Abstract: A multi-stage backrest assembly for a chair includes a support frame, a back support mounted on the support frame, a head support mounted on the support frame, and a waist support pivotally mounted on the back support. Thus, the backrest assembly has a pivotable function so as to fit the curve of the user's body ergonomically, thereby providing a comfortable effect to the user. In addition, the locking tube of the crossbar of the back support is adjustably mounted on the respective support rod of the support frame, so that the back support is adjustably mounted on the support frame to adjust the height of the back support so as to fit users of different statures.

Abstract: An articulated headrestraint system for a vehicle seat permits the user to adjust the headrest vertically, and to adjust the headrest either forwardly by using a pushbuttom mechanism, or rearwardly with respect to the top of the seat.

Abstract: A head restraint guide assembly mounted into apertures formed in a seatback frame for receiving support posts of a head restraint. The head restraint guide allows for incremental adjustment and locking of the height of the head restraint relative to the seatback frame. The guide assembly has opposite upper and lower ends. A center bore extends between and through both of the upper and lower ends. The guide assembly comprises a generally cylindrical main body having upper and lower portions. A lip is formed in the upper portion adjacent to the lower portion. A lattice of structural ribs extends outwardly from the upper portion and extends between the lip and the upper end of the guide assembly. The lower portion comprises a pair of symmetrically opposite and spaced apart legs that extend downwardly from the upper portion. The legs are elastically inwardly displaceable. Each leg includes a ramped surface to facilitate insertion into the seatback frame. Each ramped surface terminates at a locating edge.

Abstract: The present invention relates to a head restraint assembly providing four-way adjustment and having dual positive stops as well as a single ergonomic control. The present invention includes a frame and a housing that engages a portion of the frame. The present invention further includes a cam assembly disposed within the housing to provide fore/aft adjustment of the housing relative to the frame. The cam assembly includes a camshaft and at least two drum assemblies supported by the camshaft. The cam assembly further includes a contact plate extending parallel to the camshaft to releasably engage the drum assemblies. The camshaft is connected to the contact plate to provide releasable engagement between the contact plate and the drum assemblies. The present invention further includes a control member to engage the cam assembly and provide for fore/aft and vertical adjustment in response to user input.

Abstract: A vehicle seat includes a head restraint which limits the magnitude of neck deflection of a vehicle occupant during a rear impact collision. The head restraint includes a support member attached to the top of a head restraint post. The support member includes a convex surface shaped to substantially conform to the profile of an occupant's head and neck. The support member is covered by a resilient material such as foam. The foam thickness is reduced due to the presence of the support member. Reduced foam thickness in addition to the shape of the support member provides for reduced occupant neck deflection during a rear impact collision.

Abstract: A cushion body of a headrest is fitted to a vehicle seat by two supporting rods, and, in the event of impact of the vehicle, is movable with respect to the supporting rods by an actuating device, wherein an actuating assembly, acting on the cushion body, is connected to a rear plate of a frame housed inside the cushion body and in turn connected releasably to the supporting rods; the actuating assembly having a front plate movable with respect to the rear plate and connectable to a portion of the cushion body.

Abstract: A headrest device for a vehicle seat, the headrest device including a stop device that is mounted to move between an active position adapted to prevent the headrest from being moved downwards beyond a low abutment position, and an inactive position adapted to enable the headrest to be moved downwards beyond its low abutment position into a retracted position. An actuator device is adapted to move the stop device from its inactive position to its active position while the headrest is being moved into its retracted position.

Abstract: A head restraint positioning device is provided for a head restraint of a vehicle seat. The head restraint positioning device includes an impact device movably connected to the head restraint and arranged on a seat back of the vehicle seat in the area of a pelvis of a passenger sitting on the vehicle seat. The impact device includes at least one structural unit that varies in length in response to the application of pressure and that causes a corresponding change in length of the impact device to change the position of the head restraint.

Abstract: An adjustable child seat includes a seat body having a seat back and a seat portion. The seat portion has a first base and a second base movably mounted to the first base. The child seat further includes a seat adjusting mechanism for adjusting the length of the seat to customize to differently sized children. In addition, the child seat includes a recline mechanism connected to the first and second bases to selectively tilt the seat body. The child seat can also include two adjustable armrests, and adjustable headrest, and an adjustable shoulder belt clip.

