Adjustable safety distance spacer for bicycles

The invention relates to an adjustable safety distance spacer for bicycles, comprising two guide tubes ( 1, 2 ), a spacer rod ( 5 ) which moves inside the aforementioned guide tubes and which passes through perforated plugs ( 9 ), a refracting rotor comprising four curved blades ( 7 ) and a circumferential protector ( 6 ) which is disposed at one of the ends of the spacer rod and which is solidly connected to said rod by means of a safety clevis ( 8 ), and two supports ( 3, 4 ) which are used to fix the guide tubes ( 1, 2 ) to the bicycle frame ( 10 ). In this way, the cyclist can adjust the size of a safety signal strip quickly, comfortably and safely using just one hand when he/she is being overtaken by another vehicle, thereby preventing the cyclist from being hit owing to the incompetency or carelessness of the driver of the overtaking vehicle.