EP1935273B1 - Eye component and eye set into a material web - Google Patents

Abstract

The portion (1) has a ring-shaped neck (3) surrounding a neck opening (4) and a collar (2) formed from the neck opening. An eyelet is formed for bordering a free end of the neck in the direction to a lower side of the collar for interlocking. The collar has projections with a pressure surface at the free end pointing in a longitudinal direction of the neck. A bordered free end surface of the neck operates by the insertion of a material sheet against the pressure surface of the projections. The projections are arranged in a circular path.

Description

The invention relates to an eyelet with an annular neck which surrounds a neck opening and a neck integrally formed thereon from the neck opening, which eyelet, inserted in a material web, forms an eyelet, for clamping the same on a web of material, the free end of the neck in the direction to the bottom of the collar is beaded. Furthermore, the invention relates to such a material web inserted eyelet forming eyelet (see DE 9 405 177 U ).

Such eyelets are used to make eyelets inserted therefrom into a web of material. As a material web are typically tarpaulins, such as container tarpaulins. The eyelets used in such tarpaulins are needed to connect the tarpaulin to, for example, a container or commercial vehicle body for closing it. The tarpaulin is fastened to such a container by attaching the eyes to staples located on the container, through which a closing cable is then guided past the outside of the eyes. However, this is only one example of many applications for such Ösenteile.

The insertion of the Ösenteile in the web takes place by means of a forming process, in which the neck is beaded beginning with its free end to the outside until the web is clamped to the desired extent between the beaded neck portion and the underside of the collar. The eyelet is then clamped to the web and forms an eyelet. For passing the neck through the material web, an opening is made beforehand, typically by punching a hole in the material web.

Such eyelets are created among other things from one-piece Ösenteilen. In contrast to eyelets, which are formed from two parts - an eyelet and a collar disc - is used in one piece set Ösenteilen no collar disc on which the beaded neck portion for clamping the web between the collar and the collar disc acts. With one-piece eyelets the beaded effect free end of the neck directly on top of the web.

A formed of a one-piece eyelet, inserted into a web eyelet is in DE 100 39 462 C2 described. The eyelet described in this document is characterized in that the free end of the neck of the eyelet has projections extending longitudinally of the neck. In the course of the crimping process for inserting this Ösenteils in a web of material, the projections are crimped with such a radius and the crimping continued so long, so that the Ösenteil pointing inwardly facing surfaces of the projections parallel to the underside of the collar and thus to the underside of the collar facing are. These surfaces of the projections act with the interposition of the material web against the underside of the collar and dig in the course of the crimping process to achieve the desired clamping in the web. The impressions of the projections in the material web serves the purpose of forming a web stage in front of the end face of the projections. After completion of the beading, which extends to achieve the bracing spiral over about 270 °, the projections are in a spatial position in which the longitudinal axis of the projections are aligned in the radial direction to the neck.

The spiral curling of the free end of the neck with its projections, which is necessary for achieving the desired clamping on the material web, involves the risk that material of the web is drawn in through the crimping process in the direction of the neck of the eyelet. This is undesirable. Pulling material of the web into the eyelet interior, when inserting a plurality of eyelets, such as along an edge of a tarp, results in a shortening of the web over its length, which shortening will be so considerable, depending on the number of eyelets inserted along such edge can, that the equipped with the eyelets tarp is unusable to each other due to the shortened by the drawing of material eyelet spacing. Moreover, drawing in material can result in wrinkling, which is also to be avoided.

Furthermore, it is disadvantageous in these eyelets that, with a tensile load acting on the material web, only individual projections of a respective one adjacent tensile load are opposite, while others point in the direction of the tensile load. The result is an increased stress on the material web in front of the protruding against the applied tensile load projections, which in turn can lead to damage to the web and tearing out of the eyelet.

