WO2015052845A1

WO2015052845A1 - Grommet and washer

Info

Publication number: WO2015052845A1
Application number: PCT/JP2013/077855
Authority: WO
Inventors: 栄二隅内; 良二難波; 中野　勝文
Original assignee: Ykk株式会社
Priority date: 2013-10-11
Filing date: 2013-10-11
Publication date: 2015-04-16
Also published as: JP6131329B2; CN105578921B; JPWO2015052845A1; CN105578921A

Abstract

　Provided is a grommet suitable for stretchable cloth or thin cloth, the grommet being unlikely to produce wrinkles in the cloth. The grommet is provided with: an eyelet (10, 30) having a cylindrical part (11) and a flange part (12) that extends radially outward from one end of the cylindrical part (11); and an annular washer (20) guided over the cylindrical part (11) that has passed through the cloth (1, 3), the annular washer (20) receiving the crimped portion of the cylindrical part (11). The washer (20) includes a radially inward edge (23) facing the cloth (1, 3) side, the radially inward edge (23) having multiple convex parts (24) and concave parts (25) successively positioned in an alternating manner in the circumferential direction. The washer (20) can have circumferentially alternating multiple protruding parts (21) that rise on the opposite side from the cloth (1, 3), and multiple cavities (22) recessed on the cloth (1, 3) side.

Description

Eyelet and washer

The present invention relates to eyelets and washers, and more particularly to eyelets suitable for stretchable fabrics and thin fabrics, and washers that are one component of eyelets.

The eyelet is attached to fabric such as clothes, shoes, bags, etc., and gives holes for breathability, water permeability or shoelaces. The eyelet generally includes two parts, an eyelet having a cylindrical part and a flange part extending radially outward from one axial end of the cylindrical part, and an annular washer. When attaching eyelets to the fabric, the eyelet cylindrical portion is passed through the fabric and then crimped. The crimped portion of the cylindrical portion is received by a washer, thereby holding the fabric between the washer and the flange portion of the eyelet. By doing so, the eyelet is fixed to the dough. However, in a fabric having elasticity such as a fabric or a thin fabric, it may be difficult to hold the fabric firmly between the washer and the flange portion of the eyelet. In such a case, conventionally, an auxiliary member such as packing is interposed between the washer and the flange portion of the eyelet to reduce the expansion and contraction of the fabric or compensate for the thickness of the thin fabric. However, in this case, there is a problem that the cost of manufacturing the eyelet increases due to the use of the auxiliary member, and the process of attaching the eyelet to the cloth becomes troublesome.

As a prior art for improving the above problems, Japanese Patent Application Laid-Open No. 2007-222220 discloses a grommet in which a washer is provided with a plurality of trapezoidal dough pressing pieces having a flat top in the circumferential direction. The washer can press the fabric widely without the fabric pressing piece penetrating the fabric by the flat top portion of the fabric pressing piece, thereby dealing with stretchable fabric or thin fabric. However, the washer disclosed in Japanese Patent Application Laid-Open No. 2007-222220 is large in height (the length of the washer in the axial direction) because it has the fabric pressing piece, so that the washer and the flange portion of the eyelet when attaching the eyelet to the fabric As a result, the amount of the fabric to be wound between the two and the girder increases, so that there is a problem that wrinkles are likely to occur in the fabric portion around the eyelet.

JP 2007-222220 A

The present invention has been made in view of the above points, and an object thereof is to provide eyelets and washers that are suitable for stretchable fabrics and thin fabrics, and are less likely to wrinkle.

In order to solve the above problems, according to one aspect of the present invention, a cylindrical portion, an eyelet having a flange portion extending radially outward from one end of the cylindrical portion, and the cylindrical portion that passes through the cloth are passed through, An eyelet comprising an annular washer for receiving a crimped portion of a cylindrical portion, wherein the washer includes a radially inner edge facing the fabric side, and the radially inner edge is a convex portion alternately in the circumferential direction. And eyelets having a plurality of recesses, respectively. The “radially inner edge facing the fabric side” means that the inner edge in the radial direction of the washer faces the fabric side when the eyelet is attached to the fabric. Thereby, when the attachment of the eyelet is completed, the radially inner edge of the washer can bite into the cloth. The same applies to the radially outer edge of the washer described later.