Abstract: In a neck support for a chair, a head cushion is articulated, via an articulation bearing, on a guide sleeve displaced on a retaining bar, articulated on the top edge of a backrest via a further articulation bearing, the retaining bar and the guide sleeve being of rectilinear design, this resulting in linear height adjustability of the neck support. The bottom articulation bearing and preferably also the top articulation bearing each comprise a cylinder on the retaining bar and two cylinders on a bearing foot or on a link plate, it being possible for the first cylinder to rotate in a controlled manner between the two second cylinders via blocks.

Abstract: A height adjustment arrangement for a headrest or the like includes a spring in a rear recess of a backrest. A T-shaped trigger member is received in the recess for biasing against the spring. A plate is secured onto the recess, with the plate having a slit. A finger tab of the trigger member projects from the horizontal slit. Two upright tubes are formed either on sides of a J-bar or on a backside of the backrest. An, inverted U-shaped rod has a top attached to the headrest or the like and two groups of notches opposite the backrest. The trigger member is locked in two notches. In operation, the finger tab is pushed to compress the spring for disengaging the trigger member from the notches. The rod can be raised or lowered relative to the trigger member until a desired height is reached. Finally, the finger tab can be released to lock the trigger member in the other notches again.

Abstract: A vehicle seat having a seat surface and a seatback is tiltable about a transversely extending pivot axis. The seatback is arranged to be tiltable from an upright seat position into a tilted resting position. In order to achieve a comfortable setting of the headrest in all seat positions and resting positions, the seatback has an automatically driven height adjustment apparatus and an automatically driven tilt adjustment apparatus, each positioned within the seatback.

Abstract: A cantilever supported headrest for use in a vehicle seat such as in the center occupant position in a non-first row application of a vehicle including a split seat back. The cantilever supported headrest includes a two-piece headrest support frame having a flange for connection to a square shaped tube end. The other end of the tube has a passage therein for receiving an anti-rotation bracket including an anti-rotation sleeve. A support bracket connecting the tube to a seat back frame includes a pair of aligned passages having the tube passing there through and the tube includes a plurality of notches for engagement with a height adjustment structure.

Abstract: A height adjustment arrangement for a headrest or the like includes a spring in a rear recess of a backrest. A T-shaped trigger member is received in the recess for biasing against the spring. A plate is secured onto the recess, with the plate having a slit. A finger tab of the trigger member projects from the horizontal slit. Two upright tubes are formed either on sides of a J-bar or on a backside of the backrest. An inverted U-shaped rod has a top attached to the headrest or the like and two groups of notches opposite the backrest. The trigger member is locked in two notches. In operation, the finger tab is pushed to compress the spring for disengaging the trigger member from the notches. The rod can be raised or lowered relative to the trigger member until a desired height is reached. Finally, the finger tab can be released to lock the trigger member in the other notches again.

Abstract: A neck rest includes a first support, a second support pivotably supported on the first support, and third support displaceably supported on the second support between a lower and an upper position. A controllable locking mechanism retains the third support in the lower position, the locking mechanism being unlocked when the second support has a attained a predetermined pivot angle. A stop is placed between second and/or third support and first support to prevent a pivoting of the second and the third supports towards the first support when the second and third supports have a attained their extended position.

Abstract: A head restraint guide assembly mounted into apertures formed in a seatback frame for receiving support posts of a head restraint. The head restraint guide allows for incremental adjustment and locking of the height of the head restraint relative to the seatback frame. The guide assembly has opposite upper and lower ends. A center bore extends between and through both of the upper and lower ends. The guide assembly comprises a generally cylindrical main body having upper and lower portions. A lip is formed in the upper portion adjacent to the lower portion. A lattice of structural ribs extends outwardly from the upper portion and extends between the lip and the upper end of the guide assembly. The lower portion comprises a pair of symmetrically opposite and spaced apart legs that extend downwardly from the upper portion. The legs are elastically inwardly displaceable. Each leg includes a ramped surface to facilitate insertion into the seatback frame. Each ramped surface terminates at a locating edge.

