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US 10,953,849 B2Granted
Seatbelt device for vehicle
AssigneeMazda Motor Corporation
InventorsTeruhiko Hiruta, Yoichi Miyajima
Life of this patent
Estimating the term…
Abstract
A seatbelt device for a vehicle comprises a belt which restrains an occupant, a retractor which supports the belt so as to wind up one end of the belt, a frictional-force applier which is configured to apply a frictional force to the belt by contacting the belt, and an actuator to actuate the frictional-force applier so as to change the frictional force.
Claims15
A seatbelt device for a vehicle, comprising:
- a belt restraining an occupant;
- a retractor supporting the belt so as to wind up one end of the belt;
- a restraint-load applying device including a frictional-force applier arranged apart from the retractor and configured to apply a frictional force to said belt by contacting the belt, and an actuator having a motor as a driving resource to actuate said frictional-force applier so as to change the frictional force;
- and
- a control unit configured to control the restraint-load applying device, the control unit configured to:
- calculate a restraint load to be added by the restraint-load applying device,
- calculate a rotational angle of the motor required to apply the calculated added restraint load, based on a predetermined relationship between the added restraint load and the rotational angle of the motor, and
- operate the restraint-load applying device so that the motor is driven at the calculated rotational angle.
5 more elements
Dependencies are inferred from the claim text.