INTERIOR DOOR (VARIANTS) Russian patent published in 2022 - IPC E06B3/984 E06B3/70 

FIELD: building.

SUBSTANCE: interior door relates to the field of building, namely to a design of interior doors with a door leaf including additional removable elements, and can be used in buildings for covering openings. The interior door includes a door leaf made of the minimum permissible width according to GOST 6629-88, containing at least one longitudinal groove on at least one end surface along the length, wherein at least three holes are made, located equidistantly from each other, intended for installing a fastener, e.g., a dowel, and an expansion profile of a width divisible by 5 and equal to the step of change in the wall openings according to GOST 475-2016, also containing at least one longitudinal groove on one end surface along the length, wherein at least three holes are made, located equidistantly from each other and coaxially with the holes in the groove of the door leaf, intended for installing a fastener, e.g., a dowel, and on the opposite end surface along the length, at each edge, the expansion profile has at least one hole with a plug for installing a fastener, e.g., a screw, a self-tapping screw. In a particular implementation, a decorative element is installed in the groove of the expansion profile by means of a "tongue-and-groove" connection, provided with at least one longitudinal pin on one end surface along the length, and at least three holes, located equidistantly from each other and coaxially with the holes in the groove of the door leaf, on the reverse end surface along the length.

EFFECT: creation of a door leaf with an expansion profile providing a possibility of changing the width of the door leaf depending on the width of the wall opening, with a low labour intensity of installation.

4 cl, 8 dwg