JP2006009255A - Synthetic resin folded plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin folded plate for preventing the leakage of rainwater by eliminating gaps between overlapping portions even when valley portions of the folded plate are wider. <P>SOLUTION: The synthetic resin folded plate P1 comprises flat ridge portions 1, flat valley portions 2 and inclined portions 3 connecting the ridge portions to the valley portions. Bent reinforcing portions 4, 4 bent downward are formed at the ends of the valley portions 2. The bent reinforcing portions 4 prevent the uplift of the valley portions 2 and eliminate gaps between overlapping portions to prevent the leakage of water. In another synthetic resin folded plate, an inner angle formed by the flat valley portion 2 and the inclined portion 3 is an obtuse angle, 1-4° greater than an inner angle formed by the flat ridge portion 1 and the inclined portion 3. The obtuse-angle formation permits the force of fixing the ridge portions 1 to be transmitted through the inclined portions and operated in the direction of pushing the flat valley portions 2 down from the folding points of the valley portions to prevent the flotation of the valley portion 2, resulting in no leakage of water. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a synthetic resin folded plate used for roofing materials and the like.

Roof materials such as synthetic resin folding plates have been widely used for a long time, and corrugated plates made of polyvinyl chloride resin are best known. Recently, corrugated plates made of polycarbonate resin have been widely used. Since the polycarbonate resin has mechanical strength, good weather resistance, and transparency, it is also used as a large roof material having a shape other than corrugated sheets. For example, a polycarbonate resin folded plate in which flat ridges, flat valleys, and inclined portions are continuous is used as a large area lighting material for factories, station buildings, passages, and the like. These folding plates are only provided in a certain size for transportation. When a large-area roof is used as described above, a plurality of folding plates are stacked from the water to the water or in the width direction. It was necessary to connect and work. It is known that when connecting the water and underwater folded plates, it is known that the connecting end portions are simply overlapped with each other (Patent Document 1), but water leaks from the overlapped portion. In order to prevent this, it is also known that a sealing material is interposed and connected to the interface of the overlapping portions (Patent Document 2).
Japanese Unexamined Patent Publication No. 7-3954 Japanese Examined Patent Publication No. 2-57625

  However, since the connection of Patent Document 1 is simply performed by overlapping the folded plates on the water and under the water, there is a possibility that the rainwater flows backward from the gap between the overlapping portions in the case of wind and rain. In particular, when the width of the valley portion becomes wider, the rigidity is lost, and since the wide valley portion is lifted upward and a gap is easily formed, rainwater is blown in more. Further, as in Patent Document 2, even if a sealing material is interposed, if the width of the valley is widened, the gap in the overlapped portion becomes too large, and even if a sealing material is used, the gap cannot be filled. Rainwater will be blown. In particular, when a synthetic resin folding plate is overlapped and connected on a metal folding plate, the metal folding plate is not deformed, so that there is a problem that an extra gap is formed and rainwater blows in.

  In view of such conventional problems, the present invention provides a synthetic resin folded plate that eliminates the gap between the overlapping portions and prevents rainwater from leaking even when the width of the valley is wide. It is a problem to be solved.

  The synthetic resin folded plate according to the present invention is a folded plate composed of a flat crest, a flat trough, and an inclined portion connecting the crest and trough, and at least one end of the trough A bending reinforcement portion bent downward is formed on the portion.

  Another synthetic resin folded plate of the present invention is a folded plate comprising a flat crest, a flat trough, and an inclined portion connecting these crest and trough, and the flat trough And at least one inner angle formed by the inclined portion is an obtuse angle that is 1 to 4 ° larger than the inner angle formed by the flat peak portion and the inclined portion.

  And in this invention, it is preferable that the width | variety of the flat trough part of a synthetic resin folding plate is 75-400 mm, and the angle which a flat trough part and a bending reinforcement part make is 150-175 degrees. Is preferred.

  The synthetic resin folded plate of the present invention is improved in rigidity by the bent reinforcing portion formed at one end of the flat trough, the deformation in the width direction of the flat trough is suppressed, and the lifting can be prevented. For this reason, even if this synthetic resin folding plate is connected to each other or a metal folding plate in an overlapping manner, the overlapped end portions are in close contact with each other or overlapped with little gap between them. By interposing the material, the gap can be completely eliminated and watertight, and water leakage can be eliminated. In particular, even when the width of the flat valley is 75 to 400 mm, the above-described action of the bending reinforcing portion works effectively, and the overlapping portion can be made watertight. When the angle between the flat trough and the bending reinforcement is 150 to 175 °, the force when fixing the crest of the overlapped synthetic resin folded plate with a screw extends to the trough. When the reinforcing portion hits the lower folded plate, the bent reinforcing portion is easily extended and becomes horizontal, and the sealing effect of the sealing material is improved.

