Portable information handling system hinge with hybrid rotation for distributed torque
A portable information handling system housing rotationally couples housing portions with a dual axis synchronized gear to rotate about parallel spaced axes that define a radius to support folding of a flexible display. Each axis of the synchronized gear couples to a housing portion with a sliding bracket that adjusts length during rotation. Plural pivot arms couple to a main body of the hinge at the first and second axes and to the housing portions to manage spacing of the housing portions during rotation. A sliding member coupled to the main body engages with the plural pivot arms to synchronize rotation of the plural pivot arms and regulate torsional forces related to rotation of the housing portions that can damage a display film folding at the hinge.
1. An information handling system comprising:
a housing having first and second housing portions;
a processor disposed in the housing and operable to execute instructions to process information;
a memory disposed in the housing and operable to store the instructions and information;
a display interfaced with the processor and operable to present the information as visual images; and
a hinge rotationally coupling the first and second housing portions to rotate between closed and tablet positions, the hinge having a main body, the main body having first and second synchronized gears coupled at opposing ends, each of the first and second synchronized gears having first and second axles aligned with first and second parallel spaced axes, each synchronized gear axle coupled to the housing, a sliding member coupled to the main body between the opposing ends, and first and second sets of first and second pivot arms, each of the first and second sets rotationally coupled to the main body and having a cam side surface that engages a cam side surface of the sliding member to translate rotation between the first set of the pivot arms and the second set of pivot arms through the sliding member.
2. The information handling system of claim 1 wherein the display comprises a plastic organic light emitting diode film disposed across both of the first and second housing portions to fold at the hinge.
3. The information handling system of claim 1 further comprising a sliding bracket coupling each synchronized gear to one of the first or second housing portions, the sliding bracket having a support arm rotating with the synchronized gear axle and a bracket that slides relative to the support and fixedly couples to the housing portion.
4. The information handling system of claim 3 wherein the bracket has a slot that engages a pin extending from the support arm, the slot.
5. The information handling system of claim 4 further comprising a torque generator coupled to each synchronized gear and resisting rotation of the first and second axles.
6. The information handling system of claim 1 wherein:
each of the first pivot arms rotationally couples to the main body to rotate about the first axis; and
each of the second pivot arms rotationally couples to the main body to rotate about the second axis.
7. The information handling system of claim 6 wherein:
the cam side surfaces of the first pivot arms align; and
the cam side surfaces of the second pivot arms align.
8. The information handling system of claim 7 wherein:
the first pivot arms couple to the first housing portion; and
the second pivot arms couple to the second housing portion.
9. The system of claim 8 wherein a fixed position of the first pivot arm relative to the first housing portion and first axis defines a sliding position of the sliding bracket.