MECANISMO DE DIRECAO DE VEICULO PARA CONVERTER MOVIMENTO DE ROTACAO DE ELEMENTO DE CONTROLE DE ENTRADA DE DIRECAO E DE EIXO DE ENTRADA

摘要

A vehicular steering mechanism of overly complex construction is known which displaces a left turn control valve or a right turn control valve through separated cams in response to the rotation of a steering wheel. The subject steering mechanism is simpler, more economical and more compact by including an input shaft and a single actuating cam which are conjointly rotatable away from a neutral position in either direction. The actuating cam defines a profiled guide slot of a substantially spiral shape, and a cam follower assembly is cooperatively associated therewith including a cam following roller wheel that is received in the profiled guide slot. The cam follower assembly includes a bellcrank supporting the roller wheel and indirectly connected to a left turn control valve and a right turn control valve. The vehicle is steered by the controlled rotation of the bellcrank and the subsequent displacement of the control valves and. The steering mechanism also includes an effective centering and stop assembly.