Torque Hinge – Definition, Design, and Applications
A torque hinge is a hinge mechanism engineered to provide controlled rotational resistance, enabling smooth motion and stable positioning without external locks or support hardware. Torque hinges are widely used in applications where controlled movement, holding force, and consistent user experience are critical.
This guide explains what torque hinges are, how they work, key design considerations, typical applications, and how to select the right torque hinge for your product.
What Is a Torque Hinge?
A torque hinge is a hinge designed to generate resistive torque during rotation, allowing a lid, panel, or display to move smoothly while holding position at a desired angle. The applied torque counteracts gravity and external forces, preventing uncontrolled movement.
Torque hinges are often used as positioning hinges, providing controlled resistance throughout the rotation range without requiring additional locking mechanisms.
How Torque Hinges Work
Torque hinges work by generating internal friction or mechanical resistance within the hinge assembly. As the hinge rotates, internal components create a calibrated torque that resists motion and stabilizes the attached component.
Torque Generation Methods
- Friction washers or discs
- Spring-loaded interfaces or preload mechanisms
Torque Hinge vs Friction Hinge
A torque hinge emphasizes controlled resistance and holding force, often engineered for predictable, repeatable torque performance.
A friction hinge relies on frictional resistance to provide smooth motion and positioning, sometimes with less precise torque control.
Key Design Considerations for Torque Hinges
Torque Value and Symmetry
Accurate torque specification ensures stable positioning and balanced motion throughout the hinge rotation.
Holding Performance and Stability
The hinge must maintain position under load without drift or sudden movement.
Materials and Surface Finishes
Material selection and surface treatments affect durability, wear resistance, and long-term torque consistency.
Applications of Torque Hinges
Consumer Electronics
Used in laptops, monitors, tablets, and display stands requiring smooth and stable positioning.
Medical Equipment
Commonly applied in diagnostic equipment, adjustable arms, and medical display systems.
Automotive Interiors
Applied in infotainment displays, storage compartments, and adjustable interior panels.
Types of Torque Hinges
Torque hinges are available in various configurations to suit different functional requirements.
Common Torque Hinge Types
- Constant torque hinges
- Adjustable torque hinges
- One-way torque hinges
- Detent torque hinges
- Damping torque hinges
- Custom-engineered torque hinges
How to Choose the Right Torque Hinge
Selecting the right torque hinge starts with understanding application requirements.
- Determine component weight and center of gravity
- Define required torque and motion behavior
- Consider environmental and usage conditions
- Confirm available space and mounting orientation
- Evaluate lifecycle and durability requirements
FAQ – Torque Hinge Questions
What is a torque hinge?
A torque hinge is a hinge that provides controlled rotational resistance to hold a component at a desired angle.
How is a torque hinge different from a friction hinge?
Torque hinges focus on precise torque control, while friction hinges emphasize smooth resistance and flexible positioning.
Where are torque hinges commonly used?
They are commonly used in electronics, medical devices, automotive interiors, and industrial equipment.
Can torque hinges be customized?
Yes. Torque hinges can be customized for torque value, geometry, materials, and application-specific requirements.