METHOD OF MAKING HIDDEN HINGE FOR DOORS AND HIDDEN HINGE FOR DOORS MADE BY THIS METHOD Russian patent published in 2024 - IPC E05D3/06 

FIELD: door hinges.

SUBSTANCE: invention relates to a door hinge for concealed placement between a door leaf and a door frame with two installation parts. A hidden hinge for doors comprises first and second fastening elements, which are configured to cut one of them into the door leaf, and the other into the corresponding jamb, and are connected to each other using a connecting device that comprises lever elements rotating around the axes on which they secured; fastening element installed in the door leaf; fastening element installed in the jamb; the said fastening elements are connected to each other through three levers, two of which are frame levers of the same shape, between which the third is placed (the blade lever), and some ends of the frame levers are hinged to the supporting axis of the frame levers, and the other ends of the frame levers are hinged to the movable supporting axis, whereas the blade arm is hinged at one end to the movable support axis of the blade lever, and at the other end to the supporting axis of the blade lever. All three levers in their middle part are hinged to each other by a connecting axis, which is not connected to any fastening element. A method for making a hidden loop is also described.

EFFECT: ability to open a door with such a hinge by 180° with external decorative panels and a shutter without loss of appearance and abrasion of the seal, as well as the ability to make a minimal cutout in the frame of the door block.

12 cl, 19 dwg