JPH0194801A - Eyelet - Google Patents

Abstract

PURPOSE: To surely fix an eyelet so as not to be detached even in case of a cloth of large stitches such as knit by strongly fixing the eyelet onto the cloth by nipping the cloth at two positions inside and outside the eyelet. CONSTITUTION: A main body 10 of eyelet is provided with a cylindrical part 10a and a cover ring 10b continued to this part 10a and bent toward the outside. Besides, a washer 11 has an opening part 11a to fit the cylindrical part 10a of the main body 10 at its central part and around this opening part 11a, a 1st bent part 11b projected toward the side of the cover ring 10b and a 2nd bent part 11c continued to this part 11a and recessed toward the side of the cover ring 10b are provided. Then, a diameter of the cover ring 10b is set shorter than a diameter D4 of the washer 11 just for thickness. Namely, since the cloth is crimped at two positions inside and outside the eyelet, the eyelet can be strongly fixed onto the cloth, and the eyelet can be surely fixed onto the cloth of large stitches such as knit.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to eyelets, and more particularly to eyelets that are most suitable for attachment to cloth products.

[Conventional technology 1 The structure of a conventional eyelet is shown in FIGS. 9 to 14.

Figures 9 to 11 explain the structure of a so-called two-seat type eyelet. In the figures, the reference numeral 1 is the eyelet body (hereinafter abbreviated as the body), which is formed into a funnel shape as a whole. It has a short cylindrical part 1a and a widened part 1b continuous to this, and the large diameter side of the widened part 1b is a curved part 1C that is folded back in an arc shape toward the outside. A flat portion 1d is formed on the outer peripheral edge of 1C over the entire circumference.

On the other hand, the one indicated by code 2 is a washer, with one in the center and one in the wide end.
An opening 2a is formed into which part b fits halfway.

The peripheral edge of the opening 2a is a flat part 2b, and the outer periphery of this flat part is continuous with a curved part 2C bent in an arc shape from the lower side to the upper side in FIG. The periphery is folded inward, 1g52
d. ' This folded portion 2d is located at the center of the flat portion 1d of the main body 1.

On the other hand, what is indicated by the reference numeral 3 is a cloth fabric (hereinafter referred to as cloth) to which an eyelet is attached, and an opening 3a is formed in the part where the eyelet is attached, which is large enough to fit up to the middle of the wide end part 1b of the main body 1. ing.

The above-mentioned two-seater eyelet of the groove path is attached to the cloth 3 as shown in FIG.

That is, a fixed mold 4 and a movable mold 5 are prepared. The fixed mold 4 is placed on the lower side and has a truncated conical protrusion 4a in the center,
A groove 4b having an arcuate cross section is formed in an annular shape surrounding the base of the protrusion 4a. On the outside of this concave line 4b, there is a seat 4 that receives the curved part 2C of the washer 2.
C is formed into a ring.

The movable mold 5 is formed into a cylindrical shape, and has an opening 5a in the center thereof into which the protrusion 4a is fitted, and a circular shape in the lower end into which the curved part 1C of the main body 1 is fitted. The grooved strip 5b having an arcuate cross section is formed in an annular shape.

Using the mold having the above-described structure, the washer 2 is placed on the fixed mold 4 with the movable mold 5 spaced upward, and the cloth 3 is placed on top of the washer 2. At this time, the protrusions 4a are fitted into the respective openings 2a and 3a to perform positioning.

Then, the main body 1 is placed on the fixed mold 4 while being fitted along the outer periphery of the protruding portion 4a.

In this state, one end of the cylindrical portion 1aT is fitted into the opening 3a of the cloth 30.

When the movable mold 5 is lowered in this state, the four strips 5 at the lower end of the movable mold 5 are lowered.
b begins to push the curved portion 1C of the main body 1, so that the lower end of the cylindrical portion 1a is pressed into the groove 4b along the outer circumference of the base of the truncated conical projection 4a. Since the grooved line 4b has an arcuate cross-sectional shape, the cylindrical portion 1a is rounded outward and caulked toward the lower surface of the flat portion 2b of the washer 2.