In the present invention, the inner edge in the radial direction of the washer is formed with an inner edge in the radial direction facing the fabric side, and a plurality of convex portions and concave portions are provided alternately in the circumferential direction on the inner edge in the radial direction. Thereby, when attaching the eyelet to the cloth, the radially inner edge of the washer bites into the cloth, and at this time, the convex part at every predetermined interval in the circumferential direction can bite into the cloth slightly larger than the concave part. Therefore, it becomes possible to hold a stretchable fabric or a thin fabric firmly between the washer and the flange portion of the eyelet.

In one embodiment of the present invention, the washer includes a plurality of raised portions that swell on the opposite side of the fabric and a plurality of depressions that are recessed on the fabric side in the circumferential direction. In this case, the pressure against the fabric by the washer is slightly stronger at the portion corresponding to the depression than at the portion corresponding to the raised portion. Therefore, the dough can be intensively pressed at the depression-corresponding portions for every predetermined interval in the circumferential direction. Therefore, compared to a washer that presses against the fabric in the circumferential direction, the fabric is not easily removed from between the washer and the flange portion of the eyelet, and the washer is difficult to rotate with respect to the fabric.

In one embodiment of the present invention, the surface of the dent facing the fabric side is linear, and the surface of the raised portion facing the fabric side is a curved shape that is convex on the opposite side of the fabric. In this case, the washer can press the cloth with a linear surface corresponding to the recesses alternately in the circumferential direction and a curved surface corresponding to the raised portion.

In one embodiment of the present invention, the flange portion includes an outer flange portion extending linearly outward in the radial direction. In this case, the amount of fabric to be caught between the washers can be reduced as compared with a general eyelet flange in which the fabric side surface of the outer flange is linear and the fabric side surface is curved. Therefore, wrinkles are less likely to occur in the fabric portion around the eyelet.

In one embodiment of the present invention, the flange portion has a plurality of protrusions on the surface facing the fabric side. In this case, the protrusion of the flange portion can bite into the cloth held between the washer and the flange portion of the eyelet. Therefore, it becomes possible to increase the holding | maintenance force of the cloth | dough between a washer and a flange part. In addition, as a protrusion provided on the surface facing the fabric side of the flange portion, for example, in addition to an aspect in which a hemispherical convex portion is provided at every predetermined interval in the circumferential direction, a convex or There is also an aspect in which a convex portion generated by providing a concave logo or design is the projection.

According to another aspect of the present invention, an annular washer that is passed through the cylindrical portion of the eyelet through the fabric and receives the crimped portion of the cylindrical portion, including a radially inner edge facing the fabric side, The radial inner edge is provided with a washer having a plurality of convex portions and concave portions alternately in the circumferential direction. The washer according to the present invention corresponds to the washer in the eyelet according to the present invention described above, and has a plurality of raised portions that swell on the opposite side to the fabric and a plurality of depressions recessed on the fabric side in the circumferential direction. it can.

In the present invention, the fabric in the radial direction of the washer having the convex portion and the concave portion alternately in the circumferential direction is bitten into the elastic fabric or the thin fabric, and the fabric is firmly fixed between the washer and the flange portion of the eyelet. It becomes possible to hold. In addition, by providing an outer flange portion that extends linearly outward in the radial direction on the flange portion of the eyelet, the amount of fabric that is caught between the washer and the outer flange portion can be reduced, and thereby the eyelet Wrinkles can be less likely to occur in the surrounding fabric portion.

