公开(公告)号：US4977639A

公开(公告)日：1990-12-18

申请号：US392897

申请日：1989-08-14

申请人： Yutaka Takahashi ,  Yoshihiro Noguchi ,  Takahiro Yanagida ,  Tomohisa Imai

发明人： Yutaka Takahashi ,  Yoshihiro Noguchi ,  Takahiro Yanagida ,  Tomohisa Imai

IPC分类号： A47L9/28

CPC分类号： A47L9/2894 ,  A47L9/2826 ,  A47L9/2847 ,  A47L9/2889

摘要： A floor detector for a power brush of a vacuum cleaner comprises a lift sensor S1 and a floor sensor S2. The lift sensor S1 has a movable member which yieldably displaces when the power brush is placed on a relatively soft floor while the floor sensor S2 has a movable member which yieldably displaces when the power brush is placed on a relatively hard floor. Each of movable members is detected its movement by a corresponding light sensor which provides a signal representative of the movements. The signals from the light sensors are sent to a control circuit which controls a drive source for driving the brush member of the power brush. In this manner, the brush member is rotated when the power brush is placed on a relatively soft floor such as a carpeted floor and is not rotated when the power brush is placed on a relatively hard, flat, smooth floor.

摘要翻译： 用于真空吸尘器的电刷的地板检测器包括升降传感器S1和地板传感器S2。 电梯传感器S1具有可动构件，当电刷被放置在相对较软的地板上时，可移动构件可移动，而地板传感器S2具有当电刷被放置在相对硬的地板上时可移动的可移动构件。 通过提供表示运动的信号的相应的光传感器检测每个可移动部件的运动。 来自光传感器的信号被发送到控制电路，该控制电路控制用于驱动电刷的刷构件的驱动源。 以这种方式，当电刷被放置在诸如地毯地板的相对软的地板上时，刷构件旋转，并且当电刷被放置在相对硬的，平坦的，光滑的地板上时，刷构件不旋转。