Actuator for an adjustable damper-valve device

Patent metadata

Field	Value
Publication number	US-9267607-B2
Application number	US-201113991314-A
Country	US
Kind code	B2
Filing date	Oct 24, 2011
Priority date	Dec 1, 2010
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

An actuator for an adjustable damping valve device includes an armature which has an axial valve stem. At least one spring loads the armature in a direction opposite to the magnetic armature force generated by a magnetic coil. The position of the valve stem is adjustable with respect to a defined valve position of the damping valve device. The spring loading the armature is supported at a spring bearing which is accessible via a housing wall of the actuator and which can be adjusted with respect to its axial position.

First claim

The invention claimed is:

1. An actuator for an adjustable damping valve device comprising:
A housing ( 27 ) including a housing wall having an aperture;
an armature ( 19 );
an axial valve stem ( 17 ) extending through said aperture in said housing wall;
a spring bearing ( 35 ) and at least one spring ( 29 ) loading said armature ( 19 ) in a direction opposite to the magnetic armature force generated by a magnetic coil ( 13 ); the position of said valve stem ( 17 ) being adjustable with respect to a defined valve position of the damping valve device; and
wherein said spring ( 29 ) loading said armature ( 19 ) is supported at said spring bearing ( 35 ), said spring bearing being accessible via said housing wall of said actuator ( 11 ) and adjustable with respect to its axial position;
wherein said spring ( 29 ) is in contact with and supported at the housing wall in a preassembly position, wherein the housing wall is closing off a lower part of the housing so that the spring ( 29 ) and the armature ( 19 ) are enclosed by the housing; said spring having a diameter that is greater than the diameter of the aperture in the housing wall; and wherein, in an end assembly portion, the spring is lifted off the housing wall by inserting the spring bearing ( 35 ) through the aperture in the housing wall so as to load said armature ( 19 ) in the direction opposite to the magnetic armature force generated by the magnetic coil ( 13 ).

2. The actuator according to claim 1 , wherein said spring bearing ( 35 ) is formed by a sleeve guided in said housing wall.

3. The actuator according to claim 2 , wherein said sleeve is constructed as a clamping sleeve.

4. The actuator according to claim 1 , wherein said housing wall is formed by a cover.

5. The actuator according to claim 2 , wherein said sleeve has a length and said length of said sleeve is being greater than the wall thickness of said housing wall.

6. The actuator according to claim 1 , wherein said spring bearing ( 35 ) radially supports said valve stem ( 17 ).

Assignees

• Förster Andreas
• Zahnradfabrik Friedrichshafen

Inventors

• Förster Andreas

Classifications

• F16F9/464 Primary

  Control of valve bias or pre-stress, e.g. electromagnetically (F16F9/465 takes precedence) · CPC title

• Y10T137/7922

  Spring biased · CPC title

• Y10T137/7905

  Plural biasing means · CPC title

• F16K31/0655

  Lift valves · CPC title

• F16F2226/045

  Press-fitting · CPC title