EP2424399B1 - Closure part - Google Patents

Description

The invention relates to a closure part, in particular for the formation of hermaphroditic closures, according to the features in the preamble of claim 1.

As part of adhesive closures, as they have become widely known under the brand name "burrs", such closure parts have a corresponding plurality of closure bodies, wherein the hooking bodies are fixed at the end of their stems to a base body forming the support structure, which is a plate-like structure, preferably made of a good sprayable plastic material. In this case, the closure bodies are distributed in an arrangement in such a way that the hooking heads projecting above the base body are arranged at such distances from one another that a hooking engagement with the hooking heads of a further closure part which completes the adhesive fastening is achieved. If the interlocking heads of both cooperating closure parts are the same shape, one speaks of hermaphroditic closures.

At one off DE 10 2005 048 215 A1 known closure part of this type each form two closure body a cramped or U-shaped pair, in which two stems are integrally connected to each other at their foot sides via a transverse intermediate element. The attachment to the Base body is effected in that the stems of each pair are inserted from the back of the body forth through openings in the body, wherein the transverse intermediate member may be recessed at the back of the body in a recess extending between the openings.

On one off US 5,799,378 Known closure part are arranged in two sets each parallel to each other extending walls in a lattice structure, wherein the sets of walls intersect at right angles. At the intersection of the walls Verhakungsköpfe of closure bodies are arranged. The mushroom-shaped interlocking heads may be formed integrally with the walls, preferably of a plastic material. The distances or sections between the walls are selected such that when a second closure part abuts the interlocking heads engage in the respective free spaces of the lattice structure and hooked by reaching under the hooking of the first closure part in this.

Out DE 60 2004 007 373 T2 For example, woven closure products with improved flame resistance properties have become known. A woven closure product includes a loop component and a hook component designed to engage the loop component. The components each include a plurality of loops which are woven into a fabric base. The fabric base includes woven, flame resistant fibers of a polymer that melts or dissolves when exposed to a flame.

DE 693 19 608 T2 discloses an interlocking fastener which is advantageously used to fasten a window to a window frame of a motor vehicle. The fastener has a base part and a plurality of parallel engaging strips protruding from and protruding from the base part. The engaging strips each have a vertical part adjacent to the base part, a head part adjacent to the vertical part, and two end faces. The engaging strips are adapted to engage a protruding head portion of an opposing fastener, the head portion of the engaging strips having a plurality of transverse slots and the vertical portions remaining unslotted. The transverse slots facilitate sliding engagement of the fastener with an opposing fastener.

From the US 4,001,366 shows a closure member for a self-locking closure, the Verhakungselemente are intended to come with a filament having opposite engage. The Verhakungselemente are made of profiles by Wegfräsen profile sections.

The WO 94/09279 also discloses a profiled closure member in which support walls extend perpendicularly and spaced apart from support walls having mushroom top shells on the top. The tops can be slit.

In the EP 0 931 472 A2 single closure elements are disclosed which protrude from a carrier plate. The closure elements each have a vertex, projecting from the arms side of the closure element. The production of the closure part also takes place via a profile, wherein subsequently the material is cut away between the closure elements.

By the AT 264770 includes a device for releasably, invisibly attaching plate-shaped parts to the prior art. On a support plate a grid of support walls is formed, wherein on equidistant Cross points of the support walls thickened coupling elements are placed.

The invention has for its object to provide a closure part of the type considered available, which is characterized by particularly good performance characteristics.

According to the invention this object is achieved by a closure part having the features of claim 1 in its entirety. The closure part according to the invention, in particular for the formation of hermaphroditic closures, is characterized by at least one web-shaped carrier tape which has at least one pair of oppositely arranged surface regions which can be connected at least partially along a connection region to a base body as a third component, and which at least in part Surface areas that are outside the connection area and adjacent to this, individual closure body are provided, which form from the carrier tape projecting a fixing possibility for further closure parts of the same or different kind.

The arrangement is such that in each case two closure bodies, which lie flush on one side and the other side of the carrier strip extending between them, together form a composite closure element. Such a composite closure element can be formed by two equally shaped closure body, wherein preferably on the carrier tape rows of the same distance from each other, assembled closure elements are formed.

Alternatively, on the one side and the other side of the carrier tape each have a row of the same distance from each other arranged closure bodies formed, wherein the rows are offset from each other such that the closure body of one row are each in the space between the closure bodies of the other row.

