Systems and methods for securing a fabric cover to an armrest

1. An armrest for a vehicle seat, the armrest comprising:

a frame defining an elongate axis extending along a length of the armrest;

a flexible cover that at least partially surrounds the frame in an installed configuration; and

a cover retention plate arranged adjacent to a distal end of the frame to secure the flexible cover, the cover retention plate including:

a first channel and a second channel arranged approximately parallel to the elongate axis of the frame, each of the first and second channels receiving a respective portion of the flexible cover with the flexible cover in the installed configuration;

a central portion arranged between the first channel and the second channel;

a first lateral portion arranged along an edge of the first channel opposite the central portion;

a second lateral portion arranged along an edge of the second channel opposite the central portion; and

at least one protrusion extending away from at least one of the central portion, the first lateral portion, or the second lateral portion to secure the flexible cover in the installed configuration.

2. The armrest of claim 1 , wherein the at least one protrusion defines an engagement surface at a distal end of the at least one protrusion that is sloped relative to the elongate axis to form a pointed tip.

3. The armrest of claim 1 , wherein the at least one protrusion includes:

a first protrusion extending away from the central portion of the cover retention plate in a first direction transverse to the elongate axis;

a second protrusion extending away from the first lateral portion of the cover retention plate in a second direction transverse to the elongate axis, opposite the first direction; and

a third protrusion extending away from the second lateral portion of the cover retention plate in the second direction.

4. The armrest of claim 3 , wherein the first protrusion is included in a plurality of first protrusions arranged along the central portion of the cover retention plate to extend into the first and second channels and extending away from the central portion of the cover retention plate in the first direction;

the second protrusion is included in a plurality of second protrusions arranged along the first lateral portion of the cover retention plate to extend into the first channel and extending away from the first lateral portion of the cover retention plate in the second direction; and

the third protrusion is included in a plurality of third protrusions arranged along the second lateral portion of the cover retention plate to extend into the second channel and extending away from the second lateral portion of the cover retention plate in the second direction.

5. The armrest of claim 4 , wherein one or more of:

the plurality of first protrusions includes a first set of protrusions with heights, in the first direction, that decrease along an insertion direction that extends from an open end to a closed end of one or more of the first channel or the second channel;

the plurality of second protrusions includes a second set of protrusions with heights, in the second direction, that decrease along the insertion direction; or

the plurality of third protrusions includes a third set of protrusions with heights, in the second direction, that decrease along the insertion direction.

6. The armrest of claim 1 , wherein the at least one protrusion defines a curved profile that extends from the central portion into at least one of the first channel or the second channel to curve away from the distal end of the frame.

7. The armrest of claim 1 , wherein the at least one protrusion includes:

first protrusions extending from the central portion of the cover retention plate into the first channel and the second channel, with heights of the first protrusions transverse to the elongate axis decreasing along an insertion direction of the first channel, from an open end of the first channel to a closed end of the first channel, and decreasing along the second channel along an insertion direction of the second channel, from an open end of the second channel to a closed end of the second channel;

second protrusions extending from the first lateral portion of the cover retention plate into the first channel, opposite the first protrusions, with heights of the second protrusions transverse to the elongate axis decreasing along the insertion direction of the first channel; and

third protrusions extending from the second lateral portion of the cover retention plate into the second channel, opposite the first protrusions, with heights of the third protrusions transverse to the elongate axis decreasing along the insertion direction of the second channel.

8. The armrest of claim 7 , wherein the first and second protrusions are in a first alternating arrangement along opposing sides of the first channel, relative to the insertion direction of the first channel; and

wherein the second and third protrusions are in a second alternating arrangement along opposing sides of the second channel, relative to the insertion direction of the second channel.

9. A cover retention mechanism for securing a fabric or other cover to a vehicle seat component, the cover retention mechanism comprising:

a bracket including a retention feature defining a central portion, a first lateral portion, and a second lateral portion;

a first channel arranged between the central portion and the first lateral portion, and defining a first reference axis extending between a first open end at a distal end of the retention feature and a first terminal end opposite the first open end;

a second channel arranged between the central portion and the second lateral portion, and defining a second reference axis extending between a second open end at the distal end of the retention feature and a second terminal end opposite the second open end;

a first protrusion array extending away from the retention feature along the first channel; and

a second protrusion array extending away from the retention feature along the second channel;

wherein the first and second channels receive a portion of a fabric or other cover so that

the first and second protrusion arrays simultaneously engage the fabric or other cover.

