as shown in FIG. 4 or FIG. Such a cover member 200 is prepared.

  Next, in the manufacturing method of this embodiment, the first film 51 and the V-shaped insertion member 20 are mounted in the film mounting groove portion 17 outside the four-groove film mounting member 100 as shown in an example of a schematic cross-sectional view in FIG. To do. In addition, in the manufacturing method of this aspect, the mounting method of the first film 51 and the V-shaped insertion member 20 to the four-groove film mounting member 100 is the same as in the case of the aspect shown in FIG. At this time, the film between the film edge portion 53 of the first film 51 and the step portion 13 of the first wall surface 11 has a sufficient length, so that the inner side as described below. The first film 51 can be mounted again in the film mounting groove 17.

  Next, in the manufacturing method of this aspect, the second film 52 and the V-shaped insertion member 20 are mounted in the film mounting groove portion 17 inside the four-groove film mounting member 100 as shown in an example of a schematic cross-sectional view in FIG. To do. At this time, the first film 51 is overlaid on the second film 52, and both the first film 51 and the second film 52 are mounted on the four-groove film mounting member 100, so that the gap between the first film 51 and the second film 52 is reached. The seal can be ensured. As a result, when air is introduced between the first film 51 and the second film 52, the portion where the first film 51 and the second film 52 are overlapped serves as a seal (sealing portion) for preventing air leakage. Will bear.

  Next, in the manufacturing method of this aspect, the cover member 200 is installed so that the cover member 200 covers the film mounting groove 17 as shown in an example of a schematic cross-sectional view in FIG. Between the first seal part 111 of the four-groove film mounting member 100 and the first seal pressing part 211 of the cover member 200, a film seal part 250 is used to prevent air leakage between the first film 51 and the second film 52. Sealing can be performed. Similarly, the film seal portion 250 is also formed between the second seal portion 112 and the second seal pressing portion 212.

  The four-groove film mounting member 100 and the cover member 200 can be fixed using the bolt 41 and two nuts (nut A42 and nut B43). In order to efficiently perform the fixing, the four-groove film mounting member 100 preferably has a key groove 145 as shown in FIG. 17 which is a schematic top view of the vicinity of the portion A in FIGS. 16 and 16. . The key groove 145 may be a continuous groove that continuously traverses the plurality of bolt holes 140. Moreover, it is preferable that the bolt 41 has the key 45 corresponding to the key groove 145, as shown in FIG. 18 as a front schematic diagram (a), a side schematic diagram (b), and a top schematic diagram (c). FIG. 13 shows a state in which the bolt 41 as shown in FIG. 18 is inserted into the bolt hole 140 and the key 45 of the bolt 41 is fitted in the key groove 145. In this case, the cover member 200 has an opening portion through which the bolt 41 having the key 45 can pass, but the nut B43 cannot pass through.

  When the bolt 41 as shown in FIG. 18 is used, the four-groove film mounting member is mounted from the lower side of the film fastener 1 as shown in FIG. 14 without mounting the nut B43 on the cover member 200 side to the bolt 41. The nut A42 on the 100 side can be attached to the bolt 41. Thereafter, the nut B43 on the cover member 200 side can be mounted from the upper side of the film fastener 1 and tightened to fix the four-groove film mounting member 100 and the cover member 200.

  When the bolt 41 does not have the key 45, the bolt 41 with the nut B43 attached is inserted into the bolt hole 140, and the nut A42 on the four-groove film attachment member 100 side from the lower side of the film fastener 1 is inserted. However, when the nut A42 is mounted, the bolt 41 is idle, which is inconvenient. Since the film 50 is mounted on both sides of the film fastener 1, it is difficult to fix the bolt 41 because the hand cannot be turned to the upper side of the film fastener 1. Therefore, in order to fix the four-groove film mounting member 100 and the cover member 200, it is preferable to use the four-groove film mounting member 100 having the key groove 145 and the bolt 41 having the key 45.

  In the case of the film fastener 1 of the present invention shown in FIG. 15, the installation interval of the bolt holes 140 can be, for example, a maximum of 3 m, preferably a maximum of 2 m, and more preferably a maximum of 1 m. Moreover, although the length of the film fastener 1 changes with uses, when using for the film roof structure 300 etc. of a building, for example, from the point of construction property, it is 0.5-10m, Preferably it is 1-8m, More preferably, it can be set to 2 to 6 m, specifically about 4 m.

