Lifting mechanism for a foldable ramp for wheelchair access to a passenger car rear door and foldable ramp

A lifting mechanism for a foldable ramp providing wheelchair access to a passenger car rear door, the foldable ramp being swivelable between several positions including a passive position in which the foldable ramp is arranged in the car in a lying position, the lifting mechanism comprising:

• a force accumulator configured to generate a bias force and including an extension spring;
• and
• a swivel lifting arm configured to:
• be biased, by the bias force generated by the force accumulator, in the passive position of the foldable ramp and be activated to release and transmit its bias into a lifting force on the foldable ramp, wherein the swivel lifting arm includes a force application section configured to transmit the lifting force on the foldable ramp and a lever section opposite the force application section and connected to the extension spring.