Sheet fixing fastener, sheet fixing structure, and sheet fixing method

Abstract

To provide a sheet fixing fastener capable of easily fixing a sheet on a frame, a sheet fixing structure, and a sheet fixing method.SOLUTION: A sheet fixing fastener 10 includes: a body part 11 which is formed in a curved shape and can be elastically bent; a first engagement part 12 which is formed on one edge part of a curved direction of the body part 11 and can engage with a first attachment groove 27 of a frame material 21; and a second engagement part 13 which is formed on the other edge part of the curved direction of the body part 11 and can engage with a second attachment groove 18 of the frame material 21 by pinching a sheet S. The first engagement part 12 and the second engagement part 13 elastically engage with the first attachment groove 27 and the second attachment groove 28 by an elastic restore force of the elastically-bent body part 11.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a sheet fixing fastener, a sheet fixing structure, and a sheet fixing method for fixing a flexible sheet to a frame material. [Background technology]

[0002] For example, the assembly of precision machinery must be carried out in a clean environment that is sterilized and dust-free, and a clean booth may be used to achieve such an environment. Clean booths are often installed indoors in buildings, and can be easily installed inside the room. In some cases, a flexible sheet such as a vinyl curtain is used as a partition wall to separate the inside and outside of the clean booth (see, for example, Patent Document 1). When such a sheet is fixed to a clean booth, for example, the sheet is fixed to the frame material that constitutes the framework of the clean booth with a flat bar or with a double-sided adhesive tape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-336798 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when fixing a sheet to a frame material with a flat bar, the sheet is pressed against the frame material by the flat bar, which requires fastening materials such as screws to fix the flat bar to the frame material, and there is the problem that fixing the flat bar to the frame material using the fastening materials is time-consuming. Furthermore, when fixing a sheet to a frame material with double-sided adhesive tape, it is necessary to first attach one side of the double-sided adhesive tape to the frame material or sheet, and then attach the other side to the sheet or frame material, which results in the problem that if the attachment fails, it will be time-consuming to redo it.

[0005] The present invention has been made in consideration of the above circumstances, and has an object to provide a sheet fixing fastener, a sheet fixing structure, and a sheet fixing method that can easily fix a sheet to a frame material. [Means for solving the problem]

[0006] In order to achieve the above object, a sheet-fixing fastener according to the present invention is a sheet-fixing fastener for fixing a flexible sheet to a frame material having a first mounting groove and a second mounting groove spaced apart from each other in parallel, comprising: A main body portion formed in a curved plate shape and capable of elastically bending; a first engagement portion formed on one edge portion in a curved direction of the main body portion and capable of engaging with the first mounting groove; a second engagement portion formed on another edge portion of the main body portion in the curved direction and capable of engaging the sheet by sandwiching it in the second mounting groove; The first engagement portion and the second engagement portion are characterized in that they elastically engage with the first mounting groove and the second mounting groove by an elastic restoring force of the main body portion that is elastically bent.

[0007] In the present invention, the second engagement portion of the sheet fixing fastener is engaged with the second mounting groove of the frame material with the sheet sandwiched therebetween, then the first engagement portion of the sheet fixing fastener is engaged with the first mounting groove while the main body of the sheet fixing fastener is elastically deflected, and the first engagement portion and the second engagement portion elastically engage with the first mounting groove and the second mounting groove due to the elastic restoring force of the main body, thereby pressing and fixing the sheet to the second mounting groove. Therefore, the sheet can be easily fixed to the frame material without using a conventional flat bar, double-sided adhesive tape, etc.

[0008] In the above-described configuration of the present invention, a grip portion may be formed on one edge of the main body portion on the opposite side to the first engagement portion.

[0009] With this configuration, the gripping portion of the sheet fixing fastener is gripped and the second engagement portion is engaged with the second mounting groove, and then the main body portion of the sheet fixing fastener is elastically bent so that the elastic return force of the main body portion causes the first engagement portion and the second engagement portion to elastically engage with the first mounting groove and the second mounting groove, thereby easily pressing and fixing the sheet into the second mounting groove.

[0010] The seat fixing structure according to the present invention is a seat fixing structure in which a seat is fixed to a frame material by the seat fixing fastener, The frame member has a first mounting groove and a second mounting groove that are spaced apart from each other in parallel, The first engagement portion of the sheet-fixing fastener is engaged with the first mounting groove, The second engagement portion of the sheet-fixing fastener is engaged with the second mounting groove while sandwiching the sheet, The sheet is characterized in that the first engagement portion and the second engagement portion elastically engage with the first mounting groove and the second mounting groove due to the elastic return force of the elastically bent main body portion, thereby pressing and fixing the sheet to the second mounting groove of the frame material.

