Spring loaded pop-up friction hinge assembly

摘要

A hinge assembly for rotatably coupling a first member to a second member. A cylindrical pintle is secured to the second member. A friction element secured to the first member includes first and second cylindrical walls that wrap at least substantially circumferentially around the pintle in opposing first and second directions, respectively, providing equal resistance to relative rotation therebetween in both directions. A protuberance extends radially from the pintle, into a corresponding slot in at least one of the cylindrical walls, and engages an end of the slot when the first member and second member achieve a first predefined angular relationship, the friction element storing energy from relative movement between the friction element and pintle when the protuberance is engaged at the slot end.