héjrugó

A héjrugó is a type of elastic component used in some mechanical systems, particularly in older Hungarian agricultural machinery and vehicles. The term "héjrugó" translates roughly to "shell spring" or "cup spring" in English, hinting at its characteristic construction. It is essentially a metal disk or ring with a specific shape that allows it to deform elastically under load, providing a springing action.

These springs are typically made from hardened steel and are often used in applications where a compact and robust spring is required. Unlike coil springs, which are wound, héjrugó are stamped or formed from sheet metal. They can be used individually or stacked in series or parallel to achieve desired spring rates and travel. The design allows for significant force to be generated within a small space.

Héjrugók were commonly found in clutch mechanisms, brake systems, and suspension components of historical machinery. Their durability and resistance to fatigue under specific operating conditions made them a suitable choice for these applications. While modern engineering has introduced a variety of alternative spring designs, the héjrugó remains a recognizable element in the history of mechanical engineering, particularly within its original context of use.