Abstract: A head restraint assembly (16) comprising at least one post (20) having at least one retainer notch (52) and a tubular bushing (22) having a head (26) with a socket (32) and a bore (24) having longitudinal ribs (71) and sized to receive the at least one post (20). A button subassembly (38) which is insertable into the socket (32) is also provided. The button subassembly (38) is movable within the socket (32) such that an tongue (48) is movable in and out of alignment with an associated retainer notch (52) to allow the at least one post (20) to move. A method of attaching a head restraint assembly having a head restraint pad to a seat back is also disclosed.

Abstract: A folding rear seat for vehicles, especially passenger vehicles and station wagons, includes a folding seat back and a height-adjustable neck support mounted on the seat back. The neck support is mounted on at least one support rod that supports a padded head rest and is held such that it can shift axially within a guide in the seat back. The head rest can be retracted from a temporary vertical position to a minimum possible distance between the padded head rest and the seat back in order to allow the seat back to be folded down.

Abstract: A headrest assembly is provided wherein a headrest guide and/or a headrest insert permit adjustment of the headrest even when one or more components of the headrest assembly are misaligned or out of tolerance. The headrest guide includes two sleeves, each sleeve forming a channel, the two sleeves rigidly connected with respect to one another so that the channel of each sleeve is parallel with the other.

Abstract: A vehicle seat for use with a vehicle includes a seatback frame and a guide member attached to the seatback frame. A slide bracket is attached to the seatback frame below the guide member, and the slide bracket has a slot. The seat further includes a headrest arrangement movably associated with the seatback frame. The headrest arrangement includes a headrest and a support structure connected to the headrest and engageable with the guide member. The support structure includes a projection that extends into the slot and that is movable with respect to the slide bracket from an initial position to an actuated position. Upon sufficient impact to the vehicle, the projection moves from the initial position toward the actuated position and the support structure moves along the guide member, such that movement of the headrest is guided to provide support for the head of an occupant.

Abstract: A passenger seat having a seat back with a head restraint, the seat back pivotally attached to a seat cushion or a floor of a vehicle. When the seat back is folded down, the head restraint pivots up to allow the seat back to lay generally horizontal on the seat cushion thereby maximizing storage space without it contacting a front passenger seat.

Abstract: A retractable headrest is movable between an extended position for protecting a passenger and a retracted position for improving rearward visibility. In a first embodiment, the headrest is positioned below a stretchable fabric panel which allows a headrest shell to be raised into the extended position by stretching the panel. A second embodiment incorporates an extending cushion that can be moved between the extended and retracted positions by an extending arm. A third embodiment incorporates a support frame that can be folded or bowed by a drive mechanism to move between the retracted and extended positions. A fourth embodiment is a hybrid between the second and third embodiments.

Abstract: A head restraint positioning device is provided for a head restraint of a vehicle seat. The head restraint positioning device includes an impact device movably connected to the head restraint and arranged on a seat back of the vehicle seat in the area of a pelvis of a passenger sitting on the vehicle seat. The impact device includes at least one structural unit that varies in length in response to the application of pressure and that causes a corresponding change in length of the impact device to change the position of the head restraint.

Abstract: A headrest device for a vehicle seat, the headrest device including a stop device that is mounted to move between an active position adapted to prevent the headrest from being moved downwards beyond a low abutment position, and an inactive position adapted to enable the headrest to be moved downwards beyond its low abutment position into a retracted position. An actuator device is adapted to move the stop device from its inactive position to its active position while the headrest is being moved into its retracted position.

Abstract: A guide sleeve receives and supports a guide post of a bead restraint within a seat back frame of a seat assembly. The guide sleeve includes a body extending between opposite upper and lower ends. A bare defined by cylindrical inner walls extends longitudinally through the guide sleeve for slidably receiving the guide post therethrough for allowing selective adjustment of the head restraint relative to the seat back between a plurality of head supporting positions. A plurality of rings project outwardly from the body and are deformable against the seat back frame during insertion of the guide sleeve into a hole or tube formed in the seat back frame for creating a interference fit between the guide sleeve and the seat back frame without deforming the bore, and thereby, not increasing efforts required to slide the guide post through the bore during movement of the head restraint between the plurality of head supporting positions.

Abstract: A headrest mechanism includes a post extending from a headrest pad, a tubular bushing adapted to be coupled to an occupant seat, a slider assembly and an actuator. The slider assembly is moveably positioned within the bushing and includes a block selectively moveable between a position engaged with and a position disengaged with the bushing. The post of the headrest pad is coupled to the slider assembly such that movement of the slider assembly causes the headrest pad to move.