Another one-piece eyelet is off US 2,107,375 known. Also, this prior eyelet carries at the free end of the neck in the axial direction of the neck facing projections. The free end of the neck of this eyelet is crimped so far that burrows the free end of the neck with its projections in the web. The abutment, against which the beaded neck end acts to clamp the material web, is formed by the back of the collar. Even with this eyelet can not be completely ruled out that when inserting the eyelet material is drawn from the hole edge area in the direction of the neck, if not stopped in time depending on the thickness of the web of the hemming. In order to ensure a clamping of the eyelet to the web without pulling material, the neck length of the eyelet and the set for performing the crimping Flare must be matched to the thickness of the material web. Therefore, these eyelets must be adapted to the thickness of the material web with regard to their neck length. The same applies ultimately also for eyelets according to DE 100 39 462 C2 ,

Both aforementioned Ösenteile can be used to achieve the desired clamping on the hole edge region of the web only in one piece and thus without collar disc.

Out DE 94 05 177 U1 is an eyelet for curtains known. This eyelet is a one-piece eyelet. On the collar inside a circumferential ring and this evenly distributed projecting tips are formed. This eyelet is flanged so that the detected curtain is caught in a labyrinthine manner between the tips and the flared neck end. However, this eyelet is not suitable for the purposes for which the other eyelets described above are suitable.

Based on this discussed prior art, the invention is therefore the object of developing an aforementioned Ösenteil or inserted into a material web and thus an eyelet-forming eyelet such that this not only has more favorable conditions for a higher requirements enough Auszugsfestigkeit, but in which the disadvantages pointed out in relation to the above-discussed prior art with respect to a variability of the use of the Ösenteile while avoiding a retraction of material when setting the eyelet are avoided.

This object is achieved by an initially mentioned, generic eyelet, in which the collar of the eyelet has several, pointing in the longitudinal direction of the neck projections each having a pressure surface at the free end and a beaded portion of the neck with the interposition of the hole edge region of the web against the pressure surfaces the protrusions of the collar acts according to claims 1 and 2.

When created from this eyelet, inserted into a web loop the free end of the neck acts against the protruding from the back of the collar projections, with the interposition of the material web. Thus, the web is pressed by the flanged in the course of the insertion neck portion against the projections or the pressure surfaces formed by the projections. Since webs in which such eyelets are used, are typically not only flexible but also yielding, the projections press into the web. At the same time, the projections for the flanging form a stop, with the result that further curling of the free end of the neck is virtually blocked. For this purpose, the projections preferably have a certain areal extent, in particular in the radial direction, relative to the longitudinal axis of the neck opening.

In principle, it does not matter which portion of the beaded neck acts against the projections or the contact surfaces provided by the projections as an abutment for clamping the hole edge region of the material web. Preferred is an embodiment in which the end face of the free end of the neck portion with the interposition of the material web for clamping the same acts against the projections. The expansion of the free end face in the radial direction, which acts against the pressure surfaces of the projections, is quite small compared to the pressure surface formed by the projections in this extension. In this embodiment, the crimp limitation is particularly effective.

By the beaded portion of the neck is from the back of the carrier web one of the ring shape of the beaded neck portion corresponding Provided pressure surface with which the material web is pressed with its opposite surface to the projections. The height of the projections is preferably dimensioned such that the neck section formed by the crimping process acts exclusively against the pressure surfaces of the projections and not also against the rear side of the collar. The clamping force provided by the clamping is concentrated in this eyelet on the pressure surfaces of protruding from the back of the collar protrusions, so that a particularly effective clamping of the eyelet used is given to the web. Such an eyelet inserted into a material web can withstand even high pull-out forces.

With this eyelet inserted into the material web, all protrusions projecting from the collar represent a pull-out obstacle when a tensile load acts on the material web. This is one reason why this eyelet inserted into a material web can withstand high tensile loads without tearing out.

