Abstract: A system and method installing and removing a headrest from a seat is disclosed. The system and method include provisions for installing a headrest to a seat without the use of tools and for preventing the removal of the headrest during normal operation. The system and method can also include provisions for removing the headrest by operating an internal locking device.

Abstract: A juvenile vehicle seat unit includes a seat and a headrest mounted for up-and-down movement on a headrest support included in the seat. The seat unit also includes a headrest height-adjustment mechanism coupled to the headrest and to the headrest support.

Abstract: Head restraint supporting structure of the present invention is such that a head restraint bracket supporting a head restraint is secured to a seat back frame, a stay of the head restraint being inserted into the head restraint bracket. Wherein the head restraint bracket is formed into a tubular shape by joining two end portions of a plate material having been bent, and is secured to the front face of the seat back frame so that junction between the two end portions abuts against the seat back frame. A reinforcement structure is formed at the upper end of the junction. This reinforcement structure prevents the upper end of the junction from being opened by a load being applied to the head restraint, thereby allowing the head restraint 9 to restrain reliably the rearward movement of occupant's head and hence to reliably protect the occupant's neck.

Abstract: A locking device and a headrest are disclosed. The locking device includes spring elements, which can be engaged in at least one locking position and the locking device can be displaced in relation to at least two retaining bars that have a large number of recesses. The spring elements co-operate with the recesses in such a way that the engagement of the spring elements in their locking position locks the locking device in relation to the retaining bars. According to the invention, the spring elements are configured in such as way that the retaining bars are locked by the mechanical fixing of the spring elements in their central zone or by exertion of a force on the spring elements in their central zone.

Abstract: A vehicle seat assembly includes a seat bottom and a seat back connected to the seat bottom. A reclining mechanism is configured to adjustably position the seat back. A head restraint assembly includes a head restraint and one or more supports pivotally connected to and cooperating with the seat back to position the head restraint adjacent an occupant's head. A headrest adjustment mechanism includes a spring connected to the one or more supports that biases the shaft from an unlocked toward a locked position and a release mechanism cooperating with the one or more supports which allows the one or more supports to be unlocked so that the headrest can be adjusted relative to the seat back.

Abstract: A headrest device of a vertically movable type including a headrest body, a stay element and a lock mechanism provided on a seat back of a seat. The lock mechanism includes a lock plate movably disposed therein and a biasing means for normally biasing said lock plate in a locking direction. The stay element is slidably connected with the lock mechanism so as to be vertically movable and has a non-linearly profiled surface region defined in a surface portion thereof with which said lock plate is biased by said biasing means to frictional contact. Such formation of non-linearly profiled surface region is effective in preventing a friction noise from being generated between the lock plate and the stay element.

Abstract: The translation movement guidance mechanism with positional locking includes a stem and one or more bushes sliding in relation to the stem, the bushes being attached to a support plate which extends parallel to the stem and a locking component which includes two bearing elements more or less parallel and arranged so that, in a locking position of the locking component, they exert a gripping force on two diametrically opposite sides of the stem. The bushes are arranged so that the stem can be installed on the support plate in an assembly direction perpendicular to the support plate and the locking component includes, between the two bearing elements, a recess allowing the insertion of the stem into the recess simultaneously with the installation of the stem on the support plate. The translation movement guidance mechanism could be applied to adjustable elements of an automobile vehicle seat, especially the headrests.

Abstract: A backrest adjusting device for office chairs comprising: a seat portion having a seat cushion and a stand for supporting the seat cushion; a back having a frame, a back cushion fixed on the surface of the frame, a connecting member for connecting the bottom of the back to a rear side of the seat portion, a hollow containing space formed at the middle section of the back, an n-shaped member being disposed in the containing space and extended backward; and a first attaching device installed on the n-shaped member of the containing space, thereby achieving the adjustment of the three-dimensional space of position, longitudinal buffer and angular rotation. Moreover, the back further includes a support member disposed at the top of the back, and a second attaching device installed on the support member and having a structure identical to the first attaching device. Meanwhile, the first attaching device has an attaching body made in compliance with the shape of a human waist to form a backrest bump.

Abstract: A headrest mechanism includes a headrest stay, a headrest support, an engagement member, a plurality of adjustment portions, and a pullout prevention portion. The height of a headrest may be adjusted by pushing the button portion of the headrest support to disengage the engagement member provided in the headrest support from an adjustment portions provided on the side surface of a headrest stay. The headrest, including the headrest stay, may be removed by turning a lock portion of the headrest support by 90 degrees, pushing the button portion and pulling up the headrest. Thus, the headrest can be removed without using any additional tools.

