Sliding cam actuator having a seal

Patent metadata

Field	Value
Publication number	US-9752469-B2
Application number	US-201414765499-A
Country	US
Kind code	B2
Filing date	Jan 21, 2014
Priority date	Feb 8, 2013
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

A sliding cam actuator for a sliding cam system, including a housing defining a housing interior, and at least one coil former having a winding for generating a magnetic force when current flows, further including a moving pin or control pin extendable out of the housing by the magnetic force or a spring force and designed to dip into a displacement groove of a sliding can. A sealing element sealing off the interior of the housing from the outside is arranged between a component fixed to the housing and a component fixed to the moving pin. A sliding cam system including at least one camshaft, on which at least one sliding cam having a displacement groove is arranged such that the sliding cam can be displaced but is fixed against rotation, and into which sliding cam a moving pin of a sliding cam engages is provided.

First claim

What is claimed is:

1. A sliding cam actuator for a sliding cam system, the sliding cam actuator comprising:
a housing defining a housing interior;
at least one coil body situated in the housing interior and including a winding for generating a magnetic force when current flows through the winding;
at least one moving pin or contact pin extendable out of the housing by the magnetic force or a spring force, the moving pin or contact pin for dipping into a sliding groove of a sliding cam; and
a seal sealing the housing interior from the outside and situated between a component fixed to the housing and a component fixed to the moving pin or contact pin, wherein the seal is a bellows.

2. The sliding cam actuator as recited in claim 1 wherein the bellows is made of or includes rubber or metal.

3. The sliding cam actuator as recited in claim 1 wherein the bellows is an expandable bellows fixedly mounted on the component fixed to the housing as well as the component fixed to the moving or contact pin, and sealing a gap situated between the component fixed to the housing as well as the component fixed to the moving or contact pin.

4. The sliding cam actuator as recited in claim 1 wherein the component fixed to the housing is the housing or an armature guide, the component fixed to the moving or contact pin being the moving or contact pin or an armature.

5. The sliding cam actuator as recited in claim 4 wherein the armature or the armature guide is fixedly connected to the moving or contact pin or is an integral part thereof.

6. A sliding cam system comprising:
at least one camshaft; and
at least one sliding cam situated dispaceably but rotatably fixed on the camshaft and having a sliding groove, the moving or contact pin of the sliding cam actuator as recited in claim 1 engaging into the sliding groove.

Assignees

• Schaeffler Technologies Ag

Inventors

• Steigerwald Martin
• Hoppe Jens

Classifications

• F01L13/0036

  the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction · CPC title

• F01L2001/0473

  Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod · CPC title

• H01F7/128

  Encapsulating, encasing or sealing · CPC title

• F01L2820/031

  Electromagnets · CPC title

• F01L1/047

  Camshafts · CPC title