Anti-twist protection for the inner part of a split rotor for a hydraulic camshaft adjuster

Patent metadata

Field	Value
Publication number	US-9840945-B2
Application number	US-201415101643-A
Country	US
Kind code	B2
Filing date	Oct 22, 2014
Priority date	Dec 18, 2013
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

A multi-part rotor ( 1 ) for a hydraulic camshaft adjuster, including two partial rotor members ( 2 ) which rest against each other along a separation plane ( 3 ) extending perpendicular to the axial direction and which jointly define hydraulic medium ducts ( 4 ) extending within said separation plane ( 3 ) and, including an additional rotor member ( 5 ) that conducts hydraulic medium from opposite axial directions in a targeted manner to different hydraulic medium ducts ( 4 ). The additional rotor member ( 5 ) or at least one positively engaging anti-twist element ( 6 ) is secured to one or both partial rotor members ( 2 ) for conjoint rotation therewith.

First claim

What is claimed is:

1. A multipart rotor for a hydraulic camshaft adjuster, the rotor comprising:
two rotor partial bodies resting against one another on a separating plane oriented perpendicularly with respect to the axial direction, and the two rotor partial bodies together defining hydraulic medium-conducting channels extending in the separating plane; and
a rotor additional body conducting hydraulic medium in a targeted manner from opposite axial directions to different ones of the hydraulic medium-conducting channels;
the rotor additional body or at least one anti-twist element acting in a form-fit manner being secured in a rotatably fixed manner to one or both rotor partial bodies.

2. The rotor as recited in claim 1 further comprising the anti-twist element, the anti-twist element being designed as an integral projection or recess at an outer circumferential surface of the rotor additional body cooperating in a form-fit manner with an anti-twist counterelement of one or both rotor partial bodies having a corresponding geometric design.

3. The rotor as recited in claim 1 wherein the rotor additional body has, or the two rotor partial bodies have, a ring-like design.

4. The rotor as recited in claim 1 wherein the two rotor partial bodies are fitted together congruently in the axial direction, and the rotor additional body is situated concentrically and radially within the two rotor partial bodies.

5. The rotor as recited in claim 1 wherein the rotor additional body includes oil-conducting pockets at an outer circumference, the pockets having a design open in alternation over the outer circumference, facing in different axial directions.

6. The rotor as recited in claim 1 wherein one of the rotor partial bodies includes at least one oil-conducting counterpocket, in the form of a depression, the counterpocket being at an inner circumferential surface and leading to a hydraulic medium-conducting channel.

7. The rotor as recited in claim 6 wherein both rotor partial bodies include one of the at least one oil-conducting counterpocket oriented in different or opposite axial directions away from the hydraulic medium-conducting channel.

8. The rotor as recited in claim 6 wherein the oil-conducting counterpocket extends beyond an axial edge of the rotor additional body.

9. The rotor as recited in claim 6 wherein the oil-conducting counterpocket extends by approximately 10% to 100% or more of the distance from an edge of a hydraulic medium-conducting channel remote from the separating plane to a front edge of the rotor additional body present on this side of the separating plane, in the direction of the front side of one of the rotor partial bodies present on this side of the separating plane.

10. The rotor as recited in claim 6 wherein the oil-conducting counterpocket extends to a front side of the rotor partial body remote from the separating plane, the oil-conducting counterpocket being formed at the separating plane.

Assignees

• Schaeffler Technologies Ag

Inventors

• Weber Juergen
• Boesel Christian

Classifications

• F01L2001/34423

  Details relating to the hydraulic feeding circuit · CPC title

• F01L1/3442 Primary

  using hydraulic chambers with variable volume to transmit the rotating force · CPC title

• F01L1/344 Primary

  changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear · CPC title

• F01L2303/00

  Manufacturing of components used in valve arrangements · CPC title

• F01L2103/00

  Mechanical Engineering · mapped topic