Occupant restraint system
First Claim
1. An occupant restraint system for restraining an occupant in the event of a vehicle collision, comprising:
- an occupant sensor for detecting the constitution of the occupant sitting on a seat; and
a tension switch installed on a seat belt which becomes in a first state when a tension exceeding a first threshold value is exerted on the seat belt and becomes in a second state in cases of other situations, wherein an operational mode of the occupant restraint system is variable according to the conditions of the occupant sensor and the tension switch.
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Accused Products
Abstract
An occupant restraint system which, when an occupant on a vehicle seat is a child, can change the operational mode of an airbag device to a suitable mode. When the signal from an occupant estimating unit is not ON, an inflator is not actuated even when the output signal of an emergency detecting device is ON. A weight estimating portion determines whether the value of the load applied to the seat detected by weight sensors exceeds a threshold Y. An occupant condition estimating portion determines that the occupant is a child when the tension switch detects a tension exceeding a predetermined value and then sets the output signal of the occupant estimating unit to be OFF. When the tension switch does not detect a tension exceeding the predetermined value and the weight estimating portion determines that the load detected by the weight sensors does not exceed a threshold, it is determined that the occupant is a child and the output signal of the occupant estimating unit is set to be OFF.
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Citations
16 Claims
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1. An occupant restraint system for restraining an occupant in the event of a vehicle collision, comprising:
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an occupant sensor for detecting the constitution of the occupant sitting on a seat; and
a tension switch installed on a seat belt which becomes in a first state when a tension exceeding a first threshold value is exerted on the seat belt and becomes in a second state in cases of other situations, wherein an operational mode of the occupant restraint system is variable according to the conditions of the occupant sensor and the tension switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An occupant restraint system for restraining an occupant in the event of a vehicle collision, comprising:
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an occupant sensor for detecting the constitution of the occupant sitting on a seat; and
a tension switch installed on a seat belt which becomes in a first state when a tension exceeding a certain value (first threshold) is exerted on the seat belt and becomes in a second state in cases of other situations, wherein an operational mode of the occupant restraint system is variable according to the conditions of the occupant sensor and the tension switch;
wherein when a buckle switch detects that a tongue plate is not latched, the operational mode is determined assuming that the tension switch is in the second state. - View Dependent Claims (13)
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14. An occupant restraint system for restraining an occupant in the event of a vehicle collision, comprising:
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an occupant sensor for detecting the constitution of the occupant sitting on a seat;
a tension switch installed on a seat belt which becomes in a first state when a tension exceeding a certain value (first threshold) is exerted on the seat belt and becomes in a second state in cases of other situations; and
a short-circuit/breakage detecting device for detecting a short circuit and/or breakage of wiring to the tension switch, wherein an operational mode of the occupant restraint system is variable according to the conditions of the occupant sensor and the tension switch;
wherein the operational mode is determined assuming that the tension switch is in the second state when the short-circuit/breakage detecting device detects a short circuit and/or breakage of the wiring. - View Dependent Claims (15)
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16. An occupant restraint system for restraining an occupant in the event of a vehicle collision, comprising:
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an occupant sensor for detecting the constitution of the occupant sitting on a seat; and
a tension switch installed on a seat belt which becomes in a second state when no tension is applied to the seat belt or a tension not exceeding a first threshold value is exerted on the seat belt continuously for a predetermined period of time and becomes in a first state in cases of other situations, wherein an operational mode of the occupant restraint system is variable according to the conditions of the occupant sensor and the tension switch.
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Specification