Method for controlling an electric belt retractor, and an electric belt retractor
First Claim
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.
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Accused Products
Abstract
A method for controlling an electric belt retractor (16) which has an electric motor (20) which can drive a belt spool (18) 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 (18) in the belt band withdrawal direction, comprises the following steps:
- Operating the electric motor (20) in belt band retraction direction for tensioning the belt band (26);
- Detecting a possible belt band withdrawal;
- Determining a stable vehicle state; and
- Re-operating the electric motor (20) in belt band retraction direction only when a belt band withdrawal is detected.
14 Citations
13 Claims
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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:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification