REVERSIBLE BELT TENSIONER FOR VEHICLE OCCUPANT RESTRAINT SYSTEMS
First Claim
1. A reversible buckle tensioner comprisinga drive motor (12),a spindle (14) connected to the drive motor (12),a spindle nut (16) adapted to be displaced in axial direction (18) on the spindle (14),a catch (20) the one end of which is connected to the spindle nut (16)and a belt buckle (22) connected to the other end of the catch (20),wherein at least one of the following features preventing the spindle nut (16) from jamming upon traveling against block:
- a cylindrical guiding portion (50) inside the spindle nut (16) which interacts with the outer geometry of the spindle (14);
a freewheel mechanism (48) between the drive motor (12) and the spindle (14);
a compression spring (70) between the belt buckle (22) and a stop.
1 Assignment
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Accused Products
Abstract
The invention relates to a reversible belt tensioner (10) comprising a drive motor (12), a spindle (14) connected to the drive motor (12), a spindle nut (16) adapted to be displaced in axial direction (18) on the spindle (14), a catch (20) the one end of which is connected to the spindle nut (16) and a belt buckle (22) connected to the other end of the catch (20), wherein at least one of the following features prevents the spindle nut (16) from jamming during travel against block:
- a cylindrical guiding portion (50) inside the spindle nut (16) interacting with the outer geometry of the spindle (14);
- a freewheel mechanism (48) between the drive motor (12) and the spindle (14);
- a compression spring (70) between the belt buckle (22) and a stop.
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Citations
14 Claims
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1. A reversible buckle tensioner comprising
a drive motor (12), a spindle (14) connected to the drive motor (12), a spindle nut (16) adapted to be displaced in axial direction (18) on the spindle (14), a catch (20) the one end of which is connected to the spindle nut (16) and a belt buckle (22) connected to the other end of the catch (20), wherein at least one of the following features preventing the spindle nut (16) from jamming upon traveling against block: -
a cylindrical guiding portion (50) inside the spindle nut (16) which interacts with the outer geometry of the spindle (14); a freewheel mechanism (48) between the drive motor (12) and the spindle (14); a compression spring (70) between the belt buckle (22) and a stop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification