Hinge assembly for vehicle interior trim component

1. A vehicle interior trim component hinge assembly, comprising:

a shaft rotationally coupled to a first structure;

a passage within a second structure, wherein the shaft passes through the passage to facilitate rotation of the second structure relative to the first structure;

at least one first friction disk disposed about the shaft and comprising a first engagement feature configured to engage the shaft to block rotation of the at least one first friction disk relative to the shaft;

at least one second friction disk rotatably disposed about the shaft and comprising a second engagement feature configured to engage the second structure to block rotation of the at least one second friction disk relative to the passage;

a biasing member configured to urge the first and second friction disks toward one another to establish a friction force that provides rotational resistance between the first and second structures; and

an end cap fixedly coupled to the shaft and comprising a radial protrusion configured to engage a recess within the shaft to secure the end cap to the shaft, wherein the biasing member is disposed between the end cap and the at least one first friction disk or between the end cap and the at least one second friction disk.

2. The vehicle interior trim component hinge assembly of claim 1 , comprising a pin having the shaft and a head keyed to the first structure.

3. The vehicle interior trim component hinge assembly of claim 1 , wherein the first engagement feature comprises an inner protrusion configured to engage the recess to block rotation of the first friction disk relative to the shaft.

4. The vehicle interior trim component hinge assembly of claim 1 , wherein the passage comprises a recess and the second engagement feature comprises an outer protrusion configured to engage the recess to block rotation of the second friction disk relative to the shaft.

5. The vehicle interior trim component hinge assembly of claim 1 , comprising a plurality of first friction disks and a plurality of second friction disks, wherein the first and second friction disks alternate along the shaft.

6. The vehicle interior trim component hinge assembly of claim 1 , wherein the biasing member comprises a coil spring disposed about the shaft and configured to apply a compression force to the second friction disk.

7. The vehicle interior trim component hinge assembly of claim 6 , wherein the end cap is configured to retain the coil spring.

8. The vehicle interior trim component hinge assembly of claim 1 , comprising a detent assembly configured to hold the second structure in a detent position relative to the first structure, wherein the detent assembly comprises:

a first detent disk rotationally coupled to the shaft and comprising a first detent feature;

a second detent disk rotationally coupled to the passage and comprising a second detent feature, wherein contact between the first detent feature and the second detent feature urges the second structure into the detent position.

9. A vehicle interior trim component hinge assembly, comprising:

a rotatable component comprising a passage;

a shaft disposed through the passage of the rotatable component and fixedly coupled to the rotatable component;

at least one first friction disk rotationally coupled to the shaft and comprising an outer protrusion configured to engage a recess in the rotatable component to block rotation of the at least one first friction disk relative to the passage;

at least one second friction disk rotationally coupled to the rotatable component and disposed about the shaft, wherein the at least one second friction disk comprises an inner protrusion configured to engage a recess in the shaft to block rotation of the at least one second friction disk relative to the shaft;

a biasing member configured to urge the first and second friction disks toward one another to establish a friction force that provides resistance to rotation of the rotatable component about the shaft; and

an end cap comprising an opening rotatably supporting the shaft and a radial protrusion configured to engage the recess in the shaft to secure the end cap and the shaft to the passage, wherein the biasing member is disposed between the end cap and the at least one first friction disk or between the end cap and the at least one second friction disk.

10. The vehicle interior trim component hinge assembly of claim 9 , comprising a plurality of first friction disks and a plurality of second friction disks, wherein the first and second friction disks alternate along the shaft.

11. The vehicle interior trim component hinge assembly of claim 9 , wherein the end cap is configured to retain the first and second friction disks.

12. The vehicle interior trim component hinge assembly of claim 9 , wherein the rotatable component comprises an armrest.

13. A method of manufacturing a vehicle interior trim component hinge assembly, comprising:

forming a torsion assembly by coupling a first friction disk to a shaft, disposing a second friction disk rotationally about the shaft adjacent to the first friction disk, and biasing the first and second friction disks toward one another to establish a friction force, wherein biasing the first and second friction disks toward one another comprises disposing a coil spring about the shaft and retaining the coil spring with an end cap; and

disposing the torsion assembly within a passage of a rotatable component such that an outer protrusion of the second friction disk engages a recess of the rotatable component to rotationally couple the second friction disk to the shaft, wherein the friction force provides resistance to rotation of the rotatable component about the shaft.

14. The method of claim 13 , wherein the end cap comprises a radial protrusion configured to engage a recess within the shaft to secure the end cap to the shaft.

15. The method of claim 13 , wherein rotationally coupling the first friction disk to the shaft comprises engaging an inner protrusion of the first friction disk with a recess of the shaft.

16. The method of claim 13 , comprising rotationally coupling the shaft to a base to facilitate rotation of the rotatable component relative to the base.