Device for damping the movement of a body at the end of travel

Device for damping, at the end of travel, of the movement of a body (Co) capable of moving between two positions, a first and a second position, relative to a given frame of reference (Re), characterized in that it comprises:

• a first abutment (B1) defining the first position, this said first abutment being connected to the said frame of reference (Re),
• a second abutment (B2) defining the second position, this said second abutment being connected to the said frame of reference (Re),
• a first cylinder (10),
• a first wall (11) closing off a first end (12) of the said first cylinder (10) and capable of coming into contact with the said first abutment (B1),
• a first piston (14) mounted so as to slide sealingly in the said first cylinder (10) in order to delimit between it, the internal wall of the first cylinder (10) and the said first wall (11), a first chamber (16) with a volume that can vary according to the sliding of the said first piston (14) in the first cylinder (10),
• a second cylinder (20) with an external section at most equal to the internal section of the first cylinder (10),
• means for mounting the said second cylinder in cooperation with the first piston (14) so that the latter closes off a first end (21) of the said second cylinder (20) and that this second cylinder is not situated in the first chamber (16),
• a second piston (24) mounted so as to slide sealingly in the said second cylinder (20) in order to delimit between it, the internal wall of the second cylinder (20) and the said first piston (14), a second chamber (26) with a volume that can vary according to the sliding of the second piston in the second cylinder (20),
• a first fluid (Li) filling the two chambers, the first and second chamber (16, 26),
• means (30) for placing the said first and second chambers (16, 26) in fluidic communication under a pressure loss (90) of at least a given value,
• a third abutment (40) capable of coming into contact with the said second abutment (B2),
• means (41) for mounting the said third abutment (40) in cooperation with the said second piston (24) so that this said third abutment (40) has a movement correlative with that of the second piston (24) and that it is situated in the half-space delimited by the said second piston (24) and opposite to that in which the second chamber (26) is situated,
• means (50) for connecting the said second cylinder (20) to the said body (Co), and
• means (59) for connecting the said second cylinder (20) to the said frame of reference (Re).