Sheet fixing frame

Abstract

To provide a sheet fixing frame capable of suppressing deterioration of a sheet.SOLUTION: A sheet fixing frame 1 of the invention has a bottom piece 2 and a pair of side pieces 3, 4 which stands from each of both ends of the bottom piece 2, in which a groove 5 is formed between the bottom piece 2 and respective side pieces 3, 4, the groove having a width W1 of the opening is narrower than a width W2 of the bottom piece 2 side, for fixing a sheet S inserted into the groove 5 by a fastening material 6 inserted into the groove 5. The respective side pieces 3, 4 have protrusion parts 3c, 4c each protruded toward the groove 5 side on a tip end thereof opposite to the bottom piece 2. The respective protrusion parts 3c, 4c have chamfer parts 3d, 4d on a tip end part thereof, the tip end parts of the protrusion parts facing each other on at least one end of the sheet fixing frame 1 in an extension direction.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a sheet fixing frame. [Background technology]

[0002] Generally, a sheet fixing frame is fixed to the framework of a vinyl greenhouse and is used to stretch a sheet over the gable surface, roof surface, sides, etc. of the greenhouse.

[0003] Such a sheet fixing frame is long and includes a bottom piece and side pieces that rise from both ends of the bottom piece while inclining obliquely inward, and the width of an opening between the bottom piece and each side piece is equal to or larger than the width of the bottom piece. Piece A groove narrower than the width of the side of the sheet fixing frame is formed along the longitudinal extension direction. With the sheet fixing frame configured in this way, after inserting a sheet into the groove, a wave-shaped spring can be inserted into the groove from above the sheet, and the sheet can be fixed in the groove of the sheet fixing frame by the elastic force exerted by the spring.

[0004] In addition, in the vinyl greenhouse, the sheet is spread over the entire length in the depth direction. Zhang Therefore, it is necessary to provide a continuous groove for fixing the sheet over the entire depth of the greenhouse. However, since the length of one sheet fixing frame is limited, it is necessary to connect multiple sheet fixing frames to form a continuous groove for fixing the sheet according to the entire depth of the greenhouse. Note that even if the width of the installation location of the sheet fixing frame on the gable side of the greenhouse is longer than the sheet fixing frame, it is necessary to connect multiple sheet fixing frames to provide the groove.

[0005] Therefore, in conventional seat fixing frames, swaging is applied to one end of the seat fixing frame in the extension direction to reduce the cross-sectional shape of that end as is to form a joint portion, and the joint portion is inserted into the other end of the adjacent seat fixing frame to connect the seat fixing frames together (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Utility Model Application Publication No. 2-20447 Summary of the Invention [Problem to be solved by the invention]

[0007] Here, conventional sheet fixing frames have protruding portions (curled portions) that protrude from the tips of the side pieces toward the inside of the groove, and the cross-section of the joint portion is one size smaller than the other portions, making the volume of the groove smaller at the joint portion compared to the other portions.

[0008] As a result, the sheet fixed in the groove at the joint portion may be vibrated by wind or subjected to large tension, causing it to be pressed hard against the edge of the end face of the protrusion, which may cause it to come into contact and become rubbed and deteriorated.

[0009] This type of sheet deterioration occurs when the sheet abuts against the edges of the protrusions at the ends of the sheet fixing frame, and is particularly likely to occur at joints where the volume within the groove is narrow and large tension is likely to act on the sheet.

[0010] SUMMARY OF THE PRESENT DISCLOSURE In view of the above, an object of the present invention is to provide a sheet fixing frame capable of suppressing deterioration of the sheet. [Means for solving the problem]

[0011] In order to solve the above-mentioned problems, the sheet fixing frame of the present invention has a bottom piece and a pair of side pieces standing up from both ends of the bottom piece, and the width of the opening between the bottom piece and each side piece is PieceA sheet fixing frame in which a groove narrower than the width of the side is formed and a sheet inserted into the groove is fixed by a stopper inserted into the groove, and each side piece has a protruding portion protruding toward the groove side at the tip opposite to the bottom piece, and each protruding portion is a tip portion facing each other at at least one end in the extension direction of the sheet fixing frame. Face to Has a handle When the bottom side is downward and the opposite bottom side is upward, the chamfered portion is formed by cutting off the tip portion obliquely from the upper end of the end face of one end side of the protrusion to the lower end of the protrusion as viewed from the groove side. In addition, the sheet fixing frame of another invention is ,bottom A sheet fixing frame having a bottom piece and a pair of side pieces standing up from both ends of the bottom piece, forming a groove between the bottom piece and each side piece with an opening width narrower than the width of the bottom piece side, and fixing a sheet inserted into the groove by a fastener inserted into the groove, wherein each side piece has a protruding portion protruding toward the groove side at an end opposite the bottom piece, and each protruding portion has a chamfered portion at an end portion facing each other at at least one end in the extension direction of the sheet fixing frame, and the chamfered portion is formed so that the tip side of one end of the protruding portion is cut off perpendicular to the bottom piece and obliquely when viewed from the perpendicular direction to the bottom piece. With the sheet fixing frame configured in this way, the chamfered portion prevents the end face of the protruding portion from coming into contact with a sharp edge.

