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US 10,344,633 B2Granted
Adjusting device, in particular for adjusting a camshaft of an internal combustion engine
AssigneeDaimler AG
InventorsAlexander Gaisberg-Helfenberg, Markus Lengfeld, Jens Meintschel, Thomas Stolk
Life of this patent
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Abstract
An adjusting device, in particular for adjustment of a camshaft of an internal combustion engine, is disclosed. The adjusting device includes a brake unit which has at least one brake disc and at least one electromagnet for actuating the brake unit. The electromagnet has a yoke and an armature formed separately from the brake disc, where the brake disc is disposed at least partially spatially between the yoke and the armature of the electromagnet.
Claims8
An adjusting device for adjustment of a camshaft of an internal combustion engine, comprising:
- a brake unit which has a rotary movable brake disc, wherein the rotary movable brake disc has a first friction surface on a first side of the rotary movable brake disc and a second friction surface on a second side of the rotary movable brake disc;
- and
- an electromagnet, wherein the brake unit can be actuated by the electromagnet;
- wherein the electromagnet is a pull magnet and has a yoke, a coil, and an armature formed separately from the brake disc, wherein the yoke is surrounded at least in a region by the coil, wherein the yoke is disposed immovably with respect to the coil and conducts a magnetic field of the coil, wherein the armature is a movably mounted magnetic conductor, and wherein the armature is pullable in a direction of the yoke by a force produced by the magnetic field of the coil;
- wherein the brake disc is disposed at least partially spatially between the yoke and the armature of the electromagnet;
- wherein the yoke has a first arm, a second arm, and a first curved portion that connects the first arm and the second arm and wherein the first and the second arms each have a third friction surface on a respective open end of the first and the second arms, wherein the third friction surface has a first brake lining;
- wherein the armature has a third arm, a fourth arm, and a second curved portion that connects the third arm and the fourth arm and wherein the third and the fourth arms each have a fourth friction surface on a respective open end of the third and the fourth arms, wherein the fourth friction surface has a second brake lining;
- wherein the respective friction surfaces of the first and the second arms of the yoke and the third and the fourth arms of the armature exert, in an activation state of the brake unit, a respective force on the brake disc and wherein the respective friction surfaces of the first and the second arms of the yoke are congruent with the respective friction surfaces of the third and the fourth arms of the armature.
5 more elements
A valve train device for an internal combustion engine, comprising:
- a camshaft;
- and
- an adjusting device, wherein the camshaft is adjustable by the adjusting device and wherein the adjusting device comprises:
- a brake unit which has a rotary movable brake disc, wherein the rotary movable brake disc has a first friction surface on a first side of the rotary movable brake disc and a second friction surface on a second side of the rotary movable brake disc;
- and
- an electromagnet, wherein the brake unit can be actuated by the electromagnet;
- wherein the electromagnet is a pull magnet and has a yoke, a coil, and an armature formed separately from the brake disc, wherein the yoke is surrounded at least in a region by the coil, wherein the yoke is disposed immovably with respect to the coil and conducts a magnetic field of the coil, wherein the armature is a movably mounted magnetic conductor, and wherein the armature is pullable in a direction of the yoke by a force produced by the magnetic field of the coil;
- wherein the brake disc is disposed at least partially spatially between the yoke and the armature of the electromagnet;
- wherein the yoke has a first arm, a second arm, and a first curved portion that connects the first arm and the second arm and wherein the first and the second arms each have a third friction surface on a respective open end of the first and the second arms, wherein the third friction surface has a first brake lining;
- wherein the armature has a third arm, a fourth arm, and a second curved portion that connects the third arm and the fourth arm and wherein the third and the fourth arms each have a fourth friction surface on a respective open end of the third and the fourth arms, wherein the fourth friction surface has a second brake lining;
- wherein the respective friction surfaces of the first and the second arms of the yoke and the third and the fourth arms of the armature exert, in an activation state of the brake unit, a respective force on the brake disc and wherein the respective friction surfaces of the first and the second arms of the yoke are congruent with the respective friction surfaces of the third and the fourth arms of the armature.
8 more elements
Dependencies are inferred from the claim text.