Hinge apparatus having automatic return function for use in building materials

Abstract

A hinge apparatus having an automatic return function for building materials is provided, in which a return spring is removed to thereby offer a closing force of each door with only a torsion spring. The hinge apparatus includes an upper body; a lower body; a shaft whose lower end portion is rotatably installed in the lower body; a piston whose outer circumference is slidably installed along the inner surface of the lower body, a rotational / linear motion converter which converts a rotational motion of the shaft into an axial linear motion of the piston according to rotation of the door; a damping unit which provides a damping function selectively where the piston ascends according to return of the door; a torsion spring which rotates the shaft in the direction returning the door at the closing time; and a clutch unit for stopping an increment of an elastic force due to reverse twisting of the spring where an opening angle reaches a clutch stop start angle, or for restoring the elastic force of the spring.

Description

technical field [0001] The invention relates to a hinge device with automatic return function for building materials. More specifically, the present invention relates to a hinge device with automatic return function for building materials, wherein the return spring is eliminated to reduce the overall length of the hinge device; only the torsion spring associated with the clutch unit is used to provide each The closing force of the door, thus improving the efficiency of the torsion spring to more effectively provide the opening force and closing force of each door; the length of the torsion spring is increased to compensate for the closing force of each door; the inclination angle of the cam diagram is established to strengthen each The closing force of each door is obtained, so a compact structure is obtained and the automatic return function of each door is reliably realized. Background technique [0002] The hinge means separates the two parts from each other or allows on...

AI Technical Summary

Problems solved by technology

When the piston rod and valve are operated by the rotating camshaft, the helical ascending / descending hole can make the rotating force vary in the vertical direction, resulting in about 30% loss

As a result, the upper camshaft cannot play a large role in improving the door closing force, and there is a problem that the overall length of the upper camshaft is somewhat long

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