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Belt buckle pretensioner

A tensioner and safety belt technology, which is applied in the direction of seat belts, belt tighteners, and energy-absorbing devices in vehicles, can solve problems such as large structural space, and achieve the effect of reducing costs and costs and good efficiency

Inactive Publication Date: 2004-06-02
TAKATA PETRI ULM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rotary actuator, the pyrotechnic drive unit and the stop still require a lot of construction space

Method used

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  • Belt buckle pretensioner
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  • Belt buckle pretensioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] figure 1 Schematic representation of a seat belt device with a first improved buckle tensioner according to the present invention. The seat belt arrangement comprises a buckle 1 for securing a seat belt 2 relative to a vehicle chassis 30 . The buckle tensioner comprises a winding device 10 fixed to the vehicle chassis and having a shaft 11 for winding a (steel) pull-in cable 12 whose One end is fixed on the rotating shaft 11, and the other end is fixed on the vehicle chassis 30 or the bracket of the buckle tensioner. Between the two ends, the pull-in cable 12 passes over a deflection pulley 13 on the buckle 1 . The diverting pulley 13 is contained within the housing of the buckle 1 .

[0026] figure 1 Indicates that the buckle tensioner is not working. In the event of an accident, the shaft 11 rotates so that the pull-in cable 12 is wound up and the buckle 1 is moved towards the fixed point of the pull-in cable 12 on the vehicle chassis 30 . According to this desi...

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PUM

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Abstract

A belt-buckle tightener for a seat belt system in a vehicle, having: a rotatable spindle which is connected to a belt buckle via a draw-in cable; and a drive for rotation of the spindle, as a result of which the draw-in cable is rolled up on the spindle and the belt buckle is moved in the tightening direction, and the drive being integrated in the spindle. Integration of the drive in the spindle reduces the structural space required. In addition, the number of individual parts which are required is reduced since, inter alia, a separate driving spindle is not required. Rather, the spindle for winding up the draw-in cable at the same time forms the driving spindle.

Description

technical field [0001] The present invention relates to a buckle tensioner for a seat belt system in a vehicle. Background technique [0002] A buckle tensioner is for example disclosed in EP-A1-0662408 (herein incorporated by reference). The function of such a buckle tensioner is to tension the safety belt when an accident occurs according to the movement of a piston connected to the buckle by a draw-in cable by pyrotechnic charge. [0003] A disadvantage of such buckle tensioners is the installation space required for the pyrotechnically driven piston. [0004] DE-A1-4319955 (incorporated herein by reference) discloses a buckle tensioner in which a rotary actuator is used instead of a pyrotechnic driven piston. The rotary actuator is actuated by a pyrotechnic driving unit. In addition, a stop in the form of a toothed rack is provided for preventing movement of the buckle against the tensioning direction. In any case, a rotary actuator of such a buckle tensioner require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R22/195B60R22/28B60R22/46
CPCB60R22/1952B60R22/4676B60R22/1954B60R22/1951B60R2022/287
Inventor 乌尔里希·瓦伦塔
Owner TAKATA PETRI ULM