gångjärn

Gångjärn is the Swedish word for hinge. A hinge is a mechanical device used to connect two objects while allowing them to pivot relative to each other. Hinges are commonly used to attach doors to their frames, lids to boxes, and gates to posts. They allow for controlled movement, opening and closing, without fully separating the connected parts.

The basic principle of a hinge involves two plates or leaves connected by a pin or knuckle. One leaf is typically attached to the stationary object, while the other is attached to the moving object. As the pin rotates within the knuckle, the two objects move together in a swinging motion. There are many different types of hinges, each designed for specific applications and load requirements.

Common types include butt hinges, which are the most standard and consist of two rectangular leaves. Strap hinges have long, decorative straps and are often used on gates or heavy doors. Continuous hinges, also known as piano hinges, extend along the entire length of the object, providing strength and even support. Ball bearing hinges are designed to reduce friction and are suitable for heavy-duty applications. Specialized hinges also exist for various purposes, such as concealed hinges that are hidden when the door is closed, or spring-loaded hinges that can close automatically. The material used for hinges varies, with common options including steel, brass, aluminum, and stainless steel, chosen based on durability, corrosion resistance, and aesthetic considerations.