Patent ID: 6854569

Claim:
A brakable wheel hub device adapted to be rotatably mounted on an axle about an axis so as to secure a brake disk which surrounds the axle and which has a plurality of through holes offset from the axis, said device comprising: a wheel hub shell having an inner surrounding shell surface which is adapted to spacedly surround the axle, and which includes right and left inner surface segments opposite to each other along the axis, said right inner surface segment having an internally threaded section which extends in an axial direction, and a disk securing portion which extends from said right inner surface segment radially and outwardly, and which has an outer surrounding wall surface that surrounds the axis, said disk securing portion having an abutting surface which is adapted to contact and be disposed leftwardly of the brake disk in the axial direction, and a plurality of insert holes which extend leftwardly and in the axial direction from said abutting surface; a positioning ring adapted to surround the axle and to be disposed outboard to the brake disk, said positioning ring including left and right surrounding surfaces opposite to each other in the axial direction, and proximate to and distal from said abutting surface, respectively, a passage which extends from said right surrounding surface through said left surrounding surface, and a plurality of protrusions which extend leftwardly and in the axial direction from said left surrounding surface and which are respectively adapted to pass through the through holes in the brake disk so as to be fitted into said insert hole in the axial direction, thereby placing the brake disk in a spline engagement with said wheel hub shell; and a surrounding locking member including an insert segment which has an outer insert surface that surrounds the axis, that is extendable through said passage and the brake disk, and that is formed with an externally threaded section to threadedly engage said internally threaded section, and an abutting segment which extends radially from said outer insert surface of said insert segment and which abuts against said right surrounding surface when said externally threaded section threadedly engage said internally threaded section, thereby forcing said left surrounding surface to displace towards the brake disk and said abutting surface.