The invention relates to a fastening system for a sports and recreation device, specifically a fastening system for so-called slacklines.
Slacklines have developed into a trend in recent years. In this sport, which is also performed as a recreational activity, a person balances on a tubular band or belt webbing in a manner similar to tightrope walking. This band is tensioned between two fastening points so as to be more or less taut. This trend sport has also become popular because the athlete is greatly challenged by the interplay of balance, coordination, and concentration. For this reason, it is particularly popular among athletes who need to have a good sense of equilibrium for their particular sport. These include sports such as climbing, horseback riding and vaulting, skiing, and snowboarding, as well as martial arts.
The slackline can be set up virtually anywhere, although the rope, is usually stretched between trees or poles. Particularly popular locations are a person's own yard or any park. After the slackline has been used, it can be quickly taken down and packed up. Trees prevent the fastening elements from supping, even if the rope has been only slightly tensioned, since there is sufficient friction between the fastening material and the bark of the tree. Specifically, a first round sling is placed around a first tree and is then connected to the slackline by means of a shackle or a similar object. A device for shortening the slackline to a sufficient extent is typically provided between the slackline and a second round sling on a second tree for the purpose of tensioning the slackline to a certain pretension, which is specified by the user. This device is often a block and tackle, which includes a first rope, which is fastened to the slackline by means of a shackle, and includes another rope, which is connected to the second round sling, likewise by means of a shackle, or is the second round sling itself. With shackles in particular, a difficulty arises in that the bolt or socket pin used to close the shackle often drops out of the shackle when the slackline is set up or taken down and, therefore, must be replaced relatively often. If parts are missing and have not been replaced, however, the slackline cannot always be set up at the desired time.
As a remedy for this deficiency in the prior art, a set for the installation of a slackline is known from the disclosure EP 2 065 077 B1, according to which a slackline is formed from two round slings and one rope. The slackline also comprises a tensioning element. An eye is provided at least at one end of the rope. This eye is engaged in a first round sling, which has a functional element, by means of which the round sling can be shortened to a required size, and which has a hook, which is intended to be engaged in the eye. A second functional element is connected to the slackline and is connected to the aforementioned round sling by means of a tensioning belt. The second functional element replaces a block and tackle. The round sling is shortened to the required dimensions by means of the functional element in order to optimally adjust the round song at the fixing points. Even if shackles are ultimately dispensed with in this manner, one must consider the disadvantage that the guidance of the rope in the functional elements is extremely complicated, which makes it very difficult to adjust the round slings at the fixing points and to replace a functional element. Users who do not have great dexterity could be overwhelmed by the attachment process. In addition, if a first round sling is engaged incorrectly or if a functional element is not optimally engaged in the first eye, rather than the slackline being hung with the desired orientation, it may be slightly twisted. This interferes with the functionality of the slackline and with the user's enjoyment.
Another disadvantage of known fastening systems for slacklines, in addition to the large number of individual parts that can get lost, is that the use of shackles always results in a very great overall weight for the fastening system. For many users, the great weight is the reason why they tend to use the device in one place. This goes against the fundamental concept.
Therefore, the object of the invention is to provide a fastening system for a sports and recreation device, which comprises a limited number of parts without detachable elements, in order to avoid loss, and which makes it possible to attach the slackline securely and without twisting.
The object is achieved by a system comprising a first round sling, a first band clamp, a slackline, a second band clamp, a block and tackle, and a second round sling. The first band clamp is designed in such a way that the band clamp comprises round-sling bolts for accommodating the first round sling and a slackline bolt for accommodating the slackline, wherein the axes through the round-sling bolts are disposed at a substantially right angle to the axis through the slackline bolt. For assembly, the first round sling is placed around a first fixing point and is fastened to the first band clamp by means of the round-sling bolts. The slackline is fastened on the slackline bolt and is routed around a deflecting roller in the interior of the band clamp and in the direction of a second fixing point. The second end of the slackline is also placed around a deflecting roller in the interior of the second band clamp and is then fastened to a slackline bolt. The second band clamp, at the end thereof facing away from the slackline, is accommodated in the block and tackle.
The block and tackle comprises a first and a second block and tackle element. A block and tackle rope, which has been tied in a knot at one block and tackle element, is tensioned between these block and tackle elements, back and forth over rollers, and therefore the effect of the block and tackle can be deployed by pulling on the loose end. A brake disposed at one of the block and tackle elements prevents the block and tackle from inadvertently coming loose, which would result in the loosening of the slackline and, in the worst case during use, in the athlete falling. Since the brake is disposed at one of the block and tackle elements, the brake, which, according to the prior art, was always additionally incorporated into the fastening system, is fixedly connected to the corresponding block and tackle element, and therefore a further assembly can be dispensed with. The design is therefore simplified. In addition, a round-sling bolt is provided at the first block and tackle element, with the aid of which a second round sling, which has been placed around the second fixing point, can be fastened to the block and tackle. The block and tackle is used to tension the slackline to the extent desired by the athlete.
All the bolts have two bolt heads. Moreover, the band clamps and the block and tackle each comprise at least two planar elements, which are fixedly connected to one another. One of the outer planar elements comprises elongated holes, wherein the bolt heads are designed so as to be incapable of falling through the elongated holes. Functional holes are located at corresponding points of the opposing, outer planar element. The functional holes are designed in such a way that they have a cut-out through which a bolt head fits and, adjoining the cut-out, a recess through which the bolt heads do not fit. These recesses and the elongated holes in the corresponding planar elements have the same orientation. The functional holes are designed in such a way that the bolts move into the adjoining recess when a tensile load is applied to the band clamps or the block and tackle. As soon as tension is released from the particular object, the bolts can be moved into the region of the cut-out. Since the bolt heads can be pushed through the cut-out, the device components secured by the bolt can be removed.
In addition, a multiplier can be provided, which is engaged on the block and tackle rope. This allows the tensile force applied to the block and tackle rope by the user to be further increased.
The technique for attaching the round slings is changed in order to dispense with the shackle, by means of which the block and tackle is connected to the round slings according to the prior art. For the purpose of attachment, the ends of the round slings are crossed one over the other and are then fastened to the first block and tackle element by means of the round-sling bolt. In a design of the first block and tackle element having three planar elements disposed in parallel, the round-sling end on the right on the slackline axis is engaged on the left in the first block and tackle element, and the round-sling end on the left on the slackline axis is engaged on the right. Lateral forces from the round sling that act on the first block and tackle element now act against one another on the middle planar element of the first block and tackle element, and therefore the attachment meets the highest safety requirements.
The invention is described in greater detail with reference to drawings. In the drawings;
The section through the fastening system 1 according to the invention depicted in
Corresponding to
The sectional view in
Since the aforementioned band clamps and block and tackle elements described in detail are exemplary embodiments, they can be modified by a person skilled in the art in the usual manner within a broad scope without departing from the scope of the invention. In particular, the specific embodiments of the band clamps can also have a form other than that described here. The block and tackle can also be designed in another form, if this is necessary in order to reduce the amount of force required or for design-related reasons. In addition, the use of the indefinite article “a” does not exclude the possibility of more than one of the relevant features being present.
Number | Date | Country | Kind |
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10 2015 107 075 | May 2015 | DE | national |
Number | Name | Date | Kind |
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4125257 | Lew | Nov 1978 | A |
5538223 | Scace | Jul 1996 | A |
8986178 | Klopman | Mar 2015 | B2 |
9115783 | Riedrich | Aug 2015 | B2 |
Number | Date | Country |
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2065077 | Jun 2009 | EP |
Number | Date | Country | |
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20160325130 A1 | Nov 2016 | US |