Electromagnetically operable valve and method for producing a magnet housing for a valve
AssigneeRobert Bosch GmbH
InventorsKlaus Noller, Werner Hanft, Hubert Stier
Life of this patent
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Abstract
An electromagnetically operable valve having an electromagnetic circuit which includes at least one solenoid coil, a core used as internal pole, and an armature, as well as a magnet housing at least partially surrounding the solenoid coil. The magnet housing is produced from a sheet-metal blank with the aid of rolling or bending. The magnet housing has a middle housing area that is adjoined in the axial direction on both sides by attachment areas which have a smaller outside diameter than the housing area. The valve is particularly suitable as a fuel injector for fuel-injection systems of mixture-compressing internal combustion engines with externally supplied ignition.
Claims5
A method for producing a magnet housing for a valve, the magnet housing at least partially surrounding a solenoid coil, the method comprising the steps of:
- (a) forming a sheet-metal blank from a sheet metal, the sheet-metal blank having a middle area and two mutually opposite edge areas adjoining the middle area along a first extension line, the edge areas projecting beyond the middle area along a second extension line disposed at a right angle to the first extension line, a plurality of recesses being provided in the edge areas;
- (b) forming the sheet-metal blank into a circular shape by performing one of bending and rolling;
- and
- (c) deforming the edge areas to a smaller outside diameter, the recesses being reduced to a minimal width to thereby define a magnet housing having a middle housing area adjoined on two opposite sides by attachment areas having a smaller outside diameter than the middle housing area.
Dependencies are inferred from the claim text.