Seatbelt device
First Claim
Patent Images
1. A seatbelt device, comprising:
- a seatbelt for securing a passenger to a seat;
a retractor for retracting one end of said seatbelt;
a tongue plate through which said seatbelt passes;
a buckle arranged in the vicinity of the abdominal region of said passenger and connected removably to said tongue plate;
a collision prediction device for predicting a collision of a vehicle with an obstacle and generating a collision unavoidable signal when a distance from the vehicle to the obstacle is less than or equal to a collision unavoidable distance;
a collision detection device for generating a collision signal upon detecting a collision based on the impact acceleration inflicted upon the vehicle upon collision;
a first seatbelt tension increasing element for increasing the tension of said seatbelt when said collision unavoidable signal is received, a second seatbelt tension increasing element for increasing the tension of said seatbelt when said collision signal is received, wherein said first seatbelt tension increasing element increases the tension of the seatbelt before said second seatbelt tension increasing element increases the seatbelt tension, and after activation, said first seatbelt tension increasing element continues in operation until the impact acceleration has abated after the collision of the vehicle or until the buckle is disengaged.
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Abstract
Provided is a seatbelt device capable of reliably securing and protecting a passenger. This seatbelt device has a first seatbelt tension increasing unit (9a) for increasing the tension of the seatbelt (4), and a second seatbelt tension increasing unit (9b, 20, 30) for increasing the tension of the seatbelt (4). When this seatbelt device judges that the collision of a vehicle is unavoidable, it operates the first seatbelt tension increasing unit (9a) before the collision and operates the second seatbelt tension increasing unit (9b, 20, 30) when it detects the collision of the vehicle. Thereby, the passenger is reliably secured to the seat and his/her safety is ensured.
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Citations
13 Claims
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1. A seatbelt device, comprising:
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a seatbelt for securing a passenger to a seat;
a retractor for retracting one end of said seatbelt;
a tongue plate through which said seatbelt passes;
a buckle arranged in the vicinity of the abdominal region of said passenger and connected removably to said tongue plate;
a collision prediction device for predicting a collision of a vehicle with an obstacle and generating a collision unavoidable signal when a distance from the vehicle to the obstacle is less than or equal to a collision unavoidable distance;
a collision detection device for generating a collision signal upon detecting a collision based on the impact acceleration inflicted upon the vehicle upon collision;
a first seatbelt tension increasing element for increasing the tension of said seatbelt when said collision unavoidable signal is received, a second seatbelt tension increasing element for increasing the tension of said seatbelt when said collision signal is received, wherein said first seatbelt tension increasing element increases the tension of the seatbelt before said second seatbelt tension increasing element increases the seatbelt tension, and after activation, said first seatbelt tension increasing element continues in operation until the impact acceleration has abated after the collision of the vehicle or until the buckle is disengaged. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A seatbelt device, comprising:
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a seatbelt for securing a passenger to a seat of a vehicle;
an electromotive retractor for retracting said seatbelt with a motor;
a pretensioner for rapidly retracting said seatbelt using expansion gas as the driving power source;
a collision prediction element for predicting a collision of said vehicle;
a collision detection element for detecting the collision of said vehicle; and
a control unit for controlling at least the operation of said electromotive retractor based on the output of said collision prediction element and the operation of said pretensioner based on the output of said collision detection element, wherein said control unit sets a threshold value on a collision judgment of said collision detection element in accordance with the action/non-action of said electromotive retractor based on the output of said collision prediction element, in the case of the electromotive retractor being activated, a higher threshold value is set compared with the threshold value for a case of the electromotive retractor being non-activated to lessen a likelihood of the collision judgment as a collision. - View Dependent Claims (12)
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13. A seatbelt device, comprising:
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a seatbelt for securing a passenger to a seat;
a retractor for retracting one end of said seatbelt;
a tongue plate through which said seatbelt passes;
a buckle arranged in the vicinity of the abdominal region of said passenger and connected removably to said tongue plate;
a collision prediction device for predicting a collision of a vehicle with an obstacle and generating a collision unavoidable signal when a time or distance from the vehicle to the obstacle is less than or equal to a collision unavoidable time or distance;
a collision detection device for generating a collision signal upon detecting a collision based on the impact acceleration inflicted upon the vehicle upon collision;
a first seatbelt tension increasing element for increasing the tension of said seatbelt when said collision unavoidable signal is received, a second seatbelt tension increasing element for increasing the tension of said seatbelt when said collision signal is received, wherein said first seatbelt tension increasing element increases the tension of the seatbelt before said second seatbelt tension increasing element increases the seatbelt tension, and after activation, said first seatbelt tension increasing element continues in operation until the impact acceleration has abated after the collision of the vehicle or until the buckle is disengaged.
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Specification