Patent ID: 8091821
Filing Date: 2012-01-10
Classification: B60R

Abstract:
1. A method for controlling an electric belt retractor, the belt retractor having an electric motor, which can drive a belt spool in a belt band retraction direction and/or in a belt band withdrawal direction, and a blocking catch which is able to be guided into blocking teeth in order to block a rotation of the belt spool in the belt band withdrawal direction, the method comprising the following steps: (i) Operating the electric motor in the belt band retraction direction to tension a belt band; (ii) Detecting a possible belt band withdrawal following the tensioning of the belt band; (iii) Determining a stable vehicle state; and (iv) Performing an unlocking operation of the electric motor in order to release a blocking catch only when a belt band withdrawal is detected after the tensioning of the belt band, the step of performing the unlocking operation including re-operating the electric motor in the belt band retraction direction.