Patent ID: 7775946

Claim:
A multifunctional trainer for strength training, the trainer comprising a body, a counterforce unit for generating a counterforce to resist exercise movements, a set of movement arms supported to the body, for performing different exercise movements, a set of elongated tensile elements arranged to act between the counterforce unit and the movement arms to apply the counterforce resisting each exercise movement from the counterforce unit to the movement arms, wherein the trainer comprises an automatic mechanical coupler, to which the tensile elements are connected, and wherein the coupler is adapted to, immediately at start of each exercise movement, automatically couple the tensile element corresponding to each separate movement arm for said exercise movement, to the counterforce unit in a force-applying manner, for applying the counterforce of the counterforce unit to said exercise movement, without the need for manual connection prior to performing said exercise movement, and without affecting, during said exercise movement, the tensile elements connected to the other movement arms, which are not subject to tension during said exercise movement, wherein the coupler comprises a substantially horizontal main axle, bearing-mounted rotationally on the body, a resistance pulley fixedly connected on the main axle to rotate with it, a resistance tensile element fixedly connected at one end to the resistance pulley, directed over the circumference of the resistance pulley, and connected, at the other end, to the counterforce unit, a set of training pulleys, the number of which substantially corresponds to the number of the movement arms, which training pulleys are freely rotationally bearing-mounted on the main axle at a distance from each other, a set of training tensile elements, the number of which substantially corresponds to the number of the training pulleys, each training tensile element being fixedly connected at one end to the training pulley, directed over the circumference of the training pulley, and connected, at the other end, to the movement arm, and a set of coupling elements for each training pulley for coupling said training pulley to the main axle to rotate the main axle and thus the resistance pulley, as said training pulley is being rotated, wherein each of the coupling elements comprises a crank, fixedly connected to the main axle, wherein the crank extends substantially perpendicularly outwards from the main axle adjacent to the training pulley on one side of it, and a protruding part, extending, at a distance from the main axle, from one side of the training pulley to the movement range of the crank, such that the protruding part grabs the crank as the training pulley starts rotating due to movement of the respective movement arm and the training tensile element connected thereto, for rotating the main axle and thus the resistance pulley such that the counterforce of the counterforce unit is applied to the movement arm.