Patent ID: 9638306
Date: 2017-05-02
CPC Classifications: F01L,F16H,Y10T

Claim:
1. A camshaft unit, comprising: a first camshaft, a second camshaft that is arranged concentric to the first camshaft, a camshaft adjuster with which the first and second camshafts are phase-adjustable, the camshaft adjuster has a connecting element that moves in an axial direction of the camshafts and comprises a first toothed section and a second toothed section, the first toothed section meshes with a first counter toothed section on the first camshaft and the second toothed section meshes with a second counter toothed section on the second camshaft, and the first toothed section and the second toothed section of the connecting element are constructed as helical toothed sections, wherein the camshaft unit has an adjustment drive with a ball screw drive including a spindle that drives a threaded nut directly mounted on the connecting element, the connecting element is formed as a sleeve, and the threaded nut is arranged in a sleeve interior of the sleeve and secured in the axial direction.