1results about How to "Stable damping force" patented technology

This application provides a solenoid valve, including a sleeve, a stationary iron core, an armature assembly, and an excitation assembly. The sleeve defines a receiving cavity, and the sleeve has a first vent and a second vent connected to the receiving cavity. The stationary iron core is fixed to the sleeve. The armature assembly is movably disposed in the receiving cavity along the axial direction of the sleeve. The armature assembly includes an armature and a plug. The armature is arranged along the axial direction of the sleeve, and the plug includes a plug head and an outwardly protruding damping portion. The excitation assembly generates a force that causes the armature and the plug to move away from the first vent, so that the plug head disengages from the first vent. The sleeve has a damping sleeve extending along its axial direction, and the outwardly protruding damping portion protrudes from the surface of the armature and abuts against the inner wall of the damping sleeve. The armature assembly generates a damping force that hinders its movement during movement. The solenoid valve of this application can slow down the movement speed of the armature assembly, reduce noise and vibration, and improve the stability of the solenoid valve.