| 摘要 |
A mop includes a hollow lower stick including a bottom flared part, lower longitudinal parallel grooves, and intermediate helical grooves; an upper stick slidable in the lower stick; an inner sleeve including a bottom flared member, two steel balls slidably disposed in two opposite lateral tubes proximate the flared member, and a top stopper; a bundle of loose members having both ends fastened to the flared part and the flared member; and an outer sleeve including a flared enlargement adapted to surround and confine the steel balls. After moping, a person may push the enlargement downward toward the flared part for pushing the steel balls inward to urge against the helical grooves, and it is adapted to helically pull the lower stick upward along the helical grooves for moving the lower end of the bundle of loose members upward toward the upper end thereof for drying.
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