Frame-type leg lift machine operated safely and having steady swinging action

A leg lift machine comprising:

• a main frame unit, two drive levers, two pedals, two handlebars, two transverse driven levers, two first driven levers, two rear swinging members, a swinging mechanism, and a magnetically controlled resistance mechanism;
• wherein:
• the main frame unit includes a bottom frame, two side brackets, two front uprights, and two rear uprights;
• each of the two front uprights is connected with the bottom frame and a front end of one of the two side brackets;
• each of the two rear uprights is connected with the bottom frame and a rear end of one of the two side brackets;
• each of the two drive levers has an upper end provided with a pivot portion extending outward;
• the upper end of each of the two drive levers is pivotally mounted on one of the two rear uprights;
• the upper end of each of the two drive levers is served as a rotation fulcrum, and the two drive levers are pivoted relative to the main frame unit, reciprocally swingable forward and backward, and moveable along a curved trajectory;
• each of the two pedals is pivotally mounted on a lower end of one of the two drive levers;
• each of the two handlebars has a lower end pivotally mounted on the bottom frame;
• each of the two transverse driven levers has a first end pivotally connected with a mediate section of one of the two handlebars and a second end pivotally connected with the pivot portion of one of the two drive levers;
• each of the two first driven levers has an upper end pivotally connected with the pivot portion of one of the two drive levers;
• each of the two rear swinging members is pivotally mounted on one of the two rear uprights;
• each of the two rear swinging members has a first end pivotally connected with a lower end of one of the two first driven levers;
• the swinging mechanism includes a transverse swinging seat, two linking members, two bottom levers, two front swinging members, and a rotation mandrel;
• the transverse swinging seat is swingably and pivotally mounted on a rear section of the bottom frame;
• each of the two linking members has a first end pivotally connected with one of two ends of the transverse swinging seat and a second end pivotally connected with one of the two rear swinging members;
• each of the two bottom levers has a rear end pivotally connected with a second end of one of the two rear swinging members;
• each of the two front swinging members has a first end pivotally connected with a front end of one of the two bottom levers and a second end mounted on the rotation mandrel;
• the magnetically controlled resistance mechanism is mounted on a front section of the bottom frame and linked to the swinging mechanism to provide a resistance to the swinging mechanism;
• and
• the magnetically controlled resistance mechanism at least includes a magnetically controlled wheel that is rotatable, a pivot wheel mounted on a shaft of the magnetically controlled wheel, and a transmission belt mounted around the pivot wheel and the rotation mandrel.