String tying system

A novel string tying system, comprising a middle frame, a string wheel, a rotating cover, a rotating clamping member, a clutch rotating disc and a base, wherein the middle frame is buckled with the base;

• the string wheel and the clutch rotating disc are arranged between the middle frame and the base;
• the rotating cover covers the middle frame;
• the string wheel is connected to the base by means of the clutch rotating disc;
• the rotating cover is provided with a first accommodating groove downwards;
• the first accommodating groove is internally provided with first buckles;
• the rotating clamping member is provided with clamping blocks corresponding to the first buckles;
• an upper end of the middle frame is provided with a first avoiding hole in communication with an interior of the middle frame;
• an outer side of the rotating clamping member is provided, in a radially outward protruding manner, with a first flange for buckling an edge of the first avoiding hole;
• the rotating clamping member is provided with a buckling portion and a plurality of first clamping teeth arranged in an annularly arrayed manner;
• the clutch rotating disc is provided upwards with a sliding buckle corresponding to the buckling portion;
• the string wheel is provided with a second avoiding hole;
• the sliding buckle penetrates through the second avoiding hole to be clamped with the buckling portion of the rotating clamping member;
• the string wheel is provided upwards with first clamping grooves corresponding to the plurality of first clamping teeth;
• the clutch rotating disc is connected to the rotating clamping member through cooperation of the sliding buckle with the buckling portion;
• and during usage, the rotating cover is rotated downwards, and the rotating clamping member is clamped with the string wheel through cooperation of the first clamping teeth and the first clamping grooves.