[0011] In the present invention, the first engagement portion of the sheet fixing fastener engages with the first mounting groove, and the second engagement portion of the sheet fixing fastener engages with the second mounting groove while sandwiching the sheet, and the first engagement portion and the second engagement portion elastically engage with the first mounting groove and the second mounting groove due to the elastic restoring force of the elastically bent main body portion, thereby pressing and fixing the sheet into the second mounting groove, so that the sheet can be easily fixed to the frame material without using conventional flat bars, double-sided adhesive tape, etc.

[0012] The sheet fixing method according to the present invention is a sheet fixing method for fixing a sheet to a frame material by the sheet fixing fastener, The frame member has a first mounting groove and a second mounting groove that are spaced apart from each other in parallel, First, the gripping portion of the sheet fixing fastener is gripped, and the second engaging portion of the sheet fixing fastener is engaged with the second mounting groove by sandwiching the sheet while elastically bending the main body portion of the sheet fixing fastener; Next, by releasing the gripping portion, the elastic return force of the main body portion causes the first engagement portion and the second engagement portion to elastically engage with the first mounting groove and the second mounting groove, thereby pressing and fixing the sheet into the second mounting groove of the frame material.

[0013] Here, when the second engagement portion of the sheet fixing fastener is engaged with the second mounting groove by sandwiching the sheet and elastically bending the main body of the sheet fixing fastener, it is preferable to push the sheet into the second mounting groove beforehand. In this case, the sheet may be pushed into the second mounting groove by hand, or may be pushed in using the sheet fixing fastener. When pushing in using the sheet fixing fastener, the gripping portion of the sheet fixing fastener is gripped by hand, and the second engagement portion is pushed into the second mounting groove from above the sheet.

[0014] In the present invention, the gripping portion of the sheet fixing fastener is gripped, the second engagement portion of the sheet fixing fastener is engaged with the second mounting groove across the sheet while elastically bending the main body of the sheet fixing fastener, and then the gripping portion is released, whereby the first engagement portion and the second engagement portion elastically engage with the first mounting groove and the second mounting groove due to the elastic restoring force of the main body, thereby pressing and fixing the sheet to the second mounting groove of the frame material. Therefore, the sheet can be easily fixed to the frame material without using a conventional flat bar, double-sided adhesive tape, etc. In addition, by gripping the gripping portion of the sheet fixing fastener, the main body portion of the sheet fixing fastener can be easily elastically bent, thereby allowing the second engagement portion to easily elastically engage with the second mounting groove by sandwiching the sheet. Effect of the Invention

[0015] According to the present invention, a sheet can be easily fixed to a frame material without using a flat bar, double-sided adhesive tape, or the like. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view of a sheet-fixing fastener according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of the seat fixing fastener of the same embodiment. [Diagram 3] FIG. 11 is a front view of the clean booth in which a sheet is fixed using a sheet fixing fastener. [Figure 4] FIG. 4 is a cross-sectional view showing the seat fixing structure according to the first embodiment. [Diagram 5] FIG. 11 is a diagram for explaining a method of fixing a sheet, where (a) is a cross-sectional view showing a sheet placed on a frame material, (b) is a cross-sectional view showing an upper edge of the sheet being pressed into a second mounting groove of the frame material, (c) is a cross-sectional view showing a sheet fixing fastener being assembled to the frame material, (d) is a cross-sectional view showing a sheet fixing fastener assembled to the frame material, and (e) is a cross-sectional view showing an upper edge of the sheet fixed to the frame material by the sheet fixing fastener. [Figure 6] FIG. 11 is a perspective view of a sheet-fixing fastener according to a second embodiment of the present invention. [Figure 7] FIG. 2 is a cross-sectional view of the seat fixing fastener of the same embodiment. [Figure 8] FIG. 11 is a perspective view of a sheet-fixing fastener according to a third embodiment of the present invention. [Figure 9] FIG. 2 is a cross-sectional view of the seat fixing fastener of the same embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. (First embodiment) Fig. 1 shows a sheet fixing fastener according to the first embodiment, and is a perspective view, Fig. 2 shows a cross-sectional view of the same, Fig. 3 shows a front view of a clean booth to which a sheet is fixed by the sheet fixing fastener, Fig. 4 shows a cross-sectional view of the sheet fixing structure, and Fig. 5 shows a diagram for explaining the sheet fixing method. In this embodiment, the sheet is a transparent vinyl curtain.

