A movable lateral extension pivots between working and rest positions to guide transverse legs on energy guide chains.
Replacing pins and slots with geometric locking surfaces absorbs torque and eliminates wear under tensile forces while allowing self-adjustment.
A lattice hinge with transverse recesses distributes stress through torsion in rigid plastic chain links.
Optimized 30-degree inclination angles and arc-shaped guiding surfaces suppress relative slippage to enhance buckling strength.