后制动器分泵总成

Sub pump assembly of rear brake

Abstract

The utility model discloses a sub pump assembly of a rear brake, and the sub pump assembly comprises a cylinder body, wherein the cylinder body is internally provided with a cylindrical oil chamber and the cylinder body is provided with an oil feeding hole and an air discharging hole which are communicated with the oil chamber; a piston is arranged inside the oil chamber and a leather collar is sleeved outside the piston; a protection cover is clamped at the cylinder body and the oil feeding hole is internally provided with a dustproof plug; and the air discharging hole is internally provided with an air discharging screw and an air discharging screw cap. According to the sub pump assembly of the rear brake, the protection cover is arranged at the upper end of the piston and the sealing leather collar is at the side edge of the piston, so that dust and air are effectively prevented from entering the oil chamber, and the sub pump assembly does not have a problem after a wheel cylinder is used for a long period of time.
本实用新型公开了一种后制动器分泵总成,包括缸体,缸体内部开有圆柱形的油室,缸体上开有与油室相通的进油孔和放气孔;油室内部安装活塞,活塞外套装有皮圈;缸体上卡装有防护罩,进油孔内安装有防尘塞;放气孔内安装有放气螺钉和放气螺钉帽。本实用新型通过在活塞上端安装防护罩,并在活塞侧边安装密封皮圈,能够有效防止灰尘和空气进入油室,保证了轮缸长时间使用也不会出现问题。

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    Publication numberPublication dateAssigneeTitle
    CN-102384189-AMarch 21, 2012芜湖众发汽车制动系统有限公司Wheel cylinder assembly of rear brake