Patent ID: 8810346
Filing Date: 2014-08-19
Classification: H01F

Abstract:
1. An electromagnetic actuator for a solenoid valve comprising an electric coil mounted in an outer magnetic yoke, a first pole part and a second pole part which are secured to the yoke and which each extend circumferentially adjacent a side of an axial free space in which therein moves a magnetic core, mobile in translation under an effect of the electrical power supply of the electric coil and an appearance of a different magnetic polarity at the pole parts and, wherein the electromagnetic actuator includes a tubular part made of magnetic material, circumferentially delimiting at least partially the free space and surrounding the magnetic core, so as to guide a displacement of said magnetic core, said tubular part exhibiting a magnetic continuity with the pole parts and concentrically aligning said pole parts so as to reduce a radial gap between the magnetic core and the magnetic pole parts, said tubular part being a single piece member entirely surrounding said magnetic core and radially contacting said first and second pole parts, said tubular part having an extreme end constituting a stop for said magnetic core and an opposite extreme end with a cross-sectional L shaped flange.