| 摘要 |
A suction nozzle for a vacuum cleaner comprises a suction chamber (7, fig 4), an outlet duct 3 extending from the suction chamber (7, fig 4) for connection to a vacuum source on the vacuum cleaner, a soleplate 13 for supporting the nozzle on a carpeted floor, a suction opening (11, fig 6) in the soleplate 13 which opens into the suction chamber (7, fig 4), and a valve 21 which can be manually operated to open or close a bleed path through the front of the nozzle, the bleed path being defined by a channel (17, fig 5) formed on the underside of the soleplate 13 which is fluidly connected to the outlet duct 3, the channel (17, fig 5) terminating in an entrance slot (15, fig 6) on the front of the nozzle for admitting debris as the suction nozzle is pushed in a forward direction, the channel (17, fig 5) defining a throat downstream of the entrance slot (15, fig 6), the throat having a smaller cross-sectional area than the entrance slot (15, fig 6). The entrance slot (15, fig 6) allows larger debris or dirt to be picked up by the suction nozzle. |
