Concealed hinge mechanism

摘要

A concealed hinge mechanism for connecting a door and a door frame has two fixed plates mounted on the door and the door frame, and two L-shaped connecting elements to connect the fixed plates while providing a rotational and outward movement for opening.

主权项

1. A concealed hinge mechanism for connecting a door and a door frame, having a door angle between them, the concealed hinge mechanism comprising:
two fixed plates, each of the fixed plates comprising:
an upper edge having an upper track;a lower edge having a lower track opposed to the upper track;a first knuckle connected to each of the fixed plates;a pair of apertures through the fixed plate between the upper and lower edges; andfasteners for fitting through the apertures for fastening one of the fixed plates to the door and the other fixed plate to the door frame; and a pair of connecting elements, each of the connecting elements comprising:
a longer first plate and a shorter second plate connected at an apex at an angle;a first end of the first plate having laterally extending pins for engaging the upper track and the lower track of one of the fixed plates;a second end of the second plate having a second knuckle;a first pin for hingably connecting the first knuckle and the second knuckle; anda pivotal connecting hinge connecting the apexes of the pair of connecting elements.