INTAKE VALVE FOR AIR SPRING SUSPENSION OF TRUCK CABINS

摘要

In an intake valve for air spring suspensions of truck cabins, the suspension is adapted to connect first and second mechanical elements with possibility of mutual movement and includes a variable volume chamber containing air; elastic element arranged between the mechanical elements; an intake valve for inflow of air into the chamber; an exhaust valve for outflow of air from the chamber. The intake valve includes: a valve body provided with an axial duct including an air inlet and outlet ports; an operating mechanism of the valve, including a piston and a spring. The piston includes a rod and a head and is arranged inside the valve body so vertical movement of its rod, in cooperation with the outlet port of the axial duct, defines a cross section area for air flow inside the chamber.

主权项

1. An intake valve (1) for air spring suspension of truck cabins, wherein said suspension is adapted to connect a first and a second mechanical element with possibility of mutual movement and comprises:
a variable volume chamber containing air; elastic means arranged between said first and second mechanical element; an intake valve (1) for inflow of air into said chamber; an exhaust valve for outflow of air from said chamber; wherein said intake valve (1) comprises: a valve body (2) provided with an axial duct (3) comprising an inlet port (4) for inflow of air into said valve (1) and an outlet port (5) for outflow of said air toward said chamber of said suspension; an operating mechanism of said valve (1), comprising a piston (8) and a spring (9), wherein said piston (8) comprises a rod (10) and a head (11) and is arranged inside said valve body (2) so that the vertical movement of the rod (10), in cooperation with the outlet port (4) of said axial duct (3), defines a cross section area for air flow inside said chamber, wherein said rod (10) is geometrically shaped to increase said cross sectional area for air flow as penetration of said rod (10) in said duct (3) increases.