Sheet fastening material and sheet fixing device

Abstract

To provide a sheet stopper that enables a hard sheet to be fixed to a frame material that does not have a structure for fixing the hard sheet and can apply a strong tension to the fixed sheet.SOLUTION: A means for solving the problem is attached to a frame material F having a bottom portion 10 and a pair of side wall portions 11 and 12 that stand up from both ends of the bottom portion 10 and face each other to fix a sheet S; a sheet holding portion 2 that can hold the sheet S; and a clamping portion 3 for sandwiching the tip of one side wall portion 11 of the frame material F; and a fitting portion 4 fitted to the tip of the other side wall portion 12 of the frame material F.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] This invention relates to a sheet fastening material. and sheet fixing device Regarding. [Background technology]

[0002] One example of a sheet fastening material is used to fasten a sheet to the framework of a vinyl greenhouse. For example, such a vinyl greenhouse has a framework consisting of arch pipes arranged in a line in the depth direction and multiple frame members that are spanned between the arch pipes and have grooves whose opening width is narrower than the width of the bottom. Then, by inserting a sheet and an elastic member into the grooves of the frame members, the sheet is fixed to the framework by the elastic force of the elastic member.

[0003] In this case, an inexpensive and flexible soft sheet is used as the sheet fixed to the framework. However, in recent years, there has been a demand to replace the soft sheet with a hard sheet that has a long life even if it is expensive.

[0004] However, since a hard sheet is less flexible and less deformable than a soft sheet, the elastic force of the elastic member may not be enough to secure the hard sheet to the frame material.

[0005] Here, when fixing a hard sheet to a framework, it is common to provide a sheet support section on the frame material on which the sheet can be placed, and with the hard sheet placed on the sheet support section, cover it with a pressure member and screw in screws from above the pressure member to fix the hard sheet (see, for example, Patent Document 1).

[0006] Therefore, in order to replace the soft seat with a hard seat, it is necessary to replace the frame material with the frame material of Patent Document 1. If the frame material of Patent Document 1 is used, the hard seat can be firmly fixed to the frame material, but replacing the frame material just to replace the seat would be very costly.

[0007] Therefore, in the past, a hard sheet was placed over the open end of the frame material, and a cap-shaped sheet fastening material was attached to the open end of the frame material to close the opening of the frame material, and the hard sheet was sandwiched between the frame material and the sheet fastening material, thereby fixing the hard sheet to a frame material that does not have a structure for fixing the hard sheet without replacing the frame material (see Patent Document 2). [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2016-007183 A [Patent Document 2] JP 2019-62820 A Summary of the Invention [Problem to be solved by the invention]

[0009] However, since the sheet fastening material of Patent Document 2 sandwiches and fastens the hard sheet together with the frame material, the tension applied to the hard sheet is smaller than when the hard sheet is fastened by screws as in the frame material of Patent Document 1. Therefore, there is a risk that the sheet will flap when blown by the wind.

[0010] Therefore, the present invention provides a sheet fastening material that allows a hard sheet to be fixed to a frame material that does not have a structure for fixing the hard sheet, and that can apply strong tension to the fixed sheet. and a sheet fixing device equipped with the sheet fixing member. The purpose is to provide. [Means for solving the problem]

[0011] In order to achieve the above object, the sheet fastening material of the present invention is a sheet fastening material that is attached to a frame material having a bottom and a pair of side walls that stand up from both ends of the bottom and face each other to fix a sheet, and is characterized by comprising a sheet holding part capable of holding the sheet, a clamping part that clamps the tip of one of the side walls of the frame material, and a fitting part that fits into the tip of the other side wall of the frame material. With this configuration, the sheet fastening material that has a sheet holding part that is suitable for attaching a hard sheet can be attached to the frame material. 。

[0012] The sheet fastening material of the present invention may also have a slip-out prevention piece facing the outside of the other side wall portion. With this configuration, even if a force pulling the sheet fastening material in an upward direction toward the clamping portion acts on the sheet fastening material and a moment acts on the sheet fastening material with the tip of the other side wall portion as a fulcrum, the slip-out prevention piece abuts against the other side wall portion to prevent the sheet fastening material from rotating, thereby preventing the sheet fastening material from falling off the frame material.

[0013] In addition, the sheet fastener of the present invention The material is A first guide groove for guiding the insertion of a screw is provided on the retaining piece. There are This configuration makes it easy to fix the sheet fastening material to the frame material using screws.

[0014] In addition, the sheet fastening member of the present invention has a second guide groove that guides the insertion of a screw whose outer periphery abuts on the inner tip of the other side wall portion. Is This configuration makes it easy to fix the sheet fastening material to the frame material using screws.

[0015] The sheet fastening member of the present invention may have a protrusion protruding from the fitting portion toward the opposite side of the clamping portion. With this configuration, the force required to fit the fitting portion to the other side wall portion is reduced, making it easier to attach the sheet fastening member to the frame material.

[0016] In the sheet fastening member of the present invention, the fitting portion may abut against the inner tip of the other side wall portion. With this configuration, the sheet fastening member can be attached to frame materials of various shapes regardless of the outer shape of the other side wall portion.

[0017] In the sheet fastening material of the present invention, the clamping portion may have an inner piece that abuts against the inside of the one side wall portion and an outer piece that abuts against the outside of the one side wall portion and clamps the tip of the one side wall portion together with the inner piece, and the outer piece may have a flange portion that extends along the one side wall portion. With this configuration, even if condensation water generated on the inner surface of the sheet flows to the outer piece of the clamping portion through the sheet holding portion, the outer piece has a flange portion that extends along the one side wall portion, and the tip of the flange portion does not contact the upper end of the one side wall portion, so that the condensation water can be prevented from entering the frame material through the gap between the clamping portion and the one side wall portion.

