| 摘要 |
A vibration resistant fastening device includes a fastener comprising a shank and a drivable head, the shank having a first handed thread closer to the head and an opposite handed thread further from the head. A nut is threadably engaged upon the first handed thread and annular washers carrying first and second interengageable cam-faces are disposed around the shank. In use the opposite handed threaded portion of the shank is threadably engaged in a receiving member and the washer cam-faces are clamped together between the nut and the receiving member. The first annular washer is fixed to the nut and the second annular washer is fixed to the receiving member via an intermediate member, and the cam-faces cooperate to increase the tensile stress in the shank when the nut is turned in the loosening direction under the influence of vibration. |