Abstract: Backrest for a vehicle seat with a height-adjustable headrest, which is adjusted by support rods guided inside the backrest frame, and which has ends of the support rods connected to one another by a crossbar having one or more radially biased retaining elements for retaining an end of one of the support rods, and a locking element provided for restricting movement of the retaining element. During assembly of the automobile seat, before upholstering, one of the stop-lock connections located between the support rods and the crossbar is locked by pushing a locking element up on the outside of the retaining element. The stop-lock connection is thus “frozen” to a certain extent. Once manufacturing of the automobile seat is completed, this stop-lock connection can be disengaged only by partially removing the upholstery, which for practical purposes excludes a removal of the headrests for day-to-day driving.

Abstract: A headrest height adjusting apparatus includes: a basal member attached to a seatback and supporting a driving member; a movable member linked to a headrest and lifted up and down relative to the basal member; a transmitting member transmitting a driving force of the driving member to the movable member and lifting up and down the headrest linked to the movable member. The transmitting member having a frangible portion that leads a collapse of the transmitting member against an impact applied in a vertical direction between the driving member and the movable member and absorbs energy of the impact.

Abstract: An apparatus and method for adjusting the height of a vehicle head restraint includes a top cover, latch assembly, and bottom cover. The top cover is connected to the head restraint. A latch assembly is moveable in a lateral direction relative to a latch post, and a bottom cover connects to the top cover, sandwiching the latch assembly between the top and bottom covers. When the button portion of the latch assembly is actuated, the latch assembly unlatches from the latch post, allowing the height of the head restraint to be adjusted. By directly connecting to the underside of the head restraint, the apparatus is further operative to close out the bottom closeout opening on the underside of the head restraint and provide an aesthetically pleasing finish.

Abstract: A headrest stay for supporting a headrest is inserted in a headrest bush and is supported. A height adjusting mechanism is attached to the headrest bush at a position corresponding to an upper end portion of a seat back. A headrest removal prevention device for preventing the headrest from being removed is built in the headrest bush at a position inside the seat back. The height adjusting mechanism and the headrest removal prevention device are formed of the same component.

Abstract: A juvenile seat includes a base having a bottom seat portion, a lower back section coupled to the base and positioned to lie at an angle relative to the bottom seat portion, and a headrest coupled to the lower back section for up and down movement relative to the base and the lower back section. The juvenile seat also includes a height-adjustment mechanism coupled to the headrest for up and down movement with the headrest to adjust the height of the headrest above the bottom seat portion. The height-adjustment mechanism is movable between a locked position to prevent up and down movement of the headrest relative to the lower back section and an unlocked position to permit up and down movement of the headrest relative to the lower back section.

Abstract: When a vehicle is rear-ended and a seated user moves rearward in reaction to the rear-end collision, a load movement of a lumbar part of the seated user is sufficiently transmitted from a pressure plate of operating force generating means to an operating force generating mechanism, regardless of an amount of rearward tilting of a seat back. Then, a pressure roller serving as a driven member of the operating force generating mechanism largely deflects and sufficiently pulls inner cables of respective pulling cable devices, thereby smoothly moving both end portions of a headrest frame upward. As a result, the headrest frame is moved upward smoothly and reliably, and a headrest is moved in an upward-forward direction, that is, toward the head of the seated user smoothly and reliably.

Abstract: A head rest for a car seat used to transport a child in an automobile is positionally adjustable vertically along the seat back on which the head rest is mounted. A latching mechanism, actuated by a button at the top of the head rest, is located within the frame of the head rest and includes a releasable latch engagable with the channels slidably supporting the support rails of the head rest. A retainer clip is mounted at the top of the channels to prevent the head rest from being separated from the seat back once assembled thereon. The head rest includes a pair of laterally spaced wings that are pivotally connected to the rear support portion of the head rest to be positionally adjustable relative to the child's head through an angular displacement of approximately 45 degrees. The pivot mechanism is operable to lock the wings in the selected position.

