Passenger safety device, vehicle including same and method of operating safety device using same

A method of operating a passenger safety device, the method comprising:

• a wheelchair docking device driving operation of coupling, by a controller, a wheelchair docking device to a wheelchair and moving, by the controller, the wheelchair by the wheelchair docking device;
• a first restraint device driving operation of rotating, by the controller, a first restraint device;
• and
• a second restraint device driving operation of moving, by the controller, a belt support portion of a second restraint device, wherein, in the second restraint device driving operation, the controller controls movement of the belt support portion by moving a roller connected to a wire by a wire motor.

A passenger safety device comprising:

• a belt;
• a first restraint device being rotatable and having a first side and a second side connected to the belt, wherein the first restraint device includes:
• a rotary motor,
• a rotary arm connected to the rotary motor,
• a first support arm connected to a first rotary-arm side of the rotary arm, and
• a second support arm connected to a second rotary-arm side of the rotary arm, wherein the first support arm and the second support arm are connected by the belt;
• a second restraint device connected to the first restraint device by the belt, wherein the second restraint device includes:
• a roller rail,
• a roller connected to the roller rail and being drivable on the roller rail, and
• a belt support portion connected to the roller and configured to support the belt;
• and
• a retractor located below the first restraint device and the second restraint device, wherein the retractor is configured to adjust a belt length of the belt, and wherein the belt extends from the retractor and passes through the belt support portion and the first support arm to the second support arm.