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1. (WO2010075900) ARTICULATING DEVICE FOR VEHICLE SEAT
Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

CLAIMS

1. Articulating device for assisting a person in getting in/out of a vehicle, the device comprising articulating means placed between a cushion frame (5) and a cushion (1 ) of a seat of a vehicle for moving the cushion (1 ) of the seat in a longitudinal direction towards the front of the seat and in a lateral direction towards an access door to the seat, and for moving the cushion (1 ) with an upward movement suitable to obtain a reduction of the L4-L5 moment when the person gets in/out of the vehicle.

2. Articulating device according to claim 1 , wherein the reduction of the L4-L5 moment is at least 30%.

3. Articulating device according to any previous claim, wherein the amount of the upward movement is calculated according to the formula

M (Nm) = 0.015-x3 + 0.508-x2 + 4.4193-x + 16 wherein

M is the L4-L5 moment, x is the upward movement in mm.

4. Articulating device according to any previous claim, wherein the amount of the upward movement is at least 100 mm.

5. Articulating device according to any previous claim, wherein the articulating means comprises:

- at least one four-bar linkage (2), the cushion frame (5) of a seat being the fixed part and the cushion (1 ) of said seat being the coupler link, joined together by two rigid bars to form the four- bar linkage (2); - a linear actuator (3) fixed to the cushion frame (5) and the cushion (1 ) for actuating the four-bar linkages (2), and - a tie rod (4) fixed to the cushion frame (5) and the cushion (1 ), transverse to the movement of the four-bar linkages (2), whereby the linear actuator (3) is actuated to move the cushion (1 ) with the upward movement and in the lateral direction towards the access door of the vehicle, and the tie rod (4) is actuated to move the cushion (1 ) in the longitudinal direction towards the front of the seat, so that it facilitates getting in/out of the vehicle.

6. Articulating device according to claim 5, wherein the device comprises two four-bar linkages (2) one in the front and one in the rear of the device.

7. Articulating device according to any of claims 5-6, wherein the rigid bars of the four-bar linkage (2) on the side closer to the access door are shorter than those on the opposite side, whereby operation of the articulating device makes the cushion (5) tilt slightly towards the access door to further facilitate getting in/out of the vehicle.