  Further, in the other synthetic resin folding plate of the present invention, at least one inner angle formed by the valley portion and the inclined portion is an obtuse angle that is 1 to 4 ° larger than the inner angle formed by the peak portion and the inclined portion. When this ridge is fixed with a screw or the like, the force is transmitted through the inclined portion to reach the bending point to the valley, and further acts to push the flat valley downward, thereby preventing the valley from floating. can do. Even if the width of the flat valley portion is 75 to 400 mm, this action can effectively act on the valley portion to prevent lifting, and the overlapping portions are in close contact with each other or overlapped with little gap. Can prevent water leakage.

  An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a synthetic resin folding plate of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a partial plan view showing an enlarged end of a valley portion of the folding plate, 4 is an enlarged cross-sectional view taken along line BB in FIG. 3, and FIG. 5 is a cross-sectional view showing a state in which the synthetic resin folded plate and the metal folded plate are connected.

  The synthetic resin folded plate P1 of the present invention, as shown in FIG. 1 and FIG. 2, has flat ridges 1 and flat valleys 2 that are alternately continuous via inclined portions 3. A bent reinforcing portion 4 that is bent downward is formed at the water upper end portion 21 and the water lower end portion 22 of the valley portion 2.

  The synthetic resin used for the synthetic resin folded plate P1 may be any thermoplastic resin, and among them, a polycarbonate resin and a polyester resin having good mechanical strength and transparency are particularly preferable. Further, if a weathering layer such as a polycarbonate resin or a polyester resin containing an acrylic resin or an ultraviolet absorber is formed on the outer surface of the synthetic resin folding plate P1, a folding plate with further weather resistance can be obtained. And is particularly preferred as a roofing material.

  The synthetic resin folded plate P1 is formed by bending a synthetic resin plate having a thickness of about 1 to 4 mm, four flat peaks 1, three flat valleys 2, and an inclination connecting them. Part 3 is formed. And the width L1 of the peak 1 is 20 to 80 mm, the width L2 of the valley 2 is 75 to 400 mm, the height H1 of the peak 1 is 20 to 175 mm, and the width L2 of the valley 2 is the width of the peak 1. The folded plate P1 is 2 to 10 times larger than L1. If the width L2 of the valley portion 2 is smaller than 75 mm, the flat portion itself of the valley portion 2 has rigidity and does not bend, so there is no need to provide the bending reinforcement portion 4. Even if the portion 4 is provided, the required rigidity cannot be obtained and the floating occurs.

  The inner angle α formed by the flat peak portion 1 and the inclined portion 3 is 110 to 130 °, and the inner angle β formed by the flat valley portion 2 and the inclined portion is also 110 to 130 °. If the inner angles α and β are larger than 130 °, the rigidity of the entire folding plate P1 becomes small, which is not desirable. On the other hand, when the inner angles α and β are smaller than 110 °, it is not preferable because it is difficult to form the folded plate P1.

  These inner angles α and β may be the same angle, but may be different inner angles. When different inner angles are used, the inner angle α is preferably 118 to 122 °, the inner angle β is 119 to 126 °, and the inner angle β is preferably an obtuse angle that is 1 to 4 ° larger than the inner angle α. When the peak portion 1 of the synthetic resin folding plate P1 having such inner angles α and β is fixed to the tight frame T or the like, the force for pressing the folding plate P1 downward is transmitted through the inclined portion 3 to the inclined portion 3 and the valley. It reaches the bending point with the part 2 and is then transmitted to the valley part 2, but since the inner angle β is an obtuse angle that is 1 to 4 ° larger than the inner angle α, the force moves down the flat part of the valley part 2 from the bending point. The flat portion of the valley portion 2 does not float up. Therefore, it is possible to effectively prevent the valley portion 2 from being lifted up in synergy with the bending reinforcement portion 4 and to prevent water leakage.

