Device for adjusting the position of a strap return element of in particular a safety belt for a motor vehicle
First Claim
1. A device for adjusting the vertical position of a strap return element, of in particular a safety belt for a motor vehicle, said device comprising said return element mounted to be movable between two end positions, an electric motor having a stator and a rotor, a control element, a source of current, means for connecting the source of current to the motor through the medium of the control element, an anchoring pin mounted on the stator of the motor, said return element being mounted on said anchoring pin, means for mounting on the vehicle for guiding and retaining the electric motor so that the electric motor is movable between said two end positions, said guiding and retaining means comprising a metal plate having bent edge portions and projecting portions on the stator which are cooperative with the edge portions of the plate, the rotor of the electric motor being hollow and carrying an internal screwthread, and screwthreaded rod for fixing to the vehicle and screwthreadedly engaged with the internal screwthread of the rotor for ensuring the axial displacement of the stator of the motor, and therefore of the strap return element, when the motor is supplied with current;
- wherein said means for connecting the source of current to the electric motor comprise brushes mounted on the stator and cooperative with said control element; and
wherein the control element comprises a slide and conductive tracks mounted on the slide, the conductive tracks being cooperative with the brushes for supplying current to the electric motor.
1 Assignment
0 Petitions
Accused Products
Abstract
The device for adjusting the position of a strap return element (1) of in particular a safety belt for a motor vehicle is characterized in that the strap return element is mounted to be movable between two end positions by driving means comprising an electric motor supplied with current through the medium of a control element controlling the position of the strap return element at any point of the travel of the latter defined by the two end positions. The strap return element (1) is disposed on an anchoring pin (4) mounted on the stator of the electric motor whose hollow rotor is provided with an internal screwthread cooperating with a screwthreaded rod mounted on the vehicle for shifting the electric motor and therefore the strap return element.
22 Citations
9 Claims
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1. A device for adjusting the vertical position of a strap return element, of in particular a safety belt for a motor vehicle, said device comprising said return element mounted to be movable between two end positions, an electric motor having a stator and a rotor, a control element, a source of current, means for connecting the source of current to the motor through the medium of the control element, an anchoring pin mounted on the stator of the motor, said return element being mounted on said anchoring pin, means for mounting on the vehicle for guiding and retaining the electric motor so that the electric motor is movable between said two end positions, said guiding and retaining means comprising a metal plate having bent edge portions and projecting portions on the stator which are cooperative with the edge portions of the plate, the rotor of the electric motor being hollow and carrying an internal screwthread, and screwthreaded rod for fixing to the vehicle and screwthreadedly engaged with the internal screwthread of the rotor for ensuring the axial displacement of the stator of the motor, and therefore of the strap return element, when the motor is supplied with current;
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wherein said means for connecting the source of current to the electric motor comprise brushes mounted on the stator and cooperative with said control element; and wherein the control element comprises a slide and conductive tracks mounted on the slide, the conductive tracks being cooperative with the brushes for supplying current to the electric motor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for adjusting the vertical position of a strap return element, of in particular a safety belt for a motor vehicle, said device comprising said return element mounted to be movable between two end positions, an electric motor having a stator and a rotor, a control element, a source of current, means for connecting the source of current to the motor through the medium of the control element, an anchoring pin mounted on the stator of the motor, said return element being mounted on said anchoring pin, means for mounting on the vehicle for guiding and retaining the electric motor so that the electric motor is movable between said two end positions, said guiding and retaining means comprising a metal plate having bent edge portions and projecting portions on the stator which are cooperative with the edge portions of the plate, the rotor of the electric motor being hollow and carrying an internal screwthread, a screwthreaded rod for fixing to the vehicle and screwthreadedly engaged with the internal screwthread of the rotor for ensuring the axial displacement of the stator of the motor, and therefore of the strap return element, when the motor is supplied with current;
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wherein said means for connecting the source of current to the electric motor comprise brushes mounted on the stator of the motor and fixed conductive tracks connected to the source of current through said control element, said brushes being cooperative with the conductive tracks; and wherein the control element comprises an inverting switch having three positions permitting the connection of said conductive tracks to the source of current in such manner as to cause the electric motor, and therefore the strap return element mounted thereon, to selectively move in one direction and the other toward the desired position, and the cut off of said supply of the current when this desired position is reached. - View Dependent Claims (9)
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Specification