The utility model relates to a waterproof, anti-adhesion and anti-icing electromagnetic switch for starter, which comprises a switch shell, two static contacts fixed on the static contact seat at the bottom of the switch shell, an annular electromagnetic coil fixed on the inner wall of the circle of the switch shell and a movable contact seat, a movable contact rod penetrated through a shaft hole in the movable contact seat, a movable contact plate arranged at the bottom of the movable contact rod, and a movable contact rod fixed on the inner wall of the switch shell. The sliding sleeve of the circumferential inner wall of the electromagnetic coil is arranged in the moving iron core of the sliding sleeve, and a conical hole is arranged at the middle shaft hole of the lower part of the moving contact seat, and a conical plugging is arranged at the lower part of the moving contact rod body; a limiting sleeve is arranged at the bottom of the moving iron core, a radially symmetrical waist groove is arranged on the side wall of the limiting sleeve, a cylindrical pin is arranged at the top of the moving contact rod, and a cylindrical pin is arranged at Two wedge-shaped plugs arranged radially symmetrically between the static contact and the movable contact are arranged in the static contact seat, and a radial compression spring is connected between the wedge-shaped plug and the circumferential inner wall of the static contact seat. The utility model can prevent water vapor from entering the interior of the electromagnetic switch, prevent the moving contact sheet from adhering to the static contact, and prevent the static contact from freezing.
【技术实现步骤摘要】
防水、防粘连、防结冰起动机电磁开关
本专利技术涉及起动机电磁开关,尤其涉及一种防水、防粘连、防结冰起动机电磁开关。
技术介绍
传统的起动机电磁开关包括开关壳、固设于开关壳底部的静触座、固设于静触座上的二个静触头、固设于开关壳圆周内壁上下布置的环形电磁线圈与动触座、穿设于动触座中轴孔的动触杆、设于动触杆底部的动触片、设于电磁线圈圆周内壁的滑套,设于滑套内的动铁芯、连接在动铁芯与动触座间的回位弹簧。其中,动触片是一个控制流经起动机电枢电流的双触点结构,动触片两端分别对应两个静触头,当电磁线圈充电,动铁心下移,从而驱动动触杆及动触片下移,使动触片两端分别与两个静触头相接导通电流,但其存在如下问题:若汽车熄火后置于低温环境中,起动机电磁开关静触头座内部作为一个相对封闭空间,开始向外散发热量,作为静触头的两个T型螺栓,其材质是金属,而且腔体外部端连接腔体导线,内部相对高温度环境下,因此热量流失的比周围的塑料材质的静触头座更快,温度先于其他部件降至0℃以下,水蒸汽进入电磁开关内部,并优先在两个静触头表面的触点区域凝结成冰,而触点结冰的电磁开关不能导通电路,起动机无法正常起动;且动触片与静触头每次在电磁开关接通瞬间都会存在一次烧蚀,易造成动触片与静触头粘连。
技术实现思路
本专利技术是为了解决上述技术问题,提供一种防水、防粘连、防结冰起动机电磁开关,其可防止水蒸汽进入电磁开关内部、防止动触片与静触头粘连、防止静触头结冰。本专利技术的技术解决方案是:一种防水、防粘连、防结冰起动机电磁开关,包括开关壳、固设于开关壳底部的静触座、固设于静触座上的二个静触头、固设于开关壳圆周内壁上 ...
【技术保护点】
1.一种防水、防粘连、防结冰起动机电磁开关,包括开关壳、固设于开关壳底部的静触座、固设于静触座上的二个静触头、固设于开关壳圆周内壁上下布置的环形电磁线圈与动触座、穿设于动触座中轴孔的动触杆、设于动触杆底部的动触片、设于电磁线圈圆周内壁的滑套,设于滑套内的动铁芯、连接在动铁芯与动触座间的回位弹簧,其特征在于:在动触座下部中轴孔处设有锥形孔,在动触杆杆身位于动触座下方设有锥形封堵,锥形孔锥度与锥形封堵锥度一致;在动铁芯底部设置下端敞口的限位套,限位套套在动触杆顶部,且在动触杆顶部设置横向圆柱销,在限位套侧壁设有二个径向对称的竖直腰型槽,圆柱销两端位于对应侧腰型槽内;在静触座内位于静触头与动触片之间设有二个径向对称布置的楔形封堵,且在楔形封堵与静触头座圆周内壁之间连接径向压缩弹簧。
【技术特征摘要】
1.一种防水、防粘连、防结冰起动机电磁开关,包括开关壳、固设于开关壳底部的静触座、固设于静触座上的二个静触头、固设于开关壳圆周内壁上下布置的环形电磁线圈与动触座、穿设于动触座中轴孔的动触杆、设于动触杆底部的动触片、设于电磁线圈圆周内壁的滑套,设于滑套内的动铁芯、连接在动铁芯与动触座间的回位弹簧,其特征在于:在动触座下部中轴孔处设有锥形孔,在动触杆杆身位于动触座下方设有锥形封堵,锥形孔锥度与锥形封堵锥度一致;在动铁芯底部设置下端敞口的限位套,限位套套在动触杆顶部,且在动触杆顶部设置横向圆柱销,在限位套侧壁设有二个径向...
【专利技术属性】
技术研发人员:何为,冷方亮,郝立国,王建,郝冶,
申请(专利权)人:锦州汉拿电机有限公司,
类型:发明
国别省市:辽宁,21
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