[0018] In addition, in the sheet fastening material of the present invention, the sheet holding portion has a main body portion having a U-shaped cross section that is disposed between the pair of side wall portions of the frame material and extends along the extension direction of the frame material, and a receiving piece that protrudes from each end of the main body portion toward the outside of the main body portion, and the clamping portion has a support piece that protrudes from the one side wall portion side of the main body portion and abuts against the inside of the one side wall portion, and the support piece clamps the tip of the one side wall portion together with the receiving piece on the one side wall portion side. do. With this configuration, one of the side walls is clamped between the receiving piece and the support piece provided at the upper end of the sheet holding part, so the upper end position of the sheet holding part can be lowered. Therefore, when the sheet held by the sheet holding part is blown by the wind, the moment acting on the sheet fastening material can be reduced, so that the sheet fastening material is less likely to fall off the frame material.

[0019] In addition, the sheet fixing device of the present invention comprises a frame material having a bottom and a pair of side wall portions that rise from both ends of the bottom and face each other, and a sheet fastening material that is attached to the frame material and fixes a sheet, and the sheet fastening material has a sheet holding portion capable of holding the sheet, a clamping portion that clamps an end of one of the side wall portions of the frame material, and an engaging portion that engages with the end of the other side wall portion of the frame material, and is characterized in that when the end of one of the side wall portions is clamped by the clamping portion and the engaging portion is not engaged with the end of the other side wall portion, the engaging portion can be rotated in a direction approaching the other side wall portion with the end of the one side wall portion as a fulcrum, thereby engaging the engaging portion with the end of the other side wall portion. In addition, the present invention otherThe sheet fixing device comprises a frame material having an upper frame having a bottom and a pair of side walls rising from both ends of the bottom and facing each other, a lower frame arranged diagonally below the upper frame and having a bottom wall and a pair of side walls rising from both ends of the bottom wall and facing each other, and a groove formed between the bottom wall and the pair of side walls, into which a corrugated spring can be inserted, the opening having a width narrower than the width of the bottom wall, and a sheet fixing material attached to the upper frame of the frame material to fix a sheet, the sheet fixing material having a sheet holding portion capable of holding the sheet, a clamping portion for clamping an end of one of the side walls of the upper frame material, a fitting portion for fitting into an end of the other side wall of the upper frame material, and a stopper portion facing the opening of the groove, the distance between the end of the stopper portion and the end of the side wall opposite the upper frame side of the pair of side walls of the lower frame being less than the width of the opening, There are According to this configuration, the spring inserted into the groove of the lower frame can be reliably prevented from falling off the lower frame. Effect of the Invention

[0020] According to the sheet fastening material of the present invention, it is possible to fix a hard sheet to a frame material that does not have a structure for fixing a hard sheet, and it is possible to apply strong tension to the hard sheet, thereby preventing the sheet from flapping. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view of a vinyl greenhouse to which a sheet fastening material according to the present embodiment is attached. [Diagram 2] 1 is a front cross-sectional view showing a state in which a sheet fastening material of a first embodiment is attached to a frame material. FIG. [Diagram 3] This is a diagram explaining the procedure for attaching the sheet fastening material of the first embodiment to a frame material, and is a front cross-sectional view showing the state in which the clamping portion of the sheet fastening material clamps the tip of one side wall portion of the frame material. [Figure 4]FIG. 2 is a front cross-sectional view showing the state in which the sheet fastening material of the first embodiment is used, showing the state in which a screw is screwed into the first guide groove of the sheet fastening material. [Diagram 5] FIG. 11 is a front cross-sectional view showing the state in which the sheet fastening material of the first embodiment is used, showing the state in which a screw is screwed into the second guide groove of the sheet fastening material. [Figure 6] 13 is a front cross-sectional view showing a state in which a sheet fastening material of a second embodiment is attached to a frame material. FIG. [Figure 7] FIG. 11 is a front cross-sectional view showing a state in which a sheet fastening material of a third embodiment is attached to a frame material. [Figure 8] FIG. 10 is a front cross-sectional view showing the use state of the sheet fastening material of the fourth embodiment. [Figure 9] FIG. 9 is a front cross-sectional view showing a state in which the spring, which has come out of the groove of the lower frame of the frame material in FIG. 8, abuts against a stopper portion of the sheet retaining material. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] The present embodiment will now be described with reference to the drawings, in which like reference numerals denote like parts throughout the several views.

[0023] As shown in Fig. 1 to Fig. 5, the sheet fastening material 1 according to the first embodiment of the present invention is attached to a frame material F having a bottom 10 and a pair of side walls 11, 12 that stand up from both ends of the bottom 10 and face each other. The sheet fastening material 1 also includes a sheet holding portion 2 capable of holding a sheet S, a clamping portion 3 that clamps the tip of one side wall portion 11 of the frame material F, and a fitting portion 4 that fits into the tip of the other side wall portion 12 of the frame material F, and has a cross-sectional shape shown in Fig. 2 that continues in the depth direction. The sheet fastening material 1 is used by cutting it to any length as necessary, and in this embodiment, it is used when fixing a hard sheet S to the framework of a vinyl greenhouse H.

[0024] As shown in Fig. 1, the framework of the vinyl greenhouse H in this embodiment includes a plurality of arch pipes P arranged in a line in the depth direction of the vinyl greenhouse H, and a plurality of frame members F that are bridged between the arch pipes P, P facing each other in the depth direction and extend along the depth direction. In this embodiment, each frame member F is provided on each gable side of the vinyl greenhouse H, sandwiching the apex of the arch pipe P therebetween.

[0025] 2, the frame material F comprises an upper frame F1 having a flat bottom 10, a pair of side walls 11, 12 that rise while curving inward from both ends of the bottom 10 and face each other, and a groove F1a whose opening width is narrower than the width of the bottom 10, a lower frame F2 extending from the lower left end of the bottom 10 of the upper frame F1 and disposed diagonally downward to the left of the upper frame F1 in the figure, and having a groove F2a whose opening width is narrower than the width of the bottom wall 15, and a gutter frame F3 with an L-shaped cross section that extends from near the center of the lower part of the bottom 10 of the upper frame F1 toward the right side in the figure. Furthermore, at the tips of the side walls 11, 12 of the upper frame F1, protrusions 13, 14 that have a circular cross section and protrude outward from the upper frame F1 are provided.

