Rowing machine

Abstract

A rowing machine has a base, a seat, a rotating plate, two oar components, a damping mechanism and a transmission mechanism; the base with a rack and a slope rail; the seat cushion slidably coupled to the rail; the rotating plate with a fixing rotating shaft rotatably assembled to the rack through the rotating shaft; two oar components respectively connected to the two ends of the rotating shaft by unilateral bearings in universal joining way to unilaterally drive the rotating plate to rotate when swinging; the rotation damping mechanism is assembled to the rack; the transmission mechanism assembled between the rotating plate and the damping mechanism to drive a damping wheel of the damping mechanism when the rotating plate rotates.

1 . A rowing machine, wherein comprising:
 a base with a rack and a slope rail;   a seat cushion slidably coupled to the rail;   a rotating plate with a fixing rotating shaft rotatably assembled to the rack through the rotating shaft;   two oar components respectively connected to the two ends of the rotating shaft by unilateral bearings in universal joining way to unilaterally drive the rotating plate to rotate when swinging;   a rotation damping mechanism with strength adjustable and assembled to the rack;   and   an acceleration type transition transmission mechanism assembled between the rotating plate and the damping mechanism to drive a damping wheel of the damping mechanism when the rotating plate rotates.   
     
     
         2 . The rowing machine according to  claim 1 , wherein the acceleration type transition transmission mechanism is a belt pulley component, which comprises a rotating belt pulley and a belt; the rotating belt pulley comprises a large and a small belt pulleys coaxially connected, the rotating belt pulley is assembled to the rack, the small belt pulley is linked to the rotating plate by a first belt, the large belt pulley is linked to the damping wheel by a second belt. 
     
     
         3 . The rowing machine according to  claim 2 , wherein the acceleration type transition transmission mechanism further comprises two tensioning pulleys assembled to the rack respectively to couple to the first and the second belts. 
     
     
         4 . The rowing machine according to  claim 1 , wherein the acceleration type transition transmission mechanism is a gear component with at least one stage. 
     
     
         5 . The rowing machine according to  claim 1 , wherein the acceleration type transition transmission mechanism is a chain component comprising a rotating chain plate and a chain; the rotating chain plate comprises a large and a small chain plates coaxially connected, the rotating chain plate is assembled to the rack, the small chain plate is linked to the rotating plate by a first chain, the large chain plate is linked to the damping wheel by a second chain. 
     
     
         6 . The rowing machine according to  claim 1 , wherein the oar component comprises a shaft sleeve, a bearing and an oar; the shaft sleeve is connected to the end portion of the rotating shaft by the bearing, so that the shaft sleeve is rotatable with respect to the rotating shaft, the shaft sleeve is disposed with two lugs, one end of the oar is inserted between the two lugs and pivoted to the two lugs, so that the oar is capable of axially swinging with respect to the shaft sleeve; the oar is universally jointed to the end portion of the rotating shaft by the shaft sleeve. 
     
     
         7 . The rowing machine according to  claim 1 , wherein the damping mechanism further comprises a magnetic board component, the damping wheel is a magnetic control wheel, the magnetic board component is assembled to the rack and is coupled to the magnetic control wheel, the magnetic board component is connected to a spinner or an electronic control component by a pull wire. 
     
     
         8 . The rowing machine according to  claim 1 , wherein the damping mechanism further comprises an electromagnetic component, the damping wheel is a magnetic control wheel, the electromagnetic component is assembled to the rack and is coupled to the magnetic control wheel, the electromagnetic component is connected to an electronic control instrument by a wire. 
     
     
         9 . The rowing machine according to  claim 1 , wherein the damping mechanism is a windage damping mechanism, the damping wheel is a fan blade. 
     
     
         10 . The rowing machine according to  claim 1 , wherein the damping mechanism is a water resistance damping mechanism, the damping wheel is a water wheel. 
     
     
         11 . The rowing machine according to  claim 1 , wherein the seat cushion comprises a cushion plate, a sliding groove disposed at the bottom portion of the cushion plate and a seat back, the seat back is pivoted to the rear end of the cushion plate by a torsion spring. 
     
     
         12 . The rowing machine according to  claim 11 , wherein a connecting element is disposed between the cushion plate and the sliding groove, the seat back comprises a seat back bar and a plurality of cross bars, the bottom end of the seat back bar is pivoted to the rear end of the connecting element by the torsion spring, the cross bars are respectively fixedly connected to the two sides of the seat back bar; each cross bar is sleeved with a cylindrical roller.