| 摘要 |
A pinned hinge comprising with first and second hinged members respectively including first and second leaves. The leaves have knuckles that define first bores that extend through the knuckles in a longitudinal direction. A pin is received within the bores of both leaves, pivotably joining the leaves. A cover, defining a longitudinal channel, surrounds the knuckles, protecting them. The leaves are operatively connected to the cover such that pivotal movement of the leaves displaces the cover with respect to the pin. Shanks connecting the knuckles to leaf bodies preferably have at least a double bend to retard interference between the cover and the leaves during pivoting. In one embodiment, the knuckles have gear sectors meshed with racks in the cover. In another embodiment, leaf springs operatively connect the cover to the leaves. Further embodiments include a seal disposed for sealing the cover to the hinged members when the hinge is closed. End caps block the ends of the cover. Preferably, one of these caps has a lubricant port for feeding lubricant into the channel. A cross guide, such as a cross pin, may be provided to guide the cover with respect to the pin. Some embodiments have a biasing member that pivotally biases the leaves in response to a relative position of the cover with respect to the pin. |
