Thrust absorption mechanism

Claim 1

In a thrust absorption mechanism comprising a thrust piece (19) providing a stop for a moving body, said thrust piece (19) being displaced under the effect of the kinetic energy of said moving body against the action of a compression spring (20) and a shock absorber (21), a driving device (10,24) and retaining means (22,23) preventing the driving device from being engaged, the improvement wherein said retaining means (22,23) is released upon movement of said thrust piece (19), said mechanism comprises apparatus (5,12) for causing said device (10,24) to be engaged upon release of said retaining means (22,23), said driving device acting jointly with said moving body on said thrust piece (19) and driving said thrust piece in a controlled and predetermined movement, a bracket (2), a pin (3) fixedly mounted on said bracket, a first lever (4) rotatably mounted on said pin, said lever including a first arm (6) and a second arm (8), means connecting said second arm (8) to said thrust piece (19), said driving device comprising a cam (10) and a driving shaft (24), means for driving said shaft in continuous rotation, said cam (10) engaging said driving shaft (24) upon actuation of said apparatus (5,12), said cam comprising an eccentric roller (10) including a circular shoulder (11), said apparatus comprising a second lever (5) and a draw spring (12), said second lever rotatably mounted at one of its ends on said fixed pin (3), the other end of said second lever (5) engaging said circular shoulder (11) of said eccentric roller (10), said draw spring (12) acting on said eccentric roller through said second lever (5) and biasing said eccentric roller (10) toward said driving shaft (24).