[0018] As shown in Figures 1 to 3, the sheet fixing fastener 10 of this embodiment is integrally formed from a resin such as ABS resin, and includes a main body portion 11, a first engagement portion 12, a second engagement portion 13, and a grip portion 14.

[0019] The main body 11 is formed in the shape of a curved plate that is curved in an arc shape. The main body 11 is elastically flexible. That is, the main body 11 is elastically bendable so that the first engagement portion 12 and the second engagement portion 13 approach each other. Also, the main body 11 is configured to return to its original shape (the shape shown in FIG. 2) from the elastically bent state by an elastic restoring force so that the first engagement portion 12 and the second engagement portion 13 move away from each other. Also, the tip of the second engagement portion 13 protrudes from the tip of the first engagement portion 12 to the opposite side to the main body 11 (the left side in FIGS. 1 and 2).

[0020] A first engagement portion 12 is formed integrally with the main body portion 11 at one edge portion in the curved direction of the main body portion 11 (the upper edge portion in Figs. 1 and 2). Specifically, a flat plate-like portion 15 is formed integrally with the main body portion 11 at one edge (upper edge) of the main body portion 11, and a first engagement portion 12 is formed integrally with the plate-like portion 15 at a tip edge along the long side direction of the plate-like portion 15. The first engagement portion 12 has a front side portion 12a located forward (left side in Figs. 1 and 2) from half the width direction of the plate-like portion 15, and a protruding portion 12b with a substantially triangular cross section formed and protruding upward from the tip of the front side portion 12a, and an upper end portion of the protruding portion 12b is formed in a circular arc cross section. The protruding portion 12b is formed extending along the long side direction of the plate-like portion 15.

[0021] In addition, the second engagement portion 13 is formed integrally with the main body portion 11 at the other edge portion (lower edge portion in Figs. 1 and 2) in the curved direction of the main body portion 11. This second engagement portion 13 has a flat plate-like plate portion 13a formed integrally with the main body portion 11 at the other edge portion (lower edge portion) of the main body portion 11 and parallel to the plate-like portion 15, and a protrusion portion 13b formed integrally with the plate-like portion 13a and protruding downward on the lower surface of the widthwise center portion of the plate-like portion 13a, and the lower end portion of the protrusion portion 13b is formed into a substantially arc-shaped cross section. In addition, the protrusion portion 13b is formed extending along the long side direction of the plate-like portion 13a.

[0022] A gripping portion 14 is formed on one edge of the main body 11 on the opposite side to the first engagement portion 12. The gripping portion 14 has a rear side portion 14a located rearward (on the right side in Figs. 1 and 2) from the halfway point in the width direction of the plate-like portion 15, and a protrusion 14b protruding upward from the end of the rear side portion 14a, and the tip of the protrusion 14b is formed into a substantially arc-shaped cross section. The protrusion 14b is formed to extend along the long side direction of the plate-like portion 15.

[0023] The sheet-fixing fastener 10 having such a configuration is used when fixing a sheet S, which is a flexible, transparent vinyl curtain, to a clean booth 20, as shown in FIG. The clean booth 20 of this embodiment includes a rectangular or cubic clean booth framework 23 composed of four horizontally arranged frame members 21 and four vertically arranged supports 22, and a flexible sheet S provided so as to cover the front side, rear side, and both left and right side sides of the clean booth framework 23. The frame members 21 and supports 22 constituting the clean booth framework 23 are made of metal such as aluminum.

[0024] The frame material 21 is assembled into a rectangular shape on the ceiling of the clean booth framework 23 to form a rectangular frame body 21A. A ceiling is provided inside the frame body 21A, and an air conditioner 25 such as a fan filter unit is provided on this ceiling. The upper ends of pillars 22 are fixed to the four corners of frame 21A, and legs 22a for placing clean booth 20 on the floor are fixed to the lower ends of pillars 22. In addition, the joints between the upper ends of pillars 22 and the ends of frame material 21 are reinforced by reinforcing members 26.

[0025] The frame material 21 constituting the frame body 21A is formed to have a generally rectangular cross section as shown in FIG. 4, and has a first mounting groove 27 and a second mounting groove 28 spaced apart and parallel to each other on each side surface. The first mounting groove 27 is a mounting groove with which the first engagement portion 12 of the sheet fastening fastener 10 can engage, and the second mounting groove 28 is a mounting groove with which the second engagement portion 13 of the sheet fastening fastener 10 can engage.

