Multi-track exercise fitness apparatus

Abstract

The present disclosure relates to a multi-track exercise fitness apparatus, including a main frame, and a hypocycloid movement mechanism. The hypocycloid movement mechanism includes an internal gear, an external gear and a force applying member; the internal gear is fixedly connected to the main frame, the external gear internally is engaged with the internal gear, the force applying member is rotatably connected with the external gear, and the force applying member applies force to drive the external gear to roll in the internal gear, such that a movement track of the force applying member forms a hypocycloid. The multi-track exercise fitness apparatus can realize the combination of multiple exercise postures, so that the user can have a more comprehensive exercise effect and a more interesting exercise during fitness.

What is claimed is: 
     
         1 . A multi-track exercise fitness apparatus, wherein comprising:
 a main frame and a hypocycloid movement mechanism; the hypocycloid movement mechanism comprising an internal gear, an external gear and a force applying member; the internal gear being fixedly connected to the main frame, the external gear internally being engaged with the internal gear and rolling in the internal gear, the force applying member being rotatably connected with the external gear, and the force applying member applying force to drive the external gear to roll in the internal gear, such that a movement track of the force applying member forms a hypocycloid.   
     
     
         2 . The multi-track exercise fitness apparatus according to  claim 1 , wherein further comprising a restraint transmission mechanism, the restraint transmission mechanism being in transmission connection with the external gear, and the restraint transmission mechanism constraining the external gear rollably on an inner edge of the internal gear, and receiving a transmission of the external gear, to form a rotation movement around a center of the internal gear. 
     
     
         3 . The multi-track exercise fitness apparatus according to  claim 2 , wherein the restraint transmission mechanism is a crank; the crank is rotatably connected to the main frame, the crank has a rotation axis collinear with an axis of the internal gear, and the external gear is rotatably connected to the crank. 
     
     
         4 . The multi-track exercise fitness apparatus according to  claim 2 , wherein the restraint transmission mechanism comprises at least a central gear, the central gear is rotatably connected to the main frame, and the central gear has an axis collinear with an axis of the internal gear; the central gear is engaged with the external gear, or the central gear is connected to the external gear through a gear train. 
     
     
         5 . The multi-track exercise fitness apparatus according to  claim 1 , wherein the movement track is configured as: every time the external gear rolls a circle in the internal gear, a track formed by the force applying member is an ellipse-like similar to an ellipse but does not enclose a standard ellipse. 
     
     
         6 . The multi-track exercise fitness apparatus according to  claim 5 , wherein a number of teeth of the internal gear is 105, and a number of teeth of the external gear is 48 or 50. 
     
     
         7 . The multi-track exercise fitness apparatus according to  claim 6 , wherein the force applying member is connected in an annular interval of a quarter radius to a three-quarter radius of a reference circle of the external gear. 
     
     
         8 . The multi-track exercise fitness apparatus according to  claim 1 , wherein a distance between a connection position of the force applying member and a center of the external gear is adjustable. 
     
     
         9 . The multi-track exercise fitness apparatus according to  claim 5 , wherein a distance between a connection position of the force applying member and a center of the external gear is adjustable. 
     
     
         10 . The multi-track exercise fitness apparatus according to  claim 8 , wherein: the external gear is provided with a plurality of detachable mounting holes with different distances from the center of the external gear, and the force applying member is rotatably connected in any one of the detachable mounting holes in a removable way. 
     
     
         11 . The multi-track exercise fitness apparatus according to  claim 2 , wherein: the main frame is provided with a set of the hypocycloid movement mechanism on each of both sides, the restraint transmission mechanisms in two sets of the hypocycloid movement mechanism are connected. 
     
     
         12 . The multi-track exercise fitness apparatus according to  claim 2 , further comprising a damping adjust mechanism, and the restraint transmission mechanism is drivingly connected to the damping adjust mechanism. 
     
     
         13 . The multi-track exercise fitness apparatus according to  claim 1 , wherein the main frame is further provided with a seat cushion and/or an armrest, and the force applying member is a pedal or a footboard.