Friction hinge

A method of operating a friction hinge comprising a stub substrate rotatably coupled to a finger substrate, the method comprising:

• positioning the stub substrate at a first angular orientation relative to the finger substrate, wherein the stub substrate comprises a first stub and an adjacent second stub extending from a stub substrate, and the finger substrate comprises a first finger extending from the finger substrate between the first stub and the second stub, the first finger comprising a distal contacting face that is biased into contact with a first biasing face of the first stub, and the finger substrate comprising a second finger adjacent to and axially spaced from the first finger and extending from the finger substrate between the first stub and the second stub, the second finger comprising a distal contacting face that is biased into contact with a second biasing face of the second stub, wherein a pin extends through a stub aperture in the first stub, a finger aperture in the first finger, a finger aperture in the second finger, and a stub aperture in the second stub;
• and
• repositioning the stub substrate to a second angular orientation relative to the finger substrate, wherein frictional contact between at least the distal contacting face of the first finger and the first biasing face of the first stub and between the distal contacting face of the second finger and the second biasing face of the second stub causes the stub substrate to maintain the second angular orientation relative to the finger substrate.

A computing device, comprising:

• a first substrate;
• a second substrate moveably coupled to the first substrate via a friction hinge, the friction hinge comprising:
• a first stub and an adjacent second stub extending from a stub substrate;
• a first finger extending from a finger substrate between the first stub and the second stub, the first finger comprising a distal contacting face that is biased into contact with a first biasing face of the first stub;
• a second finger adjacent to and axially spaced from the first finger and extending from the finger substrate between the first stub and the second stub, the second finger comprising a distal contacting face that is biased into contact with a second biasing face of the second stub;
• and
• a pin extending through a stub aperture in the first stub, a finger aperture in the first finger, a finger aperture in the second finger, and a stub aperture in the second stub.

A method of assembling a friction hinge, the method comprising:

• providing a stub substrate comprising a first stub and an adjacent second stub extending from the stub substrate;
• providing a finger substrate comprising a first finger and an adjacent second finger extending from the finger substrate, the first finger comprising a distal contacting face and a ramping surface between its distal contacting face and the finger substrate, and the second finger comprising a distal contacting face and a ramping surface between its distal contacting face and the finger substrate;
• inserting the first stub at a base of the ramping surface of the first finger and the second stub at a base of the ramping surface of the second finger;
• sliding the first stub along the ramping surface of the first finger to its distal contacting face and the second stub along the ramping surface of the second finger to its distal contacting face, thereby biasing the first finger's distal contacting face against the first stub and the second finger's distal contacting face against the second stub;
• aligning a first stub aperture in the first stub, a first finger aperture in the first finger, a second finger aperture in the second finger, and a second stub aperture in the second stub;
• and
• inserting a pin through the first stub aperture, the first finger aperture, the second finger aperture, and the second stub aperture.