| 摘要 |
A ratchet-like coupling mechanism (20) for releaseably coupling a cleaning head (22) to a handle (24). The mechanism (20) comprises a handle adaptor (28); a sleeve (30); an engagement arm (32); and an engagement wheel (34). Where a liquid delivering handle (24) is used, the handle adaptor (28) operates to adapt the mechanism (20) to avoid interfering with the liquid flowpath. The handle adaptor (28) may be eliminated where a solid handle is used. The sleeve (30) secures to the handle adaptor (28) or directly to the handle, and supports the engagement arm (32). The engagement wheel (34) is secured to the head (22). The arm (32) and wheel (34) present oppositely biased teeth (56,57) allowing the adaptor (28) or handle to be threadably coupled with the head (22), but which must be disengaged, by actuating the arm (32), to uncouple the head (22) from the handle (24).
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