JP2006234154A - Caulking method of washer member and rivet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washer member capable of obtaining stable caulking force by lowering a caulked part. <P>SOLUTION: The washer member 20 is used for fastening objects to be fastened 10, 12 with a rivet 1. In the washer member 20, a loosely inserted hole 21 is formed to loosely insert the rivet 1, a bearing surface 22 around the loosely inserted hole 21 is step-shaped having a projection portion 22a in which the center side of the loosely inserted hole 21 is projected from the outside. A housing part 23 having a predetermined thickness is formed opposite to the projected bearing surface 22 at the loosely inserted hole to house the caulking part 6 in the housing part 23. Since the part of washer member is fitted in the objects to be fastened, and the caulked part of the rivet is located in the objects to be fastened, the caulking height from the surface of the objects to be fastened is extreamly lowered, so as not to disturb the caulked part when a briefcase and a bag are in use. Even when the caulking height is lowered, the caulking strength does not fall, and the caulking life is also long. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer member for fixing an object to be fastened with a rivet, and in particular to a washer member for preventing a caulking portion of a rivet from protruding as much as possible from a surface of the object to be fastened, and a rivet caulking method using this washer member.

  In leather products such as bags and bags, metal or resin rivets are used to fix these handles, shoulder bands, or lids such as school bags or handles to the back plate. In addition, cloths are sewn or soft skins are affixed to the inside of these bags, bags, etc., so that the caulking areas are not exposed. As a specific example of such a caulking location, caulking fixing as shown in FIGS. 6 and 7 is employed. In FIG. 6, the objects to be fastened 110 and 112 are aligned with each other, and a through hole 111 through which the leg 102 of the rivet 101 is inserted is formed at the fixed position, and the rivet 101 is inserted into the other side with the leg 102 first. A washer member 120 that supports the caulking portion 106 of the rivet 101 is fitted and fixed. In this case, the height (h) obtained by combining the washer member and the caulking portion is a shape protruding from the article to be fastened. Further, FIG. 7 shows that the fastening objects 110 and 112 are fixed by caulking the rivet 101 without using the washer member 120 in order to reduce the height h as much as possible.

Further, FIG. 8 is mainly used for a school bag, for example, as shown in JP-A-6-327512. As shown in FIG. 8, the cushion material 143 is provided between the substrate 140 constituting the back plate and the outer surface 141 except for an upper side vicinity portion 142 and an upper central portion (not shown) along the upper side of the back plate. A baseband portion of the lid 144 is sewn to the upper side vicinity portion 142 on the outer surface of the back plate, and a shoulder strap having a top eyelet attached to the upper central portion of the back plate, and both ends The handle 145 with the eyelet fitting attached thereto is covered with a rivet 147 that covers the end portion thereof, is covered with a cloth 146, and is inserted through the eyelet fitting.
JP-A-6-327512

  However, when the rivet is inserted into the object to be fastened and caulked in the washer member on the opposite side, the fastening and fixing becomes strong, but the height of the caulking part becomes high, which is obstructive. In addition, when the caulking portion is caulked so as to be in direct contact with an object to be fastened without using this washer member, the height is slightly lower than the above height, but the fixing strength is lowered and the life is shortened. ing. In particular, when this fastening method is used for a bag or a bag, the height of the caulking portion affects the product, and the lining attached to the bag or the bag is easily rubbed during use. Moreover, in the school bags used by elementary school students, those with a low caulking part are used as much as possible because they are carried on the back. However, when used for many years, this gives a sense of incongruity to the back. In addition, since most of the rivets used in these are made of metal, there is a problem in weight reduction, or separation and disposal is necessary due to recycling problems in disposal, but the work is troublesome. Etc. have arisen.

  A first object of the present invention is to obtain a washer member that solves such a problem and has a caulking portion as low as possible and obtains a stable caulking fixing force. Is to obtain a method of caulking a rivet that allows a low caulking height in caulking to a fastened object.

  A first object of the present invention is a washer member 20 used to fasten mutually fastened objects 10 and 12 with a rivet 1, and a loose insertion hole 21 into which the rivet 1 is inserted is formed. The seating surface 22 around the loose insertion hole 21 has a stepped shape having a protruding portion 22a in which the center side of the loose insertion hole 21 protrudes from the outside. Provided is a washer member 20 in which a receiving portion 23 having a predetermined thickness is formed between the seating surface 22 and the opposite surface so that the caulking portion 6 is received in the receiving portion 23 when the rivet 1 is caulked. Is achieved. In addition to this structure, the seating surface is formed with a flat contact surface 22b on the outside of the loose insertion hole 21 so as to contact the object 12 to be fastened, and the opposite surface is a contact surface in the cross section. Since the washer member has a shape connected with a curve so that the thickness increases from the end of 22b to the center side, damage to the lining is reduced.