[0012] Also , Books According to the sheet fixing frame of the present invention, since no chamfer is provided on the opposite bottom side of the protruding portion, deterioration of the sheet can be more effectively prevented.

[0013] Furthermore, one end of the sheet fixing frame may have a reduced portion that is reduced in cross section compared to the other portion by shrink molding, and a chamfer may be formed on each protruding portion at the tip of the reduced portion. According to the sheet fixing frame configured in this manner, since it has a reduced portion, it is possible to connect the sheet fixing frames to each other, and it is also possible to effectively suppress deterioration of the sheet even in the reduced portion where the groove volume is narrower than the other portion of the sheet fixing frame and the sheet is more likely to be subjected to large tension.

[0014] The height of the reduction portion in the sheet fixing frame may be lower toward one end, and the height of the end of the reduction portion may be lower than the height of the groove at the other end of the sheet fixing frame. With the sheet fixing frame configured in this way, the height of the protruding portion of the reduction portion is lower than the height of the protruding portion at the other end of the other sheet fixing frame to which the end of the reduction portion at one end of the sheet fixing frame is connected, so that the sheet is less likely to come into contact with the end face of the protruding portion of the reduction portion, and deterioration of the sheet can be effectively suppressed when the sheet vibrates or is subjected to a large tension.

[0015] Furthermore, the reduced portion of the sheet fixing frame is reduced in two stages. destination The cross section of the end side may be reduced more than that of the base end side. In this case, when the sheet fixing frames are connected to each other, the reduced portion of one sheet fixing frame may be of Since it becomes easy to insert the other sheet into the other end of the fixing frame, the construction burden on greenhouse construction workers is reduced.

[0016] The seat fixing frame may be configured such that the bottom piece of the reduced portion has either a one-end locking projection or a one-end hole projecting toward the opposite side from the groove, and the bottom piece of the other end opposite to the one end has an other-end hole when the bottom piece of the reduced portion has the one-end locking projection, or has an other-end locking projection projecting toward the groove when the bottom piece of the reduced portion has the one-end hole. With the seat fixing frame configured in this way, when the reduced portion of one seat fixing frame is inserted all the way into the groove of the other end of the other seat fixing frame, the one-end locking projection enters the other-end hole or the other-end locking projection enters the one-end hole, preventing it from coming off, and the seat fixing frames can be firmly connected to each other. Effect of the Invention

[0017] According to the sheet fixing frame of the present invention, deterioration of the sheet can be suppressed. [Brief description of the drawings]

[0018] [Figure 1]FIG. 2 is a front view of the sheet fixing frame according to the embodiment. [Diagram 2] FIG. 4 is a rear view of the sheet fixing frame according to the embodiment. [Diagram 3] FIG. 4 is a left side view of the sheet fixing frame according to the embodiment. [Figure 4] FIG. 2 is a plan view of a sheet fixing frame according to an embodiment. [Diagram 5] FIG. 4 is a bottom view of the sheet fixing frame according to the embodiment. [Figure 6] FIG. 2 is a perspective view of a sheet fixing frame according to an embodiment. [Figure 7] 1 is a perspective view showing a state in which a sheet and a fastening member are inserted into a sheet fixing frame in one embodiment. FIG. [Figure 8] FIG. 1 is a diagram showing a state in which a sheet fixing frame according to one embodiment is used in a vinyl greenhouse. [Figure 9] FIG. 13 is a partially enlarged perspective view of a chamfered portion of a protrusion of a sheet fixing frame according to an embodiment. [Figure 10] FIG. 11 is a front view of a sheet fixing frame according to a first modified example of the embodiment. [Figure 11] FIG. 11 is a plan view of one end portion of a sheet fixing frame in a first modified example of the embodiment. [Figure 12] 13 is a plan view of a sheet fixing frame in a second modified example of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] As shown in Figs. 1 to 6, the sheet fixing frame 1 according to one embodiment of the present invention includes a long bottom piece 2 extending in the longitudinal direction, and side pieces 3 and 4 standing upright in parallel from both ends of the bottom piece 2. Between the bottom piece 2 and each side piece 3 and 4, a groove 5 having an opening width W1 narrower than the bottom width W2 is continuously formed in the longitudinal direction. As shown in Fig. 7, the sheet fixing frame 1 fixes the sheet S inserted into the groove 5 by a fastener 6 inserted from above the sheet S into the groove 5. The right side view of the sheet fixing frame 1 is not shown because it is symmetrical to the left side view shown in Fig. 3. In Fig. 3, in order to facilitate understanding of the chamfered portions 3d and 4d described later, an enlarged side view of the protruding portion 4c of the side piece 4, which is actually hidden behind the side piece 3 when the sheet fixing frame 1 is viewed from the side, is shown in a circle indicated by a broken line.