Accordingly, a significant feature of the invention is that the closure body are connected by a carrier tape with each other at a distance that is substantially parallel to the respective closure body and not transverse thereto as in known solutions in which the stem of the respective closure body in a vertical arrangement in a support surface merges and is usually one-piece part of the same.

The presence of a mechanical connection of the closure body via a carrier tape makes it possible, by selecting the dimensioning and the material properties of the band (rigidity) to set the structural properties of the closure part to a desired optimum, which results in the desired entangling forces. A particular, further advantage is that in the production as a precursor arbitrarily large tape lengths can be made with it closure bodies, so that desired tape lengths can be divided and fed, for example, a loading magazine, from which a base body, such as a horizontally extending support surface, is equipped.

Preferably, the arrangement is such that the respective closure body has a hooking head and / or a stalk adjacent to the hooking head, and that the carrier tape in such a system with the respective closure body in abutment that at least parts of the stem and / or Verhakungskopfes in planar connection with the surface areas of the carrier tape are. This thus forms a web with it laterally adjacent, lined up to a chain closure bodies, wherein Preferably both surface parts of the interlocking head and the stem are in planar connection with the carrier tape.

In a particularly advantageous manner, it can be provided here that the hooking head and / or handle are in area-related connection with the carrier tape over their entire axial extent, which is related to the longitudinal axis of the handle.

With regard to the connection of the hooking body to the base body, it may be provided that the carrier tape projects beyond the end of the stalks of the hooking body away from the hooking head in order to form an anchoring strip in the connecting area which can be fixed in an anchoring groove of a base body forming the supporting structure of the fastener part.

Alternatively it can be provided that the carrier tape ends in front of the end of the stem of Verhakungskopf the hooking body, so that the projecting end portions of the stems form anchoring mandrels, which can be fixed in record-forming recesses of the support structure of the closure member forming body.

The invention further comprises a closure having at least one closure part according to the invention and a main body connected to the connection region of the at least one carrier tape. In order to form a regular pattern of closure bodies on the closure part, mutually parallel anchoring grooves for successive groups of carrier tapes may in this case be provided in the base body at the same distance. Again, the recesses in the base body are preferably formed in spaced parallel rows.

The invention with reference to exemplary embodiments illustrated in the drawing is explained in detail.

Fig.1

eine gegenüber einer praktischen Ausführungsform stark vergrößert gezeichnete perspektivische Schrägansicht zweier gleich ausgebildeter Verschlusskörper, die in Kombination mit einem in Fig.1 nicht gezeigten Trägerband zu einem kombinierten Verschlusselement eines Ausführungsbeispiels des erfindungsgemäßen Verschlussteils vereinigbar sind;

Fig.2

eine näherungsweise im Maßstab von Fig.1 gezeichnete Seitenansicht des in Kombination mit einem Trägerband aus zwei Verschlusskörpern vereinigten Verschlusselementes;

Fig.3

eine gegenüber Fig.1 und 2 in etwas kleinerem Maßstab gezeichnete perspektivische Schrägansicht eines Teilausschnittes eines mit den in Fig.2 gezeigten Verschlusselementen gebildeten Ausführungsbeispieles des Verschlussteils;

Fig.4

eine demgegenüber im größeren Maßstab gezeichnete Seitenansicht eines Teilausschnittes eines in Verhakungseingriff gezeigten hermaphroditischen Verschlusses, wobei die jeweilige Tragstruktur der erfindungsgemäßen Verschlussteile weggelassen ist;

Fig.5

eine Draufsicht eines Flächenabschnittes des dem Beispiel von Fig.4 entsprechenden hermaphroditischen Verschlusses, wiederum ohne dargestellte Tragstrukturen der Verschlusselemente;

Fig.6

eine perspektivische Schrägansicht eines Teilabschnittes eines als Tragstruktur für das Ausführungsbeispiel von Fig.4 und 5 dienenden Grundkörpers;

Fig.7

eine der Fig.3 ähnliche, perspektivische Schrägansicht eines abgewandelten Ausführungsbeispiels;

Fig.8

eine der Fig.6 ähnliche, perspektivische Schrägansicht eines Teilabschnittes eines als Tragstruktur für das Ausführungsbeispiel von Fig.7 dienenden Grundkörpers und

Fig.9

eine perspektivische Schrägansicht zur Verdeutlichung der Anordnung einzelner Verschlusskörper an einem Längenabschnitt eines Trägerbandes für ein weiter abgewandeltes Ausführungsbeispiel des erfindungsgemäßen Verschlussteils.

