A headrest can be pivoted between a use state and a retracted state. The headrest has a pivot shaft pivotally supported to an upper part of a back frame. Opening ends of the headrest frame are connected to the pivot shaft. A locking mechanism is provided on the pivot shaft between the ends of the headrest frame. The lock mechanism includes right and left lateral wall portions into which the pivot shaft is inserted. Right and left lateral plate portions are connected to the pivot shaft between the right and left lateral wall portions. The headrest frame is pivotally biased toward the retracted position by a pivot member biasing spring. The locking mechanism may have a columnar member. The columnar member may approach the pivot shaft while maintaining a parallel state with the pivot shaft.

A headrest can be pivoted between a use state and a retracted state. The headrest has a pivot shaft pivotally supported to an upper part of a back frame. Opening ends of the headrest frame are connected to the pivot shaft. A locking mechanism is provided on the pivot shaft between the ends of the headrest frame. The lock mechanism includes right and left lateral wall portions into which the pivot shaft is inserted. Right and left lateral plate portions are connected to the pivot shaft between the right and left lateral wall portions. The headrest frame is pivotally biased toward the retracted position by a pivot member biasing spring. The locking mechanism may have a columnar member. The columnar member may approach the pivot shaft while maintaining a parallel state with the pivot shaft.

A headrest assembly for use in an automobile that is pivotal in the fore-aft direction. The headrest assembly includes a housing formed of a front shell and a rear shell. An armature operatively couples the housing to a seatback of an automobile seat. A ratchet mechanism couples the housing to the armature and effectuates the pivotal movement. The ratchet mechanism includes a fixed ratchet member statically connected to the armature and that defines a plurality of fixed ratchet teeth. The ratchet mechanism also includes a moveable ratchet member pivotally connected to the housing and that defines a plurality of moveable ratchet teeth. The moveable ratchet member is biased in an engaged position wherein the fixed ratchet teeth and the moveable ratchet teeth are interlocked and hold the housing a varying pivot angles in the fore-aft direction with respect to the seatback.

A seat device, particularly aircraft seat device, includes at least one head-support module, which device has a central cushion unit and at least one lateral cushion unit, wherein the lateral cushion unit is supported movably relative to the central cushion unit.

A seat device, particularly aircraft seat device, includes at least one head-support module, which device has a central cushion unit and at least one lateral cushion unit, wherein the lateral cushion unit is supported movably relative to the central cushion unit.

A lock mechanism for controlling a rotating component including an outer shaft attachable to a stationary component and having a slotted ring defining capture slots and an interior annular space, a control ring having a first end disposed in the annular space, an inner shaft attachable to a rotating component configured to rotate relative to the stationary component, and the inner shaft engaged with a second end of the control ring, a first collar rotatably disposed around the slotted ring, the first collar having a plurality of release recesses, and a plurality of first bearings respectively retained within the capture slots beneath the first collar. In a first rotational position of the first collar, the plurality of release recesses align with the capture slots to rotationally disengage the rotating and stationary components. In a second rotational position of the first collar, the plurality of release recesses misalign with the capture slots to rotationally engage the rotating and stationary components.

A headrest for a seat assembly includes a central main body having a first side and a second side that is opposite from the first side. A first lateral stabilizer is moveably coupled to the first side of the central main body. The first lateral stabilizer is distinct from the central main body. A second lateral stabilizer is moveably coupled to the second side of the central main body. The second lateral stabilizer is distinct from the central main body. The first lateral stabilizer and the second lateral stabilizer are movable between retracted positions and stabilizing positions.

The present invention relates to a headrest moving device including a damper configured to generate a resistance force in a direction opposite to a moving direction when the headrest is moved, wherein, when the headrest is moved, the resistance force is different when the headrest is located at a first position from when the headrest is located at a second position, so that noise can be prevented from being generated and a user can be prevented from recognizing the moving of the headrest as a malfunction when the headrest is moved.

The present invention relates to a headrest moving device including a damper configured to generate a resistance force in a direction opposite to a moving direction when the headrest is moved, wherein, when the headrest is moved, the resistance force is different when the headrest is located at a first position from when the headrest is located at a second position, so that noise can be prevented from being generated and a user can be prevented from recognizing the moving of the headrest as a malfunction when the headrest is moved.

A seat device, particularly aircraft seat device, includes at least one head-support module, which device has a central cushion unit and at least one lateral cushion unit, wherein the lateral cushion unit is supported movably relative to the central cushion unit.