[0020] 8, multiple sheet fixing frames 1 are spanned in parallel along the depth direction across multiple arch-shaped pipes P that are installed parallel to the depth direction of the vinyl greenhouse H, and are also attached to the pipes P on the gable surface of the vinyl greenhouse H parallel to the ground. In this way, the sheet fixing frames 1 are attached to the pipes P at appropriate positions as needed on the gable surface, side surface, roof surface, etc. of the vinyl greenhouse H, and together with the pipes P, form part of the framework of the vinyl greenhouse H.

[0021] After the frame of the vinyl greenhouse H is assembled, the sheet fixing frame 1 fixes the sheet S, which is to be placed over the frame, to the frame, and the vinyl greenhouse H is assembled. H It is used to spread sheet S on the gable surface, roof surface, sides, etc. of a building.

[0022] Each component of the sheet fixing frame 1 will be described in detail below. As shown in Figures 2 to 6, the sheet fixing frame 1 is a long frame material with a bottom piece 2 and side pieces 3, 4 formed by bending and molding a single plate material, and has a reduced portion R formed by reducing it by swaging at one end in the extension direction. The reduced portion R has a cross-sectional shape that is almost the same as the cross-sectional shape of the sheet fixing frame 1 except for the reduced shape of the portion other than the reduced portion R.

[0023] The bottom piece 2 is provided on the lower side of the sheet fixing frame 1 in FIG. 1 along the extension direction of the sheet fixing frame 1, and extends in the depth direction in FIG. 1. The bottom piece 2 has curved portions 2a, 2a formed by bending downward at both left and right ends in FIG. 1, and the central portion 2b is disposed slightly above the lower ends of the curved portions 2a, 2a. The bottom piece 2 also has a bent portion 2c at the center of the central portion 2b, which protrudes toward the anti-groove side, which is the downward side in FIG. 1, along the longitudinal direction of the bottom piece 2, and two bent portions 2d, 2d that protrude toward the anti-groove side, which is the downward side in FIG. 1, parallel to the bent portion 2c along the longitudinal direction of the bottom piece 2 at two locations on the borders with the curved portions 2a, 2a at both ends of the central portion 2b, except for the portion corresponding to the reduced portion R of the bottom piece 2. The central bent portion 2c is also formed in the reduced portion R, and forms a thin groove that is continuous along the extension direction over the entire length of the bottom piece 2 when viewed from the groove 5 side. In the sheet fixing frame 1 of this embodiment, the lower ends of the three bent portions 2c, 2d, 2d are at the same level as the lower ends of the curved portions 2a, 2a, and when the bottom piece 2 is butted against the pipe P perpendicularly, the curved portions 2a, 2a and the bent portions 2c, 2d, 2d come into contact with the pipe P, allowing the sheet fixing frame 1 to come into contact with the pipe P without rattling. Note that the lower ends of the bent portions 2c, 2d, 2d may protrude downward beyond the lower ends of the curved portions 2a, 2a and form the lowest ends of the bottom piece 2, and in this case too, the three bent portions 2c, 2d, 2d come into contact with the pipe P at three points, allowing the sheet fixing frame 1 to come into contact with the pipe P without rattling.

[0024] The central bent portion 2c forms a narrow groove in the bottom piece 2 into which the tip of a screw (not shown) can be inserted when the bottom piece 2 of the sheet fixing frame 1 is screwed to the pipe P. If the tip of the screw is inserted into the narrow groove, the tip of the screw will not shift in the width direction of the groove 5 when the screw is screwed in, and will penetrate the bottom piece 2 and be screwed into the pipe P. In this way, the central bent portion 2c can be used to assist the worker in screwing the sheet fixing frame 1 to the pipe P or the like. For the screwing work, it is sufficient to provide the central bent portion 2c on the bottom piece 2, but if the central bent portion 2c protrudes downward in FIG. 1 from the lower end of the curved portions 2a, 2a due to a processing error, when the bottom piece 2 is abutted against the pipe P, the pipe P will only come into contact with the central bent portion 2c and one of the two curved portions 2a, 2a, and a gap will be created between the other curved portion 2a and the pipe P, causing the sheet fixing frame 1 to be poorly seated on the pipe P and rattling. However, as in the sheet fixing frame 1 of this embodiment, if the bottom piece 2 is provided with left and right bending portions 2d, 2d of the same height in addition to the central bending portion 2c, even if the three bending portions 2c, 2d, 2d protrude downward from the lower ends of the curved portions 2a, 2a, the three bending portions 2c, 2d, 2d will abut against the pipe P evenly, so that the sheet fixing frame 1 can abut against the pipe P without any rattling.

