Normally closed solenoid valve

US10520106B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Pascal Godbillon · Heilbronn, DE
• Massimiliano Ambrosi · Erbach, DE
• Michael Eisenlauer · Marbach am Neckar, DE
• Edgar Kurz · Haigern, DE
• Norbert Alaze · Markgröningen, DE

Key dates

• Filing date: May 30, 2016
• Grant date: Dec 31, 2019
• Expiry date: Aug 6, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F2007/1661
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A normally closed solenoid valve includes a valve sleeve, a pole core fixedly positioned in the sleeve, an axially displaceable armature, a spring, a closing element, a valve seat, and an elastic component. The spring acts between the pole core and the armature in order to push the closing element into the valve seat. The closing element interacts with the armature. A prestressing force of the spring causes a deformation of the elastic component, which is positioned between the armature and the pole core, such that an impact of the armature on the pole core is damped via a regression of the deformation of the elastic component.