JP5808346B2 - Eyelet installation method - Google Patents

Description

  The present invention relates to a washer for eyelets and a method for attaching eyelets using the same.

  An annular reinforcing tool called “eyelet” is used to reinforce the periphery of a hole provided in clothing or the like. Conventionally, when attaching such eyelets to thin fabrics or stretchable fabrics, in order to increase the thickness of the fabric or to close the stitches, it has been carried out after inserting a reinforcing material such as packing. It was. However, insertion of the packing increases the number of parts, which sometimes complicates the caulking work. In addition, after attaching the eyelet, loosening may occur at the attachment position due to long-term use.

  Therefore, in order to suppress the occurrence of loosening due to long-term use when attaching to a thin fabric or a stretchable fabric, for example, in Japanese Patent Application Laid-Open No. 2007-222220, an washer engaged with an eyelet body is engaged. An eyelet washer having a trapezoidal dough pressing piece with a flat top is provided on the surface. According to this, since the cloth pinched between the eyelet body can be pressed widely at the top of the trapezoidal shape of the cloth pressing piece, it is more stable without making a hole in a thin cloth or elastic cloth. Can be fixed.

JP 2007-222220 A

  However, even when the eyelet described in Patent Document 1 is used, depending on how the fabric is sandwiched or depending on the type of fabric, looseness may still occur, and it is more reliable for thin fabrics and stretchable fabrics. In order to fix the eyelet, there is still room for improvement.

  Therefore, the present invention provides an eyelet washer that can fix the eyelet more securely and stably for a long period of time to a thin fabric or a stretchable fabric, and an eyelet attaching method using the same.

  In order to solve the above problems, in one aspect, the present invention is an eyelet washer having a hole for joining to an eyelet body, and a riser that rises around the hole, and is arranged around the riser. A riser portion, and a riser portion having a plurality of thin wall portions spaced apart from each other along an inner peripheral surface surrounding the hole portion.

  In the washer for eyelets according to an embodiment of the present invention, a plurality of thin portions includes a groove portion formed on the inner peripheral surface.

  The eyelet washer according to another embodiment of the present invention includes a groove portion in which a plurality of thin portions are formed in a V shape from an inner peripheral surface toward an outer peripheral surface direction of the riser portion, and the groove portion is a riser portion. It extends along the height direction (H).

  The eyelet washer according to yet another embodiment of the present invention has a convex portion protruding in an annular shape on the outer periphery of the riser portion and a first concave portion formed on the back surface of the convex portion, The first end part of the eyelet body is accommodated in the first concave part at the time of joining, the first peripheral part supporting the fabric on the surface of the convex part, and the surface that is arranged on the outer peripheral side of the first peripheral part and is continuous with the convex part. And having a second peripheral edge that accommodates the other end of the eyelet body in a second recess (27b) formed between the protrusion and the surface continuous with the protrusion when the eyelet body is joined.

  In a washer for eyelets according to still another embodiment of the present invention, the riser portion is elastically deformed radially outward when joined to the eyelet body.

  In another aspect of the present invention, an eyelet body including a cylindrical post having a distal end capable of cutting a fabric and a flange extending radially outward of the post from the base end of the post, and the eyelet body are joined to each other An eyelet attachment method for forming eyelets by sandwiching a cloth between eyelets and washer having a hole, wherein (a) the eyelet rises around the hole and is separated from each other along the inner peripheral surface surrounding the hole A step of sandwiching the fabric between the eyelet washer and the eyelet washer having a riser portion having a plurality of thin-walled portions and a peripheral portion arranged around the riser portion, and (b) inserting a post into the hole portion Cutting the fabric at the tip of the post while holding the fabric between the outer peripheral surface of the post and the inner peripheral surface of the riser section, and (c) the eyelet body and the eyelet A method of attaching eyelets, the method comprising: deforming the riser portion radially outward by pressing the jar and rupturing at least a part of the plurality of thin portions; and (d) fixing the eyelet body and a washer for eyelets. It is.

  ADVANTAGE OF THE INVENTION According to this invention, the washer for eyelets which can fix an eyelet more reliably and stably for a long period of time with respect to thin cloth and a stretchable cloth, and the eyelet attachment method using the same are provided.

