Friction module, friction hinge, and adjustable headrest including the friction module and/or friction hinge
US-10960801-B2 · Mar 30, 2021 · US
US11926249B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11926249-B2 |
| Application number | US-202217669000-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 10, 2022 |
| Priority date | Feb 10, 2022 |
| Publication date | Mar 12, 2024 |
| Grant date | Mar 12, 2024 |
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A system may include an adjustable headrest assembly. The adjustable headrest assembly may include a headrest center bracket, a left vertical side plate track, a left headrest side plate assembly including a left headrest side plate, a right vertical side plate track, and a right headrest side plate assembly including a right headrest side plate. The left headrest side plate may be configured to move up and down relative to the left vertical side plate track based on the engagement of the left headrest side plate assembly with the left vertical side plate track. The right headrest side plate may be configured to move up and down relative to the right vertical side plate track based on the engagement of the right headrest side plate assembly with the right vertical side plate track.
Opening claim text (preview).
What is claimed is: 1. A system, comprising: an adjustable headrest assembly, comprising: a headrest center bracket; a left vertical side plate track positioned at a left side of the headrest center bracket; a left headrest side plate assembly comprising a left headrest side plate, the left headrest side plate assembly engaged with the left vertical side plate track, wherein the left headrest side plate is configured to move up and down relative to the left vertical side plate track based on the engagement of the left headrest side plate assembly with the left vertical side plate track, wherein the left headrest side plate is configured to rotate fore and aft about an axis positioned along an edge of the head rest center bracket, wherein the left headrest side plate assembly further comprises: a left friction clamp pin attached to the left headrest side plate; a left friction clamp rotatably engaged with the left friction clamp pin such that the left headrest side plate is able to rotate fore and aft about the axis; a left torque block attached to the left friction clamp; a left roller plate attached to the left torque block; and at least one left roller positioned between the left roller plate and the left torque block, wherein the at least one left roller engages with the left vertical side plate track such that the left headrest side plate is able to move up and down relative to the headrest center bracket; a right vertical side plate track positioned at a right side of the headrest center bracket; and a right headrest side plate assembly comprising a right headrest side plate, the right headrest side plate assembly engaged with the right vertical side plate track, wherein the right headrest side plate is configured to move up and down relative to the right vertical side plate track based on the engagement of the right headrest side plate assembly with the right vertical side plate track, wherein the right headrest side plate is configured to rotate fore and aft about another axis positioned along another edge of the head rest center bracket, wherein the right headrest side plate is configured to rotate fore and aft independently of the left headrest side plate being configured to rotate fore and aft, wherein the right headrest side plate assembly further comprises: a right friction clamp pin attached to the right headrest side plate; a right friction clamp rotatably engaged with the right friction clamp pin such that the right headrest side plate is able to rotate fore and aft about the other axis; a right torque block attached to the right friction clamp; a right roller plate attached to the right torque block; and at least one right roller positioned between the right roller plate and the right torque block, wherein the at least one right roller engages with the right vertical side plate track such that the right headrest side plate is able to move up and down relative to the headrest center bracket. 2. The system of claim 1 , wherein the left headrest side plate assembly further comprises: a left headrest side plate doubler attached to the left headrest side plate and the left friction clamp pin, wherein the at least one left roller comprises two left rollers; wherein the right headrest side plate assembly further comprises: a right headrest side plate doubler attached to the right headrest side plate and the right friction clamp pin, wherein the at least one right roller comprises two right rollers. 3. The system of claim 1 , wherein the adjustable headrest assembly further comprises a mounting plate assembly comprising a mounting plate, the mounting plate positioned behind the headrest center bracket, wherein the headrest center bracket is configured to rotate about a fore-aft axis positioned at a central location of the headrest center bracket, the fore-aft axis extending laterally forward and aft between the mounting plate and the headrest center bracket, wherein the left headrest side plate and the right headrest side plate rotate with the headrest center bracket. 4. The system of claim 3 , wherein the mounting plate assembly further comprises: a friction pivot assembly allowing the headrest center bracket to rotate relative to the mounting plate. 5. The system of claim 4 , wherein the mounting plate assembly further comprises: at least one rotation stop opening; wherein the headrest center bracket has at least one rotation stop, wherein each of the at least one rotation stop extends into one of the at least one rotation stop opening such that an amount of rotation of the headrest center bracket relative to the mounting plate is limited. 6. The system of claim 4 , wherein the friction pivot assembly comprises: a rotational pin extending through and/or between the headrest center bracket and the mounting plate, the rotational pin allowing the headrest center bracket to rotate relative to the mounting plate; a first washer positioned against the headrest center bracket and around the rotational pin; a second washer positioned against the first washer and around the rotational pin; a third washer positioned against the second washer and around the rotational pin; a spring positioned against the third washer and positioned around the rotational pin; a fourth washer positioned between the spring and the mounting plate and positioned around the rotational pin; a fifth washer positioned against the mounting plate and around the rotational pin; and an e-clip positioned against the fifth washer and at least partially around the rotational pin. 7. The system of claim 3 , wherein the mounting plate has a center position detent, wherein the mounting plate assembly further comprises: a detent spring attached to the headrest center bracket and configured to slide along a surface of the mounting plate as the headrest center bracket rotates relative to the mounting plate, wherein the detent spring is configured to reside in the center position detent when a rotational position of the headrest center bracket is centered. 8. The system of claim 3 , wherein the adjustable head rest assembly further comprises a seatback mount plate having at least one vertical track, wherein the mounting plate assembly further comprises: at least one roller assembly, each of the at least one roller assembly comprising: a roller plate attached to the mounting plate; and at least one roller positioned between the roller plate and the mounting plate, wherein the at least one roller engages with one of the at least one vertical track of the seatback mount plate such that the mounting plate is able to move up and down relative to the seatback mount plate. 9. The system of claim 8 , wherein the at least one vertical track comprises two vertical tracks, wherein the at least one roller assembly comprises two roller assemblies. 10. A system, comprising: an adjustable headrest assembly, comprising: a headrest center bracket; a left vertical side plate track positioned at a left side of the headrest center bracket; a left headrest side plate assembly comprising a left headrest side plate, the left headrest side plate assembly engaged with the left vertical side plate track, wherein the left headrest side plate is configured to move up and down relative to the left vertical side plate track based on the engagement of the left headrest side plate assembly with the left vertical side plate track; a right vertical side plate track positioned at a right side of the headrest center bracket; a right headrest side plate assembly comprising a right headrest side plate, the right headrest side plate assembly engaged with the right vertical side plate track, wherein the right headrest s
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