10. The cover retention mechanism of claim 9 , wherein the first reference axis of the first channel and the second reference axis of the second channel are approximately parallel to each other.

11. The cover retention mechanism of claim 9 , each protrusion of a plurality of protrusions of the first and second protrusion arrays defines an engagement surface at a distal end that is sloped, relative to at least one of first and second reference axes and relative to an insertion direction of, respectively, the first or second channel, to form a pointed tip.

12. The cover retention mechanism of claim 11 , wherein a height of each protrusion of the plurality of protrusions of the first protrusion array, relative to a first direction transverse to the first reference axis, increases towards an edge of the protrusion closest to the first terminal end of the first channel; and

wherein a height of each protrusion of the plurality of protrusions of the second protrusion array, relative to the first direction, increases towards an edge of the protrusion closest to the second terminal end of the second channel.

13. The cover retention mechanism of claim 9 , wherein each protrusion in the first protrusion array extends into the first channel; and

wherein each protrusion in the second protrusion array extends into the second channel.

14. The cover retention mechanism of claim 9 , wherein the first protrusion array includes a first protrusion, a second protrusion, and a third protrusion arranged in series along the first channel, the first protrusion having a larger height than the second protrusion, and the second protrusion having a larger height than the third protrusion;

wherein the second protrusion array includes a fourth protrusion, a fifth protrusion, and a sixth protrusion arranged in series along the second channel, the fourth protrusion having a larger height than the fifth protrusion, and the fifth protrusion having a larger height than the sixth protrusion.

15. The cover retention mechanism of claim 14 , wherein the first protrusion is arranged nearer the first open end of the first channel than are the second and third protrusions; and

wherein the fourth protrusion is arranged nearer the second open end of the second channel than are the fifth and sixth protrusions.

16. The cover retention mechanism of claim 9 , wherein the first protrusion array includes a first set of protrusions extending away from the first lateral portion of the retention feature in a first direction and a second set of protrusions extending away from the central portion of the retention feature in an opposing second direction; and

wherein the second protrusion array includes a third set of protrusions extending away from the second lateral portion of the retention feature in the first direction and a fourth set of protrusions extending away from the central portion of the retention feature in the second direction.

17. The cover retention mechanism of claim 16 , wherein the first set of protrusions includes a first protrusion, a second protrusion, and a third protrusion arranged in series along the first lateral portion;

wherein the second set of protrusions includes a fourth protrusion, a fifth protrusion, and a sixth protrusion arranged in series along the central portion; and

wherein, relative to the first reference axis, the first protrusion is arranged axially between the fourth protrusion and the fifth protrusion.

18. The cover retention mechanism of claim 9 , wherein each protrusion in the first protrusion array defines a curved profile that extends initially into the first channel then curves away from the first open end of the first channel; and

wherein each protrusion in the second protrusion array defines a curved profile that extends initially into the second channel then curves away from the second open end of the second channel.

19. The cover retention mechanism of claim 9 , wherein each protrusion in the first and second protrusion arrays is substantially perpendicular to the retention feature.

20. A method of installing a flexible cover on an armrest assembly for use with a vehicle seat, the method comprising:

with a nose portion of a flexible cover turned inside-out, inserting the nose portion into open ends of first and second channels of a cover retention feature that is coupled to a frame of the armrest assembly; and

inverting the nose portion of the flexible cover, with the nose portion received in the first and second channels of the cover retention feature, such that an external surface of the nose portion is facing an exterior of the armrest assembly;

wherein upon inverting the nose portion of the flexible cover, a first array of protrusions extending from the cover retention feature along the first channel and a second array of protrusions extending away from the cover retention feature along the second channel engage the nose portion of the flexible cover to retain the flexible cover in an installed configuration on the armrest assembly.