[0025] In addition, the bottom piece 2 in the sheet fixing frame 1 of this embodiment has the curved parts 2a, 2a, the central part 2b and the three bent parts 2c, 2d, 2d, which is advantageous in that the moment of inertia becomes large and the rigidity against bending of the bottom piece 2 can be improved, but the shape of the bottom piece 2 can be arbitrarily changed in design with or without the curved parts 2a, 2a and the bent parts 2c, 2d, 2d, and can be a flat plate without unevenness. In addition, since the sheet fixing frame 1 can be fixed with screws by forming the narrow groove on the groove 5 side of the bottom piece 2, the narrow groove may be formed in the bottom piece 2 by processing so that no protrusions are formed on the lower surface of the bottom piece 2.

[0026] In addition, the reduced portion R of the bottom piece 2 is provided with two ribs 2e, 2e that protrude parallel to the groove 5 side along the extension direction of the bottom piece 2, sandwiching the bent portion 2c, at the central portion 2b of the bottom piece 2 in the reduced portion R. The ribs 2e, 2e do not have to be provided on the bottom piece 2, but when the cross section of the sheet fixing frame 1 is reduced overall by swaging to form the reduced portion R at one end of the sheet fixing frame 1, the formation of the ribs 2e, 2e allows material to escape, preventing springback or large residual stress from occurring in the reduced portion R.

[0027] Next, the side pieces 3, 4 rising from both ends of the bottom piece 2 are formed in a symmetrical shape in Figure 1, and both have curved side portions 3a, 4a that rise while curving outward from the left or right end in Figure 1, which is the longitudinal side of the bottom piece 2, raised portions 3b, 4b that rise upward in Figure 1 from the opposite bottom side end of the curved side portions 3a, 4a, and protruding portions 3c, 4c that are connected to the opposite curved end side of the raised portions 3b, 4b, which are the tip side opposite the bottom piece 2 of the side pieces 3, 4, and protrude toward the groove 5.

[0028] As shown in FIG. 1, the curved side portions 3a, 4a are formed in a circular arc shape that is convex in a direction away from each other and continues to the curved portions 2a, 2a at both ends of the bottom piece 2. The rising portions 3b, 4b are respectively connected to the upper ends of the curved side portions 3a, 4a. Towards The curved sides 3a, 4a of the groove 5 formed by the bottom piece 2 and the side pieces 3, 4 are gradually changed in position to be approximately perpendicular to the bottom piece 2, and the width between the curved side parts 3a, 4a is wider than the width between the rising parts 3b, 4b. When the retaining material 6 contained in the groove 5 described later is inserted between the curved side parts 3a, 4a in the groove 5, the retaining material 6 is unlikely to fall out from between the curved side parts 3a, 4a. In the sheet fixing frame 1 of this embodiment, the side pieces 3, 4 have the curved side parts 3a, 4a and the rising parts 3b, 4b, but may be linear from the base end to the protruding parts 3c, 4c. The rising parts 3b, 4b are approximately perpendicular to the bottom piece 2 except for the parts connected to the curved side parts 3a, 4a, but may be inclined to narrow the width of the opening side of the groove 5.

[0029] The protrusions 3c, 4c are formed by bending and molding the tips of the side pieces 3, 4 toward the inside of the groove 5, and have a cross section in the shape of a roughly rounded triangle with the apexes at the tips formed by bending being caused to protrude toward the groove 5 so as to be closest to each other. The surfaces of the protrusions 3c, 4c facing the groove 5 are curved so as not to be sharp, as these are the parts that come into contact with the sheet S inserted into the groove 5, but the design can be changed to any shape that does not damage the sheet S. In addition, since the sheet fixing frame 1 of this embodiment is molded by bending a plate material, the parts corresponding to the protrusions 3c, 4c are formed by bending the plate material into a curved shape, but when the sheet fixing frame 1 is manufactured by drawing or extruding, the protrusions 3c, 4c do not need to be molded by bending. teeth Even when the sheet fixing frame 1 is manufactured by drawing or extrusion, the shape of the groove 5 sides of the protrusions 3c and 4c facing each other can be set arbitrarily as long as it does not damage the sheet S, as described above.

[0030] The bottom piece 2 and the side pieces 3, 4 thus constructed form the groove 5 on the inside of the sheet fixing frame 1, as described above. The width W1 of the opening of the groove 5 is determined by the distance between the protruding parts 3c, 4c protruding from the tips of the side pieces 3, 4 toward the groove 5 on the inside, as shown in FIG. 1, and the maximum width W2 of the bottom of the groove 5 is determined by the distance between the curved side parts 3a, 4a of the side pieces 3, 4. and others Thus, groove 5 has a dovetail shape with a narrow opening, with width W1 being narrower than width W2.

[0031] 2 and 6, the side pieces 3, 4 in the reduced portion R at one end of the sheet fixing frame 1 are bent so that the upper sides of the rising parts 3b, 4b are parallel to the bottom piece 2 toward the groove 5. Therefore, the positions of the protruding parts 3c, 4c in the reduced portion R are located inside the groove 5 more than the positions of the protruding parts 3c, 4c in the portion of the sheet fixing frame 1 other than the reduced portion R.

