| 摘要 |
Mouth piece for a vacuum cleaner device, and vacuum cleaner device The invention relates to a mouth piece (1) for a vacuum cleaner device, comprising a mouth piece body part (2) and a supporting wheel (3) rotatably mounted to said body part (2) such that said body part (2) can be rolled forwardly and backwardly, respectively. Further, the mouth piece (1) comprises an elongated sweeping unit (9), such as an elongated brush (9), and two elongated air inlet openings (10,11) positioned along each other at the bottom side of the mouth piece body part (2). A first elongated air inlet opening (10) is provided in front of the brush (9) and the other (11) is provided at the rear of said brush (9). An air outlet opening (12), connected to the first air inlet opening (10) via a first channel (13) and connected to the second air inlet (11) via a second channel (14), is provided for connection to a vacuum cleaner device. Furthermore, the mouth piece (1) comprises a valve unit (15) for alternatingly closing the first channel (13) and opening the second channel (14), and opening the first channel (13) and closing the second channel (14). The valve unit (15) comprises a valve flap (16) coupled to the supporting wheel (3), and is arranged such that the first channel (13) is opened and the second channel (14) is closed when the mouth piece body part (2) is rolled forwardly and such that the first channel (13) is closed and the second channel (14) is opened when the mouth piece body part (2) is rolled backwardly. |
