foldbar

Foldbar is a term used to describe a bar, rod, or structural element that is designed to fold or collapse for compact storage or transport. In engineering and product design, foldbars are implemented with hinge joints, pivot pins, or telescoping segments that allow the length or angle to change while maintaining structural integrity when locked.

Design and variants: Common forms include straight bars with one or more hinges that fold flat, or multi-segment bars using telescoping tubes. Locking mechanisms such as spring-loaded pins, cam locks, or twist-locks secure the bar in its extended position. Materials range from steel and aluminum to composites, chosen for strength-to-weight and corrosion resistance. Finish and coatings improve durability in outdoor use.

Applications: Foldbars appear in portable equipment such as folding workout bars, camping gear, light stands, camera rigs, and scaffolding components. They are also used in theater and stage settings, where bars may fold to create portable rigging or storage frames.

Considerations: Designers balance stiffness, load capacity, and fatigue life; failure can occur at joints, locking interfaces, or corrosion. Installation and maintenance focus on inspecting hinges, pins, and locking devices, ensuring correct alignment and secure locking before use.

See also: folding furniture, telescoping pole, hinge, latch, scaffold.