Two-way opening and closing device for door

The utility model discloses a two-way opening and closing device for doors, which is composed of a hinge axle base and a slot hole base; the hinge axle base and the slot hole base are respectively and symmetrically arranged at both side of a door leaf or a main body for installing the door leaf; the hinge axle base is provided with a chamfered edge column as a hinge axle; the slot hole base is provided with an R-shaped slot hole; the width of a narrow groove opening at the middle part of the R-shaped slot hole is equal to the flat thickness of the hinge axle; the diameter of the segmental slot hole of the R-shaped slot hole is equal to the diameter of the hinge axle; the central distance of the R-shaped slot hole is not equal to the central distance of two hinge axles. The two-way open-and-close door device has the advantages of simple structure, reasonable structure, low cost, reliable use, convenience and long service life.