Abstract: A head restraint guide system is provided to reduce or eliminate contact points between an armature of a head restraint and a housing in a vehicle seat assembly. The housing extends through a seat back frame. In a first embodiment, a retainer is secured to the housing and a washer is seated within the retainer. A retaining cap closes and maintains the washer within the retainer. The armature extends through the guide system contacting only the washer, thus eliminating vibrations and noise due to contact between the armature and the attachment tube. The washer comprises a non-rigid material, preferably felt. In a second embodiment, an elongated sleeve comprising a non-rigid material, preferably felt, is seated within the housing. The sleeve receives and surrounds the armature to eliminate contact points between the armature and the housing, thereby eliminating vibrations and noise therebetween.

Abstract: A head restraint system for an automotive vehicle seat includes a headrest carried upon eccentric mounting posts which may be extended telescopically from a seatback and rotated about their base axes so as to reposition the headrest not only vertically, but also horizontally. A sensor mounted in the headrest feeds back the location of an occupant's head to a system controller.

Abstract: A headrest height adjustment device includes a base member fixed on a seatback of a seat body, a pulley rotatably supported by the base member, the pulley being rotatable in a first direction by unwinding a first end of a rope member wound around the pulley and winding a second end of the rope member in conjunction with sliding movement of the seat body, and the pulley being rotatable in a second direction by winding the first end of a rope member and unwinding the second end of the rope member in conjunction with sliding movement, a rotational arm rotatably supported by the base member and rotated by the pulley by a rotation transmission member, and a conversion member engaged with the rotational arm for operating a headrest in an upward or downward direction by converting rotational movement of the rotational arm into linear movement.

Abstract: A vehicle seat assembly includes a seat back frame having an aperture extending therethrough, and a head rest guide tube disposed in the aperture. The guide tube has a radially extending swaged portion engaged with the seat back frame for securing the guide tube to the seat back frame.

Abstract: A vehicle seat assembly includes a seat bottom and a seat back pivotally attached to the seat bottom. The seat bottom includes a track having a longitudinal track axis. The seat assembly further includes a head restraint moveably attached to the track such that the head restraint is moveable longitudinally along the track from a use position to a stowed position. An actuation device is associated with the head restraint for moving the head restraint from the use position toward the stowed position when the seat back pivots toward the seat bottom.

Abstract: Provided is an automobile headrest which can be prevented from being drawn out inadvertently or on purpose, and can be drawn out through a special operation if necessary. The automobile headrest includes a falloff preventing mechanism that can be composed of the same components as those of a height adjusting mechanism to be used. In the automobile headrest, a headrest stay is inserted in a headrest bush provided with a height adjusting mechanism. The headrest stay is provided with a height adjusting notch and a falloff preventing notch. The height adjusting mechanism can also serve as one headrest falloff preventing mechanism, so the height adjusting mechanism can lock and unlock the headrest. Another headrest stay is provided with a falloff preventing notch. Another headrest bush in which the other headrest stay is inserted is provided with the headrest falloff preventing mechanism including a lock member.

Abstract: A headrest support assembly for a seat apparatus capable of positioning the headrest in a variety of positions, including a position that provides headrest support to raise the head while the seat is in a reclined position.

Abstract: An infant car seat having a headrest that can be manually adjusted to accommodate infants of different heights. The headrest has a lever with a prong that engages a series of pockets in the seat body, allowing the headrest to be fixed in several different positions. The car seat can have removable armrests that slide into openings in the sides of the seat body and lock in place. The car seat can have a foldable cup holder that clips onto the side of the seat body.

Abstract: An automotive seat assembly is provided including a left rear seat portion including a left rear seat base and a left rear seatback, a right rear seat portion including a right rear seat base and a right rear seatback, and a center rear seat portion including a center rear seat base and a center rear seatback. A head restraint assembly is mounted to the center rear seatback and defines a head restraint protrusion distance above the upper seatback surface. The head restraint assembly is movable between a head restraint operational position and a head restraint stowed position. The head restraint stowed position reduces the head restraint protrusion distance for improved visibility. A convenience feature assembly is formed within the center rear seatback and is movable between an convenience feature stowed position and an convenience feature deployed position.

Abstract: Vehicle seat includes a seat portion and a backrest having a height-adjustable headrest. To facilitate the height adjustment of the headrest, two retaining rods are fit into nonreclining sleeves, and have spaced apart arresting notches on a lower portion of the retaining rods. The headrest can be set at any height by use of a locking mechanism on the upper surface of the backrest. The locking mechanism includes a base nonrotably secured to the backrest that includes a base portion and a spaced apart covering portion. The base portion and covering portion are connected via a central pillar to form one piece. The locking mechanism includes a spring with an arresting arm and a retaining arm configured to be mated with respective walls of the column, and biased by a bulge on the column. A cover ring having engaging elements engages the base, and may have spaced apart engaging fingers.

