Treadmill with lateral shift effect

Abstract

A treadmill with lateral shift effect includes a main frame, two swinging levers, with a pin joint set at the top and a swinging end formed at the bottom. The pin joint is pivoted onto the stands of the main frame. A movable rack is transversely set overhead the pedestal of the main frame and both ends of the movable rack are separately connected with the swinging end of two swinging levers. A treading mechanism is set on the movable rack and has a base frame, an upper swinging set, a lower swinging set and two pedals. The bottom of the base frame is assembled fixedly onto the movable rack, the upper/lower swinging sets are pivoted centrally on top of the base frame, and the bottom of two pedals is provided with an assembly seat for assembly and connection of two ends of upper/lower swinging sets.

1 . A treadmill with lateral shift effect, comprising:
 a main frame, including a pedestal and two stands arranged at interval on both sides of the pedestal;   two swinging levers, with a pin joint set at the top and a swinging end formed at the bottom, the pin joint is pivoted onto the stands of the main frame;   a movable rack transversely set overhead the pedestal of the main frame, and both ends of the movable rack are separately connected with the swinging end of two swinging levers;   a treading mechanism, set on the movable rack; the treading mechanism includes a base frame, an upper swinging set, a lower swinging set and two pedals; the bottom of the base frame is assembled fixedly onto the movable rack, the upper/lower swinging sets are pivoted centrally on top of the base frame, and the bottom of two pedals is provided with an assembly seat for assembly and connection of two ends of upper/lower swinging sets;   a crank linkage frame, including a fixed end and a movable end, the fixed end is pivoted onto a permanent position of the main frame, and the movable end is linked to either end of the upper or lower swinging sets of the treading mechanism;   when two pedals of the treading mechanism are tilted under the treading action, the movable rack will generate reciprocating transverse movement through the circular motion of the crank linkage frame.   
     
     
         2 . The structure defined in  claim 1 , wherein a handrail is further extended from the top of two swinging levers. 
     
     
         3 . The structure defined in  claim 1 , wherein a roller assembly is set between the movable rack and the pedestal of the main frame, the roller assembly is set onto either the bottom of the movable rack or onto the pedestal, the movable rack can shift horizontally with the support of the roller assembly in the event of transverse displacement, moreover, both ends of the movable rack are connected with the swinging end of the swinging lever via the swinging tab or via the expansion link, in tune with the changing height of the swinging end of the swinging lever. 
     
     
         4 . The structure defined in  claim 1 , wherein said main frame is fitted with a damping device connected via a driving member with the crank linkage frame, so as to provide a resistance to the rotating crank linkage frame. 
     
     
         5 . The structure defined in  claim 1 , wherein said upper swinging set is of a single-lever or double-lever structure; moreover, if a double-lever swinging set is adopted, the axis of the pin joint can be set into a non-axial axis, or a coaxial axis. 
     
     
         6 . The structure defined in  claim 1 , wherein said lower swinging set is of a single-lever or double-lever structure; moreover, if a double-lever swinging set is adopted, the axis of the pin joint can be set into a non-axial axis, or a coaxial axis. 
     
     
         7 . The structure defined in  claim 1 , wherein the movable end of said crank linkage frame is configured into either a cylinder or a round bar, enabling the ends of upper or lower swinging sets and their joints to be set into round bar or cylinder for sleeving. 
     
     
         8 . The structure defined in  claim 1 , wherein the ends of the upper and lower swinging sets permit the joint with the assembly seat of the pedal to be connected with the movable end of the crank linkage frame. 
     
     
         9 . The structure defined in  claim 8 , wherein an extension arm is protruded from the joint between the ends of upper/lower swinging sets and the assembly seat of the pedal, and then a pin joint is set at the end of the extension arm for connection with the movable end of the crank linkage frame. 
     
     
         10 . A treadmill with lateral shift effect, comprising:
 a main frame including a pedestal;   a movable rack transversely set overhead the pedestal of the main frame in a transverse displacement state;   a treading mechanism set on the movable rack, the treading mechanism comprising a base frame, an upper swinging set, a lower swinging set and two pedals; the bottom of the base frame is assembled fixedly onto the movable rack, the upper/lower swinging sets are pivoted centrally on top of the base frame, and the bottom of two pedals is provided with an assembly seat for assembly and connection of two ends of upper/lower swinging sets;   a crank linkage frame comprising a fixed end and a movable end; the fixed end is pivoted onto a permanent position of the main frame, and the movable end is linked to either end of the upper or lower swinging sets of the treading mechanism;   when two pedals of the treading mechanism are tilted under the treading action, the movable rack will generate reciprocating transverse movement through the circular motion of the crank linkage frame.   
     
     
         11 . The structure defined in  claim 10 , wherein a roller assembly is set between the movable rack and the pedestal of the main frame, said roller assembly is set onto either the bottom of the movable rack or onto the pedestal, the movable rack can shift horizontally with the support of the roller assembly in the event of transverse displacement. 
     
     
         12 . The structure defined in  claim 10 , wherein the main frame is fitted with a damping device; the damping device is connected via a driving member with the crank linkage frame, so as to provide a resistance to the rotating crank linkage frame. 
     
     
         13 . The structure defined in  claim 10 , wherein said upper swinging set is of a single-lever or double-lever structure; moreover, if a double-lever swinging set is adopted, the axis of the pin joint can be set into a non-axial axis, or a coaxial axis. 
     
     
         14 . The structure defined in  claim 10 , wherein said lower swinging set is of a single-lever or double-lever structure; moreover, if a double-lever swinging set is adopted, the axis of the pin joint can be set into a non-axial axis, or a coaxial axis. 
     
     
         15 . The structure defined in  claim 10 , wherein the movable end of said crank linkage frame is designed into either a cylinder or a round bar, enabling the ends of upper or lower swinging sets and their joints to be set into round bar or cylinder for sleeving. 
     
     
         16 . The structure defined in  claim 10 , wherein the ends of the upper and lower swinging sets permit the joint with the assembly seat of the pedal to be connected with the movable end of the crank linkage frame. 
     
     
         17 . The structure defined in  claim 16 , wherein an extension arm is protruded from the joint between the ends of upper/lower swinging sets and the assembly seat of the pedal, and then a pin joint is set at the end of the extension arm for connection with the movable end of the crank linkage frame.