The projecting from the back of the collar protrusions can be created in different ways. For example, it is possible to make the projections by making an impression on the front side (outer side) of the collar, so that each projection is formed in the manner of a bead. According to a further embodiment, it is provided that such an indentation in the region of the deepest of the same is torn open, thus the projection has an opening. By tearing open such a projection, the effective pressure structure increases by forming a ring structure with a larger diameter than when the impression is not open. In addition, through the then created opening, is pressed into the material of the material web, provided a further Ausreißhindernis.

In the case of the claimed eyelet used in a material web, the aim is to concentrate the clamping force provided by the crimping on the pressure surfaces of the projections and thereby to increase the surface pressure in the region of the trapped material web sections. When providing protrusions with a round or rounded lateral surface satisfactory Ausreißergebnisse even then achieved when the projections penetrate the web.

Fig. 1:

eine Draufsicht auf ein Ösenteil zum Einsetzen in eine Materialbahn,

Fig. 2:

einen Längsschnitt entlang der Linie A-B der Figur 1 durch das Ösenteil der Figur 1,

Fig. 3:

eine vergrößerte Darstellung des linken Abschnitts des Ösenteils der Figur 2,

Fig. 4:

das in eine Materialbahn eingesetzte Ösenteil der Figuren 1 bis 3 im Bereich des Abschnittes der Figur 3,

Fig. 5:

in einem Ausschnitt eine Draufsicht auf ein weiteres Ösenteil,

Fig. 6:

einen Querschnitt durch das Ösenteil der Figur 6 entlang der Linie C-D,

Fig. 7:

eine Querschnittdarstellung entsprechend der Figur 6 durch das in eine Materialbahn eingesetzte Ösenteil,

Fig. 8:

einen Schnitt durch das in eine Materialbahn eingesetzte Ösenteil entsprechend der Schnittlinie E-F der Figur 5 und

Fig. 9:

eine weitere, in eine Materialbahn eingesetzte Öse gemäß einer modifizierten Ausgestaltung zu dem in Figur 4 dargestellten Ausführungsbeispiel.

The invention is described below by means of embodiments with reference to the accompanying figures. Show it:

Fig. 1:

a top view of an eyelet for insertion into a material web,

Fig. 2 :

a longitudinal section along the line AB of FIG. 1 through the eyelet of the FIG. 1 .

3:

an enlarged view of the left portion of the eyelet of the FIG. 2 .

4:

the eyelet used in a web of the FIGS. 1 to 3 in the area of the section of FIG. 3 .

Fig. 5:

in a section a plan view of another eyelet,

Fig. 6:

a cross section through the eyelet of the FIG. 6 along the line CD,

Fig. 7:

a cross-sectional view according to the FIG. 6 through the eyelet used in a material web,

Fig. 8:

a section through the inserted into a web eyelet according to the section line EF of FIG. 5 and

Fig. 9:

another, inserted in a web eyelet according to a modified embodiment of the in FIG. 4 illustrated embodiment.

An eyelet 1 comprises a collar 2, which is integrally formed at the one end of a hollow cylindrical neck 3 in the radial direction outwardly protruding on the neck 3. The neck 3 includes a neck opening 4. The collar 2 consists in the illustrated embodiment of a curved in the manner of an annular bead portion 5 and an au-βenseitig thereon molded flange portion 6. The free end of the neck 3 has an end face 7. In the curved portion 5 more, with the same angle portion arranged mutually impressions 8 are introduced into the collar 2. By the impressions 8 2 protrusions 9 are formed from the underside of the curved portion 5 of the collar. By the embossing process, the material of the eyelet 1 is broken in the illustrated embodiment, so that the projections 9 have a central opening 10. The projections 9 have a frustoconical habit. The illustrated in the figures lower end of the projections 9 serves as a pressure surface 11. The pressure surface 11 of the illustrated embodiment is annular. Depending on the design of the embossment for forming projections, it may happen that such a projection is divided in the region of its lower end. The dividing plane is usually in a radial direction, with the result that the final formation of such a projection is formed by two semicircle segments spaced apart from one another.

