Multihinge

Multihinge, or multi-hinge assembly, refers to a hinge system composed of several hinge elements arranged to create an articulated joint between two members. Each element provides a pivot, and the elements collectively allow greater angular travel, distribute loads more evenly, and permit folding or stacking of a long panel into a compact form. Unlike a single hinge, a multihinge can be configured in a straight line for extended reach or in staggered or offset arrangements to reduce binding and accommodate thick assemblies.

Construction typically involves rigid plates or leaves connected by pins or rivets, and may include bushings, stops, and dampers to limit motion and improve durability. Materials range from steel and stainless steel to aluminum and high-strength polymers, chosen for strength, weight, and corrosion resistance. Tolerances and alignment are important to prevent binding, uneven wear, or misalignment of the moving edge.

Variants include straight multi-hinge runs, offset configurations to clear adjacent structures, and segmented designs that allow selective isolation of sections. The design can be adapted to balance strength, travel, and compactness for a given application.

Applications are diverse and include folding doors, long cabinet lids, hatch covers, folding screens, liftgates, and portable furniture. In aerospace and automotive contexts, multihinge assemblies enable large panels to fold for storage or access while maintaining light weight. In robotics and automation, multi-hinge joints enable continuum-like motion in compact spaces.

Advantages include increased travel, improved load distribution, and modularity; limitations include higher manufacturing cost, more components to service, potential play and wear, and the need for precise installation. The term is used descriptively rather than as a standardized part category.