[0026] The first mounting groove 27 and the second mounting groove 28 have the same cross-sectional shape, and depending on the arrangement of the frame material 21, of the mounting grooves arranged above and below, the upper mounting groove becomes the first mounting groove 27, and the lower mounting groove becomes the second mounting groove 28. For example, as shown in FIG. 4, when the frame material 21 is arranged with one side surface of the frame material 21 (the right side surface in FIG. 4) facing the front side of the clean booth 20 (see FIG. 3), the upper mounting groove on one side surface of the frame material 21 becomes the first mounting groove 27, and the lower mounting groove becomes the second mounting groove 28.

[0027] In this way, the cross-sectional shape of the frame material 21 is point symmetrical, so whichever of the four side surfaces is placed facing the front side of the clean booth 20, the first mounting groove 27 is placed on the upper side and the second mounting groove 28 is placed on the lower side on the front side. Similarly, in the frame materials 21 placed on the rear side and both side surfaces of the clean booth 20, the first mounting groove 27 is placed on the upper side and the second mounting groove 28 is placed on the lower side.

[0028] The first mounting groove 27 has a recessed groove 27a with which the protruding portion 12b of the first engagement portion 12 of the sheet-fixing fastener 10 engages. The recessed groove 27a is formed on the upper inner surface of the inner surfaces facing above and below of the first mounting groove 27, and extends in the longitudinal direction of the frame material 21. A flat opening surface 27b is formed on the upper surface of the entrance of the first mounting groove 27, and this opening surface 27b extends in the longitudinal direction of the frame material 21. When the first engagement portion 12 is engaged with the first mounting groove 27, the convex portion 12b of the first engagement portion 12 engages with the concave groove 27a of the first mounting groove 27, and the front portion 12a of the first engagement portion 12 abuts against the opening surface 27b of the first mounting groove 27.

[0029] The second mounting groove 28 has a recessed groove 28a with which the protruding portion 13b of the second engaging portion 13 of the sheet-fixing fastener 10 engages. The recessed groove 28a is formed on the lower inner surface of the inner surfaces facing above and below of the second mounting groove 28, and extends in the longitudinal direction of the frame material 21. In addition, a flat opening surface 28b is formed on the lower surface of the entrance of the second mounting groove 28, and this opening surface 28b extends in the longitudinal direction of the frame material 21.

[0030] When the second engagement portion 13 is engaged with the second mounting groove 28, the convex portion 13b of the second engagement portion 13 engages with the concave groove 28a of the second mounting groove 28, and the plate-shaped portion 13a of the second engagement portion 12 abuts against the opening surface 28b of the second mounting groove 28. In this state, the second engagement portion 13 is engaged with the second mounting groove 13 with the sheet S sandwiched therebetween. In addition, the first engagement portion 12 and the second engagement portion 13 elastically engage with the first mounting groove 27 and the second mounting groove 28 due to the elastic return force of the elastically bent main body portion 11, so that the upper edge portion of the sheet S is pressed and fixed into the second mounting groove 28.

[0031] The vertical edges of the sheet S are fixed to the supports 22 of the clean booth 20 by adhesive or the like. Although not shown in the figures, a decorative cover is removably attached to the frame material 21, and this decorative cover covers the first mounting groove 27, the second mounting groove 28 and the sheet fixing fastener 10.

[0032] In addition, in this embodiment, as shown in Figure 3, five sheet fixing fasteners 10 are used to fix the sheet S to the frame material 21 on the front side of the clean booth 20. However, since the length of the frame material 21 varies depending on the shape and size of the clean booth 20, an appropriate number of sheet fixing fasteners 10 are used to fix the sheet S according to the length of the frame material 21.

[0033] Next, a method for fixing the sheet S to the frame material 21 by the sheet fixing fastener 10 will be described. In this embodiment, a method for fixing the upper edge portion of the sheet S to the frame material 21 located on the front side of the clean booth 20 shown in Fig. 3 will be described as an example. Note that the upper edge portions of the sheet S are also fixed to the frame materials 21 located on the rear side and both left and right side sides of the clean booth 20 in the same manner.

[0034] The frame material 21 has a first mounting groove 27 and a second mounting groove 28 which are spaced apart and parallel to each other above and below. First, as shown in Fig. 5(a), the sheet S is placed on the frame material 21 so as to cover the entrance of the second mounting groove 28. In this case, the sheet S is placed so that the upper edge of the sheet S extends to the front of the first mounting groove 27. Since the upper edge portion of the sheet S will be inserted into the second mounting groove 28 in the next step, the upper edge of the sheet S is placed above the second mounting groove 28 taking this into account.

