HINGE FOR SWING SELF-CLOSING DOOR OF COMMERCIAL EQUIPMENT Russian patent published in 2022 - IPC E06B7/12 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to the construction of a hinge of a swing self-closing door containing a lower hinge half with through holes for attachment to the equipment body with a vertical cylindrical protrusion with a flat top, made with a vertical axis and bevels at an angle to this axis on both sides in the form of a helical surface, an upper hinge half with a U-shaped longitudinal groove inside, through coaxial holes in the side walls of the groove and blind holes in the lower surface, an insert equipped with a vertical cylindrical protrusion with a flat top, made with a through hole and bevels at an angle to this hole on both sides in the form of a screw surface, a locking protrusion located on the reverse side of the insert, and fixed on the surface of the base of the upper hinge half with fasteners with the possibility of removing it in such a way that when assembling the hinge, the central axes of the vertical axis of the lower hinge half, the through hole of the insert and the blind operational opening of the upper hinge half, as well as the axes of the locking blind hole and the locking protrusion coincide. What is original in the proposed design is that the lifting angles of the screw surfaces of the bevels of the cylindrical protrusions of the lower hinge half and the insert are made of large friction angles for the materials from which the lower hinge half and the insert are made, one of the side walls of the U-shaped groove of the upper hinge half is removable.

EFFECT: purpose of the invention is to expand the functionality of the hinge and increase its reliability.

1 cl, 8 dwg