Vehicle seat belt system
First Claim
1. A vehicle seat belt system comprising a reversible belt tensioner (12) adapted to apply a belt tightening force (F) on one or more predetermined levels to a belt strap (14) of a seat belt,a control unit (16) for controlling the belt tensioner (12) anda device (18) for detecting the course of a road (S1, S2) ahead of the vehicle and for identifying bends lying ahead of the vehicle,wherein the control unit (16) causes the belt tightening force (F) to be increased from a first tightening force for a first bend to a second tightening force for a second bend, the second tightening force being greater than the first tightening force, when in the course of the road the second bend follows the first bend within a predetermined distance.
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Accused Products
Abstract
A vehicle seat belt system includes a reversible belt tensioner (12) adapted to apply a belt tightening force (F) on several predetermined levels to a belt strap (14) of a seat belt, a control unit (16) for controlling the belt tensioner (12) and a device (18) for detecting the course of a road (S1, S2) ahead of the vehicle and for identifying bends lying ahead of the vehicle. The control unit (16) causes the belt tightening force (F) to be kept on an increased level when in the course of the road a further bend follows a just taken bend within a predetermined distance.
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Citations
12 Claims
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1. A vehicle seat belt system comprising a reversible belt tensioner (12) adapted to apply a belt tightening force (F) on one or more predetermined levels to a belt strap (14) of a seat belt,
a control unit (16) for controlling the belt tensioner (12) and a device (18) for detecting the course of a road (S1, S2) ahead of the vehicle and for identifying bends lying ahead of the vehicle, wherein the control unit (16) causes the belt tightening force (F) to be increased from a first tightening force for a first bend to a second tightening force for a second bend, the second tightening force being greater than the first tightening force, when in the course of the road the second bend follows the first bend within a predetermined distance.
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10. A vehicle seat belt system comprising a reversible belt tensioner (12) adapted to apply a belt tightening force (F) on one or more predetermined levels to a belt strap (14) of a seat belt,
a control unit (16) for controlling the belt tensioner (12) and a device (18) for detecting the course of a road (S1, S2) ahead of the vehicle and for identifying bends lying ahead of the vehicle, wherein the control unit (16) causes the belt tightening force (F) to be increased when in the course of the road a further bend follows a just taken bend within a predetermined distance, the belt tightening force (F) being applied by the belt tensioner (12) continuously varies.
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11. A vehicle seat belt system comprising a reversible belt tensioner (12) adapted to apply a belt tightening force (F) on one or more predetermined levels to a belt strap (14) of a seat belt comprising:
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a device (18) for detecting the course of a road (S1, S2) ahead of the vehicle and for identifying first and second bends in the road lying ahead of the vehicle; and a control unit (16) for determining the distance between the first and second bends lying ahead of the vehicle and increasing the belt tightening force (F) on the belt strap (14) in response to the first and second bends being within a predetermined distance from one another, the control unit (16) determining the increase of the belt tightening force (F) for the first and second bends before the vehicle takes the first bend. - View Dependent Claims (12)
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Specification