Roolivõlli

Roolivõlli, often translated as steering shaft or steering column, is a fundamental component of a vehicle's steering system. Its primary function is to connect the steering wheel to the rest of the steering mechanism, which ultimately controls the direction of the vehicle's wheels. The roolivõlli transmits the rotational motion of the steering wheel to the steering rack or gearbox.

Typically, the roolivõlli is a sturdy shaft made of metal, designed to withstand the forces applied during steering. In modern vehicles, it is often a multi-piece assembly incorporating universal joints or flexible couplings. These features allow for slight misalignments between the steering wheel and the steering mechanism and also play a crucial role in safety.

A significant safety feature integrated into many roolivõlli designs is a collapsible mechanism. In the event of a frontal collision, this mechanism is engineered to compress or deform, absorbing some of the impact energy and reducing the risk of the steering column penetrating the passenger compartment and injuring the driver. Many roolivõlli also incorporate adjustments for tilt and reach, allowing drivers to set a comfortable and ergonomic position for the steering wheel. This adjustability enhances driver comfort and control. The precise design and complexity of the roolivõlli can vary significantly depending on the vehicle's make, model, and year of manufacture, reflecting advancements in automotive engineering and safety standards.