Further, the folded portion 2d of the curved portion 2C of the washer 2 is also pressed and caulked toward the flat portion 1d of the main body 1 through the cloth 3, suppressing and holding the cloth 3 (see FIG. 11). The diagrams shown in Figures to Figure 14 are for explaining the structure of a so-called single-seat type eyelet, and the one indicated by the reference numeral 6 in the figure has a cylindrical part 6a and a curved part having an arcuate cross section continuous to the main body. 6b.

Further, what is indicated by the reference numeral 1 is a washer, which is formed in the shape of a disk, and near its outer periphery is formed an annular grooved groove 1a having an arc-shaped cross section that is concave toward the bottom in FIG. has been done.

This grooved line 7a is located inside the tip of the curved portion 6b of the main body 6. The tip of the curved portion 6b is located between the peripheral edge of the washer 7 and the groove.

Furthermore, an opening 7b into which the cylindrical portion 6a fits is formed in the center of the washer 1.

On the other hand, Fig. 13 shows the fixed mold 8 for attaching the eyelet,
The fixed mold 8 is placed on the lower side, a truncated conical protrusion 8a is formed in the center, and a groove 8b with an arcuate cross section surrounds the base of the protrusion 8a. is formed.

Moreover, the movable mold 9 is formed in a cylindrical shape, and an opening 9a into which the protrusion 8a fits is formed in the center, and a groove 9b into which the curved part 6b of the main body 6 fits into the lower end surface. is formed in a ring shape.

Using the main body 6 having the above-described structure and the washer 7, the upper and lower molds 8 are formed.
, 9 to attach the eyelets as follows.

First, as shown in FIG. 12, the washer 7 is placed on the underside of the cloth 3 with the openings 3a and rb aligned, and the cylindrical portion 6a of the main body 6 is inserted into the opening 3a from above the cloth 3.

7b. In this state, the cylindrical portion 6a is fitted along the outer periphery of the protruding portion 8a.

Next, when the movable mold 9 is lowered, the main body 6 is pressed downward through the curved part 6b and guided into the groove 8b of the fixed mold 8, and as shown in FIG. The lower fa portion is rounded, and the tip touches the outer side of the cylindrical portion 6a,
It is caulked until it contacts the lower surface of washer 7. □ Also, in the above-described operation, the tip of the curved portion 6b of the main body 6 and the upper surface near the outer peripheral edge of the washer 7 are strongly pressed through the cloth 3, and the cloth 3 is sandwiched between them (see Fig. 14). .

[Problem to be solved by the invention J] However, in the conventional eyelet structure described above, there is a gap between the flat part 1d and the folded part 2d in the two-seat type, and between the tip of the curved part 6b and the peripheral edge of the washer 7 in the single-seat type. The cloth 3 is held only between the upper surface and the upper surface.

Therefore, when the eyelet and the cloth 3 are pulled relatively, there is a problem that the clamping force is insufficient because the clamping portion exists only on one circumference, and the cloth 3 comes off. Such a phenomenon occurs particularly frequently when the cloth 3 is a knitted cloth, due to its excellent elasticity.

[Means for Solving the Problems 1] In order to solve the above-mentioned problems, the present invention provides a main body having a waist width that curves outward, and an opening into which a cylindrical portion of the main body fits into the central part. A first curved part curved in a convex manner toward the layer width side, and a second curved part continuous with the first curved part curved in the opposite direction. We adopted an eyelet structure consisting of a washer and a washer.

[Function] When the main body and the washer having the above-described structure are used, a fabric is interposed between them, and the main body is lowered using a caulking device, an opening having the same diameter as the cylindrical portion of the main body is formed in the fabric. At the same time, the lower end of the cylindrical part is rolled outward under the washer, and the waist width is also caulked outward, and the fabric is rolled in two places between the waist width and the washer: the inner circumference of the washer and the outer circumference. It is held between. As a result, the eyelet is fixed to the fabric with two-point support, so it is firmly fixed and will not come off even if an external force is applied, and the fabric will not be damaged.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

FIG. 1 to FIG. 8 explain one embodiment of the present invention, and FIGS. 1 and 2 show an eyelet having a 41S structure. In the figure, the symbol 10 is the main body, and the symbol 1
What is indicated by 1 is a washer.

The main body 10 is composed of a cylindrical portion 10a and a waist width 10b continuous with the cylindrical portion 10a and having an arcuate cross section. The waist width 10b is formed by being folded outward in an arc shape with a radius R1.

