Information handling system dual axis mono-barrel hinge
A dual axis hinge assembly couples first and second hinges to each other with a central barrel and routes cables across hinge axles with cable channels formed in the axles. The dual axis hinge assembly rotationally couples information handling system housing portions to each other and routes cables between the housing portions distal the barrel by running the cables through a channel formed in each axle of one of the hinges with the cable entering one axle distal the barrel, routing through the axle to a position proximate the barrel, crossing the hinge to enter the other hinge axle proximate the barrel and routing though the other axle to exit distal the barrel.
1. A method for rotationally coupling information handling system housing portions to each other, the method comprising:
coupling first and second hinges to each other with a barrel disposed between the hinges, each hinge having first and second axles interfaced to rotate synchronously by plural gears, each axle having a channel;
coupling the first and second hinges to first and second housing portions; and
routing a cable between the first and second housing portions, the cable routed through one of the first or second hinges, the cable inserting into the first and second channel of the one of the first and second hinges, the cable routing between the first axle channel and second axle channel without passing through any of the plural gears.
2. The method of claim 1 further comprising:
communicating pixel information from the first to the second housing portion through the cable; and
presenting visual images at a display in the second housing portion with the pixel information.
3. The method of claim 1 further comprising:
communicating radio frequency information between the first and second housing portions through the cable; and
wirelessly communicating the radio frequency information at an antenna integrated in the second housing portion.
4. The method of claim 1 wherein routing a cable further comprises:
routing the cable from the first housing portion to the first axle, the cable entering the first axle channel distal the barrel;
inserting the cable into the first axle channel towards the barrel;
exiting the cable from the first axle channel proximate the barrel;
inserting the cable into the second axle channel proximate the barrel to route away from the barrel; and
exiting the cable from the second axle channel distal the barrel to route into the second housing portion.
5. The method of claim 4 further comprising routing a second cable between the first and second housing portions, the second cable routed through the other of the first or second hinges, the second cable inserting into the first and second channel of the other of the first and second hinges.
6. The method of claim 4 wherein coupling first and section hinges to first and second housing portions further comprises:
coupling a connection plate of each first axle to the first housing portion;
coupling a connection plate of each second axle to the second housing portion; and
reinforcing each axle against torsional forces at a joint of each axle with the axle's associated connection plate.
7. The method of claim 6 further comprising rotating the housing portions 360 degrees relative to each other between a closed configuration and a tablet configuration.
8. The method of claim 1 further comprising:
synchronizing rotation of the first and second axles with a gear assembly disposed between the barrel and the first and second axles; and
routing the cable through the first and second channels without passing through the gear assembly.
9. A method for rotationally coupling information handling system housing portions to each other, the method comprising:
coupling first and second hinges to each other with a barrel disposed between the hinges, at least the first hinge having first and second axles coupled to a gear assembly, the gear assembly inside the barrel and the first and second axles extending out of the barrel, the gear assembly synchronizing rotation of the first and second axles, each of the first and second axles having a channel;
coupling the first and second hinges to first and second housing portions with brackets extending from the first and second axles; and
routing a cable between the first and second housing portions through the first hinge, the cable inserting into the channels of the first and second axles proximate the brackets and crossing between the first and second axles without passing through the gear assembly.
10. A method for rotationally coupling information handling system housing portions to each other, the method comprising:
rotationally coupling first and second axles with first and second sets of engaged gears coupled at a first end of the first and second axles;
coupling the first and second axles to the information handling system housing portions with brackets coupled at a second end of the first and second axles;
routing a cable between the first and second sets of gears and the first and second brackets, the cable routed from the bracket of the first axle, through a channel of the first axle, to a channel of the second axle, and through the channel of the second axle to the bracket of the second axle; and
communicating information between the information handling system housing portions through the cable.
11. The method of claim 10 further comprising routing the cable between the first and second axles without passing the cable through any of the gears of the first and second sets of engaged gears.
12. The method of claim 11 further comprising inserting the first and second sets of engaged gears into first and second ends of a barrel.