[0026] 2, the lower frame F2 includes a bottom wall 15 and a pair of opposing side walls 16, 17 that rise while curving inward from both ends of the bottom wall 15, and forms a groove F2a between the bottom wall 15 and the pair of side walls 16, 17, the opening width of which is narrower than the width of the bottom wall 15. The lower frame F2 is integrated diagonally downward to the left of the upper frame F1 by connecting the upper end of the right side wall 16 on the right side in the figure to the lower left end of the bottom 10 of the upper frame F1 in the figure.

[0027] The upper frame F1 can be used to fix a flexible sheet to the framework of the vinyl greenhouse H. Specifically, a flexible sheet is inserted into the groove F1a of the upper frame F1, and an elastic member made of a corrugated spring is inserted into the groove F1a while being compressed from above the flexible sheet, so that the elastic force of the elastic member can fix the flexible sheet to the frame material F. When a flexible sheet is fixed to the upper frame F1, the gutter frame F3 can store condensation water generated on the inner surface of the sheet S due to the temperature difference between the inside and outside of the vinyl greenhouse H, thereby preventing the condensation water from entering the vinyl greenhouse H. Specifically, the condensation water generated on the inner surface of the sheet S flows down one side wall portion 11 and is collected in the gutter frame F3.

[0028] However, the shape of the frame material F described above is just one example, and as long as it has a bottom 10 and a pair of side wall portions 11, 12 that rise from both ends of the bottom 10 and face each other, it is not limited to the shape of this embodiment, and may, for example, be composed of only an upper frame F1.

[0029] 2, the sheet fastening material 1 of this embodiment is attached to the upper frame F1 of the frame material F. Specifically, as shown in Fig. 2, the sheet fastening material 1 includes a sheet holding portion 2 that is disposed between the side wall portions 11, 12 of the upper frame F1 when attached to the upper frame F1, a clamping portion 3 that is provided on the right side of the sheet holding portion 2 in the figure (the side of one side wall portion 11) and clamps the tip of one side wall portion 11, and a fitting portion 4 that is provided on the left side of the sheet holding portion 2 in the figure (the side of the other side wall portion 12) and fits into the tip of the other side wall portion 12.

[0030] Each part of the sheet fastening material 1 will be described in detail below. As shown in Fig. 2, the sheet retaining part 2 of this embodiment has a main body part 20 with a U-shaped cross section, which has a bottom piece 20a extending along the longitudinal direction of the frame material F and a pair of side pieces 20b, 20c standing vertically from each end of the bottom piece 20a, and receiving pieces 21, 22 protruding from the upper ends of the side pieces 20b, 20c, which are each end of the main body part 20, toward the outside of the main body part 20. In addition, a plurality of grooves (not shown) are formed in parallel along the longitudinal direction on the inner surface of each of the side pieces 20b, 20c.

[0031] As shown in FIG. 2, the clamping portion 3 in this embodiment has an inner piece 3a that protrudes from one side piece 20b, which is on the right side in the figure of the main body portion 20 of the sheet holding portion 2, and abuts against the inside of one of the side wall portions 11, and an outer piece 3b that protrudes from one side piece 20b opposite the inner piece 3a and abuts against the outside of a protrusion 13 provided at the tip of the one of the side wall portions 11, and clamps the tip of the one of the side wall portions 11 together with the inner piece 3a.

[0032] 2, the inner shapes of the inner piece 3a and the outer piece 3b of the clamping portion 3 are set to match the shape of the protrusion 13 provided at the tip of one of the side wall portions 11, so that when the sheet fastening material 1 is attached to the frame material F, the sheet fastening material 1 does not rattle in the vertical direction relative to the frame material F. Note that the structure of the clamping portion 3 in this embodiment is one example, and is not limited to the above configuration as long as it is capable of clamping the tip of one of the side wall portions 11.

[0033] As shown in FIG. 2, the fitting portion 4 in this embodiment has a flat plate portion 4a extending from the other side piece 20c, which is on the left side of the main body 20 of the sheet holding portion 2 in the figure, toward the other side wall portion 12 while inclining upward in FIG. 2, and a contact portion 4b extending from the tip of the plate portion 4a toward the upper frame F1, which is facing downward in FIG. 2, and abutting against the inner tip of the other side wall portion 12 when fitted.

[0034] In addition, as shown in Figure 2, the tip of the plate portion 4a of the fitting portion 4 is provided with a protrusion portion 5 extending toward the anti-clamping portion side so as to extend the plate portion 4a, and a slip-out prevention piece 6 extending downward in Figure 2 from the tip side of the protrusion portion 5 so as to face the outside of the other side wall portion 12 and abut against the outside of the other side wall portion 12.

[0035] Thus, in this embodiment, the stopper piece 6 faces the outside of the other side wall portion 12, so that when the sheet fastening material 1 is attached to the frame material F, even if a force acts on the clamping portion 3 side to pull the sheet fastening material 1 in the upward direction in Fig. 2 and a moment acts on the sheet fastening material 1 to rotate it clockwise in Fig. 2 with the protruding portion 14 as a fulcrum, the stopper piece 6 abuts against the other side wall portion 12 and prevents the sheet fastening material 1 from rotating. Therefore, even if the moment acts on the sheet fastening material 1, the sheet fastening material 1 can be prevented from falling off the frame material F.

[0036] Next, a detailed description will be given of the procedure for attaching the sheet fastening material 1 of this embodiment to the upper frame F1 of the frame material F. First, as shown in Fig. 3, the sheet fastening material 1 is tilted so that the clamping portion 3 faces downward, and the protruding portion 13 at the tip of one of the side walls 11 is inserted between the inner piece 3a and the outer piece 3b, so that the tip of one of the side walls 11 is clamped by the clamping portion 3.

[0037] From this state, the protrusion 5 is pressed toward the upper frame F1, and the abutting portion 4b is pressed in while abutting against the inside of the tip of the other side wall portion 12. Since the sheet fastening material 1 is elastic, when the abutting portion 4b bends and enters the inside of the other side wall portion 12, the restoring force of the abutting portion 4b presses against the other side wall portion 12. Thus, the sheet fastening material 1 is attached to the frame material F so as not to come off the upper frame F1.