Abstract: A headrest is supported by a first rod and a second rod, the first rod being equipped with a series of positioning notches on a first side and a retaining notch on a second side. In operation, the two rods are installed into two channels in the seat, one of the channels being equipped with a headrest guide assembly. The headrest guide assembly includes a button that allows the user to selectively engage the series of positioning notches on the first side of the first rod so that the headrest can be positioned as desired. However, the headrest guide assembly will automatically engage the retaining notch on the second side and thus prevent the headrest from being removed from the seat. To remove the headrest, a tool can be inserted into a notch in the button and to insertion of the tool prevents the headrest guide assembly from engaging the retaining notch on the second side and thus the headrest can be removed.

Abstract: A head restraint assembly for a vehicle seat assembly including a post to operatively engage a vehicle seat and provide vertical movement relative thereto. The post includes a control leg, a slave leg and a contoured cross member disposed therebetween. Each of the legs has a terminal end and an offset disposed between the terminal end and the contoured cross member. The head restraint assembly further includes a bun attached to the post. The offsets advance a portion of the post and the contoured cross member toward a seat occupant to facilitate placement of a predetermined portion of the bun relative thereto and substantially reduce head displacement during a rear end vehicular collision.

Abstract: A headrest assembly that includes a head support connected to a rail that is adjustably mounted to a housing so that the headrest assembly is capable of moving between a use position and a stow position. A lock member engages the rail in the use position and operably disengages the rail to initiate the movement from the use position to the stow position. Specifically, the rail is biased to a stow position so that disengaging the lock member from the rail moves the headrest assembly from the use position to the stow position. The headrest assembly is also coordinated into a seat assembly such that the movement of a seatback from a use position to a stow position concurrently causes the headrest assembly to move from the use position to the stow position.

Abstract: An automotive seat includes a seat cushion, a seat back, and a multi-position head restraint mounted to the seat back that is moveable between a deployed position and a retracted position. The seat assembly is characterized by a control mechanism mounted within the head restraint that allows the head restraint to be easily movable between the deployed and retracted positions. The control mechanism allows the passenger to place the head restraint in the retracted position by pushing down on the head restraint when the head restraint is in the deployed position. The passenger simply uses an actuation lever of the control mechanism to place the head restraint in the deployed position when the head restraint is in the retracted position.

Abstract: A headrest mechanism including 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. A 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 headrest lock structure has a plurality of lock slots formed in a line along the axial direction of a cross-sectionally circular headrest pole and a lock plate is adapted to fit into one of the lock slots. Each lock slot has a bottom surface protruding in an arc within a region concaved from the outer peripheral surface of the headrest pole by a given distance, and a side surface formed on at least one of the sides of the bottom surface in the axial direction of the headrest pole to extend at approximately a right angle with the bottom surface. The lock plate has an arc-shaped concave portion corresponding to the profile of the bottom surface of each lock slot, and a flat portion corresponding to the side surface of each lock slot. The headrest lock structure can reliably prevent unintentional release of headrest lock.

Abstract: An automotive seat assembly comprising a seat back frame, a headrest, and at least one post supporting the headrest on the seat back frame for vertical adjustment. The seatback frame has at least one opening for receiving the post. A tubular bushing is disposed in the opening of the seatback frame where the opening has a bore for receiving the post. The tubular bushing has a spring disposed in the bore, wherein the spring is used to adjust a clamping force on the post allowing vertical movement of the headrest.

Abstract: A piece of furniture has a seat back having a front face and a headrest having a front face and positioned above the seat back with the front faces both facing forward. A guide forces displacement of the headrest relative to the seat back in a continuous and synchronous tipping/sliding movement between a lower position with the headrest relatively closely juxtaposed with the seat back and with the front faces generally parallel and an upper position with the headrest spaced above the seat back and the front faces forming a large acute angle. An upholstery cover is stretched as a single piece over the front faces of the headrest and the seat back.

Abstract: A head restraint guide system is provided to reduce or eliminate contact points between an armature of a head restraint and a housing in a vehicle seat assembly. The housing extends through a seat back frame. In a first embodiment, a retainer is secured to the housing and a washer is seated within the retainer. A retaining cap closes and maintains the washer within the retainer. The armature extends through the guide system contacting only the washer, thus eliminating vibrations and noise due to contact between the armature and the attachment tube. The washer comprises a non-rigid material, preferably felt. In a second embodiment, an elongated sleeve comprising a non-rigid material, preferably felt, is seated within the housing. The sleeve receives and surrounds the armature to eliminate contact points between the armature and the housing, thereby eliminating vibrations and noise therebetween.