  And the bending reinforcement parts 4 and 4 provided in the water upper end part 21 and the water lower end part 22 of the trough part 2 of the synthetic resin folded plate P1 by bending downward substantially over the entire width are as shown in FIG. The end portion 22 (21) of the valley portion 2 is formed with a length L3 of 5 to 30 mm and bent downward at an angle γ of 150 to 175 ° (an angle formed by the flat valley portion 2 and the bending reinforcement portion 4). It has been done. Therefore, the downward bending height H2 is 2 to 17 mm. As described above, when the bending reinforcing portions 4 and 4 are provided at the end portions 21 and 22, the rigidity of the flat portions of the end portions 21 and 22 of the valley portion 2 is improved, and the flat end portion is deformed in the vertical direction, particularly upward. Deformation is suppressed to be substantially horizontal, and it does not float when overlapped. If the angle γ is smaller than 150 °, the rigidity is improved. However, the gap between the overlapping portions is excessively opened, which causes water leakage.

  Such a synthetic resin folding plate P1 is formed by bending a synthetic resin plate into a size of 1000 to 10000 mm in length and 300 to 900 mm in width using a bending machine, or extruded using a profile extrusion mold. It can shape | mold and it can obtain easily by bending the flat part of the edge parts 21 and 22 of the trough part 2 below.

  The synthetic resin folding plate P1 and the metal folding plate M are connected in the water-up / down-water direction as shown in FIG. That is, after a metal folding plate M having the same shape is placed and fixed on the tight frame T, a sealing material S is applied over the entire width of the water upper end of the folding plate M, and a synthetic resin folding plate is formed thereon. The bottom end portion 22 of the plate P1 is overlapped and connected with an overlapping dimension of about 200 mm, and the peak portion 1 is fixed. At that time, since the metal folded plate M has rigidity, it is substantially horizontal even at the end portion of the valley portion, and the bent portion 4 of the synthetic resin folded plate P1 provided at the end portion 22 of the valley portion 2 is also provided. For this reason, these end portions are overlapped so as to crush the sealing material S, and the synthetic resin folded plate P1 is located below when the peak portion 1 is fixed to the tight frame T. When pressed, the trough 2 is also pressed against the trough of the metal folding plate M, and the bent reinforcing portion 4 approaches a horizontal state to eliminate the gap, so that the effect of the sealing material S is further exhibited. The The water upper end portion 21 of the synthetic resin folded plate P1 is connected to the water lower end portion of the metal folded plate M so as to be overlapped thereon. Since the bent reinforcing portion 4 is formed at the water upper end portion 2 of FIG. 2, it becomes substantially horizontal and overlaps with the valley portion of the metal folding plate M so that the effect of the sealing material S is exhibited.

  In the synthetic resin folded plate P1, the bending reinforcing portion 4 is provided at both the water-side and water-side end portions 21 and 22 of the valley portion 2, but may be provided only at the water-side end portion 22. .

  FIG. 6 is a perspective view of a synthetic resin folded plate P2 showing another embodiment of the present invention.

  The synthetic resin folded plate P2 is different from the synthetic resin folded plate P1 in that crest portions 1 are formed on both sides of the trough portion 2 and the crest portion 2 is composed of two crest portions 1 and one trough portion 2. However, since the other structure is the same, it attaches | subjects the same code | symbol and abbreviate | omits description. This synthetic resin folded plate P2 also has the end portions 21 and 22 of the valley portion 2 substantially horizontal by the bending reinforcement portions 4 and 4 provided in the flat portions of the water upper and lower end portions 21 and 22 of the valley portion 2, and Similarly, it can be connected to the metal folding plate M and watertightly connected with a sealing material.

  7 is a cross-sectional view of a synthetic resin folded plate P3 showing another embodiment of the present invention, FIG. 8 is an enlarged view of a portion surrounded by a circle C in FIG. 7, and FIG. 9 is a portion surrounded by a circle D in FIG. FIG. 10 is a sectional view showing a state in which the synthetic resin folded plate P3 and the metal folded plate M are connected.

  This synthetic resin folded plate P3 is composed of flat crests 1 and flat troughs 2 alternately arranged via inclined portions 3, and has four crests 1 and 3 troughs. 2 is formed. Of these four ridges 1, the two ridges 11, 11 at the left and right ends are overlapped with other synthetic resin folding plates or metal folding plates that are left and right. The two peaks 12 and 12 at the center are for increasing the rigidity of the synthetic resin folded plate P3.

