Patent ID: 8632051

Claim:
A solenoid for use in media-controlling valves, comprising: a magnetic core delimiting an armature space and defining a tappet boring extending axially with reference to the armature space; a tappet housed axially movably within the tappet boring; an armature movably supported in the armature space and acting on the tappet; a coil carrying windings of a conductor around the magnetic core; and a media-or liquid-proof boundary element consisting at least partly of elastic material provided between the tappet and the magnetic core, wherein the boundary element ( 8 ) comprises a fastening area ( 9 ) for a sealing rigid attachment of the boundary element ( 8 ) with the tappet ( 3 ), a connection area ( 10 ) for a sealing rigid attachment of the boundary element ( 8 ) with the magnetic core ( 7 ), and an intermediate part ( 11 ) provided between the fastening area ( 9 ) and the connection area ( 10 ), and the intermediate part ( 11 ) surrounds at least part of the length of the tappet ( 3 ) like a hose or a sleeve, wherein movement of the tappet in a first direction elongates and radially reduces the size of the intermediate part of the boundary element, and movement of the tappet in a reverse direction shortens and radially enlarges the size of the intermediate part of the boundary element.