Automatic Folding Blade Type Fan Mounting Frame Structure

An automatic folding blade type fan mounting frame structure, comprising a main machine, wherein the main machine is provided with a rotatable fan blade mounting frame;

• the rotatable fan blade mounting frame is provided with at least two mounting holes distributed along its circumference, and fan blade assemblies capable of rotating relatively are arranged on the mounting holes of the fan blade mounting frame;
• the fan blade assemblies comprises blades extending away from rotation center so that the fan blade assemblies expands outward under the action of centrifugal force when the fan blade mounting frame rotates;
• the fan blade mounting frame is provided with a folding structure capable folding the fan blade assemblies when it stops rotating;
• tie rods are arranged between two adjacent fan blade assemblies, and two ends of the tie rods are respectively connected to eccentric positions of the two fan blade assemblies, so that each fan blade assembly pull the adjacent fan blade assemblies to rotate synchronously when rotating;
• the tie rod further comprises a straight section and an arc section, a center line AB of the straight section and a center line BC of the arc section;
• when the fan blades in unfolded state, the center line BC of the arc section of one tie rod is tangent to the center line AB of the straight section of another adjacent tie rod;
• the fan blade mounting frame is provided with reinforcing convex ribs between two adjacent mounting holes, wherein the reinforcing convex ribs are in a shape of a long strip and its two ends are respectively close to the two adjacent mounting holes.