Shock absorber for motor-cycle for scrambling - has hydraulic cylinder combined with high pressure gas bottle for absorbing rebound shocks

摘要

The motor cycle for motocross sport is fitted with a shock absorber consisting of a hydraulic cylinder (1) connected to a spherical bottle (6). The spherical bottle is divided into two regions by a flexible diaphragm (5) with high pressure gas contained in the side remote from the hydraulic cylinder. Under a shock load, oil (4) is forced into the bottle (6) to compress the gas (4') and through the by-pass orifice (9) the non-return valve (8) and piston orifices (32). On the return stroke oil is forced out of the bottle by the gas pressure but can only flow through teh by-pass orifice. This reduces the piston speed and absorbs the shock of the rebound.