Show it:

Fig.1

a greatly enlarged compared to a practical embodiment perspective oblique view of two identically formed closure body, in combination with a in Fig.1 Not shown carrier tape can be combined to form a combined closure element of an embodiment of the closure part according to the invention;

Fig.2

an approximate scale of Fig.1 drawn side view of combined in combination with a carrier tape of two closure body closure element;

Figure 3

one opposite Fig.1 and 2 drawn on a slightly smaller scale perspective oblique view of a partial section of a with the in Fig.2 shown closure elements formed embodiment of the closure member;

Figure 4

a side view, drawn on a larger scale, of a partial section of a hermaphroditic closure shown in an interlocking engagement, wherein the respective support structure of the closure parts according to the invention has been omitted;

Figure 5

a plan view of a surface portion of the example of Figure 4 corresponding hermaphroditic closure, again without illustrated supporting structures of the closure elements;

Figure 6

a perspective oblique view of a portion of a support structure for the embodiment of Figure 4 and 5 serving basic body;

Figure 7

one of the Figure 3 similar perspective oblique view of a modified embodiment;

Figure 8

one of the Figure 6 similar, perspective oblique view of a portion of a support structure for the embodiment of Figure 7 serving basic body and

Figure 9

a perspective oblique view to illustrate the arrangement of individual closure body on a longitudinal section of a carrier tape for a further modified embodiment of the closure part according to the invention.

Below, the invention is explained with reference to embodiments in which the closure parts form part of a hermaphroditic closure, wherein closure bodies, the in Fig.1 2 as a whole, at the upper end of their stems 4 each have a Verhakungskopf 6 in the form of a majority of a mushroom head, which is delimited by a circular arc-shaped outline 8 and a flat top surface 10 extending along the longitudinal axis of the stem 4 in a plane Stem surface 12 continues. The stem surface 12 surrounds on the stem 4 in each case one of a part of a circular cylinder corresponding lateral surface 14th

It is understood that instead of the shown mushroom head of Verhakungsköpfe 6 with circular arc-shaped outline 8 for the Verhakungsköpfe a Outline of the circular shape, for example, polygonal shape, could be provided or another deviating from the mushroom shape design. Likewise, could be provided for the stems 4 deviates from the circular shape design of the outline.

Fig.2 shows a composite closure element 18 formed by the combination of two closure bodies 2 with a carrier tape 16. Figure 3 shows the arrangement of four assembled closure elements 18 on a respective, continuous, flat carrier tape 16, wherein Figure 3 three rows of composite closure elements 18 are formed, which form a portion of a closure part. As it is in Fig.2 is shown, the respective closure body 2 lie both with its top surface 10 and with its stem surface 12 over its entire surface on one side and the other side of the carrier tape 16, aligned with each other. The lower end portion 22 of the carrier tape 16 extends beyond the lower end 20 of the stems 4, so that this end portion 22 forms an anchoring bar, by means of which the rows of closure elements 18 can be anchored to a supporting structure, based on the Figure 6 received below.

The closure part has, as in the Fig. 3 . 4 . 5 . 7 and 9 shown, one or more web-like carrier bands 16, each with a pair of oppositely arranged surface portions 17a, 17b. The oppositely arranged surface regions 17a, 17b are adjacent to a connection region 19, in this case the underside of the respective carrier strip 16. In other words, the surface regions 17a, 17b forming the side surfaces of the respective carrier tape 16 are arranged directly adjacent to the respective connection region 19. The connection region 19 may also extend over a lower portion of the respective carrier tape 16. Jump on the surface areas 1 7a, 17b individual closure body 2 from the respective carrier tape 16, wherein the hooking surfaces 24 provided on the closure elements 18 form a fixing possibility for further closure parts of the same or different type. The closure bodies 2 or closure elements 18 formed by interlocking heads 6 and / or stems 4 lie flat against the respective carrier band 16 on the surface regions 17a, 17b and are thus held in a stationary manner on the latter.

