Patent ID: 7455322
Filing Date: 2008-11-25
Classification: B60R

Abstract:
1. A buffer device used in a motor vehicle and connected to a seat belt in said motor vehicle for buffering said seat belt upon an impact force, the buffer device comprising: a housing mounted therein with at least one rack having a first end and a second end; a roller assembly having a roller with at least one engagement portion meshed with said at least one rack for guiding rotation of said roller along said at least one rack; a traction cord member having an end connected to said roller, said traction cord member is pullable by movement of the seat belt such that when said seat belt is stretched to pull the traction cord member upon an impact force, said roller is forced to rotate along said at least one rack toward the first end of said at least one rack to roll up said traction cord member thereon; and a spring member connected between said housing and said roller assembly for pulling said roller assembly toward the second end of said at least one rack.