FIG. 1 is a partially cutaway perspective view showing an eyelet eyelet according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the eyelet. FIG. 3 is a top view (plan view) showing a washer washer according to an embodiment of the present invention. 4 is a cross-sectional view taken along the line AA in FIG. 5 is a cross-sectional view taken along the line BB in FIG. FIG. 6 is an explanatory diagram of a process of attaching eyelets to the cloth, and shows the arrangement of eyelets and eyelets with respect to the cloth. FIG. 7 is an explanatory diagram of a process for attaching eyelets to the cloth, and shows a state in which the hole of the cloth is passed through the cylindrical portion of the eyelet. FIG. 8 is an explanatory diagram of a process of attaching eyelets to the cloth, and shows a state in which a washer is passed through the cylindrical portion of the eyelet in the state of FIG. 9 and the washer is arranged on the cloth. FIG. 9 is an explanatory diagram of a process for attaching eyelets to the cloth, and shows a state where the eyelet is attached to the cloth by crimping the cylindrical portion of the eyelet with a cross section of a washer passing through the raised portion similar to FIG. FIG. 10 shows a state in which the eyelet of FIG. 9 is attached to the cloth, with a cross section of a washer passing through a recess similar to FIG. FIG. 11 is a partially enlarged view of FIG. FIG. 12 is a cross-sectional explanatory view similar to FIG. 6 showing a state immediately before the eyelet and washer are attached to a thin fabric. FIG. 13 is a cross-sectional explanatory view similar to FIG. 10 showing a state where the attachment of the eyelet to the thin fabric is completed. FIG. 14 is a perspective view similar to FIG. 1 showing a modification of the eyelet. FIG. 15 is a partial cross-sectional view similar to FIG. 11 showing a state in which the eyelet of FIG. 14 and the washer of FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to these embodiments, and can be appropriately changed within the scope of the claims and the equivalent scope thereof. It will be understood by those skilled in the art. FIG. 1 is a perspective view showing a eyelet 10 of eyelet according to an embodiment of the present invention, partially cut away. FIG. 2 is a cross-sectional view of the eyelet 10. The eyelet 10 includes a cylindrical portion 11 and a flange portion 12 that extends from one end of the cylindrical portion 11 (the lower end in the drawing of FIG. 2) outward in the radial direction of the cylindrical portion 11. Hereinafter, the vertical direction of the eyelet 10 is based on the paper surface of FIGS. 2 and 4-13. The vertical dimension is expressed as a height. A disc 13 having a plurality (seven in FIG. 1) of circular holes 14 is fixed to the lower side of the cylindrical portion 11 of the eyelet 10. The cylindrical portion 11 and the flange portion 12 are formed, for example, by drawing a single metal plate. The disc 13 is also made of metal, but may be made of resin. In addition, the present invention can be applied to an eyelet (see FIG. 12) that does not have the disc 13. On the lower side of the inner peripheral surface of the cylindrical portion 11, a step portion 15 is provided in which the inner diameter of the cylindrical portion 11 slightly increases stepwise. In the present specification, it is assumed that the cylindrical portion 11 is above the step portion 15 and the flange portion 12 is below the step portion 15. The thickness of the cylindrical portion 11 is gradually decreased upward. The flange portion 12 includes an inner flange portion 12a extending in a curved shape from the step portion 15 downward and radially outward to the lowermost end 12c, and an outer flange portion extending obliquely further radially outward and upward from the lowermost end 12c. 12b. The outer flange 12b is preferably formed in a straight line, but is not limited to a straight line. The lowermost end 12c is on the extension line along the axial direction of the inner edge 23 of the washer 20, which will be described later, or its extension line in a state where the eyelet 10 and the washer 20 are overlapped before caulking (see FIG. 8). Is located radially outside. Thereby, when it is set as the state which hold | maintained the cloth | dough 1 with the inner edge 23, compared with the case where the lowermost end 12c is located inside radial direction rather than on the extension line along the axial direction of the inner edge 23 of the washer 20, Wrinkles can be made more difficult on the fabric 1 on the outer flange 12b. The disc 13 is inserted from the open end side above the cylindrical portion 11 and is fixed by press-fitting at a position in contact with the step portion 15. The hole 14 of the disk 13 gives air permeability and water permeability to the cloth such as clothes to which the eyelet 10 is attached.