Abstract: A neckrest, for a chair having a backrest, is configured to be attached to a backrest shield in a height-adjustable manner. The neckrest includes a circular cross-section retaining rod, configured to be connected to the backrest shield via an articulated or movable connection so as to be tiltable by up to approximately 30° in a vertical plane vertically with respect to a surface of the backrest, and a circular cross-section guide sleeve, mounted on the retaining rod so as to be slidingly shiftable by up to approximately 200 mm on the retaining rod. The retaining rod includes a molding on a side thereof which is closest the backrest and seated in a housing having a recess. The molding has a round surface which slides under pressure on a polyurethane rubber material friction dampening device so as to achieve the articulated connection.

Abstract: An adjustable head restraint assembly for enabling a head restraint pad (18) to be adjustably and lockably positioned with respect to a motor vehicle seatback (14) so that the head restraint remains in an adjusted position during a crash sequence after being set by a user. Associated with the head restraint pad is a pair of posts (20) that are provided with notches (52) for adjustment and one or more square securement notches (94) to prevent unintended separation of the head restraint pad (18) from the seatback (14).

Abstract: A headrest guide sleeve for adjustably supporting a headrest pad is mounted in the back rest of a motor vehicle seat. The guide sleeve has a sleeve having a through bore for receiving the rod of the headrest, and a lever member rotatably fixed to an intermediate portion of the sleeve via a hinge mechanism. A biasing element is provided for biasing the lower end of the lever member toward the lower portion of the sleeve. The lever member includes a rib projecting into the through bore for engaging a notch formed on the rod. The upper end of the lever member is engaged with an actuating element. When the actuating element is actuated, the lever member is caused to rotate about the axis of the hinge mechanism against a biasing force of the biasing element thereby releasing the rib from the notch.

Abstract: A cantilever supported headrest for use in a vehicle seat such as in the center occupant position in a non-first row application of a vehicle including a split seat back. The cantilever supported headrest includes a two-piece headrest support frame having a flange for connection to a square shaped tube end. The other end of the tube has a passage therein for receiving an anti-rotation bracket including an anti-rotation sleeve. A support bracket connecting the tube to a seat back frame includes a pair of aligned passages having the tube passing there through and the tube includes a plurality of notches for engagement with a height adjustment structure.

Abstract: A motor vehicle seat frame assembly has a headrest movable between an extended position and a retracted position. The frame assembly comprises a seatback frame operatively engaged with the headrest, the seatback frame being pivotable from a use position to a lowered position. A sun gear is fixed against rotation relative to the motor vehicle, and a planet gear is attached to the seatback frame and rotatably engaged with the sun gear. The planet gear is operatively engaged with the headrest to extend and to retract the headrest as the planet gear rotates about the sun ge.

Abstract: A mechanism for adjusting the height of the back support of a chair comprises a frame, a back support, a first link, and a second link. Two lateral plates extend vertically at the top of the frame. A U bracket is mounted on the rear wall of the back support, whose lateral plates have two symmetrically formed pairs of axle holes. At two ends of the first and the second links, there exist holes for respectively pivotably connected to those pairs of axle and pivot holes by axle pins. The lines defined by two pivot holes and two axle holes take special oblique angles, so that when those links rotate about the top Of the frame, the back support keeps vertical. When the links are placed vertically, the back support supports a sitter's back. When the links are placed horizontally, the back support supports a sitter's waist.

Abstract: A chair, in particular an office chair, comprises a pedestal; a seat support propped thereon; a seat supporting itself on the seat support; a backrest support mounted on the seat support; a headrest support mounted on the backrest support; and a headrest mounted on the headrest support and having a height setting mechanism for height adjustment of the headrest and an inclination setting mechanism for adjustment of an angle of inclination a of the headrest.

Abstract: A motor vehicle seat frame assembly for moving a headrest between an extended position and a retracted position as the frame assembly pivots. The frame assembly comprises a seatback frame operatively engaged with the headrest, and a bar having first and second ends. The seatback frame is pivotable from a use position about a first pivot that is fixed with respect to the vehicle. The first end of the bar is pivotably connected to a second pivot that is fixed with respect to the vehicle, and the second end of the bar is attached to the headrest such that the headrest moves from the extended position toward the retracted position as the seatback frame is pivoted from the use position.

