| 摘要 |
A vehicle seat belt retractor system (10) includes two seats (16, 18) each having its own integrated seat belt webbing retractor (60, 112). Each retractor (60, 112) includes a locking assembly (76, 80) for blocking belt withdrawal in response to an electrical signal. At a central location in the vehicle spaced from the seats (16, 18), a sensor (24) is disposed for sensing vehicle deceleration exceeding a predetermined deceleration and for providing a control signal indicative thereof. An RF transmitter (42) is electrically connected with the sensor (24) and is actuatable in response to the control signal to transmit an RF signal. An RF receiver (100, 114) on each vehicle seat (16, 18) receives the RF signal and provides an output signal to actuate the locking assembly (76, 80) of the two seat belt retractors (60, 112). Each vehicle seat (16, 18) also has (a) a battery (98) for supplying electric power to actuate the locking assembly (76, 80) of the retractors (60, 112) and (b) a piezoelectric member (90) responsive to an occupant sitting on the seat for generating an electric current to charge the battery (96). In a second embodiment, a separate deceleration sensor (24a) is mounted on each vehicle seat for electrically actuating its associated retractor. In a third embodiment, the transmitted signal provides the power for actuating a vehicle occupant restraint (178).
|
