High-Stability Playard Enclosing Rod Assembly and Playard

A high-stability playard enclosing rod assembly, comprising a hinge joint, two upper enclosing rods, two lower enclosing rods, a connecting base, and two first iron elements, wherein the connecting base is fixedly connected inside the hinge joint;

• the two first iron elements are respectively connected to front and rear portions of the connecting base;
• the two first iron elements each are provided with two first guide grooves, wherein the two first guide grooves are symmetrical on left and right;
• the two first guide grooves are arranged in a splayed pattern;
• top left and right ends of the first iron element respectively extend away from the connecting base to form extension portions;
• left and right end surfaces of the first iron element respectively form inclined surfaces;
• the inclined surface is parallel to the first guide groove;
• an arc-shaped groove is formed between a bottom of the extension portion and a top of the inclined surface;
• ends of the two upper enclosing rods adjacent to the hinge joint are respectively connected to second iron elements;
• a thickness of each of the second iron elements is adapted to a distance between the two first iron elements;
• the second iron elements are located between the two first iron elements;
• an end of the hinge joint away from the connecting base is provided with two second guide grooves, wherein the two second guide grooves are symmetrical in a front-to-rear direction and arranged laterally;
• the arc-shaped groove is aligned with an end of the second guide groove adjacent to the first iron element;
• the first iron element is provided with first guide pins and second guide pins;
• the first guide pin and the second guide pin respectively pass through the first guide groove and the second guide groove;
• when the upper enclosing rod is unfolded, the first guide pin is clamped in a top of the first guide groove, and the second guide pin is clamped in the arc-shaped groove;
• and
• ends of the two lower enclosing rods adjacent to the hinge joint are hinged to the hinge joint.