Flexible motor vehicle drive shaft - is of helical, springy material with sinusoidal coils having supporting smooth flanks

摘要

The flexible shaft made of helical, springy material (4) with a circular or polygonal, especially rectangular, C-shaped or hollow cross-section has coils (1,2,3) connected along lines on the outer surface. The connections are formed of identical, interlocking sinusoidal bends pointing the same way. Adjacent bends have straight flanks supporting each other in a peripheral direction. The sides of the flanks (12) are smooth, supporting each other. USE/ADVNATAGE - Even though the shaft is not straight, rotary movements and torsional stresses are transmitted.