Abstract: An adjustable child seat includes a seat body having a seat back and a seat portion. The seat portion has a first base and a second base movably mounted to the first base. The child seat further includes a seat adjusting mechanism for adjusting the length of the seat to customize to differently sized children. In addition, the child seat includes a recline mechanism connected to the first and second bases to selectively tilt the seat body. The child seat can also include two adjustable armrests, and adjustable headrest, and an adjustable shoulder belt clip.

Abstract: A tensioning cable actuator has a housing with a nut held in the housing. The nut has threads which engage a lead screw that has corresponding threads. A pulley cradle is fixed to the lead screw. The pulley cradle is disposed within the housing to translate axially with the lead screw upon rotation of the nut. A pulley is disposed in the pulley cradle. A Bowden cable wire wraps around the pulley and is anchored to the housing so that the wire moves into or out of the Bowden cable sleeve twice far as the lead screw moves.

Abstract: An adjustable headrest that provides both support and comfort to the user and one that can be used in connection with furniture including household and office furniture and also in connection with various types of passenger vehicles. The headrest includes slide means for permitting easy height adjustment of the headrest and also includes locking means for securely locking the headrest in a desired elevated position. Further, the headrest includes easily adjustable, wing-like, side-support members that are pivotally connected to a centrally located, vertically adjustable head support member by means of constant torque hinges and also includes easily adjustable chin support members that are pivotally connected to the side support members by means of constant torque hinges.

Abstract: An adjustable back rest for a motorcycle comprising a carrier assembly connected to the frame of the motorcycle, a back plate assembly pivotally attached to the carrier assembly and positionable at an inclination angle, and an extensible slide connected between the carrier assembly and the back plate assembly that extends or retracts to thereby adjust the inclination angle of the back plate assembly and then is secured in place to position the back plate assembly as desired. A pillion rest is attached to the back plate assembly and is angularly adjustable by positioning a plurality of bar links connected between the pillion rest and the back plate assembly. The carrier assembly can be positioned and secured to the motorcycle frame to provide back rest support for the driver, or it may be positioned and secured to a cargo carrier attached to the frame to provide back rest support for the passenger.

Abstract: A head restraint assembly (16) comprising at least one post (20) having at least one retainer notch (52) and a tubular bushing (22) having a head (26) with a socket (32) and a bore (24) having longitudinal ribs (71) and sized to receive the at least one post (20). A button subassembly (38) which is insertable into the socket (32) is also provided. The button subassembly (38) is movable within the socket (32) such that an tongue (48) is movable in and out of alignment with an associated retainer notch (52) to allow the at least one post (20) to move. A method of attaching a head restraint assembly having a head restraint pad to a seat back is also disclosed.

Abstract: A locking/unlocking mechanism for headrest, which is provided in a headrest holder in which a headrest stay is slidably inserted, comprising: an elastic lock element secured in the headrest holder; and an unlocking hole so formed in the headrest holder as to lead to the elastic lock element. The elastic lock element can be engaged in an ordinary stopper notch formed in the headrest stay to prevent removal of the headrest from a seat back of seat, but can be disengaged therefrom by inserting a tool into the unlocking hole so as to resiliently bend the elastic lock element away from the stopper notch, thereby allowing removal of the headrest from the seat back. Preferably, the elastic lock element is formed in a generally “U” shape.

Abstract: A locking/unlocking mechanism for headrest, provided in a headrest holder in which a headrest stay of the headrest is slidably inserted, which comprises: a lock element having a hole; a biasing element; and an unlocking hole formed in the headrest holder. The lock element is movable between a locking position for engagement with a stopper notch formed in the headrest stay and an unlocking position for disengagement from the stopper notch. The lock element is normally biased by the biasing means in a direction to the locking position. When the lock element is set in the unlocking position, an unlocking tool can be inserted in the unlocking hole of headrest holder and engaged in the hole of lock element so as to retain he lock element in the unlocking position, whereby the headrest can be easily removed from the headrest holder.

