| 摘要 |
A hinge that provides an inexpensive way for achieving a large and controllable pop-up for a case (e g, those used for laptop computers, automotive center consoles, bpefcases, and the like) and that does not lead to distortion of the case or failure from the gradual relief of stresses stored in the matepals of the case or the hinge The hinge employs a spnng comppsed of a beam The design allows different spnng forces for the different phases of motion A first phase, the pop-up phase, is accomplished by the leaf spnng formed from the hinge matepal itself A second phase, in which continued upward force of a reduced magnitude is sufficient dunng the further opening of the lid, may be provided by an optional helper spnng which can be one of the many types that have traditionally been used with hinges |
