| 摘要 |
The concealed hinge has a frame element (12) fixable on the frame and at least one wing element (14) fixable on a casement. The rotational point of the wing element is movable inside the frame element through bolt (18) and opening (20). The hinge lever (16) is guided through a bearing axis whose centre axis forms the rotational point which is supported by slide members and is movable along guide tracks. The travel path for the rotational point is proportional to the opening angle of the wing element and is preferably restricted. |
