| 主权项 |
1. A hub clamp assembly comprising:
a hub, the hub comprising a flange portion, and an annular sleeve portion, the flange portion and annular sleeve portion together defining a common passageway through the hub, the sleeve portion having a plurality of substantially longitudinal slits therein extending from a distal end toward the flange portion to form a plurality of sleeve segments, the sleeve portion further having an outer surface comprising concentric, unthreaded grooves; and an annular collar, the annular collar comprising: a plurality of sleeve engagement pieces together substantially surrounding the sleeve portion, each sleeve engagement piece having a first surface and an opposing second surface, the first surface containing concentric, unthreaded grooves slidably engaged with the concentric, unthreaded grooves of the outer surface of the sleeve portion, and a support ring surrounding the sleeve portion of the hub and overlying the second surfaces of the sleeve engagement pieces; wherein each sleeve engagement piece includes a lip intermediate the flange portion and the support ring and wherein the hub and annular collar are configured to cooperatively clamp a shaft within the common passageway through the hub, wherein the hub is provided with a plurality of threaded members in the flange portion for engaging the lip of the sleeve engagement piece, the lip in turn contacting a facing surface of the support ring to apply an axial force thereto, the threaded members urging the collar axially away from the flange portion to an operative position along the length of the sleeve portion such that the grooves of the sleeve engagement pieces slide against the grooves of the sleeve portion, thereby forcing the sleeve engagement pieces radially inward to exert a clamping force. |