  In this way, a film structure as shown in FIG. 15 can be obtained, and a building having the film structure can be obtained.

  In the film fastener 1 including the four-groove film mounting member 100 shown in FIG. 9 and the cover member 200 shown in FIG. 10, it is not always necessary to use all four film mounting portions. That is, as shown in FIG. 21, out of the two film mounting portions on the left half and the right half, the first film 51 and the first film 51 using the film mounting portions on either the left half and the right half respectively. The two films 52 can be fixed. In this case, the first film 51 and the second film 52 are overlapped, and the first film 51 and the second film 52 are fixed by inserting one V-shaped insertion member 20 into the film mounting groove 17 from above. be able to. In the case of this fixing method, since two films can be fixed by one V-shaped insertion member 20, the cost is reduced.

  Further, in the film fastener 1 including the four-groove film mounting member 100 shown in FIG. 9 and the cover member 200 shown in FIG. 10, it is not always necessary to use a double film like the first film 51 and the second film 52. . That is, as shown in FIG. 22, one film 50 is fixed using one of the left half and the right half of the two film attachment portions on the left half and the right half. can do. That is, even when the single film 50 is fixed, the film fastener 1 including the four-groove film mounting member 100 and the cover member 200 can be used. When the four-groove film mounting member 100 and the cover member 200 are mass-produced as general-purpose products, these members can be manufactured at low cost, so that a single film fixing film is used to fix the single film 50. Cost is lower than designing and manufacturing the fastener 1 separately. Similarly, only one of the left and right sides of the four-groove film mounting member 100 can be used for fixing the film 50.

  The film structure of the present invention can be made a part of a building by being attached to a structure frame such as a pillar or beam of a structure such as a building. The film structure using the film fastener 1 of the present invention shown in FIG. 15 is used as a film roof structure 300 for a building as shown in FIG. 19 (top schematic diagram) and FIG. 20 (front schematic diagram). Can do. In FIG.19 and FIG.20, the example which uses the film fastener 1 which comprises the film structure of this invention as a rafter of a building is shown.

  Since the film fastener 1 of the present invention can be a film fastener 1 having an arbitrary length if a connecting member such as a joint is used, a large-scale building such as an indoor baseball field, an indoor soccer field, It can be used as a rafter for a film roof structure 300 such as an indoor tennis court. For example, as shown in FIG. 15, when the size of the single film or the double film (the first film 51 and the second film 52) is width X = 2m and length Y = 25m, The end of the length direction of a single or double film can be fixed using the connected film fastener 1 of total length 25m. In addition, air can be introduce | transduced into the inside of a double film, and a bulge can be given to a double film.

  When the film fastener 1 of the present invention shown in FIG. 15 is used as a rafter, supports that support the rafter can be arranged at intervals of a maximum of 3 m, preferably at a maximum of 2 m, and more preferably at a maximum of 1 m. The size of the film fastener 1 shown in FIG. 15 in this case is, for example, that the material of the four-groove film mounting member 100 is aluminum, and the dimension of the width Wd of the main part of the film fastener 1 film fastener 1 is 50 to By setting the thickness to about 70 mm, specifically about 60 mm, the film roof structure 300 shown in FIGS. 19 and 20 can have sufficient structural strength as a building.

  The film fastener 1 of this invention can be used when constructing the light-shielding building which is disclosed by patent document 5 (Unexamined-Japanese-Patent No. 2008-0545547) and can be used suitably for a greenhouse house etc. FIG. FIG. 25 shows a schematic cross-sectional view when the film fastener 1 of the present invention is used for the construction of the light-shielding building 400 disclosed in Patent Document 5. The light-shielding building 400 becomes a light-shielding filter by introducing the light-shielding gas 402 between the double films (the first film 51 and the second film 52), and can block the incident light 460. That is, the light intensity of the transmitted light 461 into the light-shielding building 400 can be adjusted. In this shading building 400, the double film (first film 51 and second film 52) can be fixed using the film fastener 1 of the present invention as shown in FIG. 15 or FIG. If the film fastener 1 of the present invention is used, the double film (the first film 51 and the second film 52) can be easily fixed, so that the light-shielding building 400 disclosed in Patent Document 5 is used. Can be suitably performed.

