Control mechanism of full-automatic multi-folded umbrella

A control mechanism of a full-automatic multi-folded umbrella, disposed between an umbrella handle and a middle rod set for controlling an umbrella opening/closing transformation ratio mechanism, the middle rod set comprising at least three sleeves, including an outer sleeve, a middle sleeve and an inner sleeve;

• a top end of the middle rod set being connected with an upper nest, a lower nest being fitted on the middle rod set;
• the control mechanism comprising a bolt, a nut and a push rod disposed on the bolt and cooperating with the bolt, the push rod being connected with the nut and a top end of the middle sleeve, a lower end of the bolt being driven by a power source in the umbrella handle to turn clockwise or counterclockwise for the nut to be moved up and down along the bolt;
• the power source being controlled by a button on the umbrella handle,
• wherein an upper end of the outer sleeve of the middle rod set is provided with an outer sleeve pulley, an outer sleeve fixing ring being fixed to a lower end of the outer sleeve to cooperate with the outer sleeve, an outer sleeve plug has a central through hole;
• a middle sleeve plug with a middle sleeve pulley fixed to the top end of the middle sleeve, a middle sleeve fixing ring fixed to a lower end of the middle sleeve, an outer side of the middle sleeve fixing ring provided with a middle sleeve fixing ring pulley;
• a lower end of the inner sleeve being fixed to the umbrella handle;
• and
• the middle sleeve plug is made of a plastic material with a hanging hole to cooperate with the push rod, the hanging hole being provided with a metallic ring therein;
• the middle sleeve plug further having a fixing hole to fix a pull rope and cooperate with a metallic pipe, the metallic pipe having a guide curved edge at one end surface thereof.