Seat belt retractor and a seat belt device
First Claim
1. A seat belt retractor, comprising:
- a motor for winding up a seat belt;
wherein the motor is configured to be controlled so that a speed of winding up the seat belt is varied between different winding speeds;
wherein the motor is configured to be controlled so that the different winding speeds are each produced when a buckle and a tongue on the seat belt are in an unlatched state; and
a control unit configured to control a speed of the motor between a first high speed, a low speed, and a second high speed;
wherein the control unit is configured to control the speed of the motor so that the first high speed, the low speed, and the second high speed are each produced when the tongue and buckle are in an unlatched state.
4 Assignments
0 Petitions
Accused Products
Abstract
As an occupant releases the latching between a buckle and a tongue, a seat belt retractor winds up the seat belt at a winding-up speed S1 as a first high speed. Accordingly, the seat belt moves away from the occupant immediately. As a time period (T1-T0) elapses from the buckle release, the seat belt retractor winds up the seat belt at a winding-up speed S2 as a low speed. Accordingly, the seat belt is slowly wound up so that the tongue is less likely to strike and thus scratch an interior panel. As a time period (T2-T1) further elapses, the seat belt retractor winds up the seat belt at a winding-up speed S3 as a second high speed. Accordingly, the winding of the seat belt is promptly completed so that the seat belt is less likely to be caught by a door when the occupant gets out of the vehicle.
44 Citations
16 Claims
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1. A seat belt retractor, comprising:
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a motor for winding up a seat belt; wherein the motor is configured to be controlled so that a speed of winding up the seat belt is varied between different winding speeds; wherein the motor is configured to be controlled so that the different winding speeds are each produced when a buckle and a tongue on the seat belt are in an unlatched state; and a control unit configured to control a speed of the motor between a first high speed, a low speed, and a second high speed; wherein the control unit is configured to control the speed of the motor so that the first high speed, the low speed, and the second high speed are each produced when the tongue and buckle are in an unlatched state. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A seat belt system, comprising:
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a seat belt; a tongue attached to the seat belt; a buckle configured to releasably latch with the tongue; and a seat belt retractor with a motor configured to enable a winding up process of the seat belt, the motor being configured to wind up the seat belt after unlatching of the tongue and the buckle; and a control unit configured to control a speed of the motor between a first high speed, a low speed, and a second high speed; wherein the control unit is configured to control the speed of the motor so that the first high speed, the low speed, and the second high speed are each produced when the tongue and buckle are in an unlatched state. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification