Belt roll-up mechanism for a safety belt in a vehicle
AssigneeDaimler-Benz Aktiengesellschaft
InventorWinfried Schreiber
Life of this patent
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Abstract
A belt roll-up mechanism for a safety belt in a motor vehicle, in which the pull-out force required to overcome the force produced by the pull-back device is controlled over the entire pull-out range of the safety belt by at least one shifting member so as to have an essentially constant value or a value decreasing with an increased pull-out length, which value in the maximum case corresponds to the pull-back force effective at the end of a roll-up operation.
Claims12
A belt roll-up mechanism for a safety belt means in a vehicle, comprising a pull-back means effective at least during the driving operation for acting upon the safety belt means and shifting means for controlling the value of the pull-out force developed by the pull-back means, said shifting means including two axially parallel disposed cam wheels in slip-free engagement with each other, each cam wheel having an effective lever arm, said shifting means varying the effective lever arms of said cam wheels over the entire pulled-out range of the safety belt means for controlling the pull-out force.
Dependencies are inferred from the claim text.