  Furthermore, the second object of the present invention is to provide a through-hole 11 through which the leg 2 of the rivet 1 is inserted in one of the fastened objects 10 in the combination of caulking the fastened objects 10 and 12 with the rivet 1. The other fastening object 12 is provided with a guide hole 13 on the same center line as the through hole 11 and having a diameter larger than that of the through hole 11, and a projecting portion 22 a whose center side protrudes into the guide hole 13 can be inserted. When the rivet 1 is caulked on the opposite side of the seating surface 22 having the protruding portion 22a, the seating surface 22 is formed on the outer side from the center to be in contact with the article 12 to be fastened. A rivet caulking in which a washer member 20 having a storage portion 23 for accommodating one caulking portion 6 is positioned and the amount of protrusion of the caulking portion 6 of the rivet 1 is reduced when the objects to be fastened 10 and 12 are caulked. Method It is achieved by providing. In addition to this structure, the seating surface is formed with a flat contact surface 22b on the outside of the loose insertion hole 21 so as to contact the object 12 to be fastened, and the opposite surface is a contact surface in the cross section. By adopting a rivet caulking method using the washer member 20 having a curved shape from the end of 22b to the center side, the rivet caulking portion does not rise from the surface of the article to be fastened.

  According to the present invention, when the rivet is inserted into the object to be fastened and caulked in the washer member on the opposite side, the caulking part is directly caulked to the object to be fastened without using this washer member. Compared to the case, a part of the washer member is fitted in the fastened object, that is, the caulking portion of the rivet is positioned in the fastened object, so that the caulking height from the surface of the fastened object is It becomes extremely low and the caulking part does not get in the way when using a bag or bag. Even if the caulking height is lowered in this manner, the caulking fixing strength does not decrease, and the caulking life is long. Furthermore, when a bag or a bag is manufactured by the caulking method of the present invention using this washer member, the lining stretched on these rubs against the caulking portion during use is reduced. In particular, the school bag used by elementary school students has a low caulking portion, so that even if the school bag using this is carried on the back, there will be no sense of incongruity that something hits the back. In addition, since these rivets and washer members are made of resin, the weight reduction of the product can be promoted, and even when discarded, there is a specific effect such that separation and disposal are facilitated, and labor for the work is eliminated. .

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2, reference numeral 1 denotes a rivet having a bottomed hole 3 in a leg 2 and a head 4 having a larger diameter than that of the leg 2 at one end. 10 is inserted into a through-hole 11 formed in 10. The material of the rivet 1 is made of metal, resin, or the material to be fastened 10 and 12, and a specific example of the rivet 1 will be described with the resin rivet 1 in the present invention. The through hole 11 is formed on the side of the fastened member 10 that contacts the head seating surface of the rivet 1 via the resin washer 5, and the other fastened member 12 has the through hole 11. A guide hole 13 having a large diameter, that is, approximately twice the diameter of the through hole is formed. The guide hole 13 is fitted with a protruding portion 22a of a washer member 20 that contacts the fastened member 12, and the washer member 20 has a disk shape as an example. The diameter of the guide hole 13 is arbitrarily set according to the size of the washer member 20 used.

  As shown in FIG. 4, the washer member 20 has a loose insertion hole 21 into which the leg 2 of the rivet 1 can be loosely inserted, and the center of the loose insertion hole 21 is the seat. The surface 22 protrudes in a truncated cone shape to form the protruding portion 22a. This protrusion height is the maximum thickness of the object 12 to be fastened, and the range of the protrusion height is at least about half of that, and is usually about 2/3 of the thickness of the object 12 to be fastened. ing. The periphery of the frustoconical protrusion 22 a of the washer member 20 is flat over the outer periphery of the washer member 20, and the flat seat surface 22 is a contact surface 22 b in contact with the surface of the fastened object 12. .

  On the other hand, the protrusion 22a has a predetermined thickness (t) on the opposite side of the seating surface 22 from the seating surface 22 and has a predetermined thickness (t) sufficient to produce a strength that is not destroyed by caulking. A storage portion 23 having a bottomed conical hole shape similar to 22a is formed, and the depth of the storage portion 23 is equal to or slightly deeper than the height of the caulking portion 6 when the rivet 1 is caulked. ing. By having this depth, the caulking portion 6 does not protrude from the washer member 20. The surface of the washer member 20 opposite to the seating surface 22 has an outer peripheral side, i.e., the end of the seating surface 22 is relatively thin and the center side has a relatively thick thickness. The washer member 20 has a curved shape that is connected so as to increase, and the outer periphery of the washer member 20 is formed to be relatively large so that the contact surface 22b of the seating surface 22 is sufficiently in contact with the article 12 to be fastened. These washers 20 are made of resin, and polybutylene terephthalate, polypropylene, nylon, polyacetal, polycarbonate or the like is used depending on the caulking strength. In place of the resin washer member 20, even if the washer member 20 is made of metal, there is no particular influence depending on the application.

