Damper

A damper filled with a damping medium in use comprising:

• an inner tube;
• an end member disposed at an end of the inner tube, the end member having an inner surface facing towards a first working chamber;
• a movable assembly comprising a piston assembly and a piston rod attached to said piston assembly, said movable assembly being slidably disposed within the inner tube, the movable assembly defining the first working chamber and a second working chamber within the inner tube, the piston rod being disposed in the second working chamber, said movable assembly having a surface facing towards the first working chamber;
• an actuated valve assembly being provided in the end member, the actuated valve assembly comprising a flow control member, said actuated valve assembly being configured to control a damping medium flow entering or exiting the first working chamber;
• wherein the movable assembly comprises:
• a stem assembly resiliently connected to the piston assembly and/or the piston rod via at least one biasing member, and
• an elongated cavity opening in the surface facing towards the first working chamber and extending in a direction opposed to the end member,
• wherein the stem assembly and the elongated cavity are adapted so that the stem assembly is guided in translation within the cavity,
• wherein the damper is configured so that the stem assembly actuates the actuated valve assembly, thereby causing a reduction in the damping medium flow exiting the first working chamber via the actuated valve assembly, while the movable assembly nears the end member, and
• wherein the flow control member comprises a cup having an interior side facing the inner surface of the end member.

A damper filled with a damping medium in use comprising:

• an inner tube;
• an end member disposed at an end of the inner tube, the end member having an inner surface facing towards a first working chamber;
• a movable assembly comprising a piston assembly and a piston rod attached to said piston assembly, said movable assembly being slidably disposed within the inner tube, the movable assembly defining the first working chamber and a second working chamber within the inner tube, the piston rod being disposed in the second working chamber, said movable assembly having a surface facing towards the first working chamber;
• an actuated valve assembly being provided in the end member, said actuated valve assembly being configured to control a damping medium flow entering or exiting the first working chamber;
• wherein the movable assembly comprises:
• a stem assembly resiliently connected to the piston assembly and/or the piston rod via at least one biasing member, and
• an elongated cavity opening in the surface facing towards the first working chamber and extending in a direction opposed to the end member,
• wherein the stem assembly and the elongated cavity are adapted so that the stem assembly is guided in translation within the cavity, and
• wherein the damper is configured so that the stem assembly actuates the actuated valve assembly, thereby causing a reduction in the damping medium flow exiting the first working chamber via the actuated valve assembly, while the movable assembly nears the end member,
• wherein the stem assembly comprises an actuating member for actuating the actuated valve assembly, said member forming the proximal end portion of the stem assembly, said member being fixed in rotation to a stem element of said stem assembly, said stem element axially extending from the elongated cavity to the actuating member,
• wherein a distal end of the stem element is connected to the at least one biasing member, said at least one biasing member comprising at least one spring, and
• wherein the at least one spring comprises a first spring and a second spring, wherein the first and second springs are in stack arrangement, and the distal end of the stem element is sandwiched between the first and second springs.