[0032] The height of the reduced portion R in the sheet fixing frame 1 is swaged so that it decreases toward one end of the sheet fixing frame 1, and the height of the end of the reduced portion R, which is one end of the sheet fixing frame 1, is lower than the height of the groove 5 at the other end of the sheet fixing frame 1. The reduced portion R is formed in two stages so that the one end side, which is the tip side of the reduced portion R, has a smaller cross-sectional shape than the base end side.

[0033] That is, the reduced portion R of the sheet fixing frame 1 of this embodiment has a cross-sectional shape that is reduced stepwise on the way to the tip, and the height also becomes gradually lower toward the tip side.

[0034] In this way, the reduced portion R at one end of the sheet fixing frame 1 is as shown in FIG. 6 1, the cross-sectional shape is reduced compared to other parts of the sheet fixing frame 1, so that it can be inserted and fitted into the groove 5 at the other end of the other adjacent sheet fixing frame 1. Since the upper sides of the rising parts 3b, 4b of the side pieces 3, 4 are bent and molded as described above, the protruding parts 3c, 4c provided at the tips of the side pieces 3, 4 in the reduced part R are positioned inside the groove 5, so that when the reduced part R is inserted into the other end of the other sheet fixing frame 1, it does not interfere with the protruding parts 3c, 4c at the other end of the other sheet fixing frame 1, and enters inside the protruding parts 3c, 4c, so that the reduced part R can be easily inserted into the other end of the other sheet fixing frame 1.

[0035] In addition, the reduced section R of the sheet fixing frame 1 in this embodiment is formed in two stages with a reduced cross-sectional shape at the tip end compared to the base end, making it easier to insert it into another sheet fixing frame 1 and reducing the construction burden on workers constructing the vinyl greenhouse H.

[0036] In this way, the reduced portion R of one sheet fixing frame 1 can be fitted into the groove 5 at the other end of the other sheet fixing frame 1, so that by connecting multiple sheet fixing frames 1 in the required number depending on the length of the vinyl greenhouse H and connecting them to the pipes P of the vinyl greenhouse H, grooves 5 can be installed for fixing a continuous sheet S to the gable surface, roof surface, side surfaces, etc. of the vinyl greenhouse H.

[0037] In addition, chamfered portions 3d, 4d are provided at the ends of the protruding portions 3c, 4c provided at the ends of the side pieces 3, 4 in the reduced portion R, at the ends that face each other. In detail, the protruding portions 3c, 4c in the reduced portion R are gradually crushed toward the ends by swaging, and the cross sections are deformed so as to be compressed in the left-right direction in FIG. 1, and the chamfered portions 3d, 4d are provided at the ends that become one ends of the sheet fixing frame 1.

[0038] As shown in Fig. 2 and Fig. 6, the chamfered portions 3d, 4d are formed by obliquely cutting the bottom piece 2 side, which is the lower side in the figure, of the tip portions of the protrusions 3c, 4c that are crushed in the left-right direction in Fig. 2 by swaging, on the groove 5 side facing each other. That is, in this case, the chamfered portions 3d, 4d are provided so as to cut out the portion including the edge (edge) E of the lower end portion inside the groove 5 on the end face in the extension direction of the protrusions 3c, 4c, as shown by the broken line in Fig. 9. Since the chamfered portions 3d, 4d are provided on the protrusions 3c, 4c in this way, the sharp edge E on the groove 5 side and the bottom piece 2 side on the end face of the end of the protrusions 3c, 4c is removed. Note that when the cross section of the protrusions 3c, 4c is circular, the chamfered portions 3d, 4d may be provided on the end of the protrusions 3c, 4c on the groove 5 side facing each other and the bottom piece 2 side. By providing chamfered portions 3d, 4d in the above-mentioned portions of the protrusions 3c, 4c, the sharp edges E on the groove 5 side and the bottom piece 2 side of the end faces of the protrusions 3c, 4c are removed, so that the sheet S inserted into one end portion of the sheet fixing frame 1 does not abut against the edges E.

[0039] In the sheet fixing frame 1 of this embodiment, the chamfered portions 3d, 4d are provided over almost the entire protrusions 3c, 4c, but it is sufficient that they are provided in a manner that allows the edges E of the protrusions 3c, 4c to be removed.

[0040] 10 and 11, the chamfered portions 3d and 4d are formed by aligning the ends of the protruding portions 3c and 4c in the reduced portion R at one end of the sheet fixing frame 1 perpendicular to the bottom piece 2. And viewed from a vertical direction to the bottom piece Alternatively, the chamfered portions 3d, 4d may have a shape formed by cutting off at an angle. In this case, too, the edge E on the groove 5 side and bottom piece 2 side at the end of the protrusions 3c, 4c is cut off. Furthermore, the chamfered portions 3d, 4d may be formed as a spherical or curved surface that bulges toward the groove 5 side, so long as the edge E can be removed from the protrusions 3c, 4c. The chamfered portions 3d, 4d are installed so that the range and shape provided for the protrusions 3c, 4c of the left and right side pieces 3, 4 are symmetrical, but so long as the edge E can be removed from the protrusions 3c, 4c, the range and shape of the left and right protrusions 3c, 4c are symmetrical. name It is acceptable for them to be different.

