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Load-limiting seatbelt retractor

  • US 10,421,429 B2
  • Filed: 08/17/2017
  • Issued: 09/24/2019
  • Est. Priority Date: 08/17/2017
  • Status: Active Grant
First Claim
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1. A seatbelt retractor comprising:

  • a housing;

    a spool rotatably supported by the housing;

    a torsion bar having a first end and a second end, the first end being fixed to the spool, and the second end being fixable relative to the housing;

    a plurality of magnets spaced from each other circumferentially about the torsion bar;

    a rotor disposed adjacent the magnets, one of the magnets and the rotor being fixed relative to the spool and the other of the magnets and the rotor being rotatable relative to the spool, the rotor including a conductive material;

    wherein the rotor extends around the magnets about the torsion bar; and

    a plate including a plurality of notches spaced from each other circumferentially about the torsion bar, one magnet disposed in each notch.

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