Vehicle occupant notification apparatus

A vehicle occupant notification apparatus configured to provide a notification to a vehicle occupant by retracting a seatbelt of a vehicle, the vehicle occupant notification apparatus comprising:

• a retraction device;
• and
• circuitry configured to:
• receive a measurement seatbelt operation amount when the vehicle occupant sits on a seat of the vehicle and fastens the seatbelt, the measurement seatbelt operation amount comprising either one of a measurement seatbelt pull-out amount that is a length by which the seatbelt is pulled out and a measurement seatbelt pull-out angle that is an angle at which the seatbelt is pulled out;
• determine whether the measurement seatbelt operation amount is larger than or equal to a predetermined value set in advance;
• cause the retraction device to vary a retraction amount in the retraction of the seatbelt when the notification is to be provided by retracting the seatbelt based on a command from the circuitry, the command indicating that the measurement seatbelt operation amount is larger than or equal to the predetermined value;
• measures a weight of the vehicle occupant sitting on the seat;
• and
• cause retraction device to vary the retraction amount in the retraction of the seatbelt based on the weight of the vehicle occupant and either one of the measurement seatbelt pull-out amount and the measurement seatbelt pull-out angle,
• wherein the seatbelt includes:
• a torso seatbelt extended diagonally across an upper body of the vehicle occupant that restrains shoulders and waist of the vehicle occupant;
• and
• a waist seatbelt extended horizontally across the waist of the vehicle occupant that restrains the waist of the vehicle occupant to the seat,
• wherein the measurement seatbelt pull-out angle includes:
• a first measurement seatbelt pull-out angle that is an aperture angle that increases as the torso seatbelt is pulled out sideways;
• and
• a second measurement seatbelt pull-out angle that is a rotational angle by which the torso seatbelt rotates forward.

A vehicle occupant notification apparatus configured to provide a notification to a vehicle occupant by retracting a seatbelt of a vehicle, the vehicle occupant notification apparatus comprising:

• an operation-amount measuring instrument configured to measure a measurement seatbelt operation amount when the vehicle occupant sits on a seat of the vehicle and fastens the seatbelt, the measurement seatbelt operation amount comprising a measurement seatbelt pull-out angle that is an angle at which the seatbelt is pulled out;
• an arithmetic controller configured to determine whether the measurement seatbelt operation amount is larger than or equal to a predetermined value set in advance;
• and
• a retraction device configured to vary a retraction amount in the retraction of the seatbelt when the notification is to be provided by retracting the seatbelt based on a command from the arithmetic controller, the command indicating that the measurement seatbelt operation amount is larger than or equal to the predetermined value,
• wherein the seatbelt includes:
• a torso seatbelt extended diagonally across an upper body of the vehicle occupant that restrains shoulders and waist of the vehicle occupant;
• and
• a waist seatbelt extended horizontally across the waist of the vehicle occupant that restrains the waist of the vehicle occupant to the seat,
• wherein the measurement seatbelt pull-out angle includes:
• a first measurement seatbelt pull-out angle that is an aperture angle that increases as the torso seatbelt is pulled out sideways;
• and
• a second measurement seatbelt pull-out angle that is a rotational angle by which the torso seatbelt rotates forward.