[0041] As described above, the sheet fixing frame 1 configured in this manner is connected to the adjacent sheet fixing frame 1 by inserting the reduced portion R at one end side of the other sheet fixing frame 1 into the groove 5 at the other end side of the other sheet fixing frame 1, and is then connected to the pipe P of the vinyl greenhouse H.

[0042] To fix the sheet S on the sheet fixing frame 1 thus constructed, the following procedure is followed. First, the sheet S is inserted into the groove 5 of the sheet fixing frame 1, and then, in order to hold the sheet S, the retaining member 6 is inserted into the groove 5 from above the sheet S. The retaining member 6 is as shown in FIG. 7As shown in Fig. 1, the retaining material 6 is made of a corrugated elastic wire material, and when a compressive force is applied in the width direction, it rebounds and generates a resilient force. Therefore, when the retaining material 6 is inserted into the groove 5 while being elastically deformed from above the sheet S, the retaining material 6 is compressed between the side pieces 3 and 4, generating a resilient force that presses the sheet S against the side pieces 3 and 4, and firmly fixes the sheet S to the sheet fixing frame 1. Since the retaining material 6 is accommodated between the curved side portions 3a and 4a of the side pieces 3 and 4, which are the widest in the groove 5, the retaining material 6 is prevented from falling out of the groove 5 even if a tension is applied to the sheet S and a force compressing it in the width direction is applied.

[0043] In addition, when another sheet is to be stacked and fixed in the groove 5 of the sheet fixing frame 1 to which the sheet S has been fixed in this way, the sheet to be fixed is inserted into the groove 5 from above the fastening material 6 that has fixed the sheet S, and another fastening material 6 is inserted into the groove 5 from above the other sheet. The other fastening material 6 is accommodated in a state compressed in the width direction between the rising parts 3b and 4b of the side pieces 3 and 4, but since the width W1 between the protruding parts 3c and 4c is narrower than the width between the rising parts 3b and 4b of the groove 5, the fastening material 6 is maintained in a state accommodated in the groove 5. In this way, a plurality of sheets S can be fixed to the sheet fixing frame 1. The fastening material 6 may be a part other than the corrugated wire material described above, as long as it can press the sheet S against the side pieces 3 and 4 in the groove 5 to fix the sheet S to the sheet fixing frame 1.

[0044] When the sheet S is fixed to the sheet fixing frame 1 in this way, in the reduced portion R where the sheet fixing frames 1 are joined, the cross-sectional shape is reduced so that the volume of the groove 5 is smaller than that of the other portions of the sheet fixing frame 1 other than the reduced portion R, but since the chamfered portions 3d, 4d are provided on the tips of the protruding portions 3c, 4c at the ends of the reduced portion R, which are on the groove 5 side and the bottom piece 2 side, the sheet S comes into contact with the chamfered portions 3d, 4d but does not come into contact with the sharp edges E that have been removed by providing the chamfered portions 3d, 4d. Therefore, even if the sheet S vibrates against the sheet fixing frame 1 due to wind or the like during the fixing operation of the sheet S to the sheet fixing frame 1 or after the sheet S is fixed to the sheet fixing frame 1, the sheet S can be prevented from being damaged.

[0045] Thus, the sheet fixing frame 1 of this embodiment has a bottom piece 2 and a pair of side pieces 3, 4 standing up from both ends of the bottom piece 2, and forms a groove 5 between the bottom piece 2 and each side piece 3, 4 with an opening width W1 narrower than the width W2 of the bottom piece 2 side, and fixes the sheet S inserted into the groove 5 with a stopper 6 inserted into the groove 5, and each side piece 3, 4 has protruding parts 3c, 4c protruding toward the groove 5 side at the tip opposite the bottom piece 2, and each protruding part 3c, 4c has chamfered parts 3d, 4d at the tip parts facing each other at at least one end in the extension direction of the sheet fixing frame 1. According to the sheet fixing frame 1 configured in this manner, the contact of the end faces of the protruding parts 3c, 4c with the sharp edge E is eliminated by the chamfered parts 3d, 4d, so that the sheet S fixed in the groove 5 does not come into contact with the sharp edge. E Since the sheet S does not come into contact with the metal, deterioration of the sheet S can be suppressed.

[0046] It is preferable that the length of the chamfered portions 3d, 4d from the ends of the protruding portions 3c, 4c be as long as possible in the extension direction of the sheet fixing frame 1. When the chamfered portions 3d, 4d are formed on a flat surface, as shown in Fig. 9, the angle θ of the intersection point C between the end of the chamfered portion 3d, 4d and the surface of the protruding portion 3c, 4c on the groove 5 side becomes larger as the length of the chamfered portions 3d, 4d becomes longer, so that deterioration of the sheet S can be prevented at the intersection point C.

