Cylinder lock, clutch device and unlocking device comprising thereof

A cylinder lock, comprising:

• a sleeve;
• and
• a key plug housed in the sleeve and having an output portion to output an interrupted motion of a clutch device by moving in an insertion and extraction direction by an insertion and extraction of a matching key;
• wherein the output portion of the key plug functions as a pivoting spindle that pivotally supports an input clutch element and an output clutch element of the clutch device when moved in an insertion direction relative to said sleeve into an output state by an insertion of the matching key, and
• wherein the key plug includes a polygonal section to fit inside of the sleeve so as to allow the key plug to move in the insertion direction and to prevent the key plug from rotating inside of the sleeve and,
• wherein the key plug is movable with the matching key in the insertion direction relative to said sleeve upon insertion of the matching key.