| 摘要 |
A washer has a body having at least one inner segment arranged to cooperate with a fastener which has a rod with one end connectable toward one side of an object to be tightened or loosened and another end to extend to another side of the object and having at least one thread portion for engagement by a nut, the body being arranged to enhance a cooperation between the at least one inner segment and the another end of the rod underneath the at least one thread portion to create a friction between the at least one inner segment and the another end of the rod, the body having an axis and being provided with a first outer surface located at one axial side and adapted to cooperate with the nut threadingly connected with the rod on the another end, with a second outer surface located at an opposite axial side and adapted to cooperate with the object, and with at least one inner surface adapted to cooperate with the at least one inner segment, so that when a tool is applied and the nut is turned by the tool to overcome a thread friction with the rod, and the rod wants to turn along while a holding force holds the body stationary, the at least one inner segment stops the rod from turning so that any further turning of the nut elongates or relaxes the rod in an axial direction to tighten or loosen the rod by elongating or relaxing the rod. Also, a method and a power tool for tightening and loosening with the use of the washer is proposed. |
