Headrest device for vehicle

Patent metadata

Field	Value
Publication number	US-12257938-B2
Application number	US-202318118314-A
Country	US
Kind code	B2
Filing date	Mar 7, 2023
Priority date	Sep 19, 2022
Publication date	Mar 25, 2025
Grant date	Mar 25, 2025

Abstract

Disclosed is a headrest device for a vehicle. The headrest device may include a stationary headrest portion coupled to a seatback of the vehicle and formed to extend upwards. The stationary headrest portion may be located at a rear of a head of an occupant. The headrest device may include a movable headrest portion coupled to the stationary headrest portion so as to be slidable in a vertical direction, the movable headrest portion may be located in front of the stationary headrest portion. The headrest device may include an actuator including a first side coupled to the fixed part, and a second side coupled to the movable headrest portion. The actuator may be configured to cause the movable headrest portion to slide in the vertical direction.

First claim

What is claimed is:

1. A headrest device for a vehicle, the headrest device comprising:
a stationary headrest portion coupled to a seatback of the vehicle and formed to extend upwards, the stationary headrest portion being located at a rear of a head of an occupant;
a movable headrest portion coupled to the stationary headrest portion so as to be slidable in a vertical direction, the movable headrest portion being located in front of the stationary headrest portion; and
an actuator comprising:
a first side coupled to the stationary headrest portion, and
a second side coupled to the movable headrest portion,

wherein the actuator is configured to cause the movable headrest portion to slide in the vertical direction,
wherein the actuator further comprises:
a driving motor comprising a rotation shaft, wherein the driving motor is coupled to the stationary headrest portion, and wherein the driving motor is configured to rotate the rotation shaft;
a lead screw coupled to the rotation shaft of the driving motor and formed to extend in the vertical direction; and
a carrier comprising:
a first side coupled to the lead screw and configured to move in the vertical direction according to rotation of the lead screw, and
a second side coupled to the movable headrest portion, and

wherein the actuator further comprises a motor cover coupled to the stationary headrest portion and formed to at least partially cover an upper surface of the driving motor on which the lead screw is disposed, the motor cover comprising an opening through which the lead screw penetrates.

2. The headrest device according to claim 1 , wherein the actuator further comprises a power supply coupled to the driving motor and configured to receive at least one of:
power from an external power source, or
a control signal for the driving motor.

3. The headrest device according to claim 1 , wherein the actuator further comprises a guide pin formed to extend in a direction in which the lead screw extends and coupled to the stationary headrest portion, and wherein the guide pin is coupled to the carrier to guide a movement direction of the carrier.

4. The headrest device according to claim 1 , wherein the lead screw is disposed in an inclined direction toward a rear of the vehicle, and
wherein the movable headrest portion is movable in an upward-and-downward direction or a forward-and-rearward direction of the vehicle along the inclined direction of the lead screw.

5. The headrest device according to claim 1 , wherein the stationary headrest portion comprises:
a stay formed to extend upwards from the seatback; and
a bracket coupled to an upper end of the stay, wherein the actuator is affixed to the brackets.

6. The headrest device according to claim 5 , wherein the stationary headrest portion further comprises a back cover configured to at least partially cover:
the bracket, and
a rear surface of the actuator.

7. The headrest device according to claim 5 , wherein the bracket comprises an upper flap and a lower flap, wherein the upper flap and the lower flap are formed to extend forward, and wherein the upper flap and the lower flap are configured to at least partially cover an upper portion of the actuator and a lower portion of the actuator, respectively, and
wherein the upper portion and the lower portion of the actuator are respectively coupled to the upper flap and the lower flap.

8. The headrest device according to claim 5 , wherein the bracket comprises side flaps formed to extend forward from opposite sides of the bracket and configured to at least partially cover opposite side surfaces of the actuator, respectively.

9. The headrest device according to claim 1 , wherein the movable headrest portion comprises:
a front frame configured to at least partially cover:
a front side of the stationary headrest portion, and
the actuator, wherein the front frame is coupled to the actuator and configured to move in the vertical direction; and

a front cover configured to at least partially cover the front frame.

10. The headrest device according to claim 9 , wherein the front frame has an inner cavity formed above the stationary headrest portion, and the stationary headrest portion is inserted into the inner cavity based on the actuator sliding the front frame downward.

11. A headrest device for a vehicle, the headrest device comprising:
a stationary headrest portion coupled to a seatback of the vehicle, the stationary headrest portion being located at a rear of a head of an occupant;
a movable headrest portion coupled to the stationary headrest portion so as to be movable in a vertical direction; and
an actuator configured to cause the movable headrest portion to move in the vertical direction, wherein the actuator comprises:
a driving motor comprising a rotation shaft, wherein the driving motor is coupled to the stationary headrest portion, and wherein the driving motor is configured to rotate the rotation shaft;
a lead screw coupled to the rotation shaft of the driving motor;
a motor cover coupled to the stationary headrest portion and formed to at least partially cover an upper surface of the driving motor on which the lead screw is disposed, the motor cover comprising an opening through which the lead screw penetrates; and
a carrier comprising:
a first side coupled to the lead screw and configured to move in the vertical direction according to rotation of the lead screw, and
a second side coupled to the movable headrest portion.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• Woobo Tech Co Ltd
• Hyundai Transys Inc

Inventors

• Won Tae Hee
• Lee Jun Ho
• Jeong Hae Il
• Kim Hyun

Classifications

• B60N2/821

  with continuous positioning · CPC title

• B60N2/809

  vertically slidable · CPC title

• B60N2/894

  with rods solidly attached to the back-rest · CPC title

• B60R16/033 Primary

  characterised by the use of electrical cells or batteries (for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36) · CPC title

• B60N2/02258

  characterised by the mounting of the electric motor for adjusting the seat · CPC title