Patent ID: 6598852
Filing Date: 2003-07-29
Classification: F16K

Abstract:
A solenoid valve comprising a coil assembly including a bobbin made of a synthetic resin and having a center bore, and a coil wound around said bobbin, said coil assembly being accommodated in a solenoid housing made of a magnetic metal and having an end wall at one end thereof; a stationary core magnetically coupled to said end wall and inserted into one end of said center bore; a movable core opposed to said stationary core and inserted into the other end of said center bore; a yoke plate made of a magnetic metal, which has a through-bore in its central portion and which is opposed to the other end of said coil assembly and coupled to the other end of said solenoid housing; a collar made of a non-magnetic material adapted to guide the axial movement of said movable core and inserted into the other end of said center bore through said through-bore; and a valve member which is accommodated in a valve housing connected to said yoke plate and to which a rod operatively connected to said movable core is connected,wherein said valve housing is provided with a guide portion for guiding the axial movement of said rod, and one end of said rod is put into coaxial abutment against the other end of said movable core.