Frictional damper

A frictional damper comprising a substantially circular cylindrical housing (1) and a tappet (2) which is coaxially displaceable inside the housing (1) and extends out of it with one end, another end being provided with an approximately cylindrical friction piston (13), the friction piston (13) having at least one approximately circular cylindrical support segment (18, 19) and bracing flanges (14 to 17) radially extending beyond the support segment (18, 19) at fixed distances, a friction coating (20, 21) made of an elastically resilient material being disposed on the support segment (18, 19) and between the bracing flanges (14 to 17) and being elastically pressed against an inner wall (36) of the housing (1), and a grease storage chamber (23, 23') being formed on the friction piston (13), wherein the grease storage chamber (23, 23') is formed internally of the friction piston (13) and is connected by way of at least one grease channel (34) axially spaced apart from the friction coating (20, 21) and the support segment (18, 19) with a grease chamber (22) formed at the outer circumference of the friction piston (13) at a location spaced apart from the friction coating (20, 21) by at least one of the bracing flanges (14 to 17) and open towards the inner wall (36) of the housing (1),

• wherein the grease storage chamber (23, 23') is limited by an insert body (25, 25') located in the friction piston (13), and
• wherein the insert body (25) is formed as a largely closed vessel, merely open towards the at least one grease channel (34) with an outlet opening (40).

A frictional damper comprising a substantially circular cylindrical housing (1) and a tappet (2) which is coaxially displaceable inside the housing (1) and extends out of it with one end, another end being provided with an approximately cylindrical friction piston (13), the friction piston (13) having at least one approximately circular cylindrical support segment (18, 19) and bracing flanges (14 to 17) radially extending beyond the support segment (18, 19) at fixed distances, a friction coating (20, 21) made of an elastically resilient material being disposed on the support segment (18, 19) and between the bracing flanges (14 to 17) and being elastically pressed against an inner wall (36) of the housing (1), and a grease storage chamber (23, 23') being formed on the friction piston (13), wherein the grease storage chamber (23, 23') is formed internally of the friction piston (13) and is connected by way of at least one grease channel (34) axially spaced apart from the friction coating (20, 21) and the support segment (18, 19) with a grease chamber (22) formed at the outer circumference of the friction piston (13) at a location spaced apart from the friction coating (20, 21) by at least one of the bracing flanges (14 to 17) and open towards the inner wall (36) of the housing (1),

• wherein the grease storage chamber (23, 23') is limited by an insert body (25, 25') located in the friction piston (13),
• wherein the insert body (25') is formed as a largely closed vessel, merely open towards the at least one grease channel (34) with an outlet opening (40), and
• wherein a conveyor unit is provided in the insert body (25') pressing the grease (35) towards the at least one grease channel (34).