Floating joint and retainer connection device with pressure relief structure

A floating joint and retainer connection device with pressure relief structure, comprising:

• a fixed retainer having a first side and a second side, and internally defining a receiving space located between the first and the second side;
• and the first side being an open side and the second side being a closed side provided with a through hole communicable with the receiving space;
• an adaptor joint having an engaging section and a fitting section, and including a buffering section located between and connected to the engaging section and the fitting section;
• the adaptor joint having an axially limiting section formed at a junction of the engaging section and the buffering section;
• and the fitting section being extended through the receiving space to project from the fixed retainer via the through hole;
• an elastic element being fitted on and around the fitting section of the adaptor joint and having a front end and a rear end, and the rear end of the elastic element being pressed against the second side of the fixed retainer;
• a fixing element being fitted on and around the fitting section of the adaptor joint to press against the front end of the elastic element, so as to limit the adaptor joint from moving axially relative to the fixed retainer;
• an abutting spacer being located in the fixed retainer and fitted around the buffering section of the adaptor joint;
• and the abutting spacer including an axially protruded section formed on one side thereof for extending through the through hole to abut against the elastic element;
• and
• a spring being fitted around the buffering section with two ends of the spring pressed against another side of the abutting spacer and the axially limiting section of the adaptor joint.