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.

Abstract: A treadboard and a treadmill includes two first elastic strips of same structure arranged abreast with the lengths disposed along the moving direction of the belt of the treadmill and a plurality of solid support strips; the first elastic strips are arc structural, the center of the arc structure is higher than two ends of the arc structure; either end of each first elastic strip is once formed with buffer portion that is flexible along the length direction, so that the buffer portions buffer the arc structure of the first elastic strip after fixedly connected to the base of the treadmill; the solid support strips is of straight strip structure respectively connected vertically between the two first elastic strips, two ends of each solid support strip are respectively connected to the corresponding upper sides of the two first elastic strips.

Abstract: A treadboard and a treadmill includes two first elastic strips of same structure arranged abreast with the lengths disposed along the moving direction of the belt of the treadmill and a plurality of solid support strips; the first elastic strips are arc structural, the center of the arc structure is higher than two ends of the arc structure; either end of each first elastic strip is once formed with buffer portion that is flexible along the length direction, so that the buffer portions buffer the arc structure of the first elastic strip after fixedly connected to the base of the treadmill; the solid support strips is of straight strip structure respectively connected vertically between the two first elastic strips, two ends of each solid support strip are respectively connected to the corresponding upper sides of the two first elastic strips.

Abstract: A treadboard and a treadmill includes two first elastic strips of same structure arranged abreast with the lengths disposed along the moving direction of the belt of the treadmill and a plurality of solid support strips; the first elastic strips are arc structural, the center of the arc structure is higher than two ends of the arc structure; either end of each first elastic strip is once formed with buffer portion that is flexible along the length direction, so that the buffer portions buffer the arc structure of the first elastic strip after fixedly connected to the base of the treadmill; the solid support strips is of straight strip structure respectively connected vertically between the two first elastic strips, two ends of each solid support strip are respectively connected to the corresponding upper sides of the two first elastic strips.

Abstract: A treadboard and a treadmill includes two first elastic strips of same structure arranged abreast with the lengths disposed along the moving direction of the belt of the treadmill and a plurality of solid support strips; the first elastic strips are arc structural, the center of the arc structure is higher than two ends of the arc structure; either end of each first elastic strip is once formed with buffer portion that is flexible along the length direction, so that the buffer portions buffer the arc structure of the first elastic strip after fixedly connected to the base of the treadmill; the solid support strips is of straight strip structure respectively connected vertically between the two first elastic strips, two ends of each solid support strip are respectively connected to the corresponding upper sides of the two first elastic strips.