  Next, a method for forming a light shielding filter by introducing the light shielding gas 402 between the double films (the first film 51 and the second film 52) will be described. FIG. 25 is a diagram schematically showing a pipe for forming a light shielding filter and an attached device together with the light shielding building 400.

  The light-shielding gas generator 410 includes a mechanism for generating light-shielding particles having a predetermined particle diameter and optical constants (such as a light absorption coefficient α and a reflectance R). For example, the light-shielding gas generator 410 has a mechanism for generating light-shielding particles in the light-shielding particle generator 11 by a method of superheating the smoke generating liquid as disclosed in JP-A-8-299613. Prepare. As the smoke generating liquid in this case, for example, a liquid in which propylene glycol, tripropylene glycol, 1,3-butylene glycol and distilled water are mixed can be used. The particle size of the light-shielding particles can be in the range of about 0.01 to 100 μm, but is preferably about 0.05 to 10 μm for the light-shielding particles to be stably suspended in the carrier gas.

  The light shielding gas generator 410 is connected to a gas inlet of a light shielding filter (a space between double films) by a gas introduction tube 406. A pressure blower (not shown) and a gas introduction valve 408 can be disposed in the gas introduction pipe 406. With the pressure blower, the light shielding gas can be brought to a pressure higher than atmospheric pressure and sent from the gas inlet of the light shielding filter to the space of the light shielding filter. A gas exhaust pipe 407 is connected to the gas outlet port of the light shielding filter. Although the gas exhaust pipe 407 is connected to the abatement apparatus 415, the gas exhaust pipe 407 can be configured to be connected to a circulation pipe by a switching valve (not shown). The circulation pipe is connected to the light shielding gas generator 410, and the light shielding gas can be reused. The abatement device 415 is a device for abatement before exhausting to the atmosphere when the light shielding gas contains a toxic substance. Specifically, an apparatus using a scrubber, an apparatus that adsorbs light-shielding particles by an adsorption cylinder, and the like can be used. Note that the abatement device 415 is not necessary when the light shielding gas contains no toxic substances. Instead of the switching valve, the light shielding filter may be provided with a circulation pipe and a gas outlet to the abatement device, and the piping system can be designed in various forms depending on its specific application.

  The film fastener 1 of the present invention in which a double film (the first film 51 and the second film 52) is fixed is attached to the building skeleton 431 and the building side wall 432, and the double film is used to shield a greenhouse or the like. The roof of the building 400 is formed. The amount of incident light 50 can be attenuated by the light shielding gas 402 of the light shielding filter (the space between the double films). As a result, when the light-shielding building 400 is a greenhouse, the transmitted light 461 that is optimal for the growth of the plant 435 can be obtained. Further, this light shielding can suppress an unnecessary increase in the house temperature due to the transmitted light.

  The film structure in which the film is fixed using the film fastener 1 of the present invention can be used for small-scale applications such as a window for light removal in addition to the above-described example. Moreover, the film fastener 1 of the present invention can be used for any material as long as it is an application for fixing a sheet-like film.

DESCRIPTION OF SYMBOLS 1 Film fastener 10 Film mounting member 11 1st wall surface 12 Narrow width part 13 Step part 14 Wide width part 15 2nd wall surface 17 Film mounting groove part 18 Film insertion opening part 20 V-shaped insertion member 21 Strip | belt-shaped flat plate part 22 Vertex part 23 Flat plate End 25 Flat plate insertion member 41 Bolt 42 Nut A
43 Nut B
45 key 50 film 51 first film 52 second film 53 film edge portion 100 four-groove film mounting member 101 first film mounting portion 102 second film mounting portion 103 third film mounting portion 104 fourth film mounting portion 111 first seal Part 112 Second seal part 140 Bolt hole 145 Key groove 200 Cover member 201 Stabilizing part 211 First seal pressing part 212 Second seal pressing part 250 Film seal part 300 Film roof structure 400 Light shielding building 402 Light shielding gas 406 Gas Introduction pipe 407 Gas discharge pipe 408 Gas introduction valve 409 Gas discharge valve 410 Light-shielding gas generator 415 Detoxifier 431 Building skeleton 432 Building side wall 435 Plant 460 Incident light 461 Transmitted light

Claims (9)

