Safety seat belt device
First Claim
1. A safety seat belt device for use in a motor vehicle, comprising:
- seat belt means for constraining an occupant of the motor vehicle, said seat belt means comprising a shoulder belt portion for extending across a thorax of the occupant and a lap belt portion for extending across a lower waist of the occupant; and
lock means for locking at least the shoulder belt portion against movement when the motor vehicle undergoes a forward or rearward collision, and locking only the lap belt portion when the motor vehicle undergoes a lateral collision.
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Accused Products
Abstract
A safety seat belt device for use in a motor vehicle has a seal belt for constraining an occupant of the motor vehicle. The seat belt includes a shoulder belt portion for extending across the thorax of the occupant and a lap belt portion for extending across the lower waist of the occupant. The safety seat belt device also includes a lock device for locking both the shoulder belt portion and the lap belt portion when the motor vehicle undergoes a forward or rearward collision, and locking only the lap belt portion when the motor vehicle undergoes a lateral collision. The lock device may include a lock mechanism for locking the shoulder belt portion upon a forward or rearward collision, and a lock mechanism for locking the lap belt portion immediately when the seat belt is fastened by the occupant regardless of whether the motor vehicle suffers a lateral collision or not.
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Citations
8 Claims
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1. A safety seat belt device for use in a motor vehicle, comprising:
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seat belt means for constraining an occupant of the motor vehicle, said seat belt means comprising a shoulder belt portion for extending across a thorax of the occupant and a lap belt portion for extending across a lower waist of the occupant; and lock means for locking at least the shoulder belt portion against movement when the motor vehicle undergoes a forward or rearward collision, and locking only the lap belt portion when the motor vehicle undergoes a lateral collision. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A safety seat belt device for use in a motor vehicle, comprising:
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a constraining system for an occupant of the motor vehicle, said constraining system comprising; a single seat belt having a distal end fixed to a vehicle body of the motor vehicle, and comprising a shoulder belt portion for extending across a thorax of the occupant and a lap belt portion for extending across a lower waist of the occupant; a retractor fixed to the vehicle body for retracting the single seat belt; a tongue, said single seat belt having an intermediate portion that passes through said tongue; and a buckle fixed to the vehicle body, into which the tongue is inserted; a collision detector for detecting a forward or rearward collision of the motor vehicle; a first lock mechanism disposed in said retractor for locking said shoulder belt portion of said single seat belt against movement in response to a signal from said collision detector when said constraining system is fastened by the occupant with the tongue being inserted and held in the buckle; and a second lock mechanism provided with at least one of said tongue and said buckle for locking only said lap belt portion against movement when said constraining system is fastened by the occupant with the tongue being inserted and held in the buckle. - View Dependent Claims (8)
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Specification