Device for adjusting position of vehicle headrest

Patent metadata

Field	Value
Publication number	US-12508965-B2
Application number	US-202418613058-A
Country	US
Kind code	B2
Filing date	Mar 21, 2024
Priority date	Nov 28, 2023
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

In an embodiment a headrest position adjustment system includes a housing mounted on a front surface portion of a high-back board, a headrest mounted on the housing, the headrest being capable of moving forward and backward, a fixing frame comprising slide holes in opposite side portions of the fixing frame, the fixing frame being mounted inside the housing, a first motor mounted on the fixing frame, the first motor having a first lead screw facing forward as an output shaft, and a side bracket disposed on each of the opposite side portions of the fixing frame and connected to the headrest, the side bracket being fastened to a slide hole such that the side bracket is capable of being moved forward and backward.

First claim

What is claimed is:

1 . A headrest position adjustment apparatus comprising:
a housing mountable on a front surface portion of a high-back board; a headrest mountable on the housing such that the headrest is capable of being slidably moved forward and backward; a fixing frame comprising slide holes located in opposite side portions of the fixing frame, the fixing frame being mounted inside the housing; a first motor mounted on the fixing frame, the first motor having a first lead screw facing forward as an output shaft; side brackets, each of the side brackets disposed on a respective opposite side portion of the fixing frame and connectable to the headrest, wherein each side bracket is fastened to a respective slide hole such that the side brackets are capable of being moved forward and backward; a front link having a lower end portion and an upper end portion, wherein the lower end portion is hinge-fastened to opposite sides of the fixing frame, and wherein the upper end portion is fastened to a respective front end portion of a respective side bracket such that the front link is capable of being rotated forward and backward; a rear link having a lower end portion and an upper end portion, wherein the lower end portion is hinge-fastened to the fixing frame, and wherein the upper end portion is fastened to a respective rear end portion of the respective side bracket such that the rear link is capable of being rotated forward and backward; and a slider fastened to the first lead screw such that the slider is capable of being moved forward and backward, wherein the slider has a front end portion connected to the front link.

2 . The headrest position adjustment apparatus of claim 1 , wherein each front end portion of the side bracket comprises a push-pull plate connectable to the headrest, and wherein the push-pull plate is bent.

3 . The headrest position adjustment apparatus of claim 1 , further comprising slide pins, wherein each slide pin is inserted into a respective slide hole of the fixing frame such that the slide pin is capable of being moved forward and backward, wherein each slide pin is fastened to a lower position of a respective rear end portion of the respective side bracket.

4 . The headrest position adjustment apparatus of claim 1 , wherein each side bracket comprises a first slot into which a respective front pin fastened to the upper end portion of the front link is inserted such that the respective front pin is capable of being moved upward and downward.

5 . The headrest position adjustment apparatus of claim 4 , further comprising link connectors, each link connector disposed on respective side portions of the respective side bracket, wherein each link connector is configured to prevent separation of the respective front pin and the respective rear pin.

6 . The headrest position adjustment apparatus of claim 5 , further comprising:
lower pins, each lower pin inserted into and fastened to a lower portion of each link connector, and third slots, each third slot into which the respective lower pin is inserted such that the lower pin is capable of being moved upward and downward, wherein each third slot is arranged on a lower position of the respective front end portion of the respective side bracket.

7 . The headrest position adjustment apparatus of claim 4 , wherein each side bracket comprises a second slot into which a respective rear pin fastened to the upper end portion of the rear link is inserted such that the respective rear pin is capable of being moved upward and downward.

8 . The headrest position adjustment apparatus of claim 7 , further comprising link connectors, each link connector disposed on respective side portions of the respective side bracket, wherein each link connector is configured to prevent separation of the respective front pin and the respective rear pin.

9 . The headrest position adjustment apparatus of claim 8 , further comprising:
respective lower pins, each lower pin inserted into and fastened to a lower portion of each link connector, and third slots, each third slot into which the respective lower pin is inserted such that the lower pin is capable of being moved upward and downward, wherein each third slot is arranged on a lower position of the respective front end portion of the respective side bracket.

10 . The headrest position adjustment apparatus of claim 1 , wherein the front link comprises a passage hole for the slider so that the slider is movable forward and backward along the first lead screw.

11 . The headrest position adjustment apparatus of claim 10 , wherein the slider comprises a body portion having an arm screw that is fastened to the first lead screw such that the arm screw is capable of being moved forward and backward.

12 . The headrest position adjustment apparatus of claim 11 , wherein the slider comprises guide pins, each guide pin located on a respective side portion of the body portion and fastened to the front link such that each guide pin is capable of being moved upward and downward.

13 . The headrest position adjustment apparatus of claim 12 , wherein the front link comprises guide grooves in which the guide pins of the slider are inserted so that the guide pins are capable of being moved upward and downward.

14 . The headrest position adjustment apparatus of claim 1 , wherein the fixing frame comprises a rear surface portion of a vertical plate, wherein a connection bracket is mounted on the rear surface portion, and wherein the connection bracket is connectable to a headrest height adjustment apparatus that is mounted inside the high-back board.

15 . The headrest position adjustment apparatus of claim 14 , wherein the headrest height adjustment apparatus comprises:
an upper bracket and a lower bracket mounted inside the high-back board, a pair of guide pipes connected between the upper bracket and the lower bracket, a lifting plate fastened to the connection bracket and also fastened to the guide pipes such that the lifting plate is capable of being lifted, and a second motor mounted on the lower bracket so as to drive the lifting plate.

16 . The headrest position adjustment apparatus of claim 15 , wherein an arm screw body is formed on a rear surface portion of the lifting plate, and wherein a second lead screw fastened to the arm screw body is mounted on an output portion of the second motor such that the second lead screw faces upward.

17 . A headrest position adjustment apparatus comprising:
a fixing frame comprising slide holes located in opposite side portions of the fixing frame; a first motor mounted on the fixing frame, the first motor having a first lead screw facing forward; side brackets, each of the side brackets disposed on a respective opposite side portion of the fixing frame and connectable to a headrest, wherein each side bracket is fastened to a respective slide hole such that each side bracket is capable of being moved forward and backward; a front link having a lower end portion and an upper end portion, wherein the lower end portion is hinge-fastened to opposite sides of the fixing frame, and wherein the upper end portion is fastened to front end portions of the side brackets such that the front link is capable of being rotated forward and backward; a rear link having a lower end portion and an upper end portion, wherein the lower end portion is hinge-fastened to the fixing frame, and wherein the upper end portion is fastened to rear end portions of the side brackets such that the rear link is capable of being rotated forward and

Assignees

• Kia Corp
• Hyundai Motor Co Ltd
• Seoyoncnf
• Hyundai Transys Inc

Inventors

• Yu Sang Uk
• Kim Sang Ho
• Lee Seung Young
• Lee Tae Hoon
• Namgoong Jun
• Shin Yong Jun
• Kim Won Kee
• Kim Hyun
• Lee Jun Ho

Classifications

• B60N2/806

  movable or adjustable · CPC title

• B60N2/809

  vertically slidable · CPC title

• B60N2/821

  with continuous positioning · CPC title

• B60N2/862

  with means for maintaining a desired position when the seat-back is adjusted, e.g. parallelogram mechanisms · CPC title

• B60N2/865 Primary

  providing a fore-and-aft movement with respect to the occupant's head · CPC title