Passive seat belt system
First Claim
Patent Images
1. A passive seat belt system for automatic fastening or unfastening of a seat belt in response to the boarding or alighting of a vehicle occupant, comprising:
- overload detecting means for detecting the presence of an overload in the movement of a movable anchor of said seat belt, andcontrol means for reversing and then stopping a drive motor for said movable anchor in response to the detection of an overload in the movement of said movable anchor by said overload detecting means.
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Abstract
A passive seat belt system for automatic fastening or unfastening of a seat belt in response to the boarding and exiting of a seat occupant has an overload for detector for detecting the presence of an overload in the movement of a movable anchor of the seat belt, and a controller adapted for stopping a motor for moving said movable anchor in response to the detection of an overload in the movement of the movable anchor.
21 Citations
44 Claims
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1. A passive seat belt system for automatic fastening or unfastening of a seat belt in response to the boarding or alighting of a vehicle occupant, comprising:
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overload detecting means for detecting the presence of an overload in the movement of a movable anchor of said seat belt, and control means for reversing and then stopping a drive motor for said movable anchor in response to the detection of an overload in the movement of said movable anchor by said overload detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A passive seat belt system for automatic fastening or unfastening of a seat belt in response to the boarding or alighting of a vehicle occupant, comprising:
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overload detecting means for detecting the presence of an overload in the movement of a movable anchor of said seat belt, and control means for stopping a drive motor for said movable anchor in response to the detection of an overload in the movement of said movable anchor by said overload detecting means, said overload detecting means including rotation detecting means adapted to detect voltage changes generated at the change-over of connections of rotor coils of said motor between a commutator and brushes thereof for detecting rotation of said motor, and to identify an overload state when the frequency of said voltage changes becomes lower than a set value.
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17. A passive seat belt system for automatic fastening or unfastening of a seat belt in response to the boarding or alighting of a vehicle occupant, comprising:
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overload detecting means for detecting the presence of an overload in the movement of a movable anchor of said seat belt, and control means for stopping a drive motor for said movable anchor in response to the detection of an overload in the movement of said movable anchor by said overload detecting means, said overload detecting means including rotation detecting means adapted to detect the rotation of said motor from one of an output shaft of said motor and a pulley for a drive member for said anchor of said seat belt, and to identify an overload state when the rotation of said motor becomes lower than a set value. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A passive seat belt system for automatic fastening or unfastening of a seat belt in response to the boarding or alighting of a vehicle occupant, comprising:
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overload detecting means for detecting the presence of an overload in the movement of a movable anchor of said seat belt, and control means for stopping a drive motor for said movable anchor in response to the detection of an overload in the movement of said movable anchor by said overload detecting means, said overload detecting means including torque detecting means for detecting the rotary torque of a pulley or said motor and identifying an overload state when said torque exceeds a set value. - View Dependent Claims (31, 32, 33, 34, 35)
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36. A passive seat belt system for automatic fastening or unfastening of a seat belt in response to the boarding or alighting of a vehicle occupant, comprising:
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overload detecting means for detecting the presence of an overload in the movement of a movable anchor of said seat belt, and control means for stopping a drive motor for said movable anchor in response to the detection of an overload in the movement of said movable anchor by said overload detecting means, said overload detecting means including means for detecting one of movement and speed of a drive member for said movable anchor and identifying an overload state when said one of movement and speed of said drive member is less than a set value. - View Dependent Claims (37, 38, 39)
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40. A passive seat belt system for automatic fastening or unfastening of a seat belt in response to the boarding or alighting of a vehicle occupant, comprising:
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overload detecting means for detecting the presence of an overload in the movement of a movable anchor of said seat belt, and control means for reversing and then stopping a drive motor for said movable anchor in response to the detection of an overload in the movement of said movable anchor by said overload detecting means, said overload detecting means comprising overcurrent detecting means, including converter means for converting the current in said motor into a voltage, set value determining means for determining a set value in dependence upon a power supply voltage, and comparator means for comparing the voltage from said converter means with a set voltage from said set value determining means and producing an overload signal when the voltage from said converter means exceeds said set voltage. - View Dependent Claims (41, 42, 43, 44)
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Specification