Magnet assembly for a solenoid valve

Patent metadata

Field	Value
Publication number	US-2016307682-A1
Application number	US-201415101694-A
Country	US
Kind code	A1
Filing date	Nov 28, 2014
Priority date	Dec 3, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

The invention relates to a magnet assembly for a solenoid valve, comprising a magnetic core ( 3 ), composed of at least two core elements ( 1, 2 ), and a magnetic coil ( 4 ), said magnetic core being connected in an annular recess ( 5 ) of a core element ( 1 ). According to the invention, the recess ( 5 ) on the side of a terminal surface ( 6 ) which forms the core element ( 1 ), is closed in a media-tight manner via a web portion ( 7 ). The invention further relates to a solenoid valve comprising such a magnet assembly.

First claim

1 . A magnet assembly for a solenoid valve, comprising a magnet core ( 3 ), which is composed of at least two core elements ( 1 , 2 ), and a magnet coil ( 4 ), which is inserted into an annular recess ( 5 ) in a first one of the core elements ( 1 ), characterized in that the recess ( 5 ) is closed in a media-tight manner by a web section ( 7 ) on a side of a pole face ( 6 ) which forms the first one of the core elements ( 1 ).

2 . The magnet assembly as claimed in claim 1 , characterized in that the web section ( 7 ) is part of the pole face ( 6 ) or adjoins the pole face ( 6 ).

3 . The magnet assembly as claimed in claim 1 , characterized in that at least one of the web section ( 7 ) and the pole face ( 6 ) forms a stroke stop for an armature ( 8 ) which interacts with the magnet coil ( 4 ).

4 . The magnet assembly as claimed in claim 1 , characterized in that the recess ( 5 ) is entirely or partially covered by a second one of the core elements ( 2 ) on a side of the first one of the core elements ( 1 ) which is averted from the pole face ( 6 ).

5 . The magnet assembly as claimed in claim 1 , characterized in that the second one of the core elements ( 2 ) is at least partially inserted into the first one of the core elements ( 1 ) which forms the pole face ( 6 ).

6 . The magnet assembly as claimed in claim 1 , characterized in that the first one of the core elements ( 1 ) which forms the pole face ( 6 ) has an annular collar section ( 9 ) which surrounds the second one of the core elements ( 2 ) at least in sections.

7 . The magnet assembly as claimed in claim 6 , characterized in that at least one annular sealing element ( 10 , 11 ) is arranged in a region of the collar section ( 9 ).

8 . The magnet assembly as claimed in claim 6 , characterized in that the annular collar section ( 9 ) is arranged so as to be situated radially on an outside.

9 . The magnet assembly as claimed in claim 1 , characterized in that the second one of the core elements ( 2 ) has a collar section ( 13 ) for receiving at least one annular sealing element ( 14 ).

10 . The magnet assembly as claimed in claim 1 , characterized in that the second one of the core elements ( 2 ) has a recess ( 15 ) for receiving electrical connection lines ( 16 ).

11 . A solenoid valve comprising a magnet assembly as claimed in claim 1 , wherein the solenoid valve has an armature ( 8 ) which is in the form of a flat armature and interacts with the magnet coil ( 4 ).

12 . The magnet assembly as claimed in claim 7 , wherein an annular sealing element ( 10 ) is arranged between the two core elements ( 1 , 2 ).

13 . The magnet assembly as claimed in claim 7 , wherein an annular sealing element ( 11 ) is arranged between the first one of the core elements ( 1 ) and a housing part ( 12 ).

14 . The magnet assembly as claimed in claim 6 , characterized in that the core element ( 1 ) has a maximum outside diameter in a region of the annular collar section ( 9 ).

15 . The magnet assembly as claimed in claim 1 , characterized in that the further core element ( 2 ) has a collar section ( 13 ) for receiving at least one annular sealing element ( 14 ) which is situated radially on an outside.

Assignees

• Bosch Gmbh Robert

Inventors

• Girlinger Gerhard

Classifications

• H01F7/128

  Encapsulating, encasing or sealing · CPC title

• F02M51/0614

  characterised by arrangement of electromagnets or fixed armature · CPC title

• H01F7/1638

  Armatures not entering the winding · CPC title

• F16K31/0675

  Electromagnet aspects, e.g. electric supply therefor · CPC title

• H01F7/081 Primary

  Magnetic constructions · CPC title