Seat back for a vehicle seat comprising an integrated protective device
First Claim
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1. A seatback for a vehicle seat, the seatback having an integrated protective device, comprising:
- a lower back part adapted to be joined to a seat part;
an upper back part that is pivotable relative to the lower back part out of a normal use position, about an axis extending in the seatback transversely to a longitudinal vehicle axis, through an angular range in a pivoting direction pointing in a direction of vehicle travel, as a result of a torque acting in the pivoting direction, into a safety position;
a device for generating the torque;
means for detecting a rear-end impact; and
immobilization means for retention of the upper back part in the normal use position;
wherein the device for generating the torque comprises a force storage device or an energy storage device acting irrespective of any occupancy of the vehicle seat, the means for detecting a rear-end impact comprising a vehicle crash sensor and the immobilization means comprising a lever system, the vehicle crash sensor being in effective connection with the force storage device or the energy storage device, and with the lever system constituting the immobilization means for retention of the upper back part, such that in the event of the rear-end impact, the retention of the upper back part in the normal use position is nullified, the force storage device or the energy storage device is activated, and the upper back part is pivoted in the pivoting direction.
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Abstract
The invention concerns a seatback for a vehicle seat, having an integrated protective device. The protective device includes a device that generates a torque acting in a pivoting direction on an upper back part, a rear-end impact detector that is-in effective connection with the torque-generating device in such a way that the device is activated in the event of the rear-end impact and the pivoting motion is initiated, and an immobilization device for retention of the upper back part in the normal use position.
60 Citations
13 Claims
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1. A seatback for a vehicle seat, the seatback having an integrated protective device, comprising:
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a lower back part adapted to be joined to a seat part;
an upper back part that is pivotable relative to the lower back part out of a normal use position, about an axis extending in the seatback transversely to a longitudinal vehicle axis, through an angular range in a pivoting direction pointing in a direction of vehicle travel, as a result of a torque acting in the pivoting direction, into a safety position;
a device for generating the torque;
means for detecting a rear-end impact; and
immobilization means for retention of the upper back part in the normal use position;
wherein the device for generating the torque comprises a force storage device or an energy storage device acting irrespective of any occupancy of the vehicle seat, the means for detecting a rear-end impact comprising a vehicle crash sensor and the immobilization means comprising a lever system, the vehicle crash sensor being in effective connection with the force storage device or the energy storage device, and with the lever system constituting the immobilization means for retention of the upper back part, such that in the event of the rear-end impact, the retention of the upper back part in the normal use position is nullified, the force storage device or the energy storage device is activated, and the upper back part is pivoted in the pivoting direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification