| 摘要 |
A leg assembly for a vehicle roof rack comprises a rigid leg adapted at its top end to be fastened to a cross-beam and terminating at its bottom end in a downwardly projecting inner edge flange adapted to enter a vehicle roof gutter to sit upon the floor thereof, a clamping element itself comprising a body having a lower inner face adapted, in use, to bear against the outer surface of the gutter wall and having a lower edge flange then projecting under the gutter and an upwardly extending upper edge flange having an upper part adapted to bear against an outwardly inclined camming surface on the outside of the leg, and self-aligning draw bolts to draw the clamping element upwardly towards the leg; the line of action of the draw bolts extending through the clamping element intermediate of said edge flanges thereby enabling the clamping element to be loaded inwardly against the outer wall of the gutter as well as being loaded upwardly against the floor of the gutter. When the parts are assembled and the draw bolts are tightened, the clamping element is drawn upwardly towards the leg so as to bear against the gutter. Towards the end of the tightening action the contact between the clamping element and the camming surface moves the upper part of the clamping element outwardly to bring the lower inner face into firm engagement with the wall of the gutter.
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