Patent ID: 8166839
Filing Date: 2012-05-01
Classification: B60N,F16H,Y10T

Abstract:
1. A transmission device for a vehicle seat adjuster configured to adjust the inclination of a backrest of a vehicle seat, the transmission device comprising: at least a first lever and a second lever extending radially from a shaft defining a first axis and connected thereto, the first and second levers each having a free end and configured to provide a rotary output motion; a latch rotationally locked on the shaft; and at least a first inclined face and a second inclined face situated substantially opposite to one another relative to the first axis and movable in substantially opposite directions toward the first axis in a substantially linear manner, the first and second inclined faces each including one of a curvilinear and a polygonal portion, wherein the free ends of the first and second levers engage the first and second inclined faces at a point of action and move back and forth in a reciprocal manner along the first and second inclined faces respectively for translating the linear movement of the first and second inclined faces into the rotary output motion, wherein an inclination of the first and second inclined faces varies such that the inclination at the point of action increases as the first and second inclined faces move toward the first axis, the inclination being measured relative to an imaginary straight line connecting the first axis and the point of action, and wherein the latch is configured to limit the movement of the first and second levers.