Patent ID: 11918522
Assignee: MASATS, S.A.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A retractable ramp assembly for people to access vehicles, suitable to be mounted integrated in a floor of a vehicle and flush at a top with the same in an area adjacent to a door of the vehicle and capable of adopting two end positions, a resting position, wherein an access platform, which is essentially rectangular and that forms part of the ramp assembly, is hidden inside the vehicle, and an operative ramp position, wherein the platform is arranged on an inclined plane from the floor of the vehicle to a surface located at a lower height level from which people access the vehicle, comprising:
a framework, capable of being fixedly mounted and integrated in the area of the floor of the vehicle adjacent to a door and suitable for housing and moving the platform therein, the framework being provided with an oblong front opening for the platform to pass through it from one end position to the other;
movement transmission plate linked to the rear side of the platform, through which the platform moves linearly along the framework, moving closer to and further from the front opening; and
a lifting mechanism to minimize the height difference between the floor of the vehicle and the rear side of the platform in the operative ramp end position,
wherein the frame comprises a base that supports at least one lower bearing for the movement and lower support of the platform while the platform moves inside and with respect to the framework, the at least one lower bearing being located in the vicinity of the front opening and with a rotation shaft thereof oriented according to a direction parallel to the rear side of the platform, and the lifting mechanism comprises:
at least one rocker piece arranged between the movement transmission plate and the platform to which the rocker piece is joined by means of respective first and second articulations, rotation shafts of these articulations being parallel to the rear side of the platform, the rocker piece being located above the base of the framework and the rocker piece having a lower face oriented towards the base of the framework; and
at least one wedge, a base of which is fixedly arranged on the lower face of the at least one rocker piece, such that an inclined surface of the wedge is arranged facing towards the at least one lower bearing provided in the base of the framework, such that when the platform has passed through the front opening, the rear side thereof being outside the framework, the platform adopts a lifting position, before the operative ramp position, wherein the rocker piece moves with respect to the framework, a portion of the inclined surface of the at least one wedge resting directly on the at least one lower bearing, causing the rear side of the platform to raise to the level of the floor of the vehicle.