Patent ID: 6907972
Filing Date: 2005-06-21
Classification: B60B

Abstract:
1. A free-wheel hub assembly comprising: a tubular spoke-mounting hub having bowl-shaped left and right ends respectively defining left and right recesses therein; an axle co-axially extending through said spoke-mounting hub, and having a right axle portion disposed outwardly of said right end of said spoke-mounting hub; left and right inner bearings sleeved on said axle for rotatably mounting of said spoke-mounting hub thereon in such a manner that said left and right recesses are disposed outwardly of said left and right inner bearings, respectively; a tubular sleeve disposed in said right recess and sleeved on said axle; a self-lubricating bearing sleeved on said tubular sleeve and having an outer surface and an inner surface opposite to said outer surface and in sliding contact with said tubular sleeve; a sprocket mounting member having an annular coupling end extending into said right recess and sleeved on and in sliding contact with said outer surface of said self-lubricating bearing, and a sprocket-mounting end opposite to said coupling end and disposed outwardly of said right recess around said right axle portion; a ratchet unit disposed in said right recess around said coupling end, and coupled to said coupling end of said sprocket mounting member and said right end of said spoke-mounting hub so as to permit co-rotation of said sprocket mounting member and said spoke-mounting hub; and at least one outer bearing sleeved on said right axle portion of said axle and in sliding contact with said sprocket mounting end of said sprocket mounting member.