Patent ID: 8870721

Claim:
A functional group for a gymnastic machine provided with a frame supporting a load group usable for executing a gymnastic exercise using a first cable; said machine comprising an actuating group provided with at least one user interface carried movably by said frame and with an actuating second cable mechanically connected with said load group by means of said first cable; said functional group comprising a modular transmission member arranged between said user interface and said load group to exchange power between said first and second cables so as to facilitate packaging, assembling and disassembling said frame; wherein said transmission member comprises a torsion shaft extending along a given direction and comprising a central portion axially delimited by two lateral portions, each of which supports a drum coupled to said frame in a freely rotatable and axially fixed manner through a mechanical connecting device to wind said first and/or second cable; wherein each of said lateral portions includes an end portion of a given shape and each of said connecting devices includes a removable head provided with a coupling member shaped in a conjugated manner with said end portion to shape-couple and allow the exchange of a torque through said central portion.