Seat belt retractor and seat belt apparatus
First Claim
Patent Images
1. A seat belt retractor to be installed in a vehicle comprising:
- an electric motor;
a spool capable of winding and unwinding a seat belt for occupant restraint according to a driving of the electric motor; and
a controller for controlling the electric motor,wherein the controller is configured to perform a control mode in which the electric motor is controlled to rotate in a belt winding direction based on a status of a wearing of the seat belt on a vehicle occupant and a status of a vehicle door corresponding to the seat belt, andwherein the controller is configured to perform a control mode in which the electric motor is controlled not to rotate in the belt winding direction when the wearing of the seat belt is cancelled and the vehicle door corresponding to the seat belt is either in a closed state or is not changed from a closed state to an open state.
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Accused Products
Abstract
The disclosed seat belt retractor and seat belt apparatus may be used to provide a technology effective for reducing the risk of making a vehicle occupant uncomfortable with regard to the seat belt winding action. A seat belt retractor and seat belt apparatus may comprise an electric motor, a spool capable of winding and unwinding a seat belt for occupant restraint, and a controller configured to perform a control mode in which the electric motor is controlled to rotate in a belt winding direction based on the status of a wearing of the seat belt on a vehicle occupant and the status of a vehicle door corresponding to the seat belt.
51 Citations
14 Claims
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1. A seat belt retractor to be installed in a vehicle comprising:
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an electric motor; a spool capable of winding and unwinding a seat belt for occupant restraint according to a driving of the electric motor; and a controller for controlling the electric motor, wherein the controller is configured to perform a control mode in which the electric motor is controlled to rotate in a belt winding direction based on a status of a wearing of the seat belt on a vehicle occupant and a status of a vehicle door corresponding to the seat belt, and wherein the controller is configured to perform a control mode in which the electric motor is controlled not to rotate in the belt winding direction when the wearing of the seat belt is cancelled and the vehicle door corresponding to the seat belt is either in a closed state or is not changed from a closed state to an open state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A seat belt apparatus to be installed in a vehicle comprising:
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a seat belt for occupant restraint which is adapted to be worn by a vehicle occupant; an electric motor; a spool capable of winding and unwinding a seat belt for occupant restraint according to a driving of the electric motor; a controller for controlling the electric motor; a seat belt buckle fixed to the vehicle; a tongue attached to the seat belt and is configured to latch to the seat belt buckle when the seat belt is worn; and a detection sensor for detecting that the tongue is latched to the seat belt buckle, wherein the controller is configured to perform a control mode in which the electric motor is controlled to rotate in a belt winding direction based on a status of a wearing of the seat belt on the vehicle occupant and a status of a vehicle door corresponding to the seat belt, and wherein the controller is configured to perform a control mode in which the electric motor is controlled not to rotate in the belt winding direction when the wearing of the seat belt is cancelled and the vehicle door corresponding to the seat belt is either in a closed state or is not changed from a closed state to an open state. - View Dependent Claims (9, 10, 11, 12)
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13. A vehicle with a seat belt apparatus comprising:
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a seat belt apparatus comprising; a seat belt for occupant restraint which is adapted to be worn by a vehicle occupant; an electric motor; a spool capable of winding and unwinding the seat belt for occupant restraint according to a driving of the electric motor; a controller for controlling the electric motor; a seat belt buckle fixed to the vehicle; a tongue attached to the seat belt and is configured to latch to the seat belt buckle when the seat belt is worn; and a detection sensor for detecting that the tongue is latched to the seat belt buckle, wherein the controller is configured to perform a control mode in which the electric motor is controlled to rotate in a belt winding direction based on the status of a wearing of the seat belt on the vehicle occupant and the status of a vehicle door corresponding to the seat belt, wherein the seat belt apparatus is accommodated in an accommodating space in the vehicle, and wherein the controller is configured to perform a control mode in which the electric motor is controlled not to rotate in the belt winding direction when the wearing of the seat belt is cancelled and the vehicle door corresponding to the seat belt is either in a closed state or is not changed from a closed state to an open state. - View Dependent Claims (14)
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Specification