Headrest system and method of adjusting a headrest
First Claim
Patent Images
1. A headrest system comprising:
- a headrest;
a bracket having a longitudinal member for mounting the headrest to a seat; and
an actuator configured to displace at least a portion of the headrest relative to the bracket in a displacement direction,wherein the actuator comprises a first spindle transmission and a power drive coupled to the first spindle transmission, the first spindle transmission including a spindle and a first spindle nut engaged with the spindle, the power drive arranged in a cavity defined within an outer shell of the headrest, the first spindle nut arranged within the cavity, and the spindle arranged within the cavity such that a longitudinal axis of the spindle is orthogonal to the displacement direction, andwherein the actuator further comprises a second spindle transmission, the second spindle transmission including a second spindle nut.
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Abstract
A headrest system comprises a headrest, a bracket to which the headrest is mounted and an actuator. The actuator is configured to displace at least a portion of the headrest relative to the bracket in a displacement direction which is transverse to a longitudinal member of the bracket. The actuator comprises a spindle transmission and a power drive coupled to the spindle transmission. The spindle transmission comprises a spindle and a spindle nut engaged with the spindle. The power drive is arranged in a cavity defined within an outer shell of the headrest.
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Citations
15 Claims
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1. A headrest system comprising:
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a headrest; a bracket having a longitudinal member for mounting the headrest to a seat; and an actuator configured to displace at least a portion of the headrest relative to the bracket in a displacement direction, wherein the actuator comprises a first spindle transmission and a power drive coupled to the first spindle transmission, the first spindle transmission including a spindle and a first spindle nut engaged with the spindle, the power drive arranged in a cavity defined within an outer shell of the headrest, the first spindle nut arranged within the cavity, and the spindle arranged within the cavity such that a longitudinal axis of the spindle is orthogonal to the displacement direction, and wherein the actuator further comprises a second spindle transmission, the second spindle transmission including a second spindle nut. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A headrest system comprising:
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a headrest; a bracket having a longitudinal member for mounting the headrest to a seat; and an actuator configured to displace at least a portion of the headrest relative to the bracket in a displacement direction arranged at an angle relative to the longitudinal member, wherein the actuator comprises a spindle transmission and a power drive coupled to the spindle transmission, the spindle transmission including a spindle and a spindle nut engaged with the spindle, the power drive arranged in a cavity defined within an outer shell of the headrest, wherein the power drive includes a motor, and wherein the actuator has a two-stage worm transmission coupled between the motor and the spindle transmission.
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13. A method of adjusting a headrest mounted to a seat via a bracket, the bracket having a longitudinal member, the method comprising:
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activating a power drive arranged in a cavity defined within an outer shell of the headrest to drive a spindle transmission through a two-stage worm transmission coupled between a motor of the power drive and the spindle transmission, the spindle transmission including a spindle and a spindle nut engaged with the spindle, wherein the spindle transmission displaces at least a portion of the headrest relative to the bracket in a displacement direction which is arranged at an angle relative to the longitudinal member.
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14. A method of adjusting a headrest mounted to a seat via a bracket, the bracket having a longitudinal member, the method comprising:
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activating a power drive arranged in a cavity defined within an outer shell of the headrest to drive a first spindle transmission and a second spindle transmission, the first spindle transmission including a spindle and a first spindle nut engaged with the spindle, the second spindle transmission including a second spindle nut, wherein the first spindle transmission displaces at least a portion of the headrest relative to the bracket in a displacement direction, the spindle arranged within the cavity such that a longitudinal axis of the spindle is orthogonal to the displacement direction.
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15. A headrest system comprising:
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a headrest; a bracket having a longitudinal member for mounting the headrest to a seat; and an actuator configured to displace at least a portion of the headrest relative to the bracket in a displacement direction, wherein the actuator comprises a spindle transmission and a power drive coupled to the spindle transmission, the power drive comprising at least one speed reduction stage, the spindle transmission including a spindle and a spindle nut engaged with the spindle, the spindle arranged within a cavity defined within an outer shell of the headrest such that a longitudinal axis of the spindle is orthogonal to the displacement direction, the spindle nut arranged within the cavity, the spindle having an external helical thread and the spindle nut having an internal helical thread engaged with the external helical thread of the spindle.
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Specification