| 主权项 |
1. A concealed hinge for coupling a door and a tubular support structure, the tubular support structure including a rear counterframe and a front frame mutually coupled to each other, the hinge comprising:
a lower fixed half-hinge; an upper movable half-hinge, the lower fixed half-hinge and the upper movable half-hinge being rotatably coupled each other for rotating about a first longitudinal axis between an open position and a closed position; wherein said lower fixed half-hinge includes a box-shaped hinge body to be concealedly anchored within the tubular support structure, said upper movable half-hinge including a pivot defining said first axis and a connecting plate to be anchored to the door, the connecting plate being reciprocally connected with said pivot to extend from the tubular support structure in said open position and to concealedly retract within the tubular support structure in said closed position; wherein said box-shaped hinge body includes a pivot seat for housing said pivot, the pivot including a cam member protruding therefrom, said box-shaped hinge body further including at least one working chamber including a follower member interacting with said cam member for sliding along a second longitudinal axis between a first and a second end-stroke position, the second longitudinal axis being perpendicular to said first axis, said follower member including at least one elastic counteracting element; wherein said pivot includes a cam seat, the cam member being removably insertable into said cam seat, said box-shaped hinge body including at least one passing-through opening to allow insertion or removal of said cam member in or from said cam seat when the pivot is mounted into the pivot seat. |