  As shown in FIG. 3, the combined operation of caulking the objects to be fastened 10 and 12 with the rivet 1 using the washer member 20 having such a configuration is shown in FIG. A through hole 11 to be inserted is opened, and a guide hole 13 having a larger diameter than the through hole 11 is formed in the other fastening object 12 on the same center line as the through hole 11. Then, a protrusion 22a protruding from the center of the washer member 20 with respect to the guide hole 13 is inserted into the through hole 11, and the leg 2 of the rivet 1 is inserted into the through hole 11, and the leg 2 of the rivet 1 with the anvil 30 of the caulking machine. In response, the head 4 is pressed and crimped by the stem 31 opposite to the stem 31. As a result, the leg portion 2 of the rivet 1 having the bottomed hole 3 is caulked in the storage portion 23 of the washer member 20 as shown in FIG. 1, and the fastened objects 10, 12 are attached to the head 4 of the rivet 1. It is sandwiched and fixed between the washer 5 in contact with the seat surface 22 of the washer member 20. Accordingly, the caulking portion 6 is accommodated in the accommodating portion 23 of the washer member 20, and the height thereof is the thickness (H) of the washer member 20. As a result, the caulking portion 6 does not protrude from the surface of the washer member 20, and the amount of protrusion of the caulking portion 6 of the rivet 1 from the object to be fastened 12 decreases when the objects to be fastened 10 and 12 are caulked. .

  FIG. 5 shows another embodiment of the present invention, which is fixed to a substrate (not shown) constituting a back plate (not shown) of a school bag (not shown) and has a handle (not shown). A washer member 20 also serving as a reinforcing member for fixing a back strap (not shown) or a backpack (not shown), and protrusions 22a are formed at three locations. These projecting portions 22a also have the same cross-sectional shape as described above, so that the caulking portion 6 of the rivet 1 does not project from the washer member 20. The washer member 20 may have a shape other than those shown above, and any shape can be used as long as it has the shape of the protruding portion 22a having the storage portion 23 for receiving the caulking portion 6 of the rivet 1. There may be.

It is a principal part sectional front view showing an embodiment by the present invention. It is a bottom view of FIG. It is a principal part sectional front view showing the caulking start state of the present invention. It is a partial cross section front view of a washer member. It is the top view which looked at the another washer member of this invention from the protrusion part side. It is a principal part cross-sectional front view which shows a prior art example. It is a principal part cross-sectional front view which shows another prior art example. It is a principal part cross-sectional front view which shows another another prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rivet 2 Leg part 3 Bottomed hole 4 Head 5 Washer 6 Caulking part 10 Fastening object 11 Through hole 12 Fastening object 13 Guide hole 20 Washer member 21 Free insertion hole 22 Seat surface 22a Protrusion part 22b Contact surface 23 Storage part 30 Anvil 31 Stem

Claims (4)

  A washer member (20) used for fastening the objects to be fastened (10) and (12) with the rivet (1), and forming a loose insertion hole (21) through which the rivet is inserted, The seating surface (22) around the loose insertion hole has a stepped shape having a protruding portion (22a) in which the center side of the loose insertion hole protrudes from the outside. A storage portion (23) having a predetermined thickness is formed between the opposite surface and the seat surface, and the crimp portion (6) is stored in the storage portion when the rivet is crimped. Washer member.   The seat surface is formed with a flat contact surface (22b) on the outside of the loose insertion hole so as to contact the object to be fastened, and the opposite surface has a thickness from the end of the contact surface to the center side in the cross section. The washer member according to claim 1, wherein the washer member has a shape connected by a curve so as to increase.   In a combination in which the objects to be fastened (10) and (12) are caulked with rivets (1), one of the fastened objects (10) has a through hole (11) through which the leg (2) of the rivet is inserted. A guide hole (13) having a diameter larger than that of the through hole is formed on the other fastening object (12) on the same center line as the through hole, and a projecting portion (22a) whose center side protrudes into the guide hole. When the rivet is caulked on the opposite side of the seating surface, which can be inserted and formed on the opposite side of the seating surface having the seating surface (22) in contact with the article to be fastened. The washer member (20) having the storage portion (23) for receiving the rivet caulking portion (6) is positioned so that the protruding amount of the rivet caulking portion is reduced when the objects to be fastened are caulked. A characteristic rivet caulking method. The seat surface has a flat contact surface on the outside of the loose insertion hole so as to be in contact with the object to be fastened, and the opposite surface is connected with a curve from the end of the contact surface to the center side in the cross section. 4. A rivet caulking method according to claim 3, wherein a washer member having a shape is used.

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