[0038] Here, the protrusion 5 protrudes from the fitting portion 4 toward the side opposite the clamping portion. Therefore, when the contact portion 4b is pressed against the inside of the tip of the other side wall portion 12, by pressing the protrusion 5, the distance to the clamping portion 3, which serves as the fulcrum, becomes larger than when the fitting portion 4 is pressed, and therefore a smaller force is required to press the contact portion 4b.

[0039] 2 and 3, the tip of the abutment portion 4b is bent inward (toward the sheet holding portion 2). Therefore, when the abutment portion 4b is pushed inward toward the tip of the other side wall portion 12, the insertion of the abutment portion 4b is guided by the outside of the tip of the abutment portion 4b. Therefore, when attaching the sheet fastening material 1 of this embodiment to the upper frame F1 of the frame material F, the worker can easily push the abutment portion 4b into the inside of the other side wall portion 12.

[0040] 4, a screw V1 is screwed from the outside into the retaining piece 6 facing the other side wall portion 12, and the screw V1 penetrates the retaining piece 6 and the other side wall portion 12. Then, the sheet fastening material 1 is connected to the frame material F by the screw V1, which prevents the sheet fastening material 1 from rattling relative to the frame material F and prevents the frame material F from shifting in the depth direction, and reliably prevents the sheet fastening material 1 from falling off the frame material F.

[0041] Here, since a first guide groove 7 for guiding the insertion of the screw V1 is provided on the outer side of the retaining piece 6 as shown in FIG.

[0042] In addition, instead of the retaining piece 6, as shown in FIG. 5, a screw V2 may be screwed into the plate portion 4a of the fitting portion 4. Specifically, when the screw V2 is screwed into the plate portion 4a, the screw V2 penetrates the abutment portion 4b, and the thread of the screw V2 comes into contact with the protruding portion 14 at the tip of the other side wall portion 12 while being engaged therewith. Since the thread of the screw V2 comes into contact with the protruding portion 14 at the tip of the other side wall portion 12, the sheet fastening material 1 does not come off from the frame material F even if a pulling force acts on the sheet fastening material 1 toward the side opposite to the frame material. Furthermore, even if a pulling force acts on the sheet fastening material 1 toward the other side wall portion 12 or a pushing force acts in the depth direction, the screw V2 comes into contact with the other side wall portion 12 while being engaged therewith, so that rattling of the sheet fastening material 1 with respect to the frame material F and shifting of the frame material F in the depth direction can be prevented.

[0043] 2, a second guide groove 8 that guides the insertion of the screw V2 is provided on the plate portion 4a of the fitting portion 4, and this second guide groove 8 is set at a position and angle such that, when the screw V2 is screwed in, the threads on the outer periphery of the screw V2 bite into and abut on the inner tip of the other side wall portion 12. Therefore, when screwing the screw V2 into the plate portion 4a of the fitting portion 4, it is sufficient to screw the screw V2 along the second guide groove 8, making it easy to screw in and position the screw V2.

[0044] Furthermore, as shown in Figures 4 and 5, even when the screws V1, V2 are screwed in along the first guide groove 7 or the second guide groove 8, the screws V1, V2 do not penetrate the bottom 10 of the upper frame F1, and therefore no holes are made in the bottom 10.

[0045] In this embodiment, when the fitting portion 4 is fitted to the inside of the tip of the other side wall portion 12, the sheet fastening material 1 is attached to the frame material F so as not to come off from the upper frame F1 by pressing the other side wall portion 12 with the restoring force of the abutting portion 4b of the fitting portion 4. Therefore, when the sheet fastening material 1 is held to the frame material F to an extent that it is prevented from falling off the frame material F at the time when the fitting portion 4 is fitted to the inside of the tip of the other side wall portion 12, it is not necessary to fix the sheet fastening material 1 to the frame material F with the screws V1 and V2.

[0046] However, when the sheet fastening material 1 is prevented from coming off the frame material F by screwing the screws V1, V2 into the first guide groove 7 or the second guide groove 8, it is not necessary to fix the sheet fastening material 1 to the frame material F using the abutment portion 4b of the fitting portion 4. Therefore, for example, even if the opening width of the upper frame F1 is somewhat larger than the design value due to tolerance, the sheet fastening material 1 can be prevented from falling off by screwing the screws V1, V2 into the first guide groove 7 or the second guide groove 8. Therefore, when the screws V1, V2 are screwed into the first guide groove 7 or the second guide groove 8, it is easy to control the dimensions of the fitting portion 4 of the sheet fastening material 1.

[0047] By doing this, the sheet fastening materials 1 are attached to the frame materials F provided on each gable side of the vinyl greenhouse H, one on each side of the apex of the arch pipe P.

[0048] Next, we will explain the procedure for fixing the sheet S to the sheet fastening material 1 attached to each frame material F. First, although not shown, with one end of the sheet S covering the receiving pieces 21, 22 of the sheet holding portion 2 of one of the sheet fastening materials 1 attached to one of the frame materials F and the lower frame F2, an elastic member made of a wave-shaped spring is inserted from above the sheet S into the lower frame F2 to temporarily fix the sheet S.

[0049] 4 and 5, the receiving pieces 21, 22 are covered with the holding member 9 having a U-shaped cross section, and the fixing screw V3 is screwed in so as to penetrate the holding member 9 and the sheet S and engage with the grooves formed on the inner surfaces of the side pieces 20b, 20c. Then, one end of the sheet S is sandwiched between the holding member 9 and the sheet, and is held and fixed in place by the sheet holding portion 2 of one of the sheet fastening members 1.

[0050] The method of temporarily fixing the sheet S is not limited to the above method. For example, double-sided tape (not shown) may be affixed to the receiving pieces 21, 22 of the sheet holding portion 2 of one of the sheet fastening materials 1 attached to one of the frame materials F, and then one end of the sheet S may be placed on the receiving pieces 21, 22 to temporarily fix the sheet S.

[0051] However, when the sheet S is temporarily fixed by inserting an elastic member made of a corrugated spring into the lower frame F2, a stronger tension can be applied to the sheet S than when the sheet S is temporarily fixed with double-sided tape.

