The drive arm to be wiped - glass comprising a rigid portion elastically deformable in flexion in a plane with the inextensible reinforcement elements

摘要

A drive arm for a wiper blade has a rear end portion configured to be fixed to a drive shaft of the arm in an alternating sweep movement about a roughly vertical axis, a free front end portion operable to carry the wiper blade, an intermediate portion of longitudinal principal orientation that is elastically deformable in a vertical longitudinal plane and that connects the rear portion to the front portion, and a stiffener for stiffening the intermediate portion flexurally in a horizontal plane. The stiffener has at least one first flexible longitudinal element that is fixed along a first longitudinal lateral face of the intermediate portion so that, when a transverse force is applied to the intermediate portion in a first direction, a longitudinal stress is exerted on the first reinforcing element.