Alulrögzített

Alulrögzített is a Hungarian term used to describe a mounting or fixing method in which a component, device, or fixture is attached from the underside to a supporting structure. The word is formed from alul (from below) and rögzített (fixed or secured), and it indicates the orientation of attachment rather than a distinct technical standard.

The term is commonly used across fields such as mechanical engineering, construction, furniture assembly, and electronics to specify that the attachment points are on the bottom side of the object or assembly. It is often contrasted with felülrögzített (top-mounted) and oldalrögzített (side-mounted). The exact interpretation depends on the technical context and the component in question.

Choosing an alulrögzített mounting can influence several design factors, including load transfer and moment distribution, service accessibility, sealing and protection from environmental exposure, and vibration behavior. For example, a bracket or panel may be bolted to a base plate from below, or a fixture may be attached to a frame by fasteners located on the underside. In practice, the suitability of bottom-side fixation is determined by the overall design requirements, tolerances, and applicable standards or manufacturer specifications.

As a descriptive term, alulrögzített does not denote a unique engineering principle but rather a mounting orientation. Designers and engineers will specify the exact details—such as fastener type, placement, and clearance—within the context of the product or project. See also: felülrögzített, oldalrögzített, rögzítés.