FIG. 3 is a top view (plan view) showing the eyelet washer 20 according to the embodiment. The washer 20 is a metal annular and thin plate-like component having a circular opening 29, and is attached to the fabric 1 together with the eyelet 10 described above. The diameter of the opening 29 is set slightly larger than the outer diameter of the cylindrical portion 11 of the eyelet 10 (see FIG. 8 and the like). More specifically, the diameter of the opening 29 is set to 8.0 mm with respect to the outer diameter 6.5 mm of the cylindrical portion 11, and the difference here is that the washer 20 bites into and holds the stretchable fabric 1. The difference is 1.5 mm. In the above, the thickness of the fabric 1 is 0.07 mm, but for example, the difference may be in the range of 1.0 mm to 2.0 mm.

4 is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line BB in FIG. A washer 20 corresponding to the cross section of FIG. 4 is also shown in FIG. The washer 20 includes a radially inner portion (hereinafter simply referred to as “inner portion”) 20 A in which a plurality of raised portions 21 bulging upward are formed in the circumferential direction, and a radially outer portion (hereinafter referred to as “inner portion”) extending radially outward from the inner portion 20 A. 20B). In the inner portion 20 A, there is a recess 22 that is recessed downward between the two

ridges

21, 21 adjacent in the circumferential direction. The length along the circumferential direction of the washer 20 of each raised portion 21 is longer than the length along the circumferential direction of each recess 22. It can also be said that one ridge extending in the circumferential direction is divided into a plurality of ridges 21 by a plurality of depressions 22. Further, the recess 22 protrudes downward and functions as a rib that reinforces the inner portion 20A. In FIG. 3, twelve raised portions 21 and twelve depressions 22 are provided, but this number is merely an example, and the number may be larger or smaller. The radially inner end of the inner portion 20A defines an inner edge 23 that faces downward. The opening 29 is defined by being surrounded by the inner edge 23. The inner edge 23 has twelve fine protrusions 24 in the circumferential direction of the washer 20 as an example in which the portion corresponding to the depression 22 slightly protrudes downward from the surface 27 of the depression 22 facing the fabric 1 side. Between the two

convex parts

24 and 24 adjacent to the circumferential direction becomes the fine recessed part 25 recessed relatively upwards, and the recessed part 25 also becomes 12 pieces as an example in the circumferential direction. The length along the circumferential direction of each concave portion 25 is longer than the length along the circumferential direction of each convex portion 24. Further, the length of the protrusion 24 protruding from the recess 25 is, for example, about 0.1 mm to 0.5 mm. In addition, the convex part 24 and the recessed part 25 can be formed, without forming the hollow 22. FIG. It can be said that the convex part protrudes relatively to the concave part and the concave part is relatively concave to the convex part. In other words, with respect to a certain position above the inner edge 23 in the up and down direction of the washer, it can be said that a portion having a long dimension from the reference is a convex portion and a short portion is a concave portion.