Abstract: A headrest (1) for a seat (3), preferably a passenger seat, particularly an air passenger seat, includes at least one tilt adjusting device (27) and one height adjustment device (12) for adjusting the tilt or the height of the headrest (1) relative to the backrest (2) of the seat (3) on which the headrest (1) can be placed. A swiveling axis (28) for tilt adjustment of the headrest (1) is on guiding part (14), while pointing away from the headrest. The guiding part displaceably interacts with a longitudinal guide (13) and, together with this longitudinal guide, is part of the height adjusting device (12). The backrest structure can have a highly simplified design due to the longitudinal guide (13) being an integral part of the headrest (1) and the swiveling axis (28) of the guiding part (14) being fixed relative to the backrest (2), and since the frame of the backrest does not require any reinforcing structures or guide rails for accommodating a headrest.

Abstract: A headrest arrangement for a vehicle seat consisting of a back and a bottom seating part. Said arrangement comprises a headrest part that is connected to the back of the seat, with the connection configured in such a way that the headrest part can be moved between an in-use position arranged above the back of the seat and corresponding to its headrest function and a non-use position wherein the headrest part can be releasably locked in both positions. The headrest part in non-use position and relative to the in-use position is lowered in the direction of the seating part and is arranged horizontally in the area of the front part of the back of the seat. The invention also relates to a vehicle seat fitted with said headrest arrangement.

Abstract: A headrest device includes a headrest provided over a seatback of a seat, a sliding means for slidably adjusting the seat in back and forth directions, a position-adjusting means for adjusting position of the headrest, and a connecting mechanism connecting the sliding means and the position-adjusting means. The connecting mechanism operates the position-adjusting means in conjunction with operation of the sliding means. The connecting mechanism moves in a first direction when the sliding means moves forward, and the connecting mechanism moves in a second direction when the sliding means moves backward.

Abstract: Headrest for vehicle seat, having generally “inverted L” shape in section comprising a horizontal top portion and a vertical support portion. A headrest stay element provided to the horizontal top portion is slidable vertically on a seat back. The vertical support portion is rotatable or swingable relative to the horizontal top portion in forward and backward directions, and normally biased in the forward direction so as to resiliently support a head, shoulder and upper back portions of a seat occupant without giving unpleasant protrusive touch thereto. The headrest stay element is operatively connected with a seat cushion of the seat, such that flipping over of the seat cushion automatically causes the headrest to lower to the seat back, thereby allowing the seat back to fold down without contact of the headrest with the seat cushion.

Abstract: A juvenile vehicle seat includes a seat shell having a seat bottom and a back support coupled to the seat bottom. A headrest of the juvenile vehicle seat is coupled to the seat shell for up-and-down movement relative to the seat shell to adjust a height of the headrest above the seat bottom of the seat shell. The juvenile vehicle seat further includes a height-adjustment mechanism arranged to adjust the height of the headrest above the seat bottom. The height-adjustment mechanism is arranged to move between a locked position to prevent up-and-down movement of the headrest and an unlocked position to permit up-and-down movement of the headrest.

Abstract: A vehicle headrest apparatus has a headrest unit mounted to an upper end of a seatback. The headrest unit has a headrest members with a head restraining member configured to be tensioned to restrain a passenger's head upon a rear-end collision. The headrest unit quickly and reliably restrains a seated passenger's head during a rear-end collision without utilizing the inertia force of the passenger's body by detecting the rear-end collision and pushing the headrest unit only outward in the forward direction of the vehicle. The headrest unit also has a swing/pushup device that to pushes the headrest members upwardly and forwardly. An auxiliary swing force adding device applies an auxiliary spring force in the deployment direction of the headrest members to increase the deployment speed of the headrest members and shorten the amount of time required to achieve initial contact between the passenger's head H and the head restraining member.

Abstract: A neck rest includes first and second supports having first and second positions where the supports are at approximately the same level and the second support is elevated relative to the first support, respectively. A first spring is supported by the first support and rotatably connected to the second support to bias the second support into the second position. A movable locking element biased by a second spring on the first support automatically blocks the second support in the second position. A locking element is movably supported by the first support and cooperates with a projection of the second support to lock the second support in the first position. A releasing element is movably supported by the first support and releases the locking element when actuated. A supporting member is located between the supports in the second position for transferring shock forces from the second support to the first support.