The eyelet 1 is used to form an eyelet in a material web. For this purpose, the eyelet 1 is used with a Öseneinsetzmaschine in a material web, such as a tarpaulin for closing a container or commercial vehicle body. The inserted into a material web 12 eyelet 1 is in FIG. 4 shown. The eyelet 1 now forms an eyelet 13 in the material web 12. For insertion of the eyelet 1 in the web 12, the free end of the neck 3 has been pressed with its end face 7 by a flaring having Bördelwerkzeug for flanging the neck. The radius of the flanging groove is chosen so that the flanging of the free end of the neck in the axial direction against the pressure surfaces 11 of the projections 9 acts. In the embodiment shown in the figures, it is provided that the end face 7 acts as a beaded neck portion against the pressure surfaces 11 of the projections 9, as this in FIG. 4 is shown as an example. The end face 7 acts as an annular pressure surface on the rear side 14 of the material web 12 and presses it with its front side 15 against the contact surfaces 11 of the projecting from the curved portion 5 projections 9. In the material web shown in the figures is a plastic sheet, the also glass fiber reinforced can be. The height of the projections is dimensioned in the illustrated embodiment so that the end face 7 of the neck 3 acts to clamp the eyelet 13 on the material web 12 exclusively against the pressure surfaces 11 of the projections 9. As a result, in the region of the pressure points 11, a very high surface pressure acting on the material web 12 is achieved. Due to the yielding properties of the material web 12, the projections 9 are pressed with their contact surface 11 in the front side 15 of the material web 12. As a result of the high surface pressure acting on the material web 12 via the projections 9, a very effective and particularly effective clamping of the eyelet 13 to the material web 12 is achieved. In particular, of the projections 9, which all have an equal height, compensated for flaring tolerances. The longitudinal extension of the projections is aligned parallel to the longitudinal axis of the neck 3.

When applying a tensile load on the web 12 or vice versa on the eyelet 13 on the web 12 shows that due to the alignment of the projections 9 with their Andruckflächen 11 regardless of the direction of the applied tensile load this equally across all Verklammerungsstellen evenly in the web 12 or vice versa introduced into the eye 13. Also here is the achievable with the eyelet 1 particularly high pull-out strength justified.

The penetration of the projections 9 in the front 15 of the web 12 also acts as a seal, so that moisture can not penetrate into the interior of the web 12 clamped to the web 12.

FIG. 5 shows a ring-segment-like section of a plan view of another eyelet 16. The eyelet 16 is basically constructed as the eyelet 1, but has over the eyelet 1, however, another embodiment of its projections. To form the projections of the eyelet 16, a U-shaped cut 18 has been made in the curved portion 17 of the collar for each projection. The tab created in this way has been bent downwards in a further processing step and thus in the direction of the free end of the neck 19, so that these bent tabs 20 form the protruding from the collar 21 projections. The lower free end of this Tabs 20 each forms a pressure surface 22 (see. FIG. 6 ). The tabs 20 have a certain extent in the radial direction with respect to the longitudinal axis of the neck 19 of the eyelet 16. This serves the purpose of forming a sufficiently long, effective in this direction abutment, so that even when crimping tolerances of the beaded neck portion acts against the pressure surfaces 22. In principle, the edges facing the free neck end can also have a different extent than the radial extent shown in the figure.

FIG. 7 shows the inserted into a material web 23 eyelet 16, which now forms the eyelet 24. The clamping of the eyelet 24 to the web 23 is subject to the same principles as this to the eyelet 13 of FIG. 4 is described. Thus, the beading of the free end of the neck 19 of the eyelet 16 has been carried out so that the end-side end face 25 acts against the pressure surfaces 22 and the projections 20 serving as tabs. The tabs 20 are pressed into the material web, as this in FIG. 7 is shown schematically. To clarify the Verklammerungssituation the eyelet 24 in the web 23 is in FIG. 8 a sectional view corresponding to the section line EF of FIG. 5 shown. In this illustration, the formation of the projections by the fold of the tabs 20 can be seen.