In the cross-section of the washer 20 through the raised portion 21 shown in FIG. 4, the inner portion 20A is curved so as to protrude upward from the inner edge 23 in the radial direction, radially outward from the inner edge 23, and After rising and defining the apex 20a in the inner portion 20A, it extends further radially outward and downward to the radially outer end 20c of the inner portion 20A. The radially outer end 20c of the inner portion 20A is a boundary 20c between the inner portion 20A and the outer portion 20B. The length along the radial direction of the outer portion 20B is about ½ of the length along the radial direction of the inner portion 20A. In a cross-section through the ridge 21 of the washer 20 (see FIG. 4), the outer portion 20B extends slightly upward from the radially outer end 20c radially outward to define a vertex 20b in the outer portion 20B, Further, it ends slightly down radially outward. A radially outer end of the outer portion 20B becomes an outer edge 26 that is inclined outwardly in the radial direction and faces downward. The vertex 20b of the outer portion 20B is located slightly lower than the vertex 20a of the inner portion 20A. The outer edge 26 is slightly higher than the inner edge 23. The midpoint 20 c is slightly lower than the outer edge 26 and slightly higher than the inner edge 23. In the cross section passing through the depression 22 shown in FIG. 5 of the washer 20, the outer portion 20B is the same as the cross section passing through the raised portion 21 described above. In a cross section passing through the recess 22 of the washer 20 (see FIG. 5), the inner portion 20A extends linearly while slightly rising from the inner edge 23 to the boundary 20c and radially outward. In the washer 20, the highest point is the vertex 20 a of the inner portion 20 A, and the lowest point is the tip of the convex portion 24. The length along the vertical direction (axial direction) between the apex 20a and the convex portion 24 is, for example, about 0.5 to 1.0 mm. Thus, the washer 20 is a very thin part.

6 to 9 are cross-sectional explanatory views showing a process of attaching the eyelet, that is, the eyelet 10 and the washer 20 to the stretchable fabric 1 such as a fabric. Here, the stretchable fabric 1 is a fabric that stretches and elastically shrinks, and the stretch rate is 75% to 100% under a load of 100 g (grams), that is, the length of the original fabric. On the other hand, it extends to a length of 1.75 to 2 times. In attaching the eyelet to the fabric 1, a circular hole 2 smaller than the outer diameter of the cylindrical portion 11 of the eyelet 10 is formed in the fabric 1 as shown in FIG. 6. The eyelet 10 is applied to the fabric 1 from below and the washer 20 is applied from above. The eyelet 10 is placed on a lower die (not shown). Next, as shown in FIG. 7, the cylindrical portion 11 of the eyelet 10 is passed through the hole 2 of the fabric 1, and the cylindrical portion 11 protrudes above the fabric 1. At this time, the stretchable fabric 1 is in a state where the expanded portion when the cylindrical portion 11 is passed through the hole 2 gathers and accumulates below the cylindrical portion 11. At this time, there is a slight gap between the fabric 1 and the upper surface of the flange 12 of the eyelet 10. Next, as shown in FIG. 8, a washer 20 is passed through the opening 29 with respect to the cylindrical portion 11 of the eyelet 10 protruding above the dough 1. Further, the washer 20 is lightly pressed down so as to eliminate the gap between the fabric 1 and the upper surface of the flange 12 of the eyelet 10. As a result, the fabric 1 comes into contact with the upper surface of the flange 12 of the eyelet 10. Next, as shown in FIG. 9, the cylindrical portion 11 of the eyelet 10 is crimped by an upper die (not shown) so as to curve outward in the radial direction. By this caulking, the tip 11a of the curved cylindrical portion 11 of the eyelet 10 hits the vicinity of the apex 20a of the inner portion 20A of the washer 20, and presses the washer 20 downward. Thereby, the convex part 24 and the concave part 25 of the inner edge 23 of the washer 20 bite into the cloth 1 near the lower part of the cylindrical part 11 of the eyelet 10, and the outer edge 26 also bites into the cloth 1. As a result, the stretchable fabric 1 is firmly held between the washer 20 and the flange portion 12 of the eyelet 10. In FIG. 9, the state where the eyelet is fixed to the cloth 1 is shown by a cross section of the washer 20 passing through the raised portion 21 similar to FIG. 4. On the other hand, in FIG. 10, the state where the eyelet is fixed to the cloth 1 is shown by a cross section of the washer 20 that passes through the recess 22 similar to FIG. 5.

