| 摘要 |
A device for pivoting a structural member about the axle of a hinge, and hinge being fitted to the structural member and to an object so as to permit pivoting of the member relative to the object, the member having at least one edge portion which is magnetic and which swings along a planar path when the member pivots about the hinge axle relative to the object, the device including: an arm pivoted for rotation about an axis which is parallel to the hinge axle; at least one magnet carried by the arm, the arrangement being such that, upon pivoting of the arm, the magnet moves in a path parallel to the path of the magnetic edge portion of the member and spaced a small distance from the path of the magnetic edge portion to provide an air gap between the magnet edge portion and the magnet, whereby the magnet and the magnetic edge portion are out of contact with each other but can be magnetically coupled so as to move simultaneously in their respective paths upon pivoting of the member relative to the body; and a mechanical for swinging said arm about its pivot axis. |