FIG. 1 is a cross-sectional view showing an eyelet body, fabric, and eye washers according to an embodiment of the present invention. FIG. 2 shows a top view of the eyelet washer according to the embodiment of the present invention. FIG. 3 shows a side view of the eyelet washer according to the embodiment of the present invention. FIG. 4 is a partially enlarged view of the thin portion of the eyelet washer according to the embodiment of the present invention. FIG. 5A is a process cross-sectional view (No. 1) showing an example of the eyelet attaching method according to the embodiment of the present invention, and shows an example in which the eyelet main body and the eyelet washer are attached to the punch and the die, respectively. FIG. 5B is a process cross-sectional view (part 2) illustrating an example of the eyelet attachment method according to the embodiment of the present invention, and illustrates a state in which the fabric is cut at the tip of the eyelet body. FIG. 5C is a process cross-sectional view (part 3) illustrating the example of the eyelet attachment method according to the embodiment of the present invention, and shows a state after the fabric is cut at the tip of the eyelet body. FIG. 5D is a process cross-sectional view (part 4) illustrating the example of the eyelet attaching method according to the embodiment of the present invention, and illustrates a state before the tip of the eyelet body and the eyelet washer are joined. FIG. 6 is a schematic view of the case where the eyelet washer is joined to the eyelet body to form the eyelet. FIG. 7 is a partially enlarged view showing details of the joining state of the eyelet washer and the eyelet body. FIG. 8 is a cross-sectional view illustrating a modification of the eyelet washer according to the embodiment of the present invention. FIG. 9 is a schematic view showing a state after the eyelet washer shown in FIG. 8 is attached to the fabric.

  Embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. The following embodiments exemplify apparatuses and methods for embodying the technical idea of the present invention, and the technical idea of the present invention is to change the structure, arrangement, etc. of components to the following. Not specific.

  As shown in FIG. 1, the eyelet according to the embodiment of the present invention includes an eyelet body 1 and an eyelet washer 2 having a hole 21 for joining the eyelet body 1. As materials for the eyelet body 1 and the washer 2, various commercially available parts can be used. For example, the eyelet body 1 is preferably used by pressing a metal plate.

  The eyelet body 1 includes a cylindrical post 11 having a distal end portion 11 a capable of cutting the fabric 3, and a flange 12 extending from the base end 11 b of the post 11 toward the radially outer side of the post 11. The washer 2 includes a riser portion 22 that rises around the hole portion 21, and a peripheral portion 23 that is disposed around the riser portion 22 and that joins the eyelet body 1 with the fabric 3 interposed therebetween. The peripheral edge portion 23 is integrated with the riser portion 22 and is provided in a bowl shape toward the radially outer side.

  The riser portion 22 has a ring shape as shown in FIG. 2 and is higher than the peripheral portion 23 toward the upper side of the paper as shown in FIG. 3, rises from the peripheral portion 23, and has a hole portion 21 at its inner periphery. Is formed. As shown in FIG. 2, the riser portion 22 includes a plurality of thin portions 24 that are spaced apart from each other along an inner peripheral surface 221 that surrounds the hole portion 21. On the surface of the inner peripheral surface 221 of the riser portion 22, in order to increase the frictional force between the fabric 3 and the post 11 or the holding force of the fabric 3, fine uneven processing or the like may be performed.

  Although there is no restriction | limiting in the number of the thin parts 24, For example, it is preferable to provide about 3 to 36 pieces. If the number of the thin portions 24 is two or less, it may be difficult to sufficiently elastically deform the riser portion 22 when the eyelet 1 and the washer 2 are joined. On the other hand, when the number of the thin-walled portions 24 is 37 or more, the processing is difficult and the area for pressing the dough becomes small, and the riser portion 22 may break the dough 3 due to deformation at the time of joining, and fixing may not be sufficient.

  As shown in FIG. 4, the thin portion 24 includes a groove portion 241 formed along the inner peripheral surface 221. As shown in FIG. 3, the groove portion 241 extends along the height direction (H direction) of the riser portion 22. In the example shown in FIG. 4, the cross section formed in a substantially V shape from the inner peripheral surface 221 of the riser part 22 toward the outer peripheral surface 222 is formed by a triangular cutout. The shape of the groove portion 241 is not limited to the examples shown in FIGS. 1 to 4, and various shapes are used. For example, the groove 241 may be a semicircular, semi-elliptical, or trapezoidal groove 241 formed in a substantially U shape from the inner peripheral surface 221 toward the outer peripheral surface 222. Alternatively, the groove 241 may have a rectangular or polygonal cross section. However, the shape of the groove portion 241 is preferably a preferable shape for breaking a part of the groove portion 241 when the eyelet body 1 and the washer 2 are caulked. Therefore, as shown in FIG. 4, the groove portion 241 is preferably formed with a vertex 241 a that is a base point of fracture when a predetermined pressure is applied to the riser portion 22. In the example of FIG. 4, a vertex 241 a is formed at the intersection of two surfaces constituting the V-shape and deepest from the inner peripheral surface 221 toward the outer peripheral surface 222.