The washer 11 is formed into a dish shape, and a circular opening 11a is formed in the center. The diameter D2 of this opening 11a is slightly larger than the outer diameter D1 of the cylindrical portion 10a of the main body 100.

A first curved portion 11b with radius R2 is formed around this opening 11a toward the bottom in FIG. It is formed towards.

Further, the outer diameter D3 of the track wheel 10b of the main body 10 is smaller than the outer diameter D4 of the washer 11 by the thickness of the washer, and the thickness of the washer is slightly smaller than the thickness of the main body.

Also, the direction of the width of the waist of the main body 10 is F direction, and the washer 1
The outer periphery of the main body 10 is oriented upward, and the waist width of the main body 10 is 10.
The radius R1 of b is the radius R of the first curved portion 11b of the washer 11.
It should be about twice as large as 2.

The first curved portion 11b and the second curved portion 11C of the washer 11
The distance 1111d between the switching position J and the inside of the cylindrical portion 10a of the main body 10 is about three times the thickness of the main body 10.

(However, with the centers of the main body and washer aligned.) The radius R3 of the second curved portion 11c of the washer 11 is calculated by subtracting the distance d1 from the center of the washer to the switching position J from the outer diameter D4 of the washer 11. determined by the value.

By the way, when the main body 10 is fitted into the opening 11a of the washer 11, the periphery of the opening 11a of the washer 11 and the main body 1G
Assuming that the contact point is T (see FIG. 2 (B)), this position is located between the cylindrical portion 10a of the main body 10 and the wall thickness of the washer 11 from the bending start position R of the track wheel 10b toward the track wheel 10b side. It's located just a short distance away.

Further, in the above-described state, the distance δ between the outer periphery of the track wheel 10b and the outer periphery of the washer 11 is set to 0.1 to 0.2. The reason for this is that the larger δ is, the better the clamping force against the fabric will be, which will be described later. However, if the distance is 0.2 mm or more, there is a risk that the space between them will not be completely closed during caulking.

The eyelet having the structure described above is caulked by a caulking device as shown in FIG.

In FIG. 3, the reference numeral 12 indicates the upper die, and the reference numeral 13 indicates the lower die. The upper mold 12 moves up and down, but the lower mold 1
3 is fixed.

The upper mold 12 includes an upper frame 14 and a lower frame 15. Upper frame 1
4 is formed as a hollow frame body, and a large diameter portion 14 is formed in the middle of the frame body.
a, and a threaded portion 14b is formed at the upper end.

An O-rad 16 is fitted into the lower end of the upper frame 14 so as to be movable up and down. A large diameter portion 16a is formed at the upper end of the rod 16, and its lower end contacts a stepped portion 14d formed near the lower end of the center hole 14C of the upper frame 14 to prevent the rod 16 from being pulled out and falling. There is.

A spring 18 is loaded between the stopper 17 screwed into the upper end of the center hole 14C and the upper end of the rod 16, and is pressed so that the lower end of the O-rad 16 protrudes from the lower end of the upper frame 14. pressure is applied.

The diameter of the rod 16 is the same as the inner diameter of the cylindrical portion 10a of the main body 10.
is almost the same.

Further, at the lower end of the upper frame 14, a main body 1 is provided surrounding the rod 16.
A groove 14e into which the No. 0 track wheel 10b fits is formed.

On the other hand, the lower frame 15 is also formed hollow, and is fitted into the lower end portion of the upper frame 14 so as to be movable up and down. A large diameter portion 14r is formed at the lower end of the upper frame 14, and a stepped portion 15b formed inside the center hole 15a of the lower frame 15 comes into contact with the upper end of the large diameter portion 14r, and is locked to prevent it from falling off. ing.

A spring 10 stronger than the spring 18 is mounted between the large diameter portion 15c at the lower end of the lower frame 15 and the large diameter portion 14a of the upper frame 14.

By the way, the lower mold 13 is a cylindrical base 20 with an open upper end.
A fixed mold 22 is disposed at the center of the center hole 21. The fixed mold 22 has its lower end fixed to the bottom surface of the base 20 by a screw 23, and has a truncated conical bulge 24 projecting from the center of its upper end.

