| 摘要 |
<p>A cleaning device includes a housing having a frame including longitudinally spaced front and rear wall portions and transversely spaced lateral portions, and a plurality of support walls which extend in substantial parallelism with the lateral wall portions, on the one hand and with the front wall portion, on the other hand, and with spacing therefrom. The support walls are formed with bearing recesses which have open ends facing toward the surface to be cleaned when the cleaning device is in use, and at least one cover is provided which has respective closing portions which close the open ends of the bearing recesses and circumferentially complement the latter. The device further includes a plurality of wheels which engage the surface to be cleaned, and at least one cleaning body, such as a brush, which is mounted on the housing for rotation and driven into rotation in response to rotation of the wheels during the engagement of the latter with the surface to be cleaned. Each of the wheels is mounted on a shaft which is partly received in at least two of the above-mentioned bearing recesses and held therein by the closing portions of the cover. A connecting arrangement connects the cover to the frame of the housing. One or a pair of corner-sweeping brushes may also be mounted on the housing, at the front lateral regions thereof for rotation about a respective axis which extends from the housing toward the surface to be cleaned. One bearing for one end of a shaft of the corner-sweeping brush is formed in a support wall which extends substantially parallel to the surface to be cleaned, while the other end of the shaft is supported in a cover. The housing, including the frame and the support walls, is a one-piece body of injection-molded synthetic plastic material.</p> |
