Patent ID: 7578274

Claim:
A camshaft adjuster for an internal combustion engine comprising a locking unit, which, in a locked operating position, fixes an adjustment angle of the camshaft adjuster, such that a locking element creates, at least in one adjustment direction, a positive-fit connection between a driving element, which is in driven connection with a crankshaft of the internal combustion engine, and a driven element, which is in driving connection with a camshaft of the internal combustion engine, at least one of the driving element or the driven element is formed with a plastic part and has an insert located in a comulementary opening therein, which contacts the locking element in the locked operating position at least in one adjustment direction, the insert has an outer surface that transmits a locking force to a surrounding area of the plastic part, and the insert has an enlarged extent in a circumferential direction from a contact point of the locking element in a direction of the locking force.