Water resistance assembly for rowing machine

Abstract

This application discloses a water resistance assembly for a rowing machine, including a water tank, a pivot assembly, a paddle rod, at least two paddle blades, and a paddle blade adjustment mechanism. The pivot assembly passes through a first housing and a second housing of the water tank. The paddle rod has a length direction perpendicular to the length direction of the pivot assembly. The pivot assembly passes through the paddle rod, and at least two rod portions are arranged around the pivot assembly. Each rod portion has an end away from the pivot assembly, and paddle blades are disposed at the ends of the rod portions. The pivot assembly, through the paddle rod, is adapted to drive at least two paddle blades to move around the pivot assembly. The paddle blade adjustment mechanism connects to the paddle blades. A portion of the paddle blade adjustment mechanism is located inside the water tank, and another portion is located outside the water tank. The paddle blade adjustment mechanism is adapted to move the relative positions of the paddle blades on the corresponding rod portions along the length direction of the rod.

Claims

1. A water resistance assembly for a rowing machine, comprising: A water tank having a first housing and a second housing sealed to each other; a pivot assembly passing through the first housing and the second housing, the pivot assembly having a pivot length direction; a paddle rod having at least two rod portions having a rod length direction perpendicular to the pivot length direction, the pivot assembly passing through the paddle rod, the at least two rod portions being arranged around the pivot assembly, each rod portion having an end portion away from the pivot assembly; at least two paddle blades disposed at the end portion of the rod portion, the pivot assembly being adapted via the paddle rod to drive the at least two paddle blades to move around the pivot assembly; and a paddle blade adjustment mechanism connected to the paddle blades, a portion of the paddle blade adjustment mechanism being located inside the water tank, another portion of the paddle blade adjustment mechanism being located outside the water tank, the paddle blade adjustment mechanism being adapted to move the relative position of the paddle blades on the corresponding rod portion along the pivot length direction.

2. The water resistance assembly for a rowing machine as claimed in claim 1, wherein, The propeller adjustment mechanism has at least two sliding members, at least two pivoting rods, and a sleeve. The sliding member has an outer end and an inner end opposite to the outer end. The pivoting rod has a first end and a second end opposite to the first end. The sliding member is disposed in the corresponding rod portion. The outer end of the sliding member is connected to the corresponding propeller. The inner end of the sliding member is pivotally connected to the first end of the corresponding pivoting rod. The second end of the pivoting rod is pivotally connected to the sleeve. The rotating shaft assembly passes through the sleeve. The sleeve is adapted to move along the length direction of the rotating shaft to drive the propeller to move relative to the propeller rod. Alternatively, the end of the rod portion has a clamping groove, and the propeller is inserted into the corresponding clamping groove and adapted to move in the clamping groove.

3. The water resistance assembly for a rowing machine as claimed in claim 2, wherein, The blade adjustment mechanism also includes a ring block, a protruding post, and an eccentric guide. The sleeve passes through the ring block, and the ring block is adapted to rotate relative to the sleeve. The protruding post is fixedly disposed on an outer circumferential surface of the ring block. The eccentric guide has a shaft and an arc-shaped guide hole. The arc-shaped guide hole surrounds the shaft, and the protruding post is located inside the arc-shaped guide hole. The arc-shaped guide hole has a beginning end and an end end. From the beginning end to the end end, the distance between the center line of the arc-shaped guide hole and the shaft gradually decreases.

4. The water resistance assembly for a rowing machine as described in claim 3, wherein, The blade adjustment mechanism also has a bearing ring, the ring block has an inner surface that defines a receiving cavity, the sleeve has a flange that passes through the bearing ring, the bearing ring is placed in the receiving cavity and abuts against the flange.

5. The water resistance assembly for a rowing machine as claimed in claim 2, wherein, The blade adjustment mechanism also includes a ring block, a transmission component, and a rack. The sleeve passes through the ring block, and the ring block is adapted to rotate relative to the sleeve. The rack is fixedly disposed on an outer circumferential surface of the ring block, and the transmission component meshes with the rack.

6. The water resistance assembly for a rowing machine as claimed in claim 2, wherein, The blade adjustment mechanism also has at least two guide members, each guide member having a column and a guide groove, the column passing through the guide groove, one of the column and the guide groove being disposed in the corresponding sliding member, and the other of the column and the guide groove being disposed in the corresponding rod portion.

7. A water resistance assembly for a rowing machine, comprising: A water tank having a first housing and a second housing sealed to each other; a rotating shaft assembly passing through the first housing and the second housing, the rotating shaft assembly having a rotating shaft length direction; a paddle rod having at least two rod portions, an outer support ring and at least two abutment paddles, the rod portions having a rod length direction perpendicular to the rotating shaft length direction, the at least two rod portions being arranged around the rotating shaft assembly, the rod portions having an end portion away from the rotating shaft assembly, the outer support ring surrounding and connecting the at least two ends, and the abutment paddles standing upright at the end portion parallel to the rotating shaft length direction; At least two blades are disposed at the end of the rod. The shaft assembly is adapted to drive the at least two blades to move around the shaft assembly in a first rotation direction via the blade member. The abutment member is disposed on the side of the blade facing away from the first rotation direction. A blade adjustment mechanism is connected to the blade. A portion of the blade adjustment mechanism is located inside the water tank, and another portion of the blade adjustment mechanism is located outside the water tank. The blade adjustment mechanism is adapted to move the relative position of the blade on the corresponding rod in the length direction of the rod.

8. The water resistance assembly for a rowing machine as claimed in claim 7, wherein, The shaft assembly includes an adjusting shaft, a resetting shaft, a resetting transmission plate, and a guide member. The adjusting shaft has an upper end, a lower end, and a connecting portion located between the upper end and the lower end. The upper end of the adjusting shaft passes through the first housing. An external thread is provided around the outer wall of the connecting portion of the adjusting shaft. The end of the resetting shaft away from the propeller rod passes through the second housing. The adjusting shaft and the resetting shaft are coaxially arranged along the length direction of the shaft.

9. The water resistance assembly for a rowing machine as claimed in claim 8, wherein, The reset transmission plate is sleeved on an outer wall of the reset shaft near one end of the paddle rod. The guide has a fixing part and at least one limiting part. The limiting part is located on the side of the fixing part away from the reset transmission plate, and the limiting part is inserted into the fixing part. The limiting part is arranged along the length direction of the shaft. The lower end of the adjusting shaft passes through the fixing part, and the end of the limiting part away from the fixing part abuts against an inner wall of the water tank.

10. The water resistance assembly for a rowing machine as claimed in claim 8, wherein, The propeller rod also has an inner ring plate that surrounds and connects the at least two rod portions, and the inner ring plate is disposed close to the shaft assembly. The outer support ring is located at the circumference defined by the at least two rod portions and is separate from the inner ring plate.

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