Abstract: An automotive seat assembly is provided including a seatback assembly including an upper seatback surface and a guide stem positioned within. A head restraint post is positioned within the guide stem, and includes a head restraint mount end and a seatback insertion end. A head restraint element is mounted to the head restraint mount end. A roller guide is mounted in proximity to the upper seatback surface and comprises a bezel element inserted into the guide stem. A primary roller housing is mounted to said bezel element and forms a center cylindrical path through which the head restraint post passes. A primary roller element is rotatably mounted within the primary roller housing and is biased into communication with the head restraint post by way of a roller bias such that the head restraint post is restrained from motion absent the application of a vertical adjustment force. A housing cap is mounted over the bezel element.

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: The invention relates to a medical or dental treatment chair (1) having a seat part (2), a back part (4), a carrier part (16) arranged on the back part (4), an intermediate lever (23) which with its one end is pivotably connected with the carrier part (16), a head support lever (24) which with its one end is pivotably connected to the other end of the intermediate lever (23) and carries a head support pad (21), and an intermediate lever adjustment motor (M3) which is effective between the carrier parts (16) and the intermediate lever (23). For the support function there is provided a head support lever adjustment motor (M4) which is effective between the intermediate lever (23) and the head support lever (27).

Abstract: A headrest for use with a seat back, preferably for a rear seat of an automobile, having a mount operatively attached to the seat back and a headrest pivotably mounted so that it may pivot or swivel forward about a swivel axis. In a use position, a spring places pressure or a load on the headrest, and may be engaged or locked against folding forward because of the spring. When the headrest is lowered below a minimum heigth, the headrest is automatically unlocked or disengaged, and the headrest moves forward generally perpendicular with the seatback under the force of the spring. The mount is adjustable in height, and the headrest is automatically released from the engaged or locked position when the headrest is lowered below a minimum height.

Abstract: The headrest (2) is liftable, comprises wings (11) and (12) and is provided with passages (3) for the belting (C) of the motorcar's safety belt. The backrest (1) does also characteristically comprise passages (4) for the belting (C) of the motorcar's safety belt, these latter passages because of the fact of being positioned in a lower position as compared with those of the headrest (2) being provided to be used when the child is of a short size so that it can thus be properly held back by the safety belt. A characteristic feature also lies in the fact that the wings (11) and (12) are fitted in a linked connection to the sides of the headrest (2), this latter having a mechanism (13, 14, 15 and 18) linking them to each other and locking them thus selectively setting them at a given angle with respect to the headrest (2).

Abstract: There is provided a headrest support structure for attaching a headrest to a car seat. It comprises a headrest 20; a headrest stay 21; a height regulating engagement portion 21b; a first slip-off preventing engagement portion 21c; a tubular member 12 for engaging the headrest stay. The tubular member is vertically provided in the car seat. The headrest support structure also has a first locking member operating unit 32 provided on the upper end of the tubular member; and a first elastic member 32c for forcing the first locking member toward the headrest stay, for engaging the height regulating engagement portion or the first slip-off preventing engagement portion. By an pushing operation from the outside, the first locking member is moved back to release the height regulating engagement portion or the first slip-off preventing engagement portion.

Abstract: A height-adjustable armrest for a chair includes a body, a coupling seat, and an adjusting device mounted to the coupling seat. The body includes an arm support section for supporting an arm of a user. The body further includes a tubular section having a vertical slot with a plurality of vertically spaced positioning grooves. The coupling seat includes a longitudinal hole so as to be mounted around the tubular section of the body. The adjusting device includes a push button and a positioning member having a positioning section that is releasably and selectively engaged in one of the positioning grooves. The positioning section of the positioning member is disengaged from the positioning grooves when the push button is pushed, allowing adjustment of a height of the body.

Abstract: A torqued, error proofed for installation, chuck free helical head restraint guide that includes a head restraint guide assembly with at least two stems, a button sub assembly, and a bezel. The stems include a helix at one end of each stem and a multi-point socket head, an open wrench flat, and/or an internal torx head and crush ribs at the other end. The head restraint guide also includes a motor vehicle passenger seat that includes an upper cross member of a back frame with upper and lower openings. The head restraint guide further includes a head restraint assembly with head restraint posts and a head restraint pad.