Quick-connection waterproof and dustproof joint and a quick-connection waterproof and dustproof connecting structure

A quick-connection waterproof and dustproof connection structure, comprising a housing (9) and a quick-connection waterproof and dustproof joint;

• the housing (9) is provided with a through hole (91);
• the quick-connection is waterproof and dustproof joint comprises a rod part (1);
• one end of the rod part (1) is provided with a gradient part (2);
• the end of the gradient part (2) away from the rod part (1) is provided with a constriction part (3);
• a limit part (4) is provided at one end of the constriction part (3) away from the gradient part (2);
• the quick-connection waterproof and the dustproof joint further comprises an elastic part (5) movably sleeved on the rod part (1);
• the rod part (1), the gradient part (2), and the constriction part (3) are movably penetrated through the through hole (91);
• after the rod part (1), the gradient part (2) and the constriction part (3) pass through the housing (9), the elastic part (5) sleeved on the rod part (1) is sleeved outside the constriction part (3) after passing through the gradient part (2);
• the elastic part (5) cooperates with the limit part (4) to fix the housing (9) with the quick-connection waterproof and the dustproof joint;
• wherein the rod part (1) is cylindrical;
• the gradient part (2) is a truncated cone;
• the constriction part (3) is cylindrical;
• a cross-sectional shape of the through hole (91) is circular;
• the limit part (4) is cylindrical;
• a top surface of the gradient part (2) is connected with the rod part (1);
• a bottom surface of the gradient part (2) is connected with the constriction part (3);
• the radius of the bottom surface of the gradient part (2) is greater than the radius of the top surface of the gradient part (2);
• a radius of the constriction part (3) is greater than a radius of the rod part (1);
• a radius of the constriction part (3) is smaller than the radius of the bottom surface of the gradient part (2);
• a radius of the rod part (1) is the same as the radius of the top surface of the gradient part (2);
• a radius of the limit part (4) is greater than the radius of the bottom surface of the gradient part (2);
• a radius of the through hole (91) is greater than the radius of the bottom surface of the gradient part (2);
• the radius of the through hole (91) is smaller than the radius of the limit part (4).