雨刮电机的工作原理
雨刮器的动力源来自电动机，它是整个雨刮器系统的核心。雨刮器电
动机的质量要求是相当高的。它采用直流永磁电动机，安装在前档风玻璃上的
雨刮器电动机一般与蜗轮蜗杆机械部分做成一体。蜗轮蜗杆机构的作用是减速
增扭，其输出轴带动四连杆机构，通过四连杆机构把连续的旋转运动改变为左
右摆动的运动。
雨刮器电动机采用3刷结构以方便变速。间歇时间由间歇继电器控制，利用电机的回位开关触点与继电器电阻电容的充放电功能使雨刮器按照一定周
期刮扫。雨刮器的刮片胶条是直接清除玻璃上雨水和污垢的工具。刮片胶条通
过弹簧条压向玻璃表面，它的唇口必须与玻璃角度配合一致，方能达到所要求
的性能。
一般情况下在汽车组合开关手柄上有雨刮器控制旋扭，设有低速、高速、间歇3个档位。手柄顶端是洗涤器按键开关，按下开关有洗涤水喷出，配
合雨刮器洗涤档风玻璃。洗涤器系统是目前汽车上很普通的装置，它由储水箱、水泵、输水管、喷水嘴组成。其中储水箱一般是1.5升～2升的塑料罐，水泵
是一种微型电动离心泵，通过它将储水箱的洗涤水输向喷水嘴，经2～4个喷水嘴的挤压作用将洗涤水分成细小的射流喷向档风玻璃，配合雨刮器起到清洁档
风玻璃的作用。
Wiper Motor, the power source of the wiper blade, is the core of the whole wiper system. Therefore, the quality of the wiper motor
must be guaranteed to ensure its performance. The wiper motor is a permanent-magnet direct current (DC) one. It is equipped on the front windscreen glass with the mechanical parts of the worm gear. The worm gear functions to slow down and increase torque. Its output shafts spur four-bar linkage, by which the movement is changed from rotary
to swinging.
Three-brush structure is adopted to make speed change more convenient. The intermittent relay, by which the interval is controlled, utilizing the return of switch contacts and the charge-discharge function of the resistor-capacitor in the relay, drives the wiper to wipe in a certain cycle. The wiper blade tape, the tool to clean the rainwater and the filth on the glass, presses the surface of the glass with springs. Only when the tip of the blade is in a certain angle with the glass, can the required function be realized.
Generally speaking, there is a wiper control knob, with stalls of low peed, high speed and intermission, on the handle of auto combination switch. The top of the handle is the key switch, after pressing which water will erupt to wiper blade, of the scrubber. The scrubber system, consisting of plastic water tank (1.5—2 liters), micro-electric centrifugal water pump, pipes, spray nozzles, is very ordinary equipment in automobiles. Water in the tank is supplied through the pump to 2—4 spray nozzles, by which it is extruded into trickles. Then the trickles are sprayed onto the windshield glass, to clean the glass with the wiper blade.
汽车雨刮器
疑问：
1“涡轮蜗杆”和“输出轴”有几个我不清楚，可能单复数用得不对。
2“它的唇口必须与玻璃角度配合一致”，“它”是指“胶条”吗？“与玻璃角度配合一致”应该怎样理解？
3 许多术语我都不懂，有可能翻译错了。
4 部分句子可能读着比较拗口，因为有点长了。
5 “make speed change more convenient”感觉不地道，但没有想出更好的译法。