Seat belt tightening system adapted to be mounted on an adjustab

Details Seat belt tightening system adapted to be mounted on an adjustab Seat belt tightening system adapted to be mounted on an adjustab

1989-04-10

1990-05-15

Marmor, Charles A.

Land vehicles

Wheeled

Attachment

297480, B60R 2240

Patent

active

049252127

ABSTRACT:
A seat belt tightening system adapted to be used in conjunction with a vehicle seat whose position can be adjusted, comprising: a deceleration sensor mounted on a vehicle body; a drive unit mounted on the vehicle body for producing drive power in response to detection of acceleration exceeding the threshold level by the deceleration sensor; a seat belt tightening unit mounted on the vehicle seat for applying tension to a seat belt with the drive power supplied from the drive unit; and drive power transmitting mechanisms for transmitting the drive power from the drive unit to the seat belt tightening unit, the drive power transmitting means being provided with coupling means for not interfering with adjustment movement of the seat. Since the seat belt tightening unit is mounted on the seat and the deceleration sensor is mounted on the vehicle body, an optimum position of the seat belt can be ensured irrespective of the adjustable position of the seat and the deceleration sensor is free from erroneous activation due to deceleration arising from the movement of the seat. Since the drive unit and the deceleration sensor may be formed as a single sub assembly, a fast response can be obtained, and the assembly work is simplified.

REFERENCES:
patent: 3833239 (1974-09-01), coenen
patent: 4317584 (1982-03-01), Takata
patent: 4730844 (1988-03-01), Patterson
patent: 4840325 (1989-06-01), Higuchi et al.
patent: 4864086 (1989-09-01), Akiyama et al.

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