[0047] In addition, the chamfered portions 3d, 4d in the sheet fixing frame 1 of this embodiment are formed so as to cut off the bottom piece 2 side of the tip portion of each protrusion 3c, 4c. According to the sheet fixing frame 1 configured in this manner, the chamfered portions 3d, 4d are not provided on the opposite bottom side, which is the upper end side of the protrusions 3c, 4c, so that the edges of the chamfered portions 3d, 4d are not formed on the opposite bottom side of the protrusions 3c, 4c. Therefore, when a large tension acts on the sheet S fixed to the sheet fixing frame 1, it is possible to prevent the sheet S from being strongly pressed against the edges of the chamfered portions 3d, 4d by receiving the force from the sheet S at the upper end side of the protrusions 3c, 4c, so that deterioration of the sheet S can be more effectively prevented.

[0048] Furthermore, one end of the sheet fixing frame 1 of this embodiment has a reduced portion R which is reduced in cross section compared to other portions by shrink molding, and chamfered portions 3d, 4d are formed on the protruding portions 3c, 4c at the tip of the reduced portion R. According to the sheet fixing frame 1 configured in this manner, since it is provided with the reduced portion R, it is possible to connect the sheet fixing frames 1 to each other by inserting the reduced portion R into the groove 5 at the other end of another adjacent sheet fixing frame 1, and deterioration of the sheet S can be effectively suppressed even in the reduced portion R portion where the volume of the groove 5 is narrower than in other portions of the sheet fixing frame 1 and the sheet S is more likely to be subjected to a large tension.

[0049] Moreover, the height of the reduced portion R in the sheet fixing frame 1 of this embodiment becomes lower toward one end, and the height of the end of the reduced portion R is lower than the height of the groove 5 at the other end of the sheet fixing frame 1. According to the sheet fixing frame 1 configured in this manner, the height of the protruding portions 3c, 4c of the reduced portion R is lower than the height of the protruding portions 3c, 4c at the other end of the other sheet fixing frame 1 to which the end of the reduced portion R at one end of the sheet fixing frame 1 is connected, so that the sheet S is less likely to come into contact with the end faces of the protruding portions 3c, 4c of the reduced portion R, and deterioration of the sheet S can be effectively suppressed when the sheet S vibrates or when a large tension is applied to the sheet S.

[0050] Furthermore, the reduced portion R in the sheet fixing frame 1 of this embodiment is reduced in two stages. destination Since the cross section of the end side is reduced compared to the base end side, when connecting the sheet fixing frames 1 to each other, the reduced portion R of Since it becomes easy to insert the other sheet fixing frame 1 into the other end, the construction burden on the construction workers of the vinyl greenhouse H can be reduced.

[0051] In the above description, the reduced portion R is provided at one end of the sheet fixing frame 1, and the chamfered portions 3d, 4d are provided at the protruding portions 3c, 4c at the reduced portion R. However, the chamfered portions 4d, 4d may be provided at the protruding portions 3c, 4c at the other end of the sheet fixing frame 1, or the sheet fixing frame 1 may be provided with the chamfered portions 4d, 4d. ofAlternatively, the reduced portion R may not be provided on either end, and the chamfered portions 3d, 4d may be provided on the protruding portions 3c, 4c at one end or both ends of the sheet fixing frame 1. of It is also possible to provide the reduction portion R at both ends and then provide chamfered portions 3d, 4d at the protruding portions 3c, 4c at one end or both ends of the sheet fixing frame 1. Furthermore, since the sheet S may come into direct contact with the end faces of the protruding portions 3c, 4c in the sheet fixing frame 1 arranged at the end of the vinyl greenhouse H, deterioration of the sheet S can be similarly prevented by providing chamfered portions 3d, 4d at the end of the sheet fixing frame 1 other than the reduction portion R instead of or in addition to the end of the reduction portion R of the sheet fixing frame 1.

[0052] The sheet fixing frame 1 may be formed by roll-molding a strip of plate material, or by drawing or extrusion when a soft metal material such as aluminum is used as the base material. In addition, when the sheet fixing frame 1 is roll-molded, the chamfered portions 3d, 4d may be formed by processing the ends of the plate material in advance so that the chamfered portions 3d, 4d can be formed, and then the sheet fixing frame 1 is roll-molded. Alternatively, the sheet fixing frame 1 may be processed so that the chamfered portions are formed when one end of the sheet fixing frame 1 is swaged in advance after the basic shape of the sheet fixing frame 1 is obtained by roll molding. Furthermore, the reduced portion of the sheet fixing frame 1 may be formed by processing the edges of the plate material in advance so that the chamfered portions 3d, 4d can be formed, or the sheet fixing frame 1 may be processed so that the chamfered portions are formed when the edges of the plate material are swaged in advance. R After the molding, the protruding parts 3c, 4c may be cut or polished to form the chamfered parts 3d, 4d. In addition, when the sheet-fixing frame 1 is subjected to a drawing process, the protruding parts 3c, 4c may be cut or polished to form the chamfered parts 3d, 4d after the basic shape of the sheet-fixing frame 1 is obtained by drawing.