[0052] Returning to the other sheet fastening material 1 attached to the other frame material F located on the opposite side of the apex of the arch pipe P, the other end of the sheet S is fixed to the other sheet fastening material 1 in the same procedure as for the one sheet fastening material 1.

[0053] By doing this, the sheet S is stretched between the sheet fastening materials 1, 1 attached to the frame materials F, one on each gable side of the vinyl greenhouse H, sandwiching the apex of the arch pipe P.

[0054] In this embodiment, a hard sheet such as a polyester film or a fluorine film is used for the sheet S fixed to the sheet fixing material 1. However, a soft sheet such as a polyolefin film such as a vinyl chloride film or a PET film can also be fixed to the sheet fixing material 1.

[0055] Although not described in detail, a soft sheet can be fixed to the lower frame F2 of the frame material F in addition to the sheet S fixed to the sheet fastening material 1. Specifically, the soft sheet can be fixed to the lower frame F2 by inserting one end of the soft sheet into the groove F2a of the lower frame F2 and inserting an elastic member from above the soft sheet. Although not shown, a ventilation window can be provided below the frame material F, and the ventilation window can be opened and closed by the soft sheet fixed to the lower frame F2.

[0056] As described above, the sheet fastening material 1 of this embodiment comprises a sheet holding portion 2 capable of holding a sheet S, a clamping portion 3 that clamps the tip of one side wall portion 11 of the frame material F, and an engaging portion 4 that engages with the tip of the other side wall portion 12 of the frame material F.

[0057] According to this configuration, the sheet fastening material 1 having the sheet holding portion 2 suitable for attaching a hard sheet can be attached to the frame material F, so that a hard sheet can be fixed even to a frame material F that does not have a structure for holding a hard sheet. In addition, the sheet S can be placed on the sheet holding portion 2 and then covered with the pressing material 9, and the fixing screw V3 can be screwed in from above to sandwich the hard sheet between the sheet holding portion 2 and the pressing material 9, so that a stronger tension can be applied to the fixed sheet S and flapping of the sheet S can be prevented, compared to conventional sheet fastening materials that sandwich and fix a sheet together with a frame material.

[0058] Furthermore, according to the above configuration, the sheet fastening material 1 can be easily attached to the frame material F simply by clamping the tip of one side wall portion 11 with the clamping portion 3 and fitting the fitting portion 4 to the tip of the other side wall portion 12. Furthermore, since the sheet fastening material 1 can be attached to the frame material F by clamping the tip of one side wall portion 11 with the clamping portion 3 in this manner and fitting the fitting portion 4 to the tip of the other side wall portion 12, there is no need to insert screws into the bottom portion 10 of the frame material F when attaching the sheet fastening material 1 to the frame material F. Therefore, when the sheet fastening material 1 is attached to the frame material F with the clamping portion 3 facing the apex side of the arch pipe P as shown in Figures 4 and 5, even if condensation water generated on the inner surface of the sheet S due to the temperature difference between the inside and outside of the vinyl greenhouse H flows along the sheet holding portion 2 and the clamping portion 3, passes through the gap between the clamping portion 3 and one of the side wall portions 11, and enters the groove F1a of the upper frame F1, there is no risk of the condensation water entering the vinyl greenhouse H.

[0059] Furthermore, the sheet fastening material 1 of this embodiment has a retaining piece 6 that faces the outside of the other side wall portion 12. With this configuration, even if a force that pulls the sheet fastening material 1 upward toward the clamping portion 3 acts on the sheet fastening material 1 and a moment that rotates the sheet fastening material 1 clockwise in FIG. 2 with the tip of the other side wall portion 12 as a fulcrum acts on the sheet fastening material 1, the retaining piece 6 abuts against the other side wall portion 12 and prevents the sheet fastening material 1 from rotating. Therefore, even if the moment acts on the sheet fastening material 1, the sheet fastening material 1 can be prevented from falling off the frame material F.

[0060] In this embodiment, the anti-slip piece 6 abuts against the outer side of the other side wall portion 12, but it may be spaced apart from the other side wall portion 12 as long as it faces the outer side of the other side wall portion 12.

[0061] In the illustration, of the pair of side walls 11, 12 rising from both ends of the bottom 10 of the frame material F, the one on the right side in the illustration is one side wall 11 and the one on the left side in the illustration is the other side wall 12, but this is just one example, and the side wall 12 provided on the left side may be one side wall and the side wall 11 provided on the right side may be the other side wall. In other words, the sheet fastening material 1 may be attached to the upper frame F1 of the frame material F with the left and right sides reversed from those in FIG. 2.

[0062] Furthermore, in the sheet fastening material 1 of this embodiment, the retaining piece 6 is provided with a first guide groove 7 that guides the insertion of the screw V1. This configuration makes it easy to fix the sheet fastening material 1 to the frame material F using the screw V1. Furthermore, when using the screw V1, when the screw V1 is screwed in along the first guide groove 7, the screw V1 penetrates the retaining piece 6 and the other side wall portion 12, and the sheet fastening material 1 is connected to the frame material F by the screw V1, so that rattling of the sheet fastening material 1 with respect to the frame material F and shifting of the frame material F in the depth direction can be prevented, and the sheet fastening material 1 can be reliably prevented from falling off the frame material F.

[0063] Furthermore, the screws V1 do not penetrate the bottom 10 of the frame material F. Therefore, when the sheet fastening material 1 is attached to the frame material F with the clamping portion 3 facing the apex side of the arch pipe P as shown in Fig. 4, even if condensation water generated on the inner surface of the sheet S flows along the sheet holding portion 2 and the clamping portion 3, and passes through the gap between the clamping portion 3 and one of the side walls 11 and enters the groove F1a of the upper frame F1, there is no risk of the condensation water entering the vinyl greenhouse H.