A film fastener for fixing a film end including a film mounting member and an insertion member, each of which has substantially the same cross section,
Film mounting member
A film mounting groove for inserting the film and the insertion member and mounting the film;
A first wall surface at least partially facing the film mounting groove,
At least a portion facing the film mounting groove, including a second wall facing the first wall across the film mounting groove,
First wall has a stepped difference portion width may turn and in step manner broadly to the widest from the narrowest width between the first wall and the second wall face toward the insertion direction of the film and the insertion member,
The insertion member has a cross-sectional dimension larger than the narrowest width of the stepped portion;
The insertion member is a V-shaped insertion member;
The V-shaped insertion member has a shape in which one of the long sides of each of the two strip-shaped flat plate portions is joined so that the cross section is substantially V-shaped to form a vertex portion, and the angle formed by the two strip-shaped flat plate portions θ can be changed elastically,
When passing the V-shaped insertion member through the narrowest width portion of the stepped portion while the ends of the two belt-like flat plate portions of the V-shaped insertion member are in contact with the first wall surface and the second wall surface, the angle θ = θ ₁ has a width and an angle θ = θ ₀ of each of the two belt-like flat plate portions so that 1 satisfies a smaller angle θ = θ ₀ when no external force is applied to the two belt-like flat plate portions,
At least a portion of the second wall surface of the film mounting member is a flat surface;
The film fastener further includes a cover member that can be installed to cover the film mounting groove,
At least part of the portion where the film mounting member and the cover member are in contact has a film seal portion for sandwiching the mounted film,
A film mounting member having N sets (N is an integer) of film mounting grooves, a first wall surface, and a second wall surface;
Including 1 or more and N or less V-shaped insertion members,
A film fastener in which N is 4, and each has two film mounting grooves on both sides of the film mounting member. Of the widths of the two belt-like flat plate portions of the V-shaped insertion member, the smaller width L and the angle θ = θ ₀ when no external force is applied to the two belt-like flat plate portions are expressed by the equation Wmin <L · sin θ ₀ (Wmin Is the narrowest width of the step part)
The film fastener of Claim 1 which satisfy | fills. Of the widths of the two belt-like flat plate portions of the V-shaped insertion member, the smaller width L and the angle θ = θ ₀ when no external force is applied to the two belt-like flat plate portions are expressed by the equation Wmax ≦ L · sin θ ₀ (Wmax Is the widest width of the stepped part)
The film fastener of Claim 1 or 2 which satisfy | fills. The width | variety of two strip | belt-shaped flat plate parts of a V-shaped insertion member is the same, and angle (theta) = theta ₀ when external force is not applied to two strip | belt-shaped flat plate parts is 10-80 degree | times. The film fastener of any one of Claims 1.   The wall on the opposite side of the first wall surface of the wall on which the first wall surface of one of the two film mounting groove portions is formed, the other film mounting groove portion of the two film mounting groove portions has a second wall surface, The film fastener of any one of Claims 1-4.   The film structure by which a film is fixed using the film fastener of any one of Claims 1-5.   The building which has a film roof structure using the film fastener of any one of Claims 1-5. It is a manufacturing method of the film structure using the film fastener of any one of Claims 1-5,
Inserting the film edge into the film mounting groove so that the film edge is positioned outside the film mounting groove and the distance from the film edge on the film is closer to the first wall than to the second wall ( a) and
Inserting the insertion member into the film mounting groove and placing the insertion member in the film mounting groove (b);
By pulling the film on the second wall surface toward the outer side of the film mounting groove, one end of the insertion member is adjacent to the widest portion of the stepped portion, and the other end of the insertion member is in contact with the second wall surface. And a step (c) of disposing an insertion member at such a position. The insertion member is a V-shaped insertion member;
In step (b), the apex of the V-shaped insertion member is inserted at the top, the V-shaped insertion member is inserted into the film mounting groove, and the two strip-shaped flat portions are in contact with the first wall surface and the second wall surface through the film. While passing the V-shaped insertion member through the narrowest width portion of the stepped portion and disposing the V-shaped insertion member in the film mounting groove portion,
In step (c), one end of the insertion member is one end of the two belt-like flat plate portions of the V-shaped insertion member, and the other end of the insertion member is the entire other outer surface of the belt-like flat plate portion. The manufacturing method of the film structure of Claim 8 which exists.

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