[0053] In addition, if you want to strengthen the connection between the sheet fixing frames 1 when connecting the sheet fixing frames 1 by inserting the reduced portion R of one sheet fixing frame 1 into the groove 5 at the other end of the other sheet fixing frame 1, you can do so as follows.

[0054] As shown in Fig. 12, a one-end locking projection 2f protruding toward the opposite side to the groove 5 may be provided in the center 2b of the bottom piece 2 in the reduced portion R at one end of the sheet fixing frame 1, and an other-end hole 2g may be provided in the center 2b at the other end of the sheet fixing frame 1. In the sheet fixing frame 1 configured in this manner, when the reduced portion R of one sheet fixing frame 1 is inserted all the way into the groove 5 at the other end of the other sheet fixing frame 1, the one-end locking projection 2f enters the other-end hole 2g to prevent it from coming out, and the sheet fixing frames 1 can be firmly connected to each other. Although not shown in the figure, when a one-end hole is provided in the center 2b of the bottom piece 2 in the reduced portion R at one end of the sheet fixing frame 1, an other-end locking projection protruding toward the groove 5 may be provided in the center 2b at the other end of the sheet fixing frame 1. Even when the seat fixing frames 1 are configured in this manner, when the reduced portion R of one seat fixing frame 1 is inserted all the way into the groove 5 at the other end of the other seat fixing frame 1, the other end locking projection enters the one end hole to prevent it from coming out, thereby firmly connecting the seat fixing frames 1. The one end locking projection 2f and the other end locking projection may be formed by pressing, or may be formed by cutting out the installation portion.

[0055] Although the embodiment of the present invention has been described above, modifications, variations, and changes can be made without departing from the scope of the claims. [Explanation of symbols]

[0056] 1 Sheet fixing frame, 2 Bottom piece, 2f One end locking projection, 2g Other end hole, 3, 4 Side pieces, 3c, 4c Protruding parts, 3d, 4d Chamfered parts, 5 Groove, 6 Stopper, R Reduced part, S Sheet

Claims

1. A sheet fixing frame having a bottom piece and a pair of side pieces standing up from both ends of the bottom piece, forming a groove between the bottom piece and each of the side pieces, the width of the opening of which is narrower than the width of the bottom piece, and fixing a sheet inserted into the groove by a retaining member inserted into the groove, Each of the side pieces has a protruding portion protruding toward the groove side at a tip end opposite to the bottom piece, The protrusions each have a chamfered portion at a tip portion facing each other at at least one end in an extension direction of the sheet fixing frame, When the bottom side is the lower side and the opposite bottom side is the upper side, the chamfered portion is formed by cutting off the tip portion obliquely from the upper end of the end face of one end side of the protrusion to the lower end of the protrusion as viewed from the groove side. A sheet fixing frame.

2. A sheet fixing frame having a bottom piece and a pair of side pieces standing up from both ends of the bottom piece, forming a groove between the bottom piece and each of the side pieces, the width of the opening of which is narrower than the width of the bottom piece, and fixing a sheet inserted into the groove by a retaining member inserted into the groove, Each of the side pieces has a protruding portion protruding toward the groove side at a tip end opposite to the bottom piece, the protrusions each have a chamfered portion at a tip portion facing each other at at least one end in an extension direction of the sheet fixing frame, The chamfered portion is formed by cutting off a tip side of one end of the protruding portion perpendicular to the bottom piece and obliquely viewed from a direction perpendicular to the bottom piece. A sheet fixing frame.

3. One end of the sheet fixing frame has a reduced portion that is reduced in cross section compared to the other portion by reduction molding, and the chamfered portion is formed on each of the protruding portions at the tip of the reduced portion.

3. The sheet fixing frame according to claim 1 or 2.

4. The height of the reduction portion becomes lower toward one end of the sheet fixing frame, The height of the end of the contracted portion is lower than the height of the groove at the other end of the sheet fixing frame.

4. The sheet fixing frame according to claim 3.

5. The reduced portion is formed in two stages, and the cross section of the tip side is reduced more than that of the base side.

5. The sheet fixing frame according to claim 3 or 4.

6. the bottom piece of the reduced portion has one of a one-end locking projection and a one-end hole projecting toward the opposite side to the groove side, The bottom piece at the other end opposite to the one end of the sheet fixing frame has an other end hole when the bottom piece at the reduced portion has the one end locking projection, and has an other end locking projection protruding toward the groove when the bottom piece at the reduced portion has the one end hole.

6. A sheet fixing frame according to claim 3, wherein the sheet fixing frame is a sheet fixing member.

Images