[0064] Moreover, the sheet fastening material 1 of this embodiment has a second guide groove 8 that guides the insertion of the screw V2, the outer periphery of which abuts against the inner tip of the other side wall portion 12. This configuration makes it easy to fix the sheet fastening material 1 to the frame material F using the screw V2. Furthermore, when the screw V2 is used, when the screw V2 is screwed in along the second guide groove 8, the thread formed on the outer periphery of the screw V2 abuts while biting into the inner tip of the other side wall portion 12. This prevents the sheet fastening material 1 from rattling relative to the frame material F and from shifting in the depth direction of the frame material F, and also reliably prevents the sheet fastening material 1 from falling off the frame material F.

[0065] Furthermore, the screws V2 do not penetrate the bottom 10 of the frame material F. Therefore, when the sheet fastening material 1 is attached to the frame material F with the clamping portion 3 facing the apex side of the arch pipe P as shown in Fig. 5, even if condensation water generated on the inner surface of the sheet S flows along the sheet holding portion 2 and the clamping portion 3, and passes through the gap between the clamping portion 3 and one of the side walls 11 and enters the groove F1a of the upper frame F1, there is no risk of the condensation water entering the vinyl greenhouse H.

[0066] Moreover, the sheet fastening material 1 of this embodiment has a protrusion 5 that protrudes from the fitting portion 4 toward the side opposite the clamping portion. With this configuration, when fitting the fitting portion 4 to the tip of the other side wall portion 12, if the protrusion 5 is pressed, the distance to the clamping portion 3, which serves as the fulcrum, becomes greater than when the fitting portion 4 is pressed, so that less force is required to press the fitting portion 4. Therefore, with the above configuration, the sheet fastening material 1 can be attached to the frame material F more easily.

[0067] In the sheet fastening material 1 of this embodiment, the fitting portion 4 abuts against the inner tip of the other side wall portion 12. With this configuration, the sheet fastening material 1 can be attached to frame materials F of various shapes, regardless of the outer shape of the other side wall portion 12. However, the fitting portion 4 may also abut against the outer tip of the other side wall portion 12 to be fitted thereto.

[0068] Next, a sheet fastening material 1A according to a second embodiment of the present invention will be described. The basic structure of the sheet fastening material 1A according to this embodiment is the same as that of the sheet fastening material 1 according to the first embodiment. Below, the structure different from that of the first embodiment will be described, and the common structure will be given the same reference numerals and detailed description will be omitted.

[0069] As shown in Figure 6, the sheet fixing material 1A of this embodiment differs from the sheet fixing material 1 of the first embodiment in that the outer piece 3b of the clamping portion 3 is provided with a flange portion 3c extending along one of the side wall portions 11.

[0070] In this way, when the clamping portion 3 has an inner piece 3a abutting against the inside of one of the side wall portions 11 and an outer piece 3b abutting against the outside of the one of the side wall portions 11 and clamping the tip of the one of the side wall portions 11 together with the inner piece 3a, and the outer piece 3b has a flange portion 3c extending along the one of the side wall portions 11, even if a force is applied to pull the fitting portion 4 side in the upward direction in Figure 6 against the sheet fastening material 1A, the flange portion 3c abuts against the one of the side wall portions 11, thereby preventing the sheet fastening material 1A from falling off the frame material F.

[0071] Furthermore, even if condensation water formed on the inner surface of the sheet S flows through the sheet holding portion 2 to the outer piece 3b of the clamping portion 3, the outer piece 3b has a flange portion 3c extending along one of the side wall portions 11, and the tip of the flange portion 3c is not in contact with the upper end of the one of the side wall portions 11, so that the condensation water can be prevented from entering the frame material F through the gap between the clamping portion 3 and the one of the side wall portions 11.

[0072] 6, in this embodiment, the gutter frame F3 of the frame material F is disposed below the flange 3c, so that even if condensation water generated on the inner surface of the sheet S flows down the sheet holding portion 2 and adheres to the flange 3c, and drips from the tip of the flange 3c, the condensation water is collected in the gutter frame F3. Therefore, it is possible to prevent the condensation water adhered to the sheet fastening material 1A from entering the vinyl greenhouse H.

[0073] Next, a sheet fastening material 1B according to a third embodiment of the present invention will be described. The basic structure of the sheet fastening material 1B according to this embodiment is the same as that of the sheet fastening material 1 according to the first embodiment. Below, the structure different from that of the first embodiment will be described, and the common structure will be given the same reference numerals and detailed description will be omitted.

[0074] As shown in Figure 7, in the sheet fastening material 1B of this embodiment, the clamping portion 30 has a support piece 30a that protrudes from one side piece 20b of the main body portion 20 and abuts the inside of one side wall portion 11, and this support piece 30a clamps the tip of one side wall portion 11 together with a receiving piece 21 that protrudes from the upper end of one side piece 20b of the main body portion 20 toward the one side wall portion 11.

[0075] In this way, by clamping the tip of one of the side wall portions 11 between the support piece 30a protruding from one of the side wall portions 11 of the main body portion 20 and the receiving piece 21 on the one of the side wall portions 11, the upper end position on which the sheet S of the sheet holding portion 2 of the sheet fastening material 1B attached to the frame material F is placed can be made lower than the position in the first embodiment.

[0076] Then, when the sheet S held by the sheet holding portion 2 is blown by the wind, the moment acting on the sheet fastening material 1B can be reduced, so that the sheet fastening material 1B becomes less likely to fall off the frame material F.

[0077] Next, a sheet fastening material 1C according to a fourth embodiment of the present invention will be described. The basic structure of the sheet fastening material 1C according to this embodiment is the same as that of the sheet fastening material 1 according to the first embodiment. Below, the structure different from the first embodiment will be described, and the same reference numerals will be used to designate the common structure, and detailed description thereof will be omitted.

[0078] As shown in FIG. 8, a sheet fastening material 1C of the present embodiment differs from the sheet fastening material 1 of the first embodiment in that it includes a stopper portion 40 that faces the opening of the groove F2a of the lower frame F2.