Abstract: The present invention involves a vehicle seat and headrest arrangement for use with a seat having a seatback in a vehicle. The vehicle seat and headrest arrangement comprises a headrest arrangement having a headrest. The headrest arrangement has one of a guide member and a follower. The seatback has the other one of a guide member and follower. The guide member has a guideway and the follower engages the guideway of the guide member such that upon impact to the vehicle forward inertia of the headrest will cause the follower to engage the guideway in such a manner as to cause the headrest to move in a manner so as to support the head of an occupant irrespective of whether occupant is in contact with the seatback.

Abstract: A locking/unlocking mechanism for headrest, provided in a headrest holder in which a headrest stay of the headrest is slidably inserted, which comprises: a lock element having a hole; a biasing element; and an unlocking hole formed in the headrest holder. The lock element is movable between a locking position for engagement with a stopper notch formed in the headrest stay and an unlocking position for disengagement from the stopper notch. The lock element is normally biased by the biasing means in a direction to the locking position. When the lock element is set in the unlocking position, an unlocking tool can be inserted in the unlocking hole of headrest holder and engaged in the hole of lock element so as to retain he lock element in the unlocking position, whereby the headrest can be easily removed from the headrest holder.

Abstract: A motor vehicle seat frame assembly has a headrest movable between an extended position and a retracted position. The frame assembly comprises a seatback frame operatively engaged with the headrest, the seatback frame being pivotable from a use position to a lowered position. A sun gear is fixed against rotation relative to the motor vehicle, and a planet gear is attached to the seatback frame and rotatably engaged with the sun gear.

Abstract: A guide assembly for a headrest having at least one support comprises a track having a first plurality of openings and a second plurality of openings spaced from the first plurality of openings. A first set of ball bearings is disposed in the first plurality of openings, and a second set of ball bearings disposed in the second plurality of openings. The first and second sets of ball bearings engage the at least one support.

Abstract: First and second head supports are releasably attached to the side edges of a child safety seat. Each of the head supports has a cushion section positioned on the inner side of the seat back and a clamp arm positioned on the outer side of the seat back, with the clamp arm having a proximal end attached to the cushion section. The spacing between the clamp arm adjacent the proximal end of the cushion section is approximately equal to the width of the seat back. Preferably, the cushion section is generally cubical, with first and second headrest faces, permitting use of the head supports on seats having backs with side edges generally parallel to the seat back center section, as well as seat backs having side edges generally perpendicular to the seat back center section.

Abstract: A guide sleeve for receiving and supporting a guide post of a head restraint within a seat back frame of a seat assembly. The guide sleeve includes a body extending between opposite upper and lower ends. A bore defined by cylindrical inner walls extends longitudinally through the guide sleeve for slidably receiving the guide post therethrough for allowing selective adjustment of the head restraint relative to the seat back between a plurality of head supporting positions. A plurality of rings project outwardly from the body and are deformable against the seat back frame during insertion of the guide sleeve into a hole or tube formed in the seat back frame for creating an interference fit between the guide sleeve and the seat back frame without deforming the bore, and thereby, not increasing efforts required to slide the guide post through the bore during movement of the head restraint between the plurality of head supporting positions.

Abstract: A method of manufacturing a headrest support rod includes bending a cylindrical steel rod into a desired shape including first and second legs. The bent steel rod is then placed into an injection mold, and first and second plastic sleeves are injection molded over the first and second legs, respectively, to complete the headrest support rod. Accordingly, weight of the headrest support rod is minimized. Preferably, the first and second plastic sleeves include lock slots formed therein.

Abstract: The present invention involves a method of providing head support with a movable headrest of a vehicle seat to a vehicle occupant head during impact of the vehicle. The method includes moving the headrest toward the head of the occupant in a first manner upon impact of the vehicle and moving the headrest toward the head of the occupant in a second manner different from the first manner. The first and second manners may include first and second velocities and first and second trajectories of the headrest.

Abstract: The present invention involves a vehicle seat and headrest arrangement for use with a seat having a seatback in a vehicle. The vehicle seat and headrest arrangement comprises a headrest arrangement including a headrest, at least one impact target, and at least one of a guide member and a follower. The seatback has at least one of the other of a guide member and follower. The guide member has a guideway and the follower engages the guideway of the guide member such that upon impact to the vehicle a rearward load by the occupant upon the impact target will cause the follower to engage the guideway in such a manner as to cause the headrest to be moved in a first manner and a second manner so as to support the head of an occupant.