Collant coupling for connecting coolant lines

A fluid coupling for connecting fluid lines, comprising:

• a connector plug sealingly connectable to a first fluid line;
• a connector sleeve sealingly connectable to a second fluid line, said plug being insertable into the sleeve in an axial direction;
• and
• a closure arrangement for axially securing the plug and sleeve in an interlocked position;
• wherein the closure arrangement includes an annular combination element of a nonconductive material provided between the plug and the sleeve, which combination element keeps the plug radially centered and axially positioned in the sleeve without contact between the plug and sleeve, which combination element essentially positively fills up the sleeve in order to stably support the plug in the sleeve, said combination element having at least one sealing element supported on an inner periphery, and wherein the closure arrangement is provided with a closure ring held axially positively on the sleeve, in which closure ring a closure clamp is bound in captive fashion, which closure clamp can be radially spread apart for the sake of axial insertion and removal of the plug and which clamp axially positively locks the plug in the sleeve in the interlocked position.

A fluid coupling for connecting fluid lines, comprising:

• a connector plug sealingly connectable to a first fluid line, said plug comprising a free face end at an axial end thereof and a radially widened insertion collar on an outer periphery thereof, said insertion collar being a first axial distance from said free face end;
• a connector sleeve sealingly connectable to a second fluid line, said sleeve comprising a receiving region into which said plug is axially insertable and a stop edge axially facing said plug;
• and
• a closure arrangement for axially and radially securing the plug and the sleeve in an interlocked position, said closure arrangement including an annular combination element comprising an end edge at an axial end thereof, at least one elastic sealing element on an inner periphery thereof, and a radially widened segment on an inner periphery thereof, said widened segment being a second axial distance from said end edge and corresponding in shape to said insertion collar of said plug, said second axial distance being a small distance greater than said first axial distance,
• said annular combination element being fitted into said receiving region of the sleeve such that said end edge of the annular combination element abuts said stop edge of the sleeve, said plug being axially insertable into said annular combination element such that in an assembled position said insertion collar of the plug abuts said widened segment of the annular combination element and such that said free face end of the plug is spaced at said small distance from said stop edge of the sleeve, said annular combination element being formed of a nonconductive and dimensionally-stable material in order to maintain the plug radially centered and axially positioned in the sleeve without contact between the plug and sleeve.