公开(公告)号：US3869654A

公开(公告)日：1975-03-04

申请号：US46661474

申请日：1974-05-03

申请人： GEN MOTORS CORP

发明人： BISCHOFF LEO E ,  KELLER JR CHRIS F

IPC分类号： B60S1/48 ,  A47L1/04 ,  B60S1/08 ,  H02P1/04

CPC分类号： B60S1/483 ,  Y10S318/02

摘要： A windshield wiper control circuit which provides continuous and pulse wiping modes and which includes a wash unit override through which the washer unit may be energized while the wiper is operating in either mode. The drive motor energizing circuit is completed through the contacts of an electrical relay, the operating coil of which may be grounded through three separate circuits including, respectively, the contacts of a selector switch and a manual wash cycle switch in parallel, a transistor Darlington pair, and two normally closed contacts which are operated by the drive motor to the electrical circuit open condition when the wiper is in the inner wipe or ''''home'''' position. When the selector switch is operated to the Run position, the relay operating coil and drive motor are continuously energized to operate the wiper in the continuous mode and when operated to the Pulse position, the selector switch ground is removed from the relay operating coil and ground therefor is provided through the transistor Darlington pair which are triggered conductive at spaced intervals by a pulse control timing circuit coupled thereto to operate the wiper in the pulse mode. When the manual wash cycle switch is operated to the Wash position while the wipers are off or in either operating mode, the washer unit is immediately activated to deliver wash fluid to the windshield during a wash cycle. In addition, the wiper motor is immediately reactivated to an operating condition. At the conclusion of the wash fluid delivery cycle, additional drying wipes are provided and then the unit automatically returns to its previous operating mode.

摘要翻译： 一种挡风玻璃刮水器控制电路，其提供连续和脉冲擦拭模式，并且其包括洗涤单元覆盖，当刮水器以任一模式操作时，洗涤单元可以通过该清洗单元覆盖。 驱动电机通电电路通过继电器的触点完成，该继电器的工作线圈可以通过三个分开的电路接地，分别包括并联的选择开关和手动洗涤循环开关的触点，晶体管达林顿对 以及两个常闭触点，当擦拭器处于内部擦拭或“回位”位置时，由驱动马达操作至电路打开状态的两个常闭触点。 当选择开关操作到运行位置时，继电器工作线圈和驱动电机连续通电，以连续模式操作刮水器，当操作到脉冲位置时，选择开关接地从继电器工作线圈和地 因此通过晶体管达林顿对提供，其通过与其耦合的脉冲控制定时电路以间隔间隔触发导电，以在脉冲模式下操作擦拭器。 当手动清洗循环开关在擦拭器关闭或处于任一操作模式下操作到清洗位置时，洗衣机单元立即被激活，以便在洗涤循环期间将清洗流体输送到挡风玻璃。 此外，刮水器马达立即重新启动到工作状态。 在清洗液输送循环结束时，提供额外的干燥湿巾，然后单元自动返回到其先前的操作模式。