초록 ▼

A control valve linkage arrangement which is closely adjacent a vehicle operator and which allows easy access to a compartment upon which the operator sits. A control linkage (12) is disclosed wherein positioning of the member (30) to be controlled determines a control signal. The linkage (12) is co

A control valve linkage arrangement which is closely adjacent a vehicle operator and which allows easy access to a compartment upon which the operator sits. A control linkage (12) is disclosed wherein positioning of the member (30) to be controlled determines a control signal. The linkage (12) is connected to the valve control member (30) and may be pivoted relative to the valve control member (30) along a plane generally containing the valve control member (30) without axial movement of the said member (30). The linkage (12) can also be moved axially thereby moving the control member (30) axially without pivoting the linkage (12) relative to the control member (30).

대표청구항 ▼

In a control valve linkage (12) having a control valve (32) mounted beneath a floor (34) of a vehicle (10), and a control member (30) having a top end portion extending upwardly from the control valve (32) through the floor (34), axial positioning of said control member (30) determining a control si

In a control valve linkage (12) having a control valve (32) mounted beneath a floor (34) of a vehicle (10), and a control member (30) having a top end portion extending upwardly from the control valve (32) through the floor (34), axial positioning of said control member (30) determining a control signal from said control valve (32) and controlling operation of a work circuit carried by the vehicle (10), the improvement comprising: a link member (36) having first and second member end portions; means (40) for attaching said first member end portion to said top end portion of said control member (30), said link member (36) being pivotable about an axis and only in a plane; an enclosure structure (46) having first and second structure end portions, said structure (46) being positioned a spaced distance from and substantially parallel to said link member (36); means (50) for attaching said structure first end portion to said vehicle (10) at a location above said floor (34) adjacent said member first end portion for pivoting in said plane; a bellcrank (53) having a first arm (54), a second arm (60) and a central portion, said first arm (54) and said central portion being in said plane; means (56) for attaching said first arm (54) to said member second end portion for pivoting in said plane; and means (58) for attaching said central portion to said structure second end portion, said bellcrank (53) being pivotable in said plane; said structure (46), said link member (36), said first arm (54) and said spaced distance between said means (40) and said means (50) defining a substantially parallelogram linkage (45) in said plane providing pivoting of said link member (36) about said means (40) without axial movement of said control member (30) and providing pivoting of said second arm (60) to provide axial movement of said link member (36) to axially move said control member 30 without significant pivoting of said link member (36) about said means (40).