Headlamp cleaning device for vehicle, has spring which expands according to hydraulic pressure of cleaning liquid supplied in outer cylinder in order to expand the outer cylinder

摘要

A dust cover (59), which is made of elastic material, contacts the rear surface of a flange section (29) provided to the tip or nozzle forming portion (28) of an outer cylinder (2) during the contraction of the cylinder. A spring (27) expands according to the hydraulic pressure of a cleaning liquid supplied in the outer cylinder in order to expand the outer cylinder.