  The synthetic resin folding plate P3 has an inner angle δ formed between the flat portion 12 at the center and the inclined portion 3 that is not connected to the left and right other folded plates, and is 118 to 122 °, and is flat with the same inclined portion 3. The inner angle θ formed by the valley 2 is 119 to 126 °, and the inner angle θ is an obtuse angle that is 1 to 4 ° larger than the inner angle δ. On the other hand, the inner angle α formed by the ridges 11 and the inclined portions 3 at both the left and right ends and the inner angle β formed by the flat valley portions 2 and the inclined portions 3 are 110 to 130 °, preferably 122 to 128 °. As the same angle in range.

  In this way, when the peak portion 12 of the synthetic resin folded plate P3 formed so that the inner angle θ formed by the central peak portion 12 is an obtuse angle that is 1 to 4 ° larger than the inner angle δ is fixed to a tight frame or the like, The force that presses down the peak portion 12 travels along the inclined portion 3 to reach the bending point between the inclined portion 3 and the valley portion 2, and the force of the valley portion 2 as a force in the direction of pushing down the flat portion of the valley portion 2 from the bending point. It is transmitted to the flat part. Therefore, as shown in FIG. 10, even when the sheet is overlapped with the metal folding plate M on the lower side, the flat portion of the valley portion 2 does not float, and water leakage from the overlapping portion can be prevented.

  The ridges 11 at both the left and right ends are overlapped with and connected to the ridges of the other left and right folded plates, so that the ridges 11 have the same shape as the other folded plates left and right. Furthermore, since the ridge 11 at the left end is superimposed on the ridge of another folded plate that has been rolled to the left, as shown in FIG. 9, the inclined portion 3 at the left end of the ridge 11 is The space K is formed so as to be bent and overlapped, and the rain water blown in the wind and rain can be blocked by the space K.

  Since the other configuration of the synthetic resin folded plate P3 is the same as that of the synthetic resin folded plate P1, the same reference numerals are given to the same portions in FIGS.

  In the synthetic resin folded plate P3, the inner angle β and the inner angle α formed by the left and right peaks 11 are the same inner angle, but the inner angle β is an obtuse angle that is 1 to 4 ° larger than the inner angle α. A synthetic resin folded plate formed as described above may be used. Further, all the internal angles θ of the synthetic resin folded plate P3 are obtuse angles that are 1 to 4 ° larger than the internal angle δ, but at least one internal angle θ is an obtuse angle that is 1 to 4 ° larger than the internal angle δ. It may be formed as follows.

  The synthetic resin folded plate of the present invention is not limited to the shape of each of the above embodiments, but may be other shapes as long as the valley is flat. Further, in addition to the connection between the synthetic resin folding plate and the metal folding plate, the connection can be made in the same manner even when the synthetic resin folding plates are connected to each other.

It is a perspective view which shows the synthetic resin folding plate of this invention. It is sectional drawing of the AA line of FIG. It is a fragmentary top view which expands and shows the edge part of the trough part of the same folding version. It is an expanded sectional view of the BB line of FIG. It is sectional drawing which shows the state which connected the same folding plate and metal folding plates. It is a perspective view which shows the other synthetic resin folding plate of this invention. It is sectional drawing which shows the further synthetic resin folding plate of this invention. FIG. 8 is an enlarged view of a portion surrounded by a circle C in FIG. 7. FIG. 8 is an enlarged view of a portion surrounded by a circle D in FIG. 7. It is sectional drawing which shows the state which connected the same folding plate and metal folding plates.

Explanation of symbols

1,11,12 Mountain part 2 Valley part 21,22 End part of valley part 3 Inclined part 4 Flexural reinforcement part L2 Width of valley part α Inner angle formed by mountain part and inclined part β Valley part and inclined part make Inner angle γ Angle formed by flat valley and bending reinforcement δ Inner angle formed by peak and inclined portion θ Inner angle formed by valley and inclined portion P1, P2, P3 Synthetic resin folding plate M Metal Folded version

Claims (4)

  A folded plate comprising a flat crest, a flat trough, and an inclined portion connecting these crests and trough, and a bending reinforcement portion bent downward at at least one end of the trough A synthetic resin folded plate characterized by being formed.   A folding plate comprising a flat crest, a flat trough, and an inclined portion connecting these crest and trough, and at least one inner angle formed by the flat trough and the inclined portion is flat A synthetic resin folded plate characterized in that the obtuse angle is 1 to 4 ° larger than the inner angle formed by the ridge and the inclined portion.   2. The synthetic resin folded plate according to claim 1, wherein an angle formed by the flat valley portion and the bending reinforcement portion is 150 to 175 °.   The synthetic resin folded plate according to any one of claims 1 to 3, wherein the flat valley has a width of 75 to 400 mm.

Images