Swing frame has seat, cables or bars , pairs of legs, link, bottom curved runners and springs or shock absorbers.

摘要

The top transverse bar (1) of the swing-frame has two cables or bars fixed to a swing seat (3). The pairs of legs (4,5) are fixed to the top transverse bar by means of a link (6) or flexible material. the bottom ends of the pairs of legs has downward curved runners (8), together with shock absorbers or sprung elements.