Safety belt retractor with a switched liquid damper
2 Assignments
0 Petitions
Accused Products
Abstract
A safety belt retractor, especially in vehicles, is provided that includes a belt shaft as a carrier for a belt that is wound thereon and a vehicle sensitive and/or belt sensitive controllable block device for the belt shaft. The block device includes a force limiting device, effective in the event of a block event, the force limiting device having a viscous medium-filled housing with at least one fixedly positioned contour and a counter-contour that is rotatably displaceable in response to a block event, so that the relative movement between the contour and the counter-contour forces the viscous medium between the surfaces arranged for this purpose. The level of the force limitation applied by the force limitation device is adjustably settable as a function of the parameters associated with the buckled-in passengers via a variation of the inner pressure in the viscous medium-filled housing.
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Citations
20 Claims
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1-12. -12. (canceled)
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13. A safety belt roller, especially in vehicles, comprising:
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a belt shaft as a carrier for a belt that is wound thereon; and
a vehicle sensitive and/or belt sensitive controllable block device for the belt shaft, the block device including a force limiting device, effective in the event of a block event, the force limiting device having a viscous medium-filled housing with at least one fixedly positioned contour and a counter-contour that is rotatably displaceable in response to a block event, so that the relative movement between the contour and the counter-contour effects trituration of the viscous medium located between the surfaces arranged for this purpose, and the level of the force limitation applied by the force limitation device being adjustably settable as a function of the parameters associated with the passengers buckled in by the safety belt unwound from the belt shaft via a variation of the inner pressure in the viscous medium-filled housing.
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16. A safety belt roller, especially in vehicles, comprising:
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a belt shaft as a carrier for a belt that is wound thereon; and
a force limiting device, effective in the event of a block event, the force limiting device including a viscous medium-filled housing with a plurality of fixedly positioned disks and a plurality of ring pistons arranged between the disks and connected to the belt shaft for rotation therewith, so that relative movement between the disks and the ring pistons effects trituration of the viscous medium located between the surfaces arranged for this purpose, the level of the force limitation applied by the force limitation device being adjustably settable as a function of the parameters associated with the passengers buckled in by the safety belt unwound from the belt shaft via a variable activation and de-activation of the ring pistons on the belt shaft by means of a switch device operationally disposed between the belt shaft and the ring pistons.
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17. A safety belt retractor, especially in vehicles, comprising:
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a belt shaft as a carrier for a belt that is wound thereon; and
a vehicle sensitive and/or belt sensitive controllable block device for the belt shaft, the block device including a force limiting device, effective in the event of a block event, the force limiting device having a viscous medium-filled housing with at least one fixedly positioned contour and a counter-contour that is rotatably displaceable in response to a block event, so that the relative movement between the contour and the counter-contour effects trituration of the viscous medium located between the surfaces arranged for this purpose, and the level of the force limitation applied by the force limitation device being adjustably settable as a function of the parameters associated with the passengers buckled in by the safety belt unwound from the belt shaft via a variation of the inner pressure in the viscous medium-filled housing.
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20. A safety belt retractor, especially in vehicles, comprising:
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a belt shaft as a carrier for a belt that is wound thereon; and
a force limiting device, effective in the event of a block event, the force limiting device including a viscous medium-filled housing with a plurality of fixedly positioned disks and a plurality of ring pistons arranged between the disks and connected to the belt shaft for rotation therewith, so that relative movement between the disks and the ring pistons effects trituration of the viscous medium located between the surfaces arranged for this purpose, the level of the force limitation applied by the force limitation device being adjustably settable as a function of the parameters associated with the passengers buckled in by the safety belt unwound from the belt shaft via a variable activation and de-activation of the ring pistons on the belt shaft by means of a switch device operationally disposed between the belt shaft and the ring pistons.
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Specification