Oil channels, produced without cutting and provided in a split rotor for a hydraulic camshaft adjuster

Patent metadata

Field	Value
Publication number	US-2016305291-A1
Application number	US-201415101610-A
Country	US
Kind code	A1
Filing date	Oct 22, 2014
Priority date	Dec 18, 2013
Publication date	Oct 20, 2016
Grant date	—

Abstract

A multipart rotor ( 1 ) for a hydraulic camshaft adjuster ( 2 ) is provided, the multipart rotor having a rotor main body ( 3 ) which, together with a first rotor secondary body ( 4 ), forms hydraulic means-conducting channels ( 9 ) oriented in a radial direction, the first rotor secondary body ( 4 ) being arranged radially within the rotor main body ( 3 ).

First claim

What is claimed is:

1 - 10 . (canceled)

11 . A multipart rotor for a hydraulic camshaft adjuster, the rotor comprising:
a rotor main body, together with a first rotor secondary body, forming hydraulic medium-conducting channels oriented in the radial direction, the first rotor secondary body being situated radially within the rotor main body.

12 . The rotor as recited in claim 11 wherein the rotor main body has a shell design and forms a circumferential groove into which the first rotor secondary body, having a sleeve design, is inserted.

13 . The rotor as recited in claim 11 wherein the first rotor secondary body is made of sintered material.

14 . The rotor as recited in claim 11 wherein the first rotor secondary body includes connecting channels, the connecting channels in each case connecting a radially inner hydraulic medium-conducting pocket on the rotor main body to a working chamber inlet, with a specific hydraulic medium-conducting channel for hydraulic medium connected in between.

15 . The rotor as recited in claim 14 wherein the first rotor secondary body is designed as an oil-conducting sleeve in such a way that oil is conducted in one of the connecting channels, predominantly or at least in sections, in the axial direction.

16 . The rotor as recited in claim 15 wherein the connecting channels extend at different lengths from one front face of the oil-conducting sleeve to the other.

17 . The rotor as recited in claim 14 wherein a supply to the connecting channels is provided at different axial positions, but the discharge is provided at an axial height of the particular working chamber inlet connected there.

18 . The rotor as recited in claim 14 wherein all working chamber inlets are present in the same transverse plane, oriented perpendicularly with respect to the axial direction, and are produced without cutting.

19 . The rotor as recited in claim 11 wherein the rotor main body ( 3 ) is connected in an axially or rotatably fixed manner to the first rotor secondary body via at least one caulking or at least one pin.

20 . The rotor as recited in claim 11 further comprising a second rotor secondary body is concentrically and radially situated within the rotor main body and the first rotor secondary body.

21 . The rotor as recited in claim 11 wherein the second rotor secondary body is a support ring or bearing ring for a camshaft.

Assignees

• Schaeffler Technologies Ag

Inventors

• Weber Juergen

Classifications

• F01L1/3442 Primary

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

• F01L2303/00

  Manufacturing of components used in valve arrangements · CPC title

• F01L2001/34423

  Details relating to the hydraulic feeding circuit · CPC title