Assembling method of electromagnetic valve assembly

Abstract

The invention discloses an assembly structure of an electromagnetic valve, which comprises a valve sleeve, a valve shell, an armature, valve rods, a restoring spring and a valve seat, wherein one end of the valve shell, which is inserted to the valve seat, is provided with a hole step, the valve seat is inserted to the shell and riveted in the hole step, the valve rods are placed in groups in advance and then taken and installed according to the specific needs of the valve seat and the valve shell, and therefore, by adopting the selection and installation mode of the valve rod, the electromagnetic valve can be assembled rapidly and accurately.

Description

technical field [0001] The present invention relates to a method for assembling a solenoid valve used in a hydraulic control device, in particular to a solenoid valve used in an anti-lock brake system (ABS system) or an electronic stability program system (ESP system) of an automobile. A method of assembling a valve assembly structure for a valve. Background technique [0002] Common solenoid valves, such as figure 1 As shown (with the valve open), there is a purely mechanical valve assembly in addition to the solenoid assembly. The valve assembly includes a valve sleeve, a valve casing, an armature, a valve stem, a return spring, and a valve seat. Seal welding is performed between the valve sleeve and the valve casing, and the valve sleeve and the valve casing withstand the pressure generated in the hydraulic system. , and transmit this pressure downward to a fluid component (not shown), the upper end of the armature sticks to the inner wall of the valve sleeve, and the l...

AI Technical Summary

Problems solved by technology

Since the valve seat and the valve housing are tightly fitted by interference, and there is no limit surface between the two parts, it is easy to press too much during press-fit assembly, or because of the elastic deformation of the material, after the press-fit is completed and the pressure is removed The valve seat rebounds, causing the valve seat not to be pressed in place, or due to the repeated action of electromagnetic force during the long-term use of the valve, the valve seat will have a relative displacement with the valve housing, making the air gap G larger

Therefore, in order to control the pressing stroke very accurately, the requirements for dynamic displacement monitoring and pressure control of the manufacturing equipment are very high. Even so, the scrap rate in the manufacturing process is also high, and the reliability of the valve cannot be well guaranteed.

Images