Wiper unit for floor cleaning machine especially for tiled areas

摘要

The wiper unit comprises front and rear flexible blades (6X,6Y). The lower area of the front blade is curved horizontally towards the rear blade and a contact face (6M) is formed whose distal end is directed upwards and is fixed underneath the cover (6Z). A small space (12) is formed between the rear and front blades to produce a suction chamber (6H) in which the suction force of the blower acts. Several concave guide grooves (6T) are formed on the cover in the base surface of the horizontally curved contact face. A dirty water intake opening is formed in a surface of the upwardly directed area which connects the suction chamber and opposing space (12) together. An air intake opening (8T) is provided in the middle of the cover on which the suction force of the blower acts intensified.