The description relates to devices that include hinged portions and controlling rotation of the portions. One example can include a display that is configured to rotate relative to an axis. The example can also include a clutch assembly interposed between first and second planet gear assemblies posi
The description relates to devices that include hinged portions and controlling rotation of the portions. One example can include a display that is configured to rotate relative to an axis. The example can also include a clutch assembly interposed between first and second planet gear assemblies positioned along the axis. The first and second planet gears configured to multiply resistance to rotation around the axis that is supplied by the clutch assembly.
대표청구항▼
1. A device, comprising: a display that is configured to rotate relative to opposing first and second display shafts; and,a clutch assembly interposed between first and second planet gear assemblies positioned on the first and second display shafts and that are coupled to the display via a shared ce
1. A device, comprising: a display that is configured to rotate relative to opposing first and second display shafts; and,a clutch assembly interposed between first and second planet gear assemblies positioned on the first and second display shafts and that are coupled to the display via a shared central mount where clutch engagement locks the display relative to the opposing first and second display shafts and clutch disengagement allows rotation of the display relative to the opposing first and second display shafts, the clutch assembly comprising first and second selectively engageable clutch elements, at least one slip element, a wedge adjuster, and a wedge housing constrained along a length of a clutch shaft that is parallel to the first and second display shafts. 2. The device of claim 1, wherein the shared central mount comprises an anti-rotation constraint. 3. The device of claim 2, wherein the anti-rotation constraint is configured to allow radial movement of the first and second planet gear assemblies but prevent rotation of the clutch assembly and the first and second planet gear assemblies around the first and second display shafts. 4. The device of claim 1, wherein the at least one slip element comprises multiple slip elements and wherein the clutch assembly further comprises one or more conical spring washers constrained along the length of the clutch shaft. 5. The device of claim 4, wherein the wedge adjuster has a varying thickness between an open end and a closed end such that an extent to which the one or more conical spring washers are compressed can be adjusted by moving the wedge adjuster in the wedge housing orthogonally to the length of the clutch shaft. 6. The device of claim 4, wherein the wedge adjuster has a varying thickness such that an extent to which the one or more conical spring washers are compressed can be adjusted by moving the wedge adjuster in the wedge housing orthogonally to the length of the clutch shaft. 7. The device of claim 1, wherein the clutch shaft includes first and second sun gears at opposing ends of the clutch shaft. 8. The device of claim 7, wherein the first sun gear engages a first set of planet gears associated with the first planet gear assembly and the second sun gear engages a second set of planet gears associated with the second planet gear assembly. 9. A device comprising: a display that is configured to rotate relative to opposing first and second display shafts; and,a clutch assembly interposed between first and second planet gear assemblies positioned on the first and second display shafts and that are coupled to the display via a shared central mount where clutch engagement locks the display relative to the opposing first and second display shafts and clutch disengagement allows rotation of the display relative to the opposing first and second display shafts, the clutch assembly comprising both first and second selectively engageable clutch elements and also comprising at least one slip element, the first and second selectively engageable clutch elements and the at least one slip element constrained along a length of a clutch shaft that is parallel to the first and second display shafts, the first clutch element fixed with respect to the clutch shaft and the second clutch element rotatable and where the at least one slip element is configured to rotate under torsional loading before the second clutch element rotates in an instance where the first and second selectively engageable clutch elements are engaged. 10. A device, comprising: a display that is configured to rotate relative to opposing first and second display shafts; and,a clutch assembly interposed between first and second planet gear assemblies positioned on the first and second display shafts and that are coupled to the display via a shared central mount where clutch engagement locks the display relative to the opposing first and second display shafts and clutch disengagement allows rotation of the display relative to the opposing first and second display shafts, the clutch assembly including a wedge adjuster constrained along a length of a clutch shaft that is parallel to the first and second display shafts. 11. The device of claim 10, further comprising one or more conical spring washers constrained along the length of the clutch shaft, wherein the wedge adjuster has a horseshoe shape and a stepped thickness between an open end and a closed end such that an extent to which the one or more conical spring washers are compressed can be adjusted by incrementally moving the horseshoe shaped wedge adjuster orthogonally to the length of the clutch shaft. 12. A device, comprising: a display that is configured to rotate relative to a display shaft; and,a clutch assembly that includes a sun gear configured to engage a planet gear assembly positioned on the display shaft and that is coupled to the display, wherein clutch engagement locks the display relative to the display shaft and clutch disengagement allows rotation of the display relative to the display shaft, the planet gear assembly including multiple planet gears, at least one planet gear having a first tooth width that is different from a second tooth width of another planet gear. 13. A device, comprising: a display that is configured to rotate relative to a display shaft; and,a clutch assembly that includes a clutch shaft that is parallel to the display shaft but not co-extensive with the display shaft, the clutch assembly comprising a first clutch element secured relative to the display, a planet gear assembly with a planet carrier secured relative to the clutch shaft, and a sun gear secured relative to a second clutch element that is configured to selectively engage the first clutch element. 14. The device of claim 13, further comprising a motor that drives the clutch assembly via an actuator. 15. The device of claim 14, further comprising a clutch controller configured to power the motor to control relative positions of components of the clutch assembly. 16. The device of claim 15, further comprising a single flexible printed circuit that extends from the clutch controller to the motor to enable the clutch controller to power the motor. 17. The device of claim 15, further comprising sensors positioned proximate to the clutch assembly to provide an indication to the clutch controller relating to the relative positions of the components of the clutch assembly. 18. The device of claim 17, wherein the sensors are positioned proximate to the actuator to provide indirect information about the relative positions of the components of the clutch assembly. 19. The device of claim 17, wherein the sensors are positioned proximate to the components of the clutch assembly to provide direct information about the relative positions of the components. 20. The device of claim 17, wherein the sensors comprise optical sensors. 21. A device, comprising: a display that is configured to rotate relative to a display shaft; and,a clutch assembly including a clutch shaft that is parallel to the display shaft but not co-extensive with the display shaft, the clutch assembly comprising a first clutch element secured relative to the display, at least one slip element constrained along a length of the clutch shaft, a planet gear assembly with a planet carrier secured relative to the clutch shaft, and a sun gear secured relative to a second clutch element. 22. The device of claim 21, wherein the first clutch element is fixed and the second clutch element is rotatable. 23. The device of claim 21, further comprising a second planet gear assembly secured to the display, wherein the planet gear assembly and the second planet gear assembly comprise sets of planet gears supported by annular brackets secured to the display. 24. The device of claim 23, wherein the annular brackets are secured to the display via a shared central mount. 25. The device of claim 23, wherein the annular brackets are secured to the display via an anti-rotation constraint.
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