Treadmill

Abstract

A treadmill that comprises a frame, a belt section arranged on the frame and comprising a belt arranged in an endless loop around two rolls at a distance from each other, first means for turning the belt around a front roll and a back roll at a desired speed, and second means for adjusting the tilt of the belt section with respect to the horizontal. The second means comprise a rotary actuator arranged in the frame and having a support arm arranged to rest against the frame, and lifting arms, the angle of which is arranged to change with respect to the frame when the rotary actuator is working.

1 . A treadmill that comprises a frame, a belt section arranged on the frame and comprising a belt arranged in an endless loop around two rolls at a distance from each other, first means for turning the belt around a front roll and a back roll at a desired speed, and second means for adjusting the tilt of the belt section with respect to the horizontal, the second means comprising a rotary actuator arranged in the frame and having a support arm arranged to rest against the frame, and lifting arms, the angle of which is arranged to change with respect to the frame when the rotary actuator is working.  
     
     
         2 . The treadmill as claimed in  claim 1 , wherein the support arm of the rotary actuator is arranged to flexibly support itself against the frame.  
     
     
         3 . The treadmill as claimed in  claim 1  or  2 , wherein the rotary actuator is fastened to a profile section, the ends of which are fitted with bearings/pivoted to the frame, and that the lifting arms are arranged to the area of the ends of the profile section.  
     
     
         4 . The treadmill as claimed in  claim 3 , wherein the motor and gears of the rotary actuator are arranged inside the profile section.  
     
     
         5 . The treadmill as claimed in any one of  claims 1  to  4 , wherein the rotary actuator is arranged to the front part of the treadmill.  
     
     
         6 . The treadmill as claimed in any one of  claims 1  to  4 , wherein the rotary actuator is arranged to the back part of the treadmill.  
     
     
         7 . The treadmill as claimed in  claim 5  or  6 , wherein the rotary actuator is arranged between the frontmost and backmost roll.  
     
     
         8 . The treadmill as claimed in any one of  claims 1  to  7 , wherein the lifting arms are arranged to rest against the floor.  
     
     
         9 . The treadmill as claimed in any one of  claims 1  to  7 , wherein the lifting arms are arranged to rest against a separate subframe.  
     
     
         10 . The treadmill as claimed in  claim 9 , wherein the ends of the lifting arms are pivoted to the subframe.  
     
     
         11 . The treadmill as claimed in  claim 10 , wherein the ends of the lifting arms are pivoted to the subframe, to points above the frame.  
     
     
         12 . A treadmill that comprises a frame, a belt section arranged on the frame and comprising a belt arranged in an endless loop around two rolls at a distance from each other, first means for turning the belt around a front roll and a back roll at a desired speed, and second means for adjusting the tilt of the belt section with respect to the horizontal, wherein the second means comprise a rotary actuator arranged in a separate subframe and having a support arm arranged to rest against the subframe, and lifting arms, the angle of which is arranged to change with respect to the subframe when the rotary actuator is working.  
     
     
         13 . The treadmill as claimed in  claim 12 , wherein the lifting arms are arranged to rest against the frame.  
     
     
         14 . The treadmill as claimed in  claim 13 , wherein the ends of the lifting arms are pivoted to the frame.  
     
     
         15 . The treadmill as claimed in any one of  claims 12  to  14 , wherein the rotary actuator is fastened to a profile section, the ends of which are fitted with bearings/pivoted to the frame, and that the lifting arms are arranged in the area of the ends of the profile section.  
     
     
         16 . The treadmill as claimed in  claim 15 , wherein the motor and gears of the rotary actuator are arranged inside the profile section.  
     
     
         17 . A treadmill that comprises a frame, a belt section arranged on the frame and comprising a belt arranged in an endless loop around two rolls at a distance from each other, first means for turning the belt around a front roll and a back roll at a desired speed, and second means for adjusting the tilt of the belt section with respect to the horizontal, the second means comprising a rotary actuator arranged in a subframe and having a support arm arranged to rest against the frame, and lifting arms arranged to the subframe, the angle of which is arranged to change with respect to the frame when the rotary actuator is working.  
     
     
         18 . The treadmill as claimed in  claim 17 , wherein the first means intended for rotating the belt are also fastened to the subframe.  
     
     
         19 . The treadmill as claimed in  claim 18 , wherein the joint between the subframe and frame is a joint turning around an articulated shaft and allows a positional shift between the subframe and frame, and that the first means and the rotary actuator are fastened coaxially to the subframe so that the articulated shaft is linear with the common axis of the first means and the rotary actuator.  
     
     
         20 . The treadmill as claimed in any one of  claims 17  to  19 , wherein the lifting arms are arranged to rest against the floor.