Patent ID: 7887096
Filing Date: 2011-02-15
Classification: B60R

Abstract:
1. A pretensioner for restraining an occupant wearing a seat belt by withdrawing a seat belt buckle upon occurrence of an impact on a vehicle, comprising: a wire, wherein one end portion of the wire is connected to the seat belt buckle; a piston, connected to the other end portion of the wire, for withdrawing the wire; a cylinder slidably accommodating the piston; a gas generator supplying gas into the cylinder, the gas configured to actuate the piston; a guiding member, having a bent passage portion, that bends the wire toward the direction of the cylinder; and a pin, located in the bent passage portion at an outside of the wire, wherein the pin is configured to ensure that an intermediate portion of the wire maintains contact with the guiding member, wherein, on an inner wall surface of the bent passage portion of the guiding member, convex portions are formed in a direction orthogonal to the sliding direction of the wire, the convex portions preventing the wire from being pushed in along the direction of the cylinder.