Flywheel mounting assembly for an exercise bicycle

Abstract

A flywheel mounting assembly for an exercise bicycle has a flywheel, a housing, at least one bearing, a holder and a hub. The housing defines a mounting space and an inner surface. The at least one bearing is mounted in the mounting space of the housing. The holder is tubular, has a mounting hole, an end rotatably mounted in the at least one bearing and an end extending through and being mounted securely with the flywheel. The hub is mounted securely in the mounting hole of the holder and has an axle extending through a center of the hub. Accordingly, weight and rotation of the flywheel is supported by the housing and stress is equally sustained by the housing, bearing, holder and hub. Therefore, deformation or distortion may be effectively prevented for smooth and stable flywheel rotation.

1 . A flywheel mounting assembly for an exercise bicycle comprising
 a flywheel being diamagnetic;   a housing having
 an axle hole; and 
 an annular wall defining a mounting space and an inner surface; 
   at least one bearing being mounted in the mounting space of the housing and tightly abutting the inner surface of the annular wall of the housing;   a holder being tubular, being mounted securely to the flywheel and having
 a mounting hole; 
 an inner surface; 
 an outer surface; and 
 a mounting end being mounted rotatable in the at least one bearing in the mounting space of the housing; and 
   a hub being mounted securely in the mounting hole of the holder and having
 a shell having two sides; and 
 an axle extending through the shell and protruding respectively from the sides of the shell and extending through the axle hole of the housing. 
   
   
   
       2 . The flywheel mounting assembly for an exercise bicycle as claimed in  claim 1 , wherein
 the flywheel further has
 a drive side; 
 a non-drive side; 
 a central hole; 
 a countersink formed around the central hole in the non-drive side; and 
 multiple securing holes formed in the countersink and surrounding the central hole; and 
   the holder further has
 an outer collar being radially formed on and protruding from the outer surface of the holder and being mounted in the countersink of the flywheel and having multiple bore holes being formed around the outer collar and corresponding to the securing holes of the flywheel; and 
 an extending end extending through the central hole of the flywheel; and 
   multiple fasteners are mounted through the bore holes of the outer collar and secured in the securing holes of the flywheel to mount the holder securely on the flywheel.   
   
   
       3 . The flywheel mounting assembly for an exercise bicycle as claimed in  claim 2 , wherein
 the holder further has an inner collar being radially formed on and protruding from the inner surface of the holder and having multiple through holes formed around the inner collar;   the shell of the hub further has two flanges being radially formed on and protruding from the sides of the shell, corresponding to and being mounted in the mounting hole of the holder, one of the flanges corresponding to the non-drive side of the flywheel, having multiple screw holes formed around the flange and corresponding respectively to the through holes of the inner collar of the holder; and   multiple fasteners are mounted through the through holes of the inner collar and secured in the screw holes of the flange to mount the shell securely in the mounting hole of the holder.   
   
   
       4 . The flywheel mounting assembly for an exercise bicycle as claimed in  claim 3 , wherein the housing further has multiple threaded holes formed around the axle hole. 
   
   
       5 . The flywheel mounting assembly for an exercise bicycle as claimed in  claim 4 , wherein the flywheel is metal. 
   
   
       6 . The flywheel mounting assembly for an exercise bicycle as claimed in  claim 5 , wherein the hub further has a gear being mounted around the axle on the drive side of the flywheel, adjacent to one side of the shell.