The term "one-line hinge" does not refer to a single component but is a general term for a category of rotary joints or hinges with a linear, "I"-shaped appearance. Although design details vary across industries, their core function is consistently "rotation around a single axis with damping or positional locking." In summary, they are primarily used in the following six major application scenarios:
Consumer Electronics
• Opening, closing, and halting (mid-position suspension) of laptop displays relative to the main body
• 180°/360° flip mechanisms in foldable smartphones, tablet cases, and 2-in-1 devices
• Flip-top or bracket structures in micro projectors, portable ultrasound devices, gaming consoles, etc.
Furniture & Home Interiors
• Hinges for cabinets, wardrobes, wine racks, and bathroom mirror cabinets—enabling flush mounting, infinite positioning, and soft-close damping
• Pivot joints in multifunctional furniture such as folding dining tables, wall beds, and height-adjustable TV stands
Automotive & In-Car Systems
• Angle adjustment for dashboard-mounted dashcams, flip-up infotainment screens, and HUD displays
• Damped opening/closing of car fridges, storage compartments, and vanity mirror covers
Industrial & Automation Equipment
• Rotating worktables on production lines, robotic arm joints, and flip-up covers on inspection instruments
• Display hinges in industrial-grade laptops, rugged tablets, and portable testing devices
Display & Retail
• Rotating display platforms for museum cases, supermarket turntables, and digital advertising screens
Medical & Lighting
• Adjustable angles for medical device screens, foldable light arms, and LED desk lamp heads
• Applications requiring lightweight yet highly reliable designs—e.g., portable ultrasound units and endoscope carts
One-sentence summary: Any product structure requiring smooth rotation and infinite-angle suspension within a narrow, linear space may benefit from a one-line hinge.
