| 摘要 |
A seat belt retractor system for restraining a passenger in a vehicle is provided with a tension-relieving means (18) engageable by a manual overt actuator (62), which system includes the following: initiation of the tensionless mode requires conscious actuation by the passenger; incorporation of an activated position, which allows retraction of any belt slack prior to engagement of the tensionless mode; subsequent slight belt protraction beyond the activated position engages the tensionless mode; a "memory" allowing belt protraction, less than a predetermined length, from the tensionless mode and return thereto; a means whereby belt protraction greater than the predetermined distance automatically returns the retractor and belt to the tensioned mode; and, an automatically operable actuator (38), which may be activated by the opening of the vehicle door for automatic return of the retractor (10), to the belt-tensioned mode. |
