Patent ID: 8235478

Claim:
An acceleration device ( 50 ) including: a housing ( 11 ), a carrier element ( 40 ) movably supported in the housing ( 11 ), and a first energy store ( 52 ) of low stiffness disposed in the housing ( 11 ) and connected to the carrier element ( 40 ) for moving the carrier element ( 40 ) from a force or form-locked parking position ( 1 ) to an end position ( 2 ) by a discharge of the first energy store ( 52 ), said acceleration device ( 50 ) including a guide arrangement ( 60 ) with a second energy store ( 62 ) of higher stiffness than that of the first energy store ( 52 ), both energy stores ( 52 , 62 ) being charged to initial energy values when the carrier element ( 40 ) is in the parking position ( 1 ) and being discharged to residual energy values during movement of the carrier element ( 40 ) to the end position, the guide arrangement ( 60 ) including a guide element ( 61 ) for firmly guiding the first energy store ( 52 ), and the second energy store ( 62 ), which, upon the release of the carrier element ( 40 ) from its parking position ( 1 ) by an external operating element, is discharged from its initial energy value to its residual energy value while moving the carrier element ( 40 ) toward its end position ( 2 ), controlling, by means of the guide element ( 61 ), the energy change rate of the first energy store ( 52 ) at least in a partial interval of the discharge interval of the first energy store ( 52 ); wherein the guide arrangement ( 60 ) is guided in the housing ( 11 ) in a straight line guide structure ( 14 ) and the carrier element ( 40 ) is guided in a guide track ( 21 ) extending essentially parallel to the guide structure ( 14 ) and a deceleration device ( 30 ) including a piston rod ( 34 ) is arranged in alignment with the guide track ( 21 ) with the piston rod ( 34 ) being connected to the carrier element ( 40 ).