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    • 91. 发明授权
    • Pump drive unit for battery operated fluid dispensers
    • 用于电池驱动的液体分配器的泵驱动单元
    • US07318539B2
    • 2008-01-15
    • US10823258
    • 2004-04-13
    • Marc L. VitantonioCraig M. SaundersDonald C. Fuchs, Jr.Daniel J. Wanhainen
    • Marc L. VitantonioCraig M. SaundersDonald C. Fuchs, Jr.Daniel J. Wanhainen
    • B65D88/54F16H53/00
    • B05B9/0861B05B11/3032Y10T74/2101Y10T74/2107
    • A battery operated, handheld fluid dispenser comprises a supply container having a body portion and a narrow neck extending upwardly therefrom. A pump and discharge unit is mounted on the upper end of the neck and comprises a pump diaphragm and pump chamber for pumping liquid from the container to a discharge nozzle. A battery powered pump drive unit is mounted on the container and comprises an electric motor having an output shaft coupled with the pump diaphragm through a cam and cam follower arrangement to displace the diaphragm through a pump stroke when the motor is energized. The cam is rotatably driven by the motor, and the cam follower is attached to the diaphragm, whereby rotation of said cam axially displaces the diaphragm, and the cam and cam follower have interengaging dual cam faces for balancing lateral forces therebetween during rotation of said cam relative to said cam follower.
    • 电池操作的手持流体分配器包括具有主体部分和从其向上延伸的窄颈部的供应容器。 泵和排放单元安装在颈部的上端,并且包括用于将液体从容器泵送到排出喷嘴的泵隔膜和泵室。 电池供电的泵驱动单元安装在容器上,并且包括电动机,其具有通过凸轮和凸轮从动装置与泵隔膜联接的输出轴,以在电动机通电时通过泵行程移动隔膜。 凸轮由电动机可旋转地驱动,并且凸轮从动件附接到隔膜,由此所述凸轮的旋转轴向地使隔膜移动,并且凸轮和凸轮从动件具有相互接合的双凸轮面,用于在所述凸轮的旋转期间平衡其间的横向力 相对于所述凸轮从动件。