Active head restraint for a vehicle
AssigneeJohnson Controls GmbH
InventorSilvio Hartlaub
Life of this patent
Estimating the term…
Abstract
A head restraint for a vehicle seat is provided. The head restraint includes a head restraint subsection and a driving device. The head restraint subsection is movable from a use position to a safety position, while the driving device is configured to move the head restraint subsection from the use position to the safety position. The driving device includes at least two components which are movable with respect to each other under the action of a first force. At least one component has an oblique surface which acts on the other component and is inclined in relation to a direction of the first force. Movement of the at least one component under the action of the first force transmits a second force on the other component in a direction different than the first force.
Claims22
A head restraint for a vehicle seat having a backrest, the head restraint comprising:
- a headrest configured to be supported above the backrest by at least one retaining bar, the headrest comprising:
- a basic body;
- a head restraint subsection movable from a use position to a safety position, the head restraint subsection comprising a padded segment which can be shifted in relation to the basic body toward a seat occupant's head;
- and
- a driving device situated within the headrest and configured to move the head restraint subsection from the use position to the safety position, the driving device having at least two components which are both movable relative to each other, at least one of a first component and a second component of the at least two components having an oblique surface which acts on the other of the first component and the second component of the at least two components, wherein the oblique surface is inclined in relation to a direction of a first force,
- wherein movement of at least one of the first component and the second component under action of the first force transmits a second force on the other of the first component and the second component in a direction which deviates from the direction of the first force, and
- wherein the relative movement between the first component and the second component is translatory and rotary, the first component being rotatable about an axis of rotation that extends in a first direction, and the second component being translatable in the first direction.
A head restraint for a vehicle seat having a backrest, the head restraint comprising:
- a basic body configured to be supported above the backrest by at least one retaining bar;
- a head restraint subsection coupled to and supported forward of the basic body, the head restraint subsection being movable relative to the basic body from a use position to a safety position;
- and
- a driving device arranged between the basic body and the head restraint subsection, the driving device being configured to move the head restraint subsection from the use position toward a seat occupant's head to the safety position, the driving device comprising a first component and a second component, at least one of the first component and the second component having an oblique surface which acts on the other of the first component and the second component,
- wherein movement of at least one of the first component and the second component under action of a first force transmits a second force on the other of the first component and the second component in a direction which deviates from a direction of the first force and moves the head restraint subsection to the safety position,
- wherein the relative movement between the first component and the second component is translatory and rotary, the first component being rotatable about an axis of rotation that extends in a first direction, and the second component being translatable in the first direction.
A head restraint for a vehicle seat having a backrest, the head restraint comprising:
- a basic body configured to be supported above the backrest by at least one retaining bar;
- a head restraint subsection coupled to and supported forward of the basic body, the head restraint subsection being movable relative to the basic body from a use position to a safety position;
- and
- a driving device arranged between the basic body and the head restraint subsection, the driving device being configured to move the head restraint subsection from the use position toward a seat occupant's head to the safety position, the driving device comprising a first component and a second component, the first component being configured for at least rotary movement and the second component being configured for at least translatory movement, the first component being rotatable about an axis of rotation that extends in a first direction, and the second component being translatable in the first direction,
- wherein rotation of the first component about the axis of rotation under action of a first force transmits a second force on the second component in the first direction and moves the head restraint subsection to the safety position, the first direction deviating from the direction of the first force.
Dependencies are inferred from the claim text.