  Here, when the thickness of the riser portion 22 is L and the depth of the apex 241a is L1, if the depth L1 is made too deep, the entire groove portion 241 is broken when the riser portion 22 is pressed during caulking. In some cases, a part of the riser portion 22 may be missing. Conversely, if the depth L1 is made too shallow, when the riser portion 22 is pressed during caulking, the groove portion 241 does not break and the washer 2 does not elastically deform well, and the eyelet 1 and the washer 2 are caulked. May not work well. Although there is no restriction | limiting in particular in the depth and position of the vertex 241a of the groove part 241, For example, it is preferable that the depth L1 is about 1 / 2-5 / 6 with respect to the thickness L. In addition, in order to produce a fracture | rupture more efficiently at the time of caulking, the angle which the two surfaces which form the vertex 241a oppose should just be about 30 degrees-60 degrees.

  As shown in FIG. 3, the peripheral edge 23 includes a first peripheral edge 26 and a second peripheral edge 27. The first peripheral edge portion 26 has, on the outer periphery of the riser portion 22, a convex portion 26a that protrudes in an annular shape toward the upper side of the paper surface, and a first concave portion 26b that is formed on the back surface of the convex portion 26a. The 2nd peripheral part 27 is arrange | positioned at the outer peripheral side of the 1st peripheral part 26, and has the surface 27a which follows the convex part 26a. A second concave portion 27b is formed between the surface 27a and the convex portion 26a. After joining the eyelet body 1 and the washer 2, as shown in FIG. 7, one end of the eyelet body 1 (the tip 11a of the post 11) is accommodated in the first recess 26b. The other end of the eyelet main body 1 (the front end 12a of the flange 12) is accommodated in the second recess 27b. The tip 11a and the tip 12a of the eyelet body 1 are accommodated in the first recess 26b and the second recess 27b, respectively, so that the eyelet body 1 and the washer 2 are fixed more stably for a long time.

  When the eyelet body 1 and the washer 2 are swaged to form eyelets on the fabric 3, the eyelet body 1 and the washer 2 are placed on the mold (punch 4 and die 5), respectively, as shown in FIG. 5A. Then, the fabric 3 is sandwiched between the eyelet body 1 and the washer 2. Here, a groove 41 for fixing the flange 12 on the punch 4 is formed in the punch 4. On the die 5, a central support 51 on which the riser portion 22 of the washer 2 is supported, a working surface 52 disposed on the outer periphery of the central support 51, and a further outer peripheral side of the working surface 52, A peripheral edge support portion 53 on which the peripheral edge portion 23 of the washer 2 is supported is formed thereon.

  Next, the post 4 of the eyelet body 1 is inserted into the hole 21 by bringing the punch 4 that holds the eyelet body 1 close to the die 5 that holds the washer. Thereby, as shown in FIG. 5B, the fabric 3 is sandwiched between the outer peripheral surface 112 of the post 11 and the inner peripheral surface 221 of the riser portion 22. As shown in FIG. 5C, the fabric 3 is cut at the tip 11 a of the post 11 by further bringing the two dies closer together while sliding the tip 11 a of the eyelet body 1 onto the working surface 52. After the cutting, the eyelet body 1 and the washer 2 are further pressed by the punch 4 and the die 5 and the riser portion 22 is pressed by the post 11 and the flange 12 of the eyelet body 1, as shown in FIG. The riser part 22 is elastically deformed radially outward while being wound between the riser part 22 and the post 11. At this time, due to the elastic deformation of the riser part 22, at least a part of the thin part 24 (not shown) starts to break.

  Further, when the eyelet body 1 and the washer 2 are pressed, as shown in FIGS. 6 and 7, the fabric 3 is sandwiched between the inner peripheral surface 221 of the riser portion 22 and the outer peripheral surface 112 of the post 11. The front end portion 11a of the post 11 is accommodated in the first concave portion 26b, and the front end portion 12a of the flange 12 is accommodated in the second concave portion 27b via the cloth 3, and the fixation between the eyelet body 1 and the washer 2 is completed. As a result, the thin-walled portion 24 is broken from the leading end side of the riser portion 22 (the top side facing the eyelet body 1 in the state before caulking) to the middle (intermediate) along the H direction. To do. In addition, it is not necessary for all of the plurality of thin portions 24 to break in the same manner, and the thin portions 24 that do not break may remain after joining with the eyelet body 1. Moreover, the thin part 24 may be in an extended state without breaking. However, it is preferable that the thin-walled portion 24 that does not break is smaller than the thin-walled portion 24 that is broken.