[0035] Next, as shown in Fig. 5(b), the upper edge of the sheet S is pushed into the second mounting groove 28. In this case, the upper edge of the sheet S may be pushed into the second mounting groove 28 by hand, or may be pushed in using the sheet fixing fastener 10. When pushing in using the sheet fixing fastener 10, the gripping portion 14 of the sheet fixing fastener 10 is grasped by hand, and the second engagement portion 13 is pushed into the second mounting groove 28 from above the sheet S.

[0036] Next, as shown in Fig. 5(c), the gripping portion 14 of the sheet fixing fastener 10 is grasped by hand and tilted clockwise to insert the second engagement portion 13 into the second mounting groove 28, and then, as shown in Fig. 5(d), the second engagement portion 13 is engaged with the second mounting groove 28, sandwiching the sheet S, while elastically bending the main body portion 11 of the sheet fixing fastener 10. At this time, the convex portion 13b of the second engagement portion 13 engages with the concave groove 28a of the second engagement portion 28, and the plate-like portion 13a abuts against the opening surface 28b. Moreover, the first engagement portion 12 engages with the first attachment groove 27 as a result of the main body portion 11 being elastically bent.

[0037] Next, as shown in Figure 5(e), by releasing the gripping portion 14 of the sheet fixing fastener 10, the first engagement portion 12 and the second engagement portion 13 elastically engage with the first mounting groove 27 and the second mounting groove 28 due to the elastic restoring force of the main body portion 11. At this time, the convex portion 12b of the first engagement portion 12 elastically engages with the concave groove 27a of the first mounting groove 27, the front side portion 12a of the first engagement portion 12 elastically abuts against the opening surface 27b of the first mounting groove 27, while the convex portion 13b of the second engagement portion 13 elastically engages with the concave groove 28a of the second mounting groove 28, and the plate-shaped portion 13a of the second engagement portion 13 elastically abuts against the opening surface 28b of the second mounting groove 28, so that the sheet S is sandwiched between the second engagement portion 13, the concave groove 27a, and the opening surface 28b. As a result, the upper edge portion of the sheet S is pressed and fixed to the second mounting groove 28 of the frame material 21.

[0038] As described above, according to this embodiment, the sheet fixing fastener 10 includes an elastically flexible main body 11, a first engagement portion 12 engageable with the first mounting groove 27 of the frame material 21, and a second engagement portion 13 engageable with the second mounting groove 28 by sandwiching the sheet S therebetween, so that the second engagement portion 13 of the sheet fixing fastener 10 is engaged with the second mounting groove 28 by sandwiching the sheet S therebetween, and then the first engagement portion 12 is engaged with the first mounting groove 27 while the main body 11 of the sheet fixing fastener 10 is elastically bent, and the first engagement portion 12 and the second engagement portion 13 are elastically engaged with the first mounting groove 27 and the second mounting groove 28 by the elastic restoring force of the main body 11, thereby pressing and fixing the sheet S to the second mounting groove 28. Therefore, the sheet can be easily fixed to the frame material 21 without using a conventional flat bar, double-sided adhesive tape, etc.

[0039] In addition, the sheet fixing fastener 10 is provided with a gripping portion 14 formed on one edge of the main body portion 11, opposite the first engagement portion 13. Therefore, by gripping the gripping portion 14 and engaging the second engagement portion 13 with the second mounting groove 28, the main body portion 11 is elastically bent, and the elastic return force of the main body portion 11 causes the first engagement portion 12 and the second engagement portion 13 to elastically engage with the first mounting groove 27 and the second mounting groove 28, thereby easily pressing and fixing the sheet S into the second mounting groove 28.

[0040] Second Embodiment FIG. 6 is a perspective view showing a sheet fastener according to a second embodiment, and FIG. 7 is a transverse sectional view of the same. The main differences between the sheet fastening fastener 30 of the second embodiment and the sheet fastening fastener 10 of the first embodiment are the height (the distance between the first engagement portion 12 and the second engagement portion 13) and the radius of curvature of the main body portion 11.

[0041] The fastener 30 for fastening to the sheet in the second embodiment is larger in both height and radius of curvature than the fastener 10 for fastening to the sheet in the first embodiment. Therefore, the sheet fixing fastener 30 of the second embodiment is used when the distance between the first mounting groove 27 and the second mounting groove of the frame material 21 that fixes the sheet S is longer than the distance between the first mounting groove 27 and the second mounting groove in the first embodiment.

