Seat belt device
AssigneeTakata Corporation
InventorsHideaki Yano, Keisuke Narimatsu, Tetsuya Hamaue
Life of this patent
Estimating the term…
Abstract
A seat belt retractor 80 is attached to a seat back 14 and a cable advancing and retreating mechanism 20 is attached to a portion where a supporting arm 12 and a shaft 18 for inclining the seat back 14 are connected to each other. The supporting arm 12 projects from a seat cushion 10 for supporting the seat back 14. Corresponding to the inclination of the seat back 14, a cable 70 laid between the cable advancing and retreating mechanism 20 and the seat belt retractor 80 is advanced or retreated from/into the cable advancing and retreating mechanism 20. The attitude of the acceleration sensor 92 attached to the seat belt retractor 80 is controlled by advancing or retreating the cable 70 so that the acceleration sensor 92 always stands perpendicularly.
Claims7
A seat belt device which is installed in a seat of a vehicle having a seat cushion and a seat back connected pivotably to the seat cushion, comprising:
- a seat belt;
- a seat belt retractor for retracting the seat belt and incorporated in the seat back;
- a cable, one end of which is engaged to the seat belt retractor;
- and
- a cable advancing and retreating mechanism attached to a portion where the seat back and the seat cushion are connected to each other, the other end of said cable being engaged to said mechanism, and said mechanism moving the cable corresponding to inclination of the seat back,
- said seat belt retractor comprising a reel for winding the seat belt, a locking mechanism for locking the reel to rotate in a seat belt withdrawing direction, an acceleration sensor for activating the locking mechanism, a rotor engaged with the acceleration sensor and to which one end of said cable is connected, and a retractor frame in which the reel, the locking mechanism, and the acceleration sensor are assembled and to which said sensor is supported pivotably about a horizontal axis,
- whereby said cable advancing and retreating mechanism rotates the rotor by way of the cable so that the sensor stands vertically at any angle of inclination of the seat back,
- wherein said cable advancing and retreating mechanism is provided with a pinion rotating coupled with the seat back and a rack engaging the pinion,
- wherein said rack comprises a main rack engaging said pinion and a sub rack attached to the main rack so that the position of the sub rack is adjustable along the length of the main rack, and
- wherein the sub rack is connected with said cable.
A seat belt device which is installed in a seat of a vehicle having a seat cushion and a seat back connected pivotably to the seat cushion, comprising:
- a seat belt;
- a seat belt retractor for retracting the seat belt and incorporated in the seat back;
- a cable, one end of which is engaged to the seat belt retractor;
- and
- a cable advancing and retreating mechanism attached to a portion where the seat back and the seat cushion are connected to each other, the other end of said cable being engaged to said mechanism, and said mechanism moving the cable corresponding to inclination of the seat back,
- said seat belt retractor comprising a reel for winding the seat belt, a locking mechanism for locking the reel to rotate in a seat belt withdrawing direction, an acceleration sensor for activating the locking mechanism, a rotor engaged with the acceleration sensor and to which one end of said cable is connected, and a retractor frame in which the reel, the locking mechanism, and the acceleration sensor are assembled and to which said sensor is supported pivotably about a horizontal axis,
- whereby said cable advancing and retreating mechanism rotates the rotor by way of the cable so that the sensor stands vertically at any angle of inclination of the seat back,
- wherein said cable advancing and retreating mechanism is provided with a fixed pinion and a rack which is engaged with the pinion and moves along a perimeter of the pinion when the seat back pivots,
- wherein said cable is connected to said rack, and
- wherein said cable is attached to said rack so that the position of the cable is adjusted along the length of the rack.
Dependencies are inferred from the claim text.