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Pre-tensioner for seat belt of vehicles

  • US 10,259,425 B2
  • Filed: 07/27/2017
  • Issued: 04/16/2019
  • Est. Priority Date: 04/04/2017
  • Status: Active Grant
First Claim
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1. A pre-tensioner for a safety belt that is disposed in a side sill of a vehicle and that operates to pull the safety belt by pushing a piston into a tube by a high pressure gas of a gas generator using explosive power of gunpowder that is configured at one side of a bracket in a state in which the piston is connected to the safety belt through a wire within the tube, the pre-tensioner comprising:

  • internal and external weldnuts that are fixed to each one side of internal and external side surfaces of the side sill,wherein by penetrating the side sill in a vehicle width direction by forming a screw at an external circumference of first and second end portions of the tube, the first and second end portions are engaged with the internal and external weldnuts, respectively.

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