FIG. 9 shows by way of example that the eyelet 1 of the FIGS. 1 to 4 to form an eyelet 26 can also be used with the aid of a collar plate 27 in a web 28. The protruding from the collar 2 projections 9 also act when using a collar plate 27; These are equally pressed into the web 28. The desired high surface pressure on the material web 28 is achieved even when using a collar plate 27. Thus, the eyelet 1 - the same applies to the eyelet 16 - are readily used with and without collar disc in a web.

In the figures, exemplary embodiments are shown in which the eyelets act with their free beaded neck end or with the edge formed by the neck end against the material web or the collar disc. The invention can equally be realized by crimping the neck in a narrower radius and then with a section its outer side formed by the beading acts against the pressure surfaces of the projections for clamping the material web between the projections and this outer side of the beaded neck.

LIST OF REFERENCE NUMBERS

1

eyelet

2

collar

3

neck

4

neck opening

5

section

6

flange

7

face

8th

impressing

9

head Start

10

perforation

11

pressure surface

12

web

13

eyelet

14

back

15

front

16

eyelet

17

curved section

18

incision

19

neck

20

flap

21

collar

22

pressure surface

23

web

24

eyelet

25

face

26

eyelet

27

collar disc

28

web

Claims (8)

1. Eye component for inserting into a material web in order to form an eyelet, said eye component (1, 16) having a ring-shaped neck (3, 19) surrounding a neck opening (4) and a collar (2, 21) formed from the neck opening (4), characterised in that the collar (2, 21) of the eye component (1, 16) has several projections (9, 20) pointing in a longitudinal direction of the neck (3, 19) each with a pressure surface (11, 22) at the free end, so that a bordered section (7, 25) of the neck (3, 19) can operate, by the insertion of the material web (12, 23, 28), against the pressure surfaces (11, 22) of the projections (9, 20) of the collar (2, 21).
2. Eyelet made from an eye component and inserted into a material web, said eye component (1, 16) having a ring-shaped neck (3, 19) surrounding a neck opening (4) and a collar (2, 21) formed from the neck opening (4) and, in said eyelet (13, 24, 26), for stapling it to the material web (12, 23, 28), the free end of the neck (3, 19) being bordered in a direction towards the underside of the collar (2, 21), characterised in that the collar (2, 21) of the eye component (1, 16) has several projections (9, 20) pointing in a longitudinal direction of the neck (3, 19) each with a pressure surface (11, 22) at the free end and a bordered section (7, 25) of the neck (3, 19) operating, by the insertion of the material web (12, 23, 28), against the pressure surfaces (11, 22) of the projections (9, 20) of the collar (2, 21).
3. Eye component according to claim 1 or 2, characterised in that the bordered free face end (7, 25) of the neck (3, 19) operates against the pressure surfaces (11, 22) of the projections (9, 20) of the collar (2, 21).
4. Eye component according to one of the claims 1 to 3, characterised in that the projections (9, 20) of the collar (2, 21) are arranged in a circular path and each have the same height.
5. Eye component according to one of the claims 1 to 4, characterised in that the projections (9, 20) of the collar (2, 21) are arranged at the same angular distance from one another.
6. Eye component according to one of the claims 1 to 5, characterised in that the projections (9) are formed by impressions (8) introduced in the outside of the collar (2) pointing away from the free end of the neck (3).
7. Eye component according to one of the claims 1 to 6, characterised in that the collar (2, 21) is formed as a ring-shaped beading or has such a section (5, 17) and the projections (9, 20) are arranged in the curved section (5, 17) of the collar (2, 21).
8. Eye component according to one of the claims 1 to 7, characterised in that the eyelet (26) formed from the eye component (1) is stapled to the material web (28) by the insertion of a collar disk (27).

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