[0042] Other configurations of the fastener 30 for fastening to the sheet of the second embodiment are similar to those of the fastener 10 for fastening to the sheet of the first embodiment, so the other configurations are given the same reference numerals and the description thereof is omitted. Furthermore, the seat fixing structure and seat fixing method using the seat fixing fastener 30 are similar to those in the first embodiment, so illustrations and explanations thereof will be omitted. It goes without saying that the second embodiment can provide the same effects as the first embodiment.

[0043] (Third embodiment) FIG. 8 is a perspective view showing a sheet fastener according to a third embodiment, and FIG. 9 is a cross-sectional view of the same. The main differences between the sheet fastening fastener 40 of the third embodiment and the sheet fastening fastener 30 of the second embodiment are the height (the distance between the first engagement portion 12 and the second engagement portion 13) and the radius of curvature of the main body portion 11.

[0044] The fastener 40 for fastening the sheet in the third embodiment is larger in both height and radius of curvature than the fastener 30 for fastening the sheet in the second embodiment. Therefore, the sheet fixing fastener 40 of the third embodiment is used when the distance between the first mounting groove 27 and the second mounting groove of the frame material 21 that fixes the sheet S is longer than the distance between the first mounting groove 27 and the second mounting groove in the second embodiment.

[0045] Since other configurations of the sheet fixing fastener 40 of the third embodiment are similar to those of the sheet fixing fastener 10 of the first embodiment and the sheet fixing fastener 30 of the second embodiment, the other configurations are given the same symbols and their descriptions are omitted. Furthermore, the seat fixing structure and the seat fixing method using the seat fixing fastener 40 are similar to those in the first and second embodiments, so illustrations and explanations thereof will be omitted. It goes without saying that the second embodiment also provides the same effects as the first and second embodiments.

[0046] In the first to third embodiments, the sheet fixing fastener, sheet fixing structure and sheet fixing method of the present invention have been described using the example of fixing a vinyl curtain (sheet) to a clean booth, but the present invention is not limited to this and can be applied to any device that fixes a flexible sheet to a rod-shaped frame material. [Explanation of symbols]

[0047] 10,30,40 Seat fixing fastener 11 Main body 12 First engagement portion 13 Second engagement portion 14 Gripping part 21 Frame material 27 First mounting groove 28 Second mounting groove S Seat

Claims

1. A sheet fixing fastener for fixing a flexible sheet to a frame material having a first mounting groove and a second mounting groove spaced apart in parallel, A main body portion formed in a curved plate shape and capable of elastically bending; a first engagement portion formed on one edge portion of the main body portion in a curved direction and capable of engaging with the first mounting groove; a second engagement portion formed on another edge portion of the main body portion in the curved direction and capable of engaging with the sheet by sandwiching it in the second attachment groove; A sheet fixing fastener characterized in that the first engagement portion and the second engagement portion elastically engage with the first mounting groove and the second mounting groove due to the elastic restoring force of the elastically bent main body portion.

2. The fastener for fastening a sheet according to claim 1, further comprising a gripping portion formed on one edge of the main body portion opposite the first engaging portion.

3. A sheet fixing structure in which a sheet is fixed to a frame material by the sheet fixing fastener according to claim 1, The frame member has a first mounting groove and a second mounting groove that are spaced apart from each other in parallel, The first engagement portion of the sheet-fixing fastener is engaged with the first mounting groove, The second engagement portion of the sheet-fixing fastener is engaged with the second mounting groove while sandwiching the sheet, A sheet fixing structure characterized in that the first engagement portion and the second engagement portion elastically engage with the first mounting groove and the second mounting groove due to the elastic return force of the elastically bent main body portion, thereby pressing and fixing the sheet into the second mounting groove of the frame material.

4. A sheet fixing method for fixing a sheet to a frame material by the sheet fixing fastener according to claim 2, comprising the steps of: The frame member has a first mounting groove and a second mounting groove that are spaced apart from each other in parallel, First, the gripping portion of the sheet fixing fastener is gripped, and the second engaging portion of the sheet fixing fastener is engaged with the second mounting groove by sandwiching the sheet while elastically bending the main body portion of the sheet fixing fastener; Next, by releasing the gripping portion, the first engagement portion and the second engagement portion elastically engage with the first mounting groove and the second mounting groove due to the elastic return force of the main body portion, thereby pressing and fixing the sheet into the second mounting groove of the frame material.

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