In the production of separate closure body 2, as shown in Fig.1 are shown by a suitable molding process made of a plastic material or metallic material and connected to the carrier tape 16, for example by gluing. Alternatively, lengths of the carrier tape 16 may be integrally formed by means of a known manufacturing process with composite closure elements 18 formed from two closure bodies 2 in each case, using techniques such as those described, for example, in US Pat EP 1 047 539 B1 or DE 10 2004 012 067 Al shown can be applied. Suitable materials are plastics, such as polypropylene or polyamide or materials from the group of acrylates, such as polymethacrylate, as well as polyethylene, polypropylene, polyoxymethylene, polyvinylidene fluoride, polymethylpenthen, Polyethylenchlorotrifluorethylen, polyvinyl chloride, polyethylene oxide, polyethylene terephthalate, Polybutylentheraphthalat, nylon 6, nylon 66 and polybutin in question. In the case of crosslinkable plastic materials, these can be post-crosslinked with UV light, for example, after the closure elements 18 have been produced. Particularly suitable are thermoplastic materials and those which are suitable for a thermosetting. It is also possible to use aramid, PPS (polypropylene sulfites) or aromatic polyether ketones, for example PEEK.

The Figure 4 and 5 illustrate the Verhakungseingriff between two hermaphroditic closure forming inventive closure parts, wherein the connection of the respective end portions 22 of the carrier tapes 16 is not shown. How very clear Figure 4 can be seen, the retaining force is formed by the interaction of the planar interlocking surfaces 24 on the hooking 6 in Verhakungszustand, which due to the planar contact high holding forces can be realized, while the joining of the closure parts to form the Verhakungseingriffs requires less effort, because the rounded outer surfaces of the Heads 6 are overrun.

In the Verhakungseingriff clarifying Figure 5 For the sake of clarity, the hooking surfaces 24 and the other structural elements are only partially numbered.

As already mentioned, is in 2 to 5 the support structure is not shown, on which the closure elements 18 are fixed by means of anchoring strips, which are formed by the end portions 22 of the carrier bands 16 which project beyond the lower ends 20 of the stems 4. Figure 6 shows a corresponding support structure in the form of a base body 26 in a plate-like form of a readily moldable by spraying plastic material. As receptacles for the anchoring bars formed by the end portions 22 of the carrier bands 16 26 anchoring grooves 28 are formed with rectangular channel cross-section in the main body. The determination of the end portions 22 in the anchoring grooves 28 can be done by gluing. Preferably, in the production, the procedure is such that the respective base bodies 26 are stocked from an assembly magazine in which prefabricated lengths of the carrier strips 16 are provided with closure elements 18 thereon, whereby high production speeds can be achieved.

The Figure 7 illustrates a modified embodiment, in which although the top surfaces 10 of the interlocking heads 6 in full contact on Carrier band 16, the free ends 20 of the stems 4 extend beyond the end edge of the carrier strips 6 addition. Adjacent to the ends 20 therefore form the stems 4 on the carrier tape 16 projecting anchoring mandrels, in the present embodiment circular mandrels, for their inclusion in the in Figure 8 shown base 26 recesses 30 are formed in the form of circular cylindrical blind holes. Again, the determination can be made by gluing, with a mechanical loading of the body 26 also allows high production rates.

It is understood that instead of a circular cylindrical shape circumscribing stems 4 out of round or polygonal stems could be provided, the shape of the recesses 30 would be adjusted accordingly.

In the preceding embodiments, closure elements 18 assembled on carrier tape 16 are formed in each case by arranging in each case a closure body 2 in alignment with both sides of carrier tape 16. Figure 9 shows a modified example in which the closure bodies 2 on one side of the carrier tape 16, no closure body 2 opposite to the opposite side of the carrier tape 16 in alignment. Rather, rows of individual closure bodies 2 are formed on each side, wherein the rows are offset from each other so that the closure body 2 of one row are each centrally located between two closure bodies 2 of the other row and so to speak, an alternating series arrangement of closure bodies 2 is formed, wherein instead of composite closure elements 18, each with two hooking heads 6, only one closure body 2 with a hooking head 6 forms effective hooking surfaces 24 on its underside. Again, to form hermaphroditic closures, a similar configuration may be provided on the associated closure member provided for the interlocking engagement. Corresponding embodiments are characterized by less, to induce Verhakungseingriffes required forces, but, depending on the design of Verhakungsköpfe 6, lower holding forces can be realized, so that such closures are formed so that an opening of the closure when needed without too much effort is possible.