[0079] The stopper portion 40 in this embodiment protrudes outward from the tip of the retaining piece 6 as shown in FIG. 8. When the sheet retaining material 1 is attached to the upper frame F1, the stopper portion 40 is disposed above the groove F2a and faces the opening of the groove F2a. The distance L1 between the tip of the stopper portion 40 and the tip of the left wall 17 on the opposite side of the upper frame, which is the left side in FIG. 8, of the pair of side walls 16, 17 in the lower frame F2 is set to be equal to or less than the width L2 of the opening of the groove F2a. In this embodiment, the stopper portion 40 is provided at the tip of the retaining piece 6, but may be provided at a portion other than the tip of the retaining piece 6.

[0080] Here, an opening / closing sheet S1 for opening and closing a ventilation window (not shown) provided below the frame material F, and a net N for preventing insects and birds from entering the vinyl greenhouse H through the ventilation window are fixed in the groove F2a of the lower frame F2 of the frame material F. Specifically, first, one end of the net N is inserted into the groove F2a, and a first spring SP1 which is a wave-shaped spring is inserted from above the net N, thereby fixing the net N to the groove F2a of the lower frame F2. Next, one end of the opening / closing sheet S1 is inserted into the groove F2a from above the first spring SP1, and a second spring SP2 which is a wave-shaped spring is inserted from above the opening / closing sheet S1, thereby fixing the opening / closing sheet S1 to the groove F2a of the lower frame F2.

[0081] Also, in this embodiment, as shown in FIG. 8, when the sheet S is fixed to the sheet holding portion 2 of the sheet fastening material 1C attached to the upper frame F1, one end of the sheet S is covered with the second spring SP2 inserted into the groove F2a of the sheet holding portion 2 and the lower frame F2, and a third spring SP3, which is a wavy spring, is inserted into the groove F2a of the lower frame F2 from above the sheet S to temporarily fix the sheet S to the groove F2a of the lower frame F2, and then a pressure member 9 is placed over the sheet holding portion 2, and a fixing screw V3 is screwed between the side pieces 20b, 20c of the sheet holding portion 2 from above the pressure member 9.

[0082] That is, as shown in FIG. 8, the three springs SP1, SP2, and SP3 that press the net N, the opening / closing sheet S1, and the sheet S, respectively, are inserted in an overlapping manner into the groove F2a of the lower frame F2.

[0083] When the three springs SP1, SP2, and SP3 are inserted into the groove F2a of the lower frame F2, if the groove F2a of the lower frame F2 is shallow, the third spring SP3 may shrink and fall off the lower frame F2 if it receives excessive tension from the sheet S.

[0084] Specifically, for example, when the sheet S is blown by the wind, a force is applied to the portion of the sheet S between the pressing member 9 and the third spring SP3 in Fig. 8, so that the third spring SP3 is subjected to a compressive force in the left-right direction and a moment is applied to lift the right side relative to the lower frame F2 with the left side as the fulcrum in Fig. 8. Then, the third spring SP3 rotates with the left side as the fulcrum in Fig. 8, and there is a possibility that the right side of the third spring SP3 will come off the right side wall 16 and fall out of the groove F2a.

[0085] In contrast, the sheet retaining member 1C of the present embodiment includes a stopper portion 40 that faces the opening of the groove F2a, and the distance L1 from the tip of the stopper portion 40 to the tip of the left side wall 17 of the lower frame F2 is equal to or smaller than the width L2 of the opening of the groove F2a. The width (natural length) of the third spring SP3 in the lateral direction in FIG. 8 is wider than the width L2 of the opening of the groove F2a.

[0086] Therefore, when the right side of the third spring SP3 comes off the right side wall 16, the third spring SP3 widens by its own restoring force, so that the right side of the third spring SP3 is caught by the stopper portion 40 arranged above the groove F2a and held between the stopper portion 40 and the left side wall 17. Therefore, in the sheet retaining member 1C of this embodiment, it is possible to reliably prevent the third spring SP3 from falling off the lower frame F2.

[0087] Furthermore, there may be cases where there is no space in the groove F2a to insert the sheet S and the third spring SP3 due to reasons such as overlapping wrinkles in the net N or the opening / closing sheet S1 fixed in the groove F2a. However, even in such cases, with the sheet fastening material 1C of this embodiment, the third spring SP3 can be held between the stopper portion 40 and the left side wall 17, so that the sheet S can be temporarily fixed.

[0088] In addition, since the left side of the portion of the seat S fixed to the lower frame F2 is not supported in any way, even if the left side portion of the seat S is blown by the wind, no tension is generated that compresses the third spring SP3. Therefore, the left side of the third spring SP3 does not come off the left side wall 17 and fall off.

[0089] Furthermore, since the distance L1 from the tip of the stopper portion 40 to the tip of the left side wall 17 of the lower frame F2 is less than the width L2 of the opening of the groove F2a, when the third spring SP3 is held by the stopper portion 40 and the left side wall 17 as shown in FIG. 9, the third spring SP3 is less likely to fall off from the lower frame F2 than when it is inserted into the groove F2a as shown in FIG. 8.

[0090] 8 and 9, the lower surface of the stopper portion 40 in this embodiment, which is the surface that comes into contact with the third spring SP3, is curved so as to be in close contact with the outer circumferential surface of the third spring SP3. Therefore, when the right side of the third spring SP3 in FIG. 8 comes off the right side wall 16 of the lower frame F2 and the outer circumferential surface of the wire of the third spring SP3 comes into contact with the lower surface of the stopper portion 40, the outer circumferential surface of the wire of the third spring SP3 fits into the stopper portion 40, so that the right side of the third spring SP3 can be reliably caught by the stopper portion 40 when it falls off. The shape of the lower surface of the stopper portion 40 is not particularly limited, and may be flat, for example, as long as it is not a shape that encourages the third spring SP3 to fall off.

[0091] In order to reliably prevent the third spring SP3 from falling off the lower frame F2, it is also possible to make the depth of the groove F2a of the lower frame F2 deep enough to allow the three springs SP1, SP2, and SP3 to be inserted with ease. In that case, the frame material F would become larger, and the material cost would increase, leading to an increase in manufacturing cost. According to the sheet fastening material 1C of this embodiment, by providing the stopper portion 40, it is possible to prevent the third spring SP3 from falling off the lower frame F2 even if the depth of the groove F2a of the lower frame F2 is made shallow, thereby suppressing an increase in the cost of the frame material F.

