Electromechanical friction shock absorber

Electromechanical friction shock absorber (10, 11) comprising a cylindrical shock absorber piston (26);

• a shock absorber body (18) that surrounds the shock absorber piston (26), moves telescopically along the same work axis (X) with the piston (26), and bears the piston (26) from its end part;
• at least two brake shoes (23) which are located in between the shock absorber body (18) and the piston (26) and which move telescopically during operation on the same work axis (X) with the body (18),
• at least one friction element (30) which is located in between the brake shoes (23) and the outer surface of the shock absorber piston (26) ;
• and
• at least one lock ring (36) which bears the shock absorber piston (26) on the shock absorber body (18) and prevents the friction element (30) from getting displaced out of the body (18),
• a step motor (16) for rotating a brake screw (24),
• wherein the first brake shoe (23) has a support bearing (43) suitable for accommodating a brake support (22),
• wherein the second brake shoe (23) has a support bearing (43) suitable for accommodating a threaded brake support (25),
• wherein said brake screw (24) is located such that it passes through a hole (53) of said brake support (22) at its proximal end and through the threaded hole (55) of said threaded brake support (25) at its distal end,
• characterized in that the absorber further comprises a coupling system (19, 20, 21) for coupling the brake screw (24) with the step motor (16), said coupling system comprising a female coupling (19), a male coupling (20) and a coupling washer (21), said coupling washer (21) being disposed rotatably between said male coupling (20) and the brake support (22) for eliminating tensioning occurring in result of an axial change of a step motor axis (M) and a brake screw axis (S) when said brake screw (24) is rotated.