Patent ID: 7025552
Filing Date: 2006-04-11
Classification: F16B,Y10T

Abstract:
1. An assembly for automatically compensating variations of a spacing between first and second structural members due to manufacturing and/or mounting tolerances, comprising: a mounting bolt having external threads, a base element provided at said first structural member and having a threaded bore provided with adjustment threads and mounting threads of different diameters, and an adjustment sleeve of metal and having a thru-bore and external threads, said adjustment threads of said base element and said external threads of said adjustment sleeve forming a pair of threads of a predetermined spiral direction to allow for adjustment of said adjustment sleeve for compensation purposes, and said mounting threads of said base element and said external threads of said mounting bolt forming a pair of treads of a spiral direction opposite to said first mentioned spiral direction to allow for fixing said assembly, and said adjustment sleeve having a drive portion for providing frictional drag between said adjustment sleeve and said mounting bolt so that rotation of the mounting bolt when inserted into the adjustment sleeve causes rotation of the adjustment sleeve, so that when the adjustment sleeve after compensation of variations has engaged said second structural member and said mounting bolt is rotated further, frictional drag between said mounting bolt and said adjustment sleeve is overcome in order to enable the mounting bolt to be clampingly fixed to said base element, said drive portion of said adjustment sleeve comprising an internal annular plastic portion, which internal annular plastic portion is disposed in an annular groove of the adjustment sleeve and projects from the wall of the thru-bore of the adjustment sleeve radially inwards sufficiently so as to provide said frictional drag between said drive portion and said external threads of said mounting bolts, wherein said adjustment sleeve has an external annular plastic portion projecting beyond said external threads of said adjustment sleeve radially outwards sufficiently so as to allow for frictional or positive engagement between said external annular plastic portion and said base element when said adjustment sleeve is threaded into the base element for securing purposes, and wherein said intern and external annular plastic portions are interconnected by plastic webs extending through radial bores of said adjustment sleeve.