A seatbelt retractor device includes a pre-tensioner section, and a force limiter section that can change a magnitude of a load at which to start reducing tension of the retracted seatbelt. A seatbelt control ECU activates the pre-tensioner section when a deceleration G detected by a floor sensor exceeds a first threshold, and acquires a collision velocity from a radar device and sets a second threshold value to a lower value the greater the collision velocity. The seatbelt control ECU controls the starting load for tension reduction by the force limiter section to be a high load when the deceleration G has exceeded the second threshold within a determination time period after activation of the pre-tensioner section, and controls the starting load for tension reduction to be a low load when which the deceleration G has not exceeded the second threshold within the determination time period.

A pretensioner and safety belt assembly may include includes a base member fixed to a vehicle, a torsion shaft having a first side and a second side rotatably supported on the base member, a torsion tube having a first end portion fixed on an external surface of the torsion shaft and a second end portion rotatably supported on the external surface of the torsion shaft wherein a belt configured to restrain an occupant is wound around an external surface of the torsion tube, a traction wire wound around an end portion of the torsion shaft on an opposite side to where the torsion tube is fixed to the torsion shaft in an opposite direction to a direction in which the belt is wound, and a pulling device configured to pull the traction wire to rotate the torsion shaft.

An active seat belt control apparatus is controlled according to a state of a vehicle. A control method for the active seat belt control apparatus includes: collecting, by a communication unit, state information about the vehicle; determining, by a controller, whether to activate a pulling operation of a seat belt using the collected state information; and activating the pulling operation of the seat belt using a motor.

A four-point seatbelt device for a vehicle including: a left and right pair of lap belts; a left and right pair of shoulder belts connected with the respective lap belts; a front latch portion connecting and disconnecting the left lap belt and left shoulder belt with the right lap belt and right shoulder belt; a retractor capable of taking up and pulling out the belt; a pull-out amount detection section capable of detecting a pull-out amount of the belt from the retractor; and a sitting posture detection section configured to determine the sitting posture of the occupant on the basis of the pull-out amount detected by the pull-out amount detection section, in a case in which a sitting posture of the occupant changes after the occupant sits on the vehicle seat and the front latch portion is connected.

A seatbelt control device includes: a first driving circuit that is configured to drive a motor of a motorized seat belt at a driver seat of a vehicle; a second driving circuit that is configured to drive a motor of a motorized seatbelt at a front passenger seat of the vehicle and a motor of a motorized seatbelt at a rear seat of the vehicle; and a control section that is configured to control the first driving circuit and the second driving circuit in accordance with input signals.

Vehicular control method to avoid collisions in which a smartphone is coupled to the vehicle while in a vehicular compartment. Data is generated from vehicle-resident sensors about operation of the vehicle and transferred from the vehicle to the smartphone while the smartphone is coupled to the vehicle. A communications network with another vehicle is established using the smartphone and the data transferred from the vehicle to the smartphone and data from sensors on the smartphone is transmitted via the smartphone and established communications network to other vehicle, the data including data about location and movement of the vehicle. Then, while the smartphone is coupled to the vehicle, a vehicular operational function is controlled based in part on data transmitted using the smartphone and established communications network to cause movement of the vehicle to change in order to avoid a collision with the other vehicle.

A webbing take-up device includes a spool, a lock base that restricts pull-out direction rotation of the spool in a vehicle emergency, and a linear energy absorbing wire that deforms so as to permit pull-out direction rotation of the spool at or above a force limiter load when the lock base has restricted pull-out direction rotation of the spool. The webbing take-up device further includes a housing with which the energy absorbing wire engages along a radial direction inside face of the housing, and a winder section provided at a radial direction inside of the housing. The winder section is capable of rotating together as a unit with the spool, and takes up the energy absorbing wire by being rotated. Moreover, a wire guide and a lever are provided between the winder section and the housing. The wire guide and the lever pinch and deform the energy absorbing wire.

A method for dynamically securing an occupant strapped into a vehicle seat with a seat belt involves determining a lateral acceleration of the vehicle and a road course ahead of the vehicle. A lateral acceleration to be expected in the course of a bend ahead of the vehicle is predicted based on image data of a vehicle environment acquired by means of at least one camera on the vehicle and/or on the basis of acquired data of a navigation map. In the event that the predicted lateral acceleration exceeds a situation-dependent predetermined trigger threshold for tightening the seat belt, a belt force acting on the seat belt is increased before the lateral acceleration acts on the occupant.

There is provided a seat belt retrieval control device including: a drive unit that drives a retrieval of a webbing; and a setting unit that is configured to, when a vehicle attitude is being controlled by an attitude control unit that controls a vehicle attitude, set a retrieval load applied by the drive unit to a predetermined first load, and when the vehicle attitude is not being controlled by the attitude control unit, set the retrieval load to a second load that is greater than the first load.

A seat belt retractor is provided for a vehicle and includes a safety seat belt strap for buckling up an occupant on a vehicle seat of the vehicle. The seat belt retractor also includes a regulator for regulating a seat belt restraining force level and/or a seat belt tensioner force level for the safety seat belt strap. A sensor detects restraining and/or tensioning-relevant data. A controller actuates the regulator on the basis of the restraining and/or tensioning-relevant data such that the seat belt retractor generates and/or includes the restraining and/or tensioning-relevant data.