Starting from the representation after the Figure 9 It is also clear that a single closure body 2 can only consist of a Verhakungskopf 6 with the proviso that the individual stems 4 omitted and the respective interlocking head 6 is then directly connected to the carrier tape 16, which then replaces the individual stems. In this way, even in a stepped arrangement, the interlocking heads 6 in different horizontal planes, based on the vertically oriented carrier tape 16, could be arranged thereon. As already stated, the entire closure part, consisting of the individual closure bodies 2, can be obtained with the carrier tape 16 by a shaping process. But it is also possible, the carrier tape 16 isolated from the other closure part first and this example, as shown in the Fig.1 into the gap between two adjacent closure bodies 2 and to connect the pertinent closure body halves with the flat carrier tape, for example, adhesive.

The closure systems described can be designed as a one-time closure system or, as stated, as so-called closure systems that can be opened and closed again and again. In any case, a longitudinal stiffening is brought about by the respective carrier band 16 between the closure bodies 2 in such a way that the closure elements with a corresponding construction are securely held in their locking position, so that in this respect the release forces are increased in this way. If required, further carrier tapes can intervene in rows in a manner not shown in detail between the carrier tapes shown, so that in this respect for the overall closure system a box-like structure arises. In that regard, a non-illustrated, square outer peripheral frame around the longitudinal rows of carrier bands 16 can be arranged.

Claims (11)

1. A closure part, in particular for forming hermaphroditic closures, comprising at least one web-shaped carrier strip (16) which has at least one pair of surface regions (17a, 17b) located opposite one another
   and which can be connected at least partially to a base body (26) as a third component along a connection region (19)
   and which has individual closure members (2) in at least one part of the surface regions (17a, 17b) which are located outside of the connection region (19) and adjacent thereto, said closure members (2) protruding from the carrier strip (16) and providing a possibility for securing (24) additional closure parts of the same or different type,
   characterised in that
   either
   two closure members (2) respectively, which lie flush against one another on one side and the other side of the carrier strip (16) extending between them, together form an assembled closure element (18),
   or
   a row of closure members (2) arranged spaced equally apart from one another is formed on one side and the other side of the carrier strip (16), and that the rows are offset from one another such that the closure members (2) of the one row are respectively located in the space between the closure members (2) of the other row.
2. The closure part according to Claim 1, characterised in that the respective closure member (2) has an interlocking head (6) and/or a stem (4) adjoining in particular the interlocking head (6) and that the carrier strip (16) rests against the respective closure member (2) in such a way that at least parts of the stem (4) and/or the interlocking head (6) are connected in a surface-to-surface manner to the surface regions (17a, 17b) of the carrier strip (16).
3. The closure part according to Claim 2, characterised in that both the surface parts (10 and 12) of the interlocking head (6) and the stem (4) are connected in a surface-to-surface manner to the carrier strip (16).
4. The closure part according to Claim 3, characterised in that the interlocking head (6) and/or the stem (4) is/are connected in a surface-to-surface manner to the carrier strip (16) over the entire axial extension relative to the longitudinal axis of the stem (4).
5. The closure part according to any of Claims 2 to 4, characterised in that the carrier strip (16) protrudes beyond the end of the stems (4) of the interlocking members (2) that is a distance away from the interlocking head (6) in order to form an anchoring strip (22) in the connection region (19) which can be fastened in an anchoring groove (28) of a base body (26) forming the carrying structure of the closure part.
6. The closure part according to any of Claims 2 to 4, characterised in that the carrier strip (16) ends in front of the end (20) of the stem (4) of the interlocking members (2) that is a distance away from the interlocking head (6) so that the protruding end regions of the stems (4) form anchoring mandrels that can be fastened in recesses (30) forming receptacles and are a part of a base body (26) forming the carrying structure of the closure part.
7. The closure part according to Claim 1, characterised in that two identical closure members (2) form an assembled closure element (18).
8. The closure part according to Claim 1 or 7, characterised in that rows of assembled closure elements (18), which are arranged spaced apart equally from one another, are formed on the carrier strip (16).
9. A closure comprising at least one closure part according to any of the preceding claims and a base body (26) connected to the connection region (19) of the at least one carrier strip (16).
10. The closure according to Claim 9, characterised in that the base body (26) is provided with parallel anchoring grooves (28) spaced apart equally from one another, for successive groups of carrier strips (16).
11. The closure according to Claim 10, characterised in that recesses (30) forming receptacles in the base body (26) are made in parallel rows that are spaced apart from one another.

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