PIPE COUPLER TO RELEASE A FIXED PIPE BY A FIXING KEY THROUGH A SEPARATION GUIDE CYLINDER HAVING AN INCLINATION PORTION AND TO IMPROVE THE COMBINATION FORCE BY FORMING A CLEARANCE PREVENTION WALL AND A FIXING GROOVE

摘要

PURPOSE: A pipe coupler is provided to stably connect pipes and to easily release the connected pipes. CONSTITUTION: A pipe coupler contains a separation guide cylinder(60) and a combination nut. The separation guide cylinder releases the fixed state of a fixing piece(52) of a fixing key by pushing and expanding the fixing piece. The combination nut fixes or separates components inside the pipe coupler by fixing the separation guide cylinder and combining with a connection portion. The lower part of the separation guide cylinder is extended upward more and more. The upper part of the inclined portion is folded inward. An opening portion is formed in the combination nut to insert the separation guide cylinder by opening the center. A screw groove is formed inside the combination nut. A downward folded portion is formed in the combination nut by folding inward and extending. A sill is formed in the lower part of the downward folded portion. A clearance prevention wall to contact and support the outer face of the inclined portion by expanding the caliber of the combination nut. Thereby, the airtight property and the durability of the pipe coupler is improved.