  Since the riser portion 22 presses the fabric 3 in a direction (radially inward) to restore the elastic deformation outward in the radial direction received during the caulking after the caulking, a thin fabric or a stretchable fabric is used. Even if it exists, it becomes possible to fix between the eyelet main body 1 and the washer 2 more reliably and stably for a long period of time. At this time, at least a part of the thin portion 24 formed in the riser portion 22 is broken, so that the broken portion does not become a flat surface and a relatively sharp shape is generated radially, and is caught on a particularly thin fabric. The anchor effect is expected. Further, as shown in FIG. 7, the fabric 3 can be supported by at least three surfaces on the surface of the riser portion 22 and the convex portion 26a and on the surface 27a, so that loosening at the attachment position is difficult to occur. Since the tip 11a of the post 11 of the eyelet body 1 and the tip 12a of the flange 12 are housed in the first recess 26b and the second recess 27b of the peripheral edge 23, respectively, positional displacement during caulking is suppressed, The eyelet body 1 and the washer 2 can be more reliably fixed. That is, in FIG. 7, the front end 12a of the flange 12 is located below the outer peripheral end of the second peripheral portion 27 in the H direction, and the outer peripheral end of the second peripheral portion 27 is an elastically deformed riser portion. It is located below the tip of 22 in the H direction. In the state shown in FIG. 7, the riser portion 22 is bent from the peripheral edge portion 23 side and elastically deformed radially outward.

  Although the embodiments of the present invention have been described as described above, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. For example, as shown in FIG. 8, a plurality of groove portions 24b that are separated from each other along the circumferential direction of the cylindrical riser portion 22b may be formed up to the middle (intermediate position) of the riser portion 22b in the H direction. Absent. In the washer 2b shown in FIG. 8 as well, as shown in FIG. 9, a force pressing the fabric 3 against the eyelet body 1 from the inner peripheral surface 221b of the riser portion 22b works due to the elastic force acting radially inward of the riser portion 22b. Compared to conventional washers, it has better holding power for thin fabrics and stretchable fabrics. As described above, the present invention naturally includes various modes that are not explicitly described herein, and can be embodied by being modified without departing from the scope of the invention when it is practiced.

DESCRIPTION OF SYMBOLS 1 ... Eyelet main body 2, 2b ... Washer 3 ... Dough 11 ... Post 12 ... Flange 21 ... Hole part 22, 22b ... Riser part 23 ... Peripheral part 24 ... Thin part 24b ... Groove part 26 ... 1st peripheral part 26a ... Convex part 26b ... 1st recessed part 27 ... 2nd peripheral part 27a ... Surface 27b ... 2nd recessed part 241 ... Groove part

Claims (1)

A cylindrical post (11) having a distal end portion (11a) capable of cutting the fabric (3), and a flange (12) extending from the base end of the post (11) toward the radially outer side of the post (11). Eyelet attachment method for forming eyelets by inserting fabric (3) between eyelet body (1) provided and eyelet washer (2) having a hole (21) for joining to eyelet body (1) Because
A riser portion (22) having a plurality of thin-walled portions (24) that stand up around the hole portion (21) and are spaced apart from each other along an inner peripheral surface (221) surrounding the hole portion (21); Sandwiching the dough (3) between a eyelet washer (2) having a peripheral edge (23) disposed around the riser part (22) and the eyelet body (1);
The post (11) is inserted into the hole (21), and the fabric (3) is interposed between the outer peripheral surface (112) of the post (11) and the inner peripheral surface (221) of the riser portion (22). ) Holding the dough (3) at the tip of the post (11) while holding
The eyelet body (1) and the eyelet washer with the fabric (3) held between the outer peripheral surface (112) of the post (11) and the inner peripheral surface (221) of the riser portion (22). Pressing (2) to deform the riser portion (22) radially outward, and breaking at least a part of the plurality of thin portions (24);
Bonding and fixing the eyelet body (1) and the eyelet washer (2) while holding the fabric (3) between the inner peripheral surface (221) and the outer peripheral surface (112) Eyelet mounting method including and.

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