Entry aid with three-point bearing for a rail vehicle or a motor vehicle

摘要

An entry aid for a rail vehicle or a motor vehicle have a step, which is movably supported on rolling elements and/or sliding surfaces, and a drive, which is coupled to the step for extending and retracting the step. The rolling elements/sliding surfaces are positioned in exactly three support regions at a distance from one another and arranged in a triangle. Alternatively the rolling elements/sliding surfaces can be arranged on rockers, and bearing points of the rockers can be positioned in exactly three support regions at a distance from one another and arranged in a triangle.

主权项

1. An entry aid for a rail vehicle or a motor vehicle, the entry aid comprising,
a footboard mounted displaceably on rolling bodies and/or sliding surfaces; each rolling body and/or sliding surface mounted resiliently with a spring; and a drive coupled to the footboard which extends and retracts the footboard, wherein the rolling bodies and/or sliding surfaces are:
positioned in precisely three support regions spaced apart from one another and arranged in a triangle, orarranged on a plurality of rockers, and bearing points of the rockers are positioned in precisely three support regions spaced apart from one another and arranged in a triangle;wherein each spring limits the loading of the rolling body and/or sliding surface in a direction perpendicular to extension of the footboard to a force defined by a spring constant and spring deflection of the spring.