| US 7,581,613 B2 | ||
| Seat belt device | ||
| Shotaro Odate, Wako (Japan); Hiroshi Akaba, Wako (Japan); Yutaka Wakisaka, Wako (Japan); Tsutomu Terasaki, Wako (Japan); Osamu Kanno, Wako (Japan); and Kenichi Saito, Wako (Japan) | ||
| Assigned to Honda Motor Co., Ltd., Tokyo (Japan) | ||
| Filed on Jul. 05, 2007, as Appl. No. 11/773,678. | ||
| Claims priority of application No. 2006-190420 (JP), filed on Jul. 11, 2006. | ||
| Prior Publication US 2008/0012282 A1, Jan. 17, 2008 | ||
| Int. Cl. B60R 22/00 (2006.01) | ||
| U.S. Cl. 180—268 [280/806; 280/807; 280/808; 701/45] | 4 Claims |
| 1. A seat belt device comprising:
a first unit for determining a possible collision of an automobile in response to a manipulation thereof by a driver;
a second unit for detecting the collision of the automobile;
seat belt webbing;
a spindle around which a portion of the seat belt webbing is wound;
a first pretensioner having a motor to rotate in a direction to wind the seat belt webbing onto the spindle in response to
a signal indicative of the possible collision determined by the first unit;
a second pretensioner pyrotechnically driven to rotate in a direction to wind the seat belt webbing onto the spindle in response
to a signal indicative of the collision detected by the second unit; and
a controller configured to cancel an operation of the first pretensioner after an activation of the second pretensioner in
a state in which the first pretensioner and the spindle are mechanically connected to each other, wherein
the first pretensioner includes a limiter for restricting the motor from transmitting a driving force to the spindle exceeding
a predetermined threshold, while resisting the spindle rotating in a direction to unwind the seat belt webbing.
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