# US 2013/0152890 A1 · Camshaft adjuster arrangement and camshaft adjuster

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- Number: US 2013/0152890 A1
- Document ID: US20130152890A1
- Status: Published application
- Kind: A1
- Application number: 13/817,910
- Filed: 2011-06-15
- Published: 2013-06-20
- Earliest claimed: 2010-08-24
- Assignees: Schaeffler Technologies AG & Co. KG
- Inventors: Werner Wagner
- Web page: https://patentgrep.com/patent/US20130152890A1

## CPC

- F01L 1/356: making the angular relationship oscillate {, e.g. non-homokinetic drive}
- F01L 1/3442: {using hydraulic chambers with variable volume to transmit the rotating force}
- F01L 1/46: Component parts, details, or accessories, not provided for in preceding subgroups
- F01L 2303/00: Manufacturing of components used in valve arrangements
- Y10T 403/7056: Threaded actuator
- F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A camshaft adjuster arrangement (2) having a camshaft (4) and a rotor (6) for a camshaft adjuster. The rotor (6) has a central bore (8) for a fixing element (14), the rotor being mounted on the camshaft (4) in a rotationally fixed manner by the fixing element (14). The mounting of the camshaft adjuster arrangement (2) is simplified by forming a frictional connection between the camshaft (4) and the rotor (6) using a clamping unit (16).

## Claims

### Claim 1

A camshaft adjuster arrangement comprising a camshaft and a rotor for a camshaft adjuster which is mounted fixedly, via a fastening element in a central bore, on the camshaft so as to rotate therewith, and a frictional connection being formed between the camshaft and the rotor by a clamping unit.

### Claim 2 (depends on 1)

The camshaft adjuster arrangement as claimed in claim 1, wherein the clamping unit is a two-piece clamping unit comprising an inner taper ring and an outer taper ring.

### Claim 3 (depends on 2)

The camshaft adjuster arrangement as claimed in claim 2, wherein the taper rings are clamped on the rotor via the fastening element.

### Claim 4 (depends on 3)

The camshaft adjuster arrangement as claimed in claim 3, wherein a circular receptacle for the clamping unit is formed on a side of the rotor which faces the camshaft and said circular receptacle is a radial enlargement of the central bore.

### Claim 5 (depends on 4)

The camshaft adjuster arrangement as claimed in claim 4, wherein a diameter (DR) of the receptacle has an oversize with respect to an outer diameter (DA) of the outer taper ring, and an inner diameter (DI) of the inner taper ring has an oversize with respect to a diameter (DN) of the camshaft.

### Claim 6

A camshaft adjuster comprising a rotor and a stator which are arranged coaxially and can be moved relative to one another, the rotor having a central bore for a fastening element for fastening the rotor to a camshaft, and a circular receptacle for a clamping unit formed on a front side of the rotor, said circular receptacle is a radial enlargement of the central bore.

### Claim 7 (depends on 6)

The camshaft adjuster as claimed in claim 6, further comprising a clamping unit with an outer taper ring and an inner taper ring, a diameter (DR) of the receptacle having an oversize with respect to an outer diameter (DA) of the outer taper ring.

### Claim 8 (depends on 7)

The camshaft adjuster as claimed in claim 7, wherein the fastening element is a central screw for screwing the rotor to a camshaft, with the clamping unit being clamped via the fastening element.