| 摘要 |
A driven hinge (20) has fixed and movable hinge sections (21, 28) that are arranged to be selectively rotated relative to one another about an axis (x1-x1) between first and second relative angular positions. The hinge includes: a body (21) mounted on one of the hinge sections; a shaft (22) mounted on the body and adapted to be selectively rotated in either angular direction; a first driven member (23) mounted for rotation about the axis; a differential coupling (24) acting between the shaft and first driven member for transmitting and converting torque from said shaft to torque and axial thrust components on said first driven member; a selector mechanism (25) acting between said body and first driven member for exerting a force on the first driven member to (a) oppose and cancel the axial thrust component when the hinge sections are between the first and second relative angular positions, and (b) to not oppose the axial thrust component when the hinge sections are in either of the first and second positions, such that the first driven member may move from a first axial position when the hinge sections are between the first and second relative angular positions, to a second axial position when the hinge sections are in either of the first and second relative angular positions; and a locking mechanism (27) operated by axial displacement of the driven member and acting between the body and movable hinge section for preventing the hinge sections from being moved relatively when the hinge sections are in either of the first and second positions.
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