[0092] In addition, in this embodiment, three springs SP1, SP2, and SP3 are inserted into the groove F2a of the lower frame F2, but the number of springs accommodated in the groove F2a can be appropriately changed depending on the number of sheets to be fixed to the lower frame F2.

[0093] In this embodiment, the stopper portion 40 is provided on the retaining piece 6, but there is no particular limitation on which part of the sheet fastening material 1C the stopper portion 40 is provided on. However, from the viewpoint of preventing the third spring SP3 from falling off due to the tension acting on the sheet S1 fixed by the sheet fastening material 1C, it is preferable that the stopper portion 40 is disposed above the side wall 16 on the upper frame F1 side with respect to the opening of the lower frame F2.

[0094] Also, for example, when the sheet fastening material 1C is inverted left and right and the clamping portion 3 is made to clamp the tip of the side wall portion 12 on the left side in Figure 8 and the fitting portion 4 is fitted into the tip of the side wall portion 11 on the right side in Figure 8, the clamping portion 3 is positioned near the lower frame F2, so a stopper portion 40 may be provided on the clamping portion 3.

[0095] Although the preferred embodiment of the present invention has been described in detail above, it will be appreciated that modifications, variations and changes can be made thereto without departing from the scope of the appended claims. [Explanation of symbols]

[0096] DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C...sheet retaining member, 2...sheet holding portion, 3, 30...clamping portion, 3a...inner piece, 3b...outer piece, 3c...flange portion, 4...fitting portion, 5...projection portion, 6...preventive piece, 7...first guide groove, 8...second guide groove, 10...bottom portion, 11, 12...side wall portion, 15...bottom wall, 16, 17...side wall, 20...main body portion, 21, 22...receiving piece, 30a...support piece, 40...stopper portion, F...frame material, F1...upper frame, F2...lower frame, F2a...groove, S...sheet, SP1, SP2, SP3...spring, V1, V2...screw

Claims

1. A sheet fastening member for fastening a sheet to a frame member having a bottom and a pair of side walls that stand upright from both ends of the bottom and face each other, A sheet holding portion capable of holding the sheet; a clamping portion that clamps a tip end of one of the side walls of the frame material; a fitting portion that is fitted to a tip end of the other side wall portion of the frame material; a retaining piece facing the outer side of the other side wall portion, The retaining piece is provided with a first guide groove for guiding the insertion of the screw. A sheet fastening material characterized by the above.

2. A sheet fastening member for fastening a sheet to a frame member having a bottom and a pair of side walls that stand upright from both ends of the bottom and face each other, A sheet holding portion capable of holding the sheet; a clamping portion that clamps a tip end of one of the side walls of the frame material; a fitting portion that is fitted to a tip end of the other side wall portion of the frame material, The other side wall portion has a second guide groove that guides the insertion of a screw whose outer periphery abuts on the inner tip of the other side wall portion. A sheet fastening material characterized by the above.

3. A sheet fastening member for fastening a sheet to a frame member having a bottom and a pair of side walls that stand upright from both ends of the bottom and face each other, A sheet holding portion capable of holding the sheet; a clamping portion that clamps a tip end of one of the side walls of the frame material; a fitting portion that is fitted to a tip end of the other side wall portion of the frame material, The seat retaining portion has a main body portion having a U-shaped cross section that is disposed between the pair of side wall portions of the frame material and extends along an extension direction of the frame material, and a receiving piece that protrudes from each end of the main body portion toward an outside of the main body portion, the clamping portion has a support piece that protrudes from the one side wall of the main body portion and abuts against an inner side of the one side wall, The support piece holds the tip of the one side wall portion together with the receiving piece on the one side wall portion side. A sheet fastening material characterized by the above.

4. The other side wall portion has a retaining piece facing the outside.

4. The sheet fastening material according to claim 2 or 3.

5. A protrusion protruding from the fitting portion toward the opposite side to the clamping portion is provided. The sheet fastening material according to any one of claims 1 to 4.

6. The fitting portion abuts against an inner tip of the other side wall portion. The sheet fastening material according to any one of claims 1 to 5.

7. the clamping portion has an inner piece that abuts against an inner side of the one side wall portion, and an outer piece that abuts against an outer side of the one side wall portion and clamps a tip end of the one side wall portion together with the inner piece, The outer piece has a flange extending along the one side wall portion. The sheet fastening material according to any one of claims 1 to 6.

8. A frame member having a bottom and a pair of side walls that stand upright from both ends of the bottom and face each other; a sheet fastening member that is attached to the frame member and fastens the sheet; the sheet fastening member has a sheet holding portion capable of holding the sheet, a clamping portion that clamps a tip of one side wall portion of the frame material, and a fitting portion that is fitted to a tip of the other side wall portion of the frame material, The tip of one of the side walls is clamped by the clamping portion, and in a state in which the fitting portion is not fitted to the tip of the other side wall portion, the fitting portion is rotated in a direction approaching the other side wall portion with the tip of the one side wall portion as a fulcrum, so that the fitting portion can be fitted to the tip of the other side wall portion. A sheet fixing device comprising:

9. a frame material having an upper frame having a bottom and a pair of side walls rising from both ends of the bottom and facing each other, and a lower frame arranged diagonally below the upper frame, the lower frame having a bottom wall and a pair of side walls rising from both ends of the bottom wall and facing each other, and a groove formed between the bottom wall and the pair of side walls, into which a corrugated spring can be inserted, the opening of which has a width narrower than the width of the bottom wall; a sheet fastening member that is attached to the upper frame of the frame member and fastens the sheet, the sheet fastening member has a sheet holding portion capable of holding the sheet, a clamping portion for clamping a tip end of one side wall portion of the upper frame, a fitting portion for fitting into a tip end of the other side wall portion of the upper frame, and a stopper portion facing the opening of the groove, The distance between the tip of the stopper portion and the tip of the side wall opposite the upper frame of the pair of side walls of the lower frame is equal to or less than the width of the opening. A sheet fixing device comprising:

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