FIG. 11 is a partially enlarged view of FIG. As can be seen from the drawing, the portion corresponding to the recess 22 of the inner portion 20 A of the washer 20 has a linear lower surface (hereinafter referred to as “linear surface”) 27. On the other hand, the portion corresponding to the raised portion 21 of the inner portion 20B of the washer has a curved lower surface (hereinafter referred to as “curved surface”) 28 (see FIG. 9) that is convex upward. In the washer 20, the lower surface of the inner portion 20A, that is, the surface on the fabric 1 side, is continuous with the linear surface 27 and the curved surface 28 alternately in the circumferential direction, so that the inner portion 20A is pressed against the fabric 1 by a linear surface. 27 is slightly stronger than the curved surface 28. In this case, as compared with a conventional washer in which the pressure on the fabric is uniform in the circumferential direction, the pressure is applied more intensively, so that the fabric 1 is not easily removed from the washer 20 and the flange 12 of the eyelet 10, The washer 20 is difficult to rotate with respect to the fabric 1. Referring to FIG. 11 again, in the eyelet fixing state, the straight surface 27 of the inner portion 20A of the washer 20 is inclined so as to slightly drop inward in the radial direction. Further, the upper surface 12 d of the linear outer flange portion 12 b of the flange 12 of the eyelet 10, that is, the surface on the fabric 1 side is also inclined inward and downward in the radial direction and is substantially parallel to the linear surface 27. Since there are twelve straight surfaces 27 in the washer 20 in the circumferential direction, the fabric 1 can be sandwiched between the straight surfaces 27 substantially parallel to the twelve locations in the circumferential direction and the upper surface 12d of the outer flange portion 12b. This also contributes to making it difficult for the dough 1 to come out from between the eyelet 10 and the washer 20. Further, since the straight surface 27 of the inner portion 20A of the washer 20 and the upper surface 12d of the outer flange portion 12b of the eyelet are substantially parallel to each other, the straight surface 27 and the outer flange portion 12b are compared with the case where the flange of the eyelet is curved. The amount of the fabric 1 to be wound between the upper surface 12d and the upper surface 12d is small, so that there is an advantage that wrinkles hardly occur in the fabric portion around the eyelet.

FIG. 12 is an example in which another eyelet is applied to the thin fabric 3 having no elasticity, and is a cross-sectional explanatory view similar to FIG. 6 showing a state immediately before attaching the eyelet. This eyelet is composed of an eyelet 30 from which the disc 13 is removed from the eyelet 10 described above and the washer 20 described above. Although the eyelet 30 does not have the step part 15, it is the same as the eyelet 10 except that the disk 13 and the step part 15 are not provided. Therefore, the same reference numbers as the eyelet 10 are used for the cylindrical part 11, the flange part 12, and the like. . FIG. 13 is a cross-sectional explanatory view similar to FIG. 10, showing a state where the attachment of the eyelet to the fabric 3 is completed. When attaching the eyelet to the cloth 3, a circular hole 4 having a diameter slightly larger than the outer diameter of the cylindrical portion 11 of the eyelet 10 is formed in the cloth 3. The attachment process of the eyelet to the fabric 3 is the same as the attachment to the fabric 1, and the washer 20 is passed from the opening 29 through the cylindrical portion 11 of the eyelet 30 that passes through the hole 4 of the fabric 3 and protrudes above the fabric 3. After that, the cylindrical portion 11 is crimped. Thereby, the eyelet is fixed to the cloth 3 as shown in FIG. Also in this case, the convex portion 24 and the concave portion 25 and the outer edge 26 of the inner edge 23 of the washer 20 bite into the fabric 3, and the fabric 3 is formed by the circumferentially alternate linear surfaces 27 and curved surfaces 28 of the inner portion 20 A of the washer 20. Press. As a result, the thin fabric 3 is firmly held between the washer 20 and the flange portion 12 of the eyelet 30. Further, since the straight surface 27 of the inner portion 20A of the washer 20 and the upper surface 12d of the outer flange portion 12b of the eyelet are substantially parallel to each other, the straight surface 27 and the outer flange portion 12b are compared with the case where the flange of the eyelet is curved. The amount of the fabric 3 to be wound between the upper surface 12d and the upper surface 12d is small, so that there is an advantage that wrinkles hardly occur in the fabric portion around the eyelet.

