公开(公告)号：US4824303A

公开(公告)日：1989-04-25

申请号：US100464

申请日：1987-09-24

申请人： William A. Dinger

发明人： William A. Dinger

IPC分类号： F16B2/14 ,  F16B39/24 ,  F16B43/00 ,  H05K7/14

CPC分类号： H05K7/1404 ,  F16B2/14 ,  F16B39/24 ,  F16B43/002 ,  Y10T403/557 ,  Y10T403/7024 ,  Y10T403/7069

摘要： A locking wedge apparatus for fastening a printed circuit board within an elongated slot in a rack. The apparatus includes an elongated center wedge having sloped surfaces at its opposite ends and two end wedges abutting against the center wedge's opposite sloped surfaces. A screw interconnects the two end wedges, threadedly engaging a threaded bore in the remote end wedge. A friction nut is positioned on a portion of the screw's remote end that projects beyond the remote end wedge, and the apparatus is configured to include a pair of low-friction, abutting surfaces between the nut and the remote end wedge. This ensures that when the screw is fully loosened, the frictional torque applied to the nut by the end wedge is exceeded by the frictional torque applied to the nut by the screw. Further unthreading of the screw is thereby effectively inhibited.

摘要翻译： 一种用于将印刷电路板紧固在机架中的细长槽中的锁定楔形装置。 该装置包括一个细长的中心楔，它在其相对端具有倾斜的表面，两个端楔抵靠着中心楔的相对的倾斜表面。 螺钉将两端楔形物互相连接，螺纹接合远端楔形件中的螺纹孔。 摩擦螺母位于螺钉的远端上突出超过远端楔块的部分上，并且该装置构造成在螺母和远端楔之间包括一对低摩擦的邻接表面。 这确保了当螺钉完全松动时，通过螺钉施加到螺母的摩擦力矩超过了通过端部楔块施加到螺母的摩擦力矩。 从而有效地抑制了螺钉的进一步的脱螺纹。