The invention relates to a trampoline with a base, which includes a frame, and with a jumping sheet, which preferably includes hook elements on its underside, the jumping sheet being connected to the frame by means of a plurality of annular strap sections, which each extend at least partially around the frame and are secured to the hook elements. The invention is also directed to a hook element for trampolines.
Trampolines are widely used in physiotherapy and in the leisure area.
In the case of so-called mini-trampolines, a distinction is made between trampolines with a spring suspension and a rubber strap ring suspension. In the case of a spring suspension, the jumping sheet is secured to the frame by means of spiral springs. Such a suspension makes considerable acceleration forces available and is thus suitable, in particular, for sports training with high demands on the cardiovascular system.
In the case of a rubber strap ring suspension, one or more elastic straps or strap sections are used, which connect the jumping sheet to the frame. The larger elasticity of such a fastening produces “softer” deceleration of the body and is thus primarily suitable in the case of joint and back problems, in rehabilitation, for relaxation and combating stress and for children.
Only a single elastic strap was originally provided in strap suspensions, see for example DE 299 19912 U1. The strap is wound alternately about the frame of the trampoline and pulled through loops arranged on the underside of the jumping sheet. It has, however, transpired in practice that the known trampoline has disadvantages in operation. Thus the fastening of the jumping sheet to the frame is perceived to be complex. Furthermore, tilting of the jumping sheet with respect to the frame can occur in use. In particular, however, the entire strap must be replaced if only one point on the strap is abraded or worn.
There has therefore been a move to suspending the jumping sheet on a plurality of annular strap sections, which are preferably fastened to the underside of the jumping sheet and are looped around the frame. Such a trampoline is disclosed in, for instance, DE 102 26707 B4 emanating from the applicant. By contrast with the suspension of the jumping sheet with only a single strap, the individual strap suspension combines a number of advantages. Above all, the durability is significantly increased. Furthermore, replaceability is also better (and cheaper). If a strap section is worn, it is simply replaced individually. The other strap sections remain untouched. Finally, the individual strap suspension always ensures correct centering of the jumping sheet.
The individual strap suspension has basically proved to be satisfactory. There is, however, the endeavour to improve the known trampoline. This applies, in particular, with regard to the wear resistance of the suspension.