FIG. 14 is a partially broken perspective view of an eyelet 40 which is a modification of the eyelet. Like the eyelet 10, the eyelet 40 has a cylindrical portion 41 and a flange portion 42, and a circular plate 13 with a hole 14 (the circular plate 13 is the same as the eyelet 10) in the step portion 15 in the cylindrical portion 41. Therefore, the same reference number is attached). The flange portion 42 includes an outer flange portion 42b extending obliquely outward in the radial direction and upward. A protrusion 46 is provided on the upper surface 42d of the outer flange portion 42b. The lower surface of the outer flange portion 42 b corresponding to the protrusion 46 is a recess 47. Each protrusion 46 has a hemispherical shape, and a total of eight are provided at predetermined intervals in the circumferential direction. FIG. 15 shows a state in which the eyelet 40 and the above-described washer 20 are attached to the stretchable fabric 1 (the same reference numeral is assigned to the fabric 1 because it is the same as the fabric 1 in FIG. 6 and the like). The protrusion 46 becomes the cloth by sandwiching the cloth 1 by the surface of the flange portion 42 having the protrusion 46 facing the cloth 1 and the surface of the washer 20 facing the cloth 1 (including the curved surface 28 and the straight surface 27). 1 so that the dough 1 can be held more easily. The number and shape of the protrusions 46 are not limited to the above, and may be a conical shape or a square weight. Moreover, the part which protrudes upwards formed by the process which dents the logo, the design, etc. which are formed in the upper surface 42d of the outer side flange part 42b of the eyelet 40 can also be made into a protrusion.

1, 3

Fabric

10, 30, 40

Eyelet

11, 41

Cylindrical part

12, 42

Flange part

12b, 42b Outer flange part 13 Disc 14 Hole 15 Step part 20 Washer 20A Radial inner part 20B Radial outer part 21 Raised part 22 Depression 23 Inner edge 24 Convex part 25 Concave part 26 Outer edge 27 Straight surface 28 Curved surface 29 Opening

Claims

An eyelet (10, 30, 40) having a cylindrical portion (11, 41) and a flange portion (12, 42) extending radially outward from one end of the cylindrical portion (11, 41);
An eyelet comprising an annular washer (20) that is passed through the cylindrical portion (11, 41) through the dough (1, 3) and receives the crimped portion of the cylindrical portion (11, 41),
The washer (20) includes a radially inner edge (23) facing the fabric (1, 3) side, and the radially inner edge (23) is alternately convex (24) and concave (25) in the circumferential direction. ) And a plurality of eyelets.
The washer (20) has a plurality of raised portions (21) that swell on the opposite side of the fabric (1, 3) and a plurality of depressions (22) that are recessed on the fabric (1, 3) side in the circumferential direction. The eyelet according to claim 1.
The surface (27) facing the fabric (1, 3) side of the recess (22) is linear, and the surface (28) facing the fabric (1, 3) side of the raised portion (21) is a fabric (1, The eyelet according to claim 2, wherein the eyelet has a curved shape that is convex to the opposite side to 3).
The eyelet according to any one of claims 1 to 3, wherein the flange portion (12, 42) includes an outer flange portion (12b, 42b) extending linearly outward in the radial direction.
The eyelet according to any one of claims 1 to 4, wherein the flange portion (42) has a plurality of protrusions (46) on a surface facing the cloth (1, 3) side.
An annular washer (20) that passes through the cylindrical portion (11, 41) of the eyelet (10, 30, 40) that has passed through the fabric (1, 3) and receives the crimped portion of the cylindrical portion (11, 41). Because
A washer including a radially inner edge (23) facing the fabric (1, 3) side, the radially inner edge (23) having a plurality of convex portions (24) and concave portions (25) alternately in the circumferential direction. .
The said washer has a plurality of ridges (21) that swell on the opposite side to the fabric (1, 3) and a plurality of depressions (22) that are recessed on the fabric (1, 3) side in the circumferential direction. 6. The washer according to 6.