Piston of pilot valve structure

The utility model provides a piston with a pilot valve structure, which is positioned in a piston cavity of a pilot valve part (200), namely a piston assembly with a reset function is used in a three-position electromagnetic slide valve, and the functions of a traditional piston and a reset spring are integrated on the piston assembly. According to the three-position valve, the positions of the three sliding valve cores of a traditional three-position valve can be switched only through cooperation of the piston assembly and the pre-flow-guiding path, the size of the pilot structure and the size of the traditional pilot structure are not obviously changed, and therefore the size of the sliding valve in the length direction is greatly reduced. Beneficial effects of a specific implementationmeans are referred to an embodiment part. 本实用新型提供了一种先导阀结构的活塞,其位于先导阀部(200)的活塞腔内，即在三位电磁滑阀内使用了具有复位功能的活塞组件，将传统的活塞和回复弹簧的功能集成在了活塞组件上，仅用活塞组件和先导流路配合就可以实现传统的三位阀的三个滑阀阀芯位置的切换，而且本实施例的先导结构与传统先导结构在尺寸上并无明显变化，因此滑阀长度方向上大大减小了尺寸。具体实现手段的有益效果参见实施