Hingelocked

Hingelocked is a term used to describe a hinge assembly that has been secured in a fixed position, preventing the connected leaves from rotating. This condition can be intentional, such as to hold a lid, door, panel, or access cover in a specific orientation, or the result of a locking mechanism failing or engaging during maintenance or transport.

Locking methods vary. Common approaches include pins or screws that pass through the hinge barrel to lock the knuckles together, detents or latches that set the hinge at a chosen angle, and captive pins or bolts that remain in place unless deliberately removed. Some hinges incorporate friction features, detents, or magnetic or mechanical locks to hold the position without requiring a separate pin. In industrial or aerospace contexts, hingelocked configurations are often used to secure panels during transport or maintenance or to ensure alignment for sealing or safety purposes.

Applications and considerations. Hingelocked hinges appear in doors, cabinets, latching panels, aircraft access panels, industrial equipment, and some furniture where movement needs to be restricted or precisely controlled. When a hinge is hingelocked, it may simplify operation, improve safety, or aid in maintenance by preventing unintended movement. However, locking mechanisms introduce potential points of wear or failure and may require periodic inspection, lubrication, and upkeep to maintain reliable performance.

Related concepts include locking hinges, friction hinges, and removable-pivot hinges, all of which provide varying methods to constrain or control hinge movement.