Support and on -off mechanism of door

The utility model provides a support and on -off mechanism of door, including door (1), door frame (2), upper flap (3), gatepost (4), lower flap (5), pivot (6), spring plate (7), spring (8), spring layer board (9), swivel mount (10), support (11) and nut (12), swivel mount (10) are fixed on door frame (2), for semi - cylindrical, there is an arc groove radial opening, support (11) are fixed on gatepost (4), for the cylinder, the in -process is opened to door (1), the pressure of spring (8) is overcome in swivel mount (10), the arc groove of being detained move swivel mount (10) by the semicircular cylinder axial of swivel mount (10) on the circumference surface of support (11) radially blocks on support (11) circumference surface, the utility model discloses the effect that has support and fixed gate to guarantee that the door is in the state of opening or closing all the time.