The present invention relates to a headrest controlling apparatus, and more particularly, to a headrest controlling apparatus which includes a first fixing member installed on a first member, and a second fixing member installed in the second member to slide in a lateral direction and configured to fix a position of the headrest, wherein one of the first fixing member and the second fixing member includes a fixing groove formed in a lateral direction, the other one includes a fixing protrusion which is inserted into the fixing groove, and the second fixing member includes a first fixing member insertion groove formed to pass therethrough in a rotational direction of the second member so that the first fixing member is inserted thereinto, and thus has a simplified structure, and the first fixing member is fitted onto the first fixing member insertion groove when an occupant pushes the second fixing member to fold a headrest, and thus, convenience of use can be increased by not continuously pushing the second fixing member.

Disclosed is a headrest fore-aft position adjuster including a displaceable body which receives load of an occupant's head and which displaces in a fore-aft direction with respect to a headrest pillar and a lock mechanism which locks and unlocks the displaceable body at a plurality of positions along the fore-aft direction, and the lock mechanism includes an engaging part which displaces in the fore-aft direction integrally with the displaceable body, a plurality of engaged part which is provided along a trajectory of the engaging part and which the engaging part is engaged with in a locked state and the engaging part is configured to engage with the engaged parts from a lateral position.

Disclosed is a headrest fore-aft position adjuster including a displaceable body which receives load of an occupant's head and which displaces in a fore-aft direction with respect to a headrest pillar and a lock mechanism which locks and unlocks the displaceable body at a plurality of positions along the fore-aft direction, and the lock mechanism includes an engaging part which displaces in the fore-aft direction integrally with the displaceable body, a plurality of engaged part which is provided along a trajectory of the engaging part and which the engaging part is engaged with in a locked state and the engaging part is configured to engage with the engaged parts from a lateral position.

A headrest comprising a mounting part, a resting part comprising a frame mounted on the mounting part in a rotatable manner about a pivot axis between a forward most position and a rearward most position, a locking device comprising a control rod configured to be actuated by a user so as to move between a locked position in which the resting part is prevented from moving with respect to the mounting part and an adjustment position in which the resting part is allowed to move with respect to the mounting part, and an urging device configured to urge the resting part is towards the forward most position.

A vehicle headrest assembly includes a latch mechanism moveable between an engaged position and a release position. The vehicle headrest assembly also includes a shape memory alloy (SMA) release assembly operatively coupled to the latch mechanism to selectively move the latch mechanism from the engaged position to the release position. The SMA release assembly includes an actuator base including a pair of tracks defining a slot, the actuator base including a plurality of retaining tabs. The SMA release assembly also includes a printed circuit board (PCB) retained directly to the actuator base and disposed adjacent the plurality of retaining tabs. The SMA release assembly further includes a slide disposed within the slot and retained to the actuator base with the pair of tracks. The slide is moveable to contact and bias the latch mechanism to the release position upon energization and contraction of a SMA wire.

A turnable headrest includes a headrest body and a headrest rod. The headrest body is wrapped around and hinged to a horizontal rod of the headrest rod, and two vertical rods of the headrest rod are inserted into a seat. The turnable headrest further includes a fixed tooth, a torsion spring, a rotary tooth, and a reset tension spring. A headrest body locking portion, a headrest body rotary tooth portion, and a turned headrest body locking portion are disposed on the fixed tooth. A rotary tooth portion is disposed on the rotary tooth. When the rotary tooth portion is mated with the headrest body locking portion on the fixed tooth, the headrest body is locked at an initial use position. When the rotary tooth portion is mated with the headrest body rotary tooth portion on the fixed tooth, the headrest body is at a turnable position. When the rotary tooth portion is mated with the turned headrest body locking portion on the fixed tooth, the headrest body is locked at a flat position. The turnable headrest has advantages such as a strong self-locking ability, a small quantity of parts, a simple structure, and low costs.

This invention relates to a headrest folding device having a simple locking and unlocking structure, wherein a locking bar of a lifting slider is disposed directly under a locking groove of an upper latch, and stably guiding vertical linear sliding of the lifting slider.

A turnover mechanism is disclosed. The turnover mechanism includes a bracket assembly, a rotatable cam, a cam resetting component, a locking pawl piece, a rotating shaft, and a rotating shaft resetting torsion spring. The cam is axially disposed on the bracket assembly. The cam resetting component is connected to the cam and the bracket assembly. The locking pawl piece is axially disposed on the bracket assembly. The cam drives the locking pawl piece to move between a locked state and an unlocked state through forward and reverse movements. The rotating shaft is axially disposed on the bracket assembly and is provided with a locking tooth plate. When the locking pawl piece is in the locked state, a locking pawl in the locking pawl piece and a locking groove on the locking tooth plate are locked and engaged, and the rotating shaft and the bracket assembly are restricted from relative rotation by the locking tooth plate. When the locking pawl piece is at an unlocked position, the locking pawl in the locking pawl piece and the locking groove on the locking tooth plate are unlocked and disengaged, and the rotating shaft and the bracket assembly are rotatable relatively. The rotating shaft resetting torsion spring is connected to the locking tooth plate and the bracket assembly. The rotating shaft resetting torsion spring drives the locking tooth plate and the rotating shaft to rotate relative to the bracket assembly.

A turnover mechanism is disclosed. The turnover mechanism includes a bracket assembly, a rotatable cam, a cam resetting component, a locking pawl piece, a rotating shaft, and a rotating shaft resetting torsion spring. The cam is axially disposed on the bracket assembly. The cam resetting component is connected to the cam and the bracket assembly. The locking pawl piece is axially disposed on the bracket assembly. The cam drives the locking pawl piece to move between a locked state and an unlocked state through forward and reverse movements. The rotating shaft is axially disposed on the bracket assembly and is provided with a locking tooth plate. When the locking pawl piece is in the locked state, a locking pawl in the locking pawl piece and a locking groove on the locking tooth plate are locked and engaged, and the rotating shaft and the bracket assembly are restricted from relative rotation by the locking tooth plate. When the locking pawl piece is at an unlocked position, the locking pawl in the locking pawl piece and the locking groove on the locking tooth plate are unlocked and disengaged, and the rotating shaft and the bracket assembly are rotatable relatively. The rotating shaft resetting torsion spring is connected to the locking tooth plate and the bracket assembly. The rotating shaft resetting torsion spring drives the locking tooth plate and the rotating shaft to rotate relative to the bracket assembly.

A headrest module for a motor vehicle seat includes a base component and a headrest mounted in the base component. The headrest is configured to be guided in a vehicle longitudinal direction so as to be extendable and retractable relative to the base component. The headrest further includes a fixing mechanism having a first fixing element with teeth and a second fixing element configured to be moved towards the first fixing element for engagement between adjacent teeth. Contact faces of the two fixing elements are configured such that an extension of the headrest is possible under the action of a force on the headrest in an extension direction. A movement of the headrest in a retraction direction is possible under action of a release mechanism of the headrest module configured to move the second fixing element out of the region between the teeth of the first fixing element.