| 摘要 |
<p>The invention concerns a suction-type swimming pool cleaner (10) having an elongate body (16) formed by a suction head (12) and an elongate, tubular structure (14) extending from the suction head. The orientation of the body (16) is at least partially controlled by a float structure (44) that includes a float (48), arms (46) carrying the float and a connection bracket (52) which connects the arms in a releasable manner to the body. The device (52) allows the float structure to be connected to the body at any selected one of a number of different positions along the length of the body. The head includes a valve chamber (30) in which a wedge shaped hammer (32) which oscillates in the chamber under the influence of suction flow through the head. At either end of its stroke the hammer seats against shoulders in the chamber. The shoulders are partially rebated and partially sloped to ensure that they are flushed clean of any particulate matter which could interfere with proper seating of the hammer. The cleaner can also include a position-adustable weight on the body to control the operative orientation of the cleaner.</p> |
