Valve cartridge for a solenoid valve
AssigneeRobert Bosch GmbH
InventorDietmar Kratzer
Life of this patent
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Abstract
The invention relates to a valve cartridge (1′) for a solenoid valve having a capsule (4′), having a valve insert (32) which is pushed into the capsule (4′) and having a plunger (33) which is guided in a movable fashion in an inner passage (32.1) of the valve insert (32), wherein at least one axially running volume-compensating groove (35) is arranged between the inner passage (32.1) of the valve insert (32) and a plunger casing (33.1). According to the invention, the plunger (33) is designed such that the plunger casing (33.1) has a simple geometric shape and the valve insert (32) is designed such that the at least one axially running volume-compensating groove (35) is formed into the valve insert (12, 22, 32) and is defined by the shape of the inner passage (32.1) of the valve insert (32).
Claims20
A valve cartridge for a solenoid valve, comprising:
- a capsule;
- a valve insert inserted into the capsule;
- said valve insert comprising a curled sheet-metal strip having abutting ends defining a cylinder with an inner passage;
- a tappet defining a tappet casing guided movably in said inner passage of the valve insert, in which
- at least one axially extending volumetric-compensation groove is disposed between the inner passage of the valve insert and said tappet casing,
- the tappet being embodied such that the tappet casing has a simple geometric shape, and
- the valve insert further comprising said at least one axially extending volumetric-compensation groove extending along a corresponding surface of said sheet-metal strip defining said inner passage.
Dependencies are inferred from the claim text.