The bulging portion 24 is formed at the center of the upper surface of the disk portion 22a formed at the upper end of the fixed mold 22, and the bulging portion 240
A groove 25 having a new semicircular surface is formed around the entire circumference of the base.

A movable frame 26 is fitted into the upper end of the fixed mold 22 so as to be freely movable. The movable frame 26 is formed into a cylindrical shape, and a stepped portion 26a is formed along the entire circumference inside the movable frame 26. This stepped portion 26a is in contact with the lower surface of the disk portion 22a of the fixed mold 22.

A spring 21 is loaded between the bottom surface of the movable frame 26 and the bottom surface of the center hole 21, and constantly presses the movable frame 26 upward. It protrudes from the top surface of 20.

Next, a method for caulking eyelets using the upper and lower molds 12 and 13 having the above structure will be described.

First, as shown in FIG. 3, the upper mold 12 is raised. In this state, the rod 16 and the lower frame 15 are in the lowest position due to the force of the spring 18.10, and the rod 16 projects downward from the lower end of the lower frame 15.

In this state, the cylindrical portion 10a of the main body 10 is fitted onto the rod 16, and the upper side of the track wheel 10b is connected to the concave line 1 at the lower end of the upper frame 14.
4e. At this time, since the outer peripheral edge of the membrane width 10b is pressed against the inner peripheral surface of the center hole 15a of the lower frame 15, the main body 10 does not fall.

On the other hand, the opening 11a of the washer 11 is fitted into the bulging part 24 at the upper end of the fixed mold 22 of the lower frame 13, and the lower surface of the curved part 11c is brought into contact with the upper surface of the outer peripheral part of the disk part 22a. At this time,
The movable frame 26 of the lower mold 13 is at its upper limit due to the force of the spring 21 and protrudes from the upper end of the base 20.

In this state, the cloth 28 is placed in contact with the upper end of the movable frame 26.

The main body 1G, washer 11 and fabric 28 are prepared as described above.
The upper mold 12 is lowered in a state in which Rn is applied.

Then, first, the lower end of the protruding rod 16
8 and contacts the upper end of the bulging portion 24 at the upper end of the fixed mold 22. Continuing, the lower end of the lower frame 15 of the upper mold 12 is connected to the movable frame 26.
In contact with the upper end, the movable frame 26 is lowered against the pressing force of the spring 27 to be flush with the upper edge of the base 20, and the fabric 28 is sandwiched between the upper and lower molds 12 and 13.

If the upper mold 12 is further lowered in this state, the rod 16
bends the spring 18 and rises.

As a result, the upper frame 14 descends, the lower end of the cylindrical portion 10a of the main body 10 begins to bite into the fabric 28, the cylindrical portion 10a descends along the periphery of the bulge 24, and as a result, the fabric 28 It is cut and a circular piece of fabric 28a is punched out. At the same time, the lower end of the cylindrical portion 10a of the main body 10 is connected to the washer 11.
(See FIG. 4) When the upper mold 12 is further lowered, the lower frame 15 cannot be lowered, so only the upper frame 14 is lowered by bending the spring 10.

Then, as shown in FIG. 5, the lower end of the cylindrical portion 10a of the main body 10 advances along the groove 25 around the bulging portion 24 and begins to curve outward in an arc shape.

When the upper frame 14 further descends, the lower end of the cylindrical portion 10a further curves into an arc shape as shown in FIG.
The side is also curved outward, and the tip of the cylindrical portion 10a contacts a portion of the washer 11.

When the upper frame 14 further descends, the tip of the cylindrical portion 10a of the main body 10 becomes roughly rounded as shown in FIG. The circumferential edge of the opening 11a of the washer 11 is at the point T position of the main body 10, and the tip of the cylindrical part 10a is at the switching position f of the first and second curved parts 11b and 11c of the washer 11.
ffj, and the fabric 28 is held between the waist width 10b and the washer 11.

At this time, the lower end of the periphery of the opening of the fabric 28 is pressed against the inside of the waist width 10b by the inner periphery of the washer 11, as shown in FIG. be held between.

Further, in the state in which the cloth 28 is held in this manner, the distance δ shown in FIG. 2(B) is narrowed between the outer circumferential edge of the track 10b of the main body 10 and the outer circumferential edge of the washer 11.

