The present invention relates to relates to a hinge so that it is not exposed to the outside, the hinges are exposed to the outside is installed on the door or the various slats to be not good in appearance so that it can not be seen the play is generated in the engagement portion from the outside and rotate 180 degrees the order to develop;
Between consists of the plate and the center of the four first fixing hole penetrating the first fixing hole is formed on both sides are perpendicularly bent in the same direction parallel to a pair of first and the wing portion, a first wing portion of the two sides extending the first opening and the first first moving the hinge in which the first guide groove that is perpendicular bisector and elongated in a direction that is bent from the wing portion open end, and wherein the both ends of the first guide groove on both sides of the insert formed in the axis, and the first bracket and the first hinge holes through the horizontal lower edge of the first wing portion, composed of the first fixed hinge axis that both ends inserted into the first hinge holes of both sides;
Consists of a plate-shaped and the center of the through-four second fixing hole, wherein between the two fixing holes are formed on both sides are perpendicularly bent in the same direction parallel to the pair of second wing portion, a second wing portion of the two sides extending the second opening and the second the second mobile hinge in which the second guide groove, and wherein the both ends of the second guide groove on both sides of which extend longitudinally and vertically bisecting a direction in which the bending in the wing parts of the open end is inserted formed in the axis, and a second bracket that is configured and the second as the second fixed hinge axis which the second hinge is a horizontal through-hole in the upper corners of the wings, the tube ends inserted in the second hinge hole of the two sides;
When the first to the first and second edges gaegubuyi located in spaced apart condition while facing the same direction in which the first hinge hole and the second hinge hole of the second bracket to be adjacent to each other; Is formed in a plate-shaped end has a first chukhol and second chukhol, an intermediate that is inserted into the first movable hinge axis of the other end of the first and the second the other direction, the fixing hole is formed to be inserted into the second fixing hinge shaft as the number of first rotating member having a through hole extending first main hinge protrusion;
Is formed in a plate-shaped one end is a third chukhol and second and fourth chukhol to be inserted into the second mobile hinge axes, the middle of the other side end of the first and the second the other direction, the fixing hole is formed to be inserted into the first fixed hinge axis as the number of second rotating member having a through hole extending second main hinge protrusion;
The first and the second when the rotational member so as to overlap each other to shift the main hinge to be inserted into the first and second main hinge shaft and the hole;
Is mounted between the first or second rotatable member is formed adjacent to the disk-shaped hole is formed at the center wear where the first or second movable hinge axis a through-proof bushing and;
The hinge that is not exposed to the outside of the first or the second rotational member and the first and second wing portions and are inserted into the spaced portion of claim 1 or claim characterized in consisting of a bushing for holding interval during which the through second mobile hinge axes It relates.