Furthermore, as the caulking continues, the second curved portion 11C becomes the contact point ■
It is pushed upward using the fulcrum as a fulcrum, and the curvature of this part is made small, so that it is closely attached to the inside of the waist width 10b via the cloth 28.

Finally, the fabric is formed at two points: between the outside of the tip of the first curved portion 11b of the washer 11 and the waist width 10b, and between the outer circumferential edge of the track wheel 10b and the outer circumferential edge of the washer 11. to hold. Further, the periphery of the opening of the cloth 28 reaches inside the opening 11a of the washer 11.

Note that since the outer diameter of the waist width 10b is smaller than the outer diameter of the washer 11 by the thickness, the fabric 28 to be caulked is not cut.

[Effect 1] As is clear from the above explanation, according to the present invention, the fabric is held in two places, inside and outside of the eyelet, so instead of being supported at one point as in the past, the eyelet is supported on the fabric. It can be firmly fixed to fabrics with large stitches, such as knits, so that it does not come off.

In addition, with the conventional one-point support structure, the force is concentrated at one point when attaching and removing the eyelet, which could damage the fabric and cause it to come off.However, the present invention has two eyelets. Since it is a support, such a drawback does not occur.

[Brief explanation of the drawing]

Figures 1 to 8 illustrate one embodiment of the present invention.
Figure 1 is a vertical side view of the main body and washer, Figure 2 (A) is a side view of the main body and washer, Figure 2 (B) is a vertical side view of the body fitted to the washer, and Figure 3 FIGS. 4 to 7 are longitudinal side views of the crimping device; FIGS. 4 to 7 are longitudinal side views illustrating the progress of the crimping operation; FIG.
Figures to Figure 11 illustrate conventional two-seat eyelets.
Figure 9 is a vertical side view before caulking, Figure 10 is a vertical side view explaining the caulking process, Figure 11 is a vertical side view of the completed caulking state, and Figures 12 to 14 are conventional single-seat eyelets. Figure 12 is a longitudinal side view before caulking;
FIG. 13 is a longitudinal side view for explaining the caulking process, and FIG. 14 is a longitudinal side view of the caulking completed state. DESCRIPTION OF SYMBOLS 10...Main body, 10a...Cylindrical part, 10b...Waist width, 11...Washer, 11a...Opening part, 11b...
・First curved portion, 11c...Second curved portion, 12
...upper mold, 13...lower mold. Patent applicant: Ishii Kogyo Co., Ltd. Fig. 5 10 Main body 11b Curved portion 10a of curved portion 1 Cylindrical portion 1
1c...Second curved portion 10b...Layer width 12...Knocking mold 11......
Washer 13...Lower mold 11a...
...Opening part Fig. 6, Fig. 7, Fig. 10...Body 11b...Curved part 10a of sleeve sleeve 1...Cylindrical part 11
c...Curved part 10b of sleeve tube 2...Layer width
12... Knocking die 11... Bench/washer 13
・Concave lower mold 11a...Opening part Fig. 8 10L

Claims (3)

[Claims] (1) An eyelet main body 10 having a cylindrical part 10a and a track wheel 10b continuous with the cylindrical part 10a and curved outward, and an opening 11a in the center into which the cylindrical part 10a of the main body 10 fits. , a first curved portion 11b that is convex toward the track wheel 10b is provided around the opening 11a;
It consists of a washer 11 having a second curved part 11c that is continuous with this and is curved so as to be concave toward the track wheel 10b side, and the diameter of the track wheel 10b is smaller than the diameter of the washer 11. An eyelet characterized by being configured to be smaller by the thickness of the wall. (2) When the connection point between the cylindrical portion 10a of the main body 10 and the track wheel 10b is R, and the cylindrical portion 10a is fitted into the opening 11a of the washer 11, the inner peripheral edge of the opening 11a and the track wheel 10b are connected. The eyelet according to claim 1, wherein the distance between T and R is set to be approximately equal to the wall thickness of the washer, where T is the position where the base contacts the eyelet. (3) With the centers of the main body 10 and the washer 11 aligned, the inside of the cylindrical portion 10a of the main body 10 and the first
and the connection position of the second curved portions 11b and 11c is 1, which is approximately three times the wall thickness of the main body 10, according to claim 1 or 2. eyelet.