Aisin Seiki Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Aisen Seiki Kabushika Kaisha

Takemi Hattori

Nobuyuki Hashimoto

Nobuhiko Takeda

Reiki Kawamura

Takami Terada

Kenichi Kazaoka

Masatoshi Mori

Kiyoka Matsubayashi

Masaharu Tanino

Hirofumi Kume

Kozo Esaki

In a headrest, a first connecting portion, including a first link and a second link relatively rotatably supported to the first link, is provided between a base portion and a receive portion movable between a first and second positions adjacent to/separate from the base portion. A drive portion drives the first connecting portion through a drive input portion provided at least either one of the first and second links by applying a driving force to the drive input portion in a moving direction of the receive portion toward the second position. First and second end portions of the first link are supported by the base portion and the receive portion through first and second pivot points. First and second end portions of the second link are slidably connected to first and second guide portions respectively provided at the base portion and the receive portion through first and second connecting points.

Headrest

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.

Headrest height adjustment device

A headrest apparatus for vehicles comprises a pair of guide rails connected to a seatback frame, a pair of stays connected to the headrest, a pair of shoes moving along the guide rails, a rod connected at its ends to the shoes, means for moving the rod in an upward and downward direction, a cam member attached at an upper portion of each guide rail for urging the shoes in a horizontal direction and the headrest in an inclined position, and a spring member positioned on the shoes and biasing the shoes in the opposite direction of the direction in which the headrest is urged in the inclined position.

Headrest apparatus

A lumbar support structure of the present invention includes a cam means rotatably supported on bracket to which one end of torsion spring is pivoted. The cam means is actuated by a lever on the side of the seatback to vertically move the lumbar support through cable member connecting the two. The lumbar support structure further includes a cam member pivoted to the bracket and movable in response to caming action of the cam means, and the support plate which is adjustably rotated upon the movement of cam member so that the support plate may be vertically movable to change the contact position with the seatback.

Adjustable lumbar support

A device for adjusting the elevational position of a head rest of a seat for a vehicle having a stay formed with a plurality of grooves along an elevational direction and stood on a seat back of the seat, and a locking mechanism mounted in the shell of the head rest for engaging or disengaging the grooves of the stay by means of the lateral movements of the head rest comprising said stay having right and left vertical rods integrally coupled at the upper poritons thereof with the stay, a bracket member provided in the shell and coupled with the two vertical rods of the stay through two cylindrical supporting members inserted therethrough with the two vertical rods of the stay, a rod penetrated laterally through the shell and the bracket member to be secured to the shell but movably engaged with the bracket member in such a manner that the shell is urged to either leftward or rightward with respect to the bracket member with a gap formed at one side thereof, the grooves are formed at least one vertical rod of the stay, a locking plate formed in the vicinity of the bracket member and coupled with the rod to be engaged with any of the grooves of the vertical rod of the stay by means of urging, whereby the engaging distance of the locking plate with the groove is equal to or substantially smaller than the gap formed at one side thereof.

Device for adjusting elevational position of head rest

A headrest apparatus for vehicles comprising a pair of guide rails connected on a seatback frame and a pair of stays connected to the headrest. A pair of shoes are positioned for movement along the guide rails with each of the shoes supporting a separate one of the stays. A rod member which is connected at its ends to the pair of shoes, and means for moving the rod in an upward and downward direction are provided. The upward and downward movement of the rod moves the shoes in their respective guiderails to raise and lower the headrest. A cam member is attached at an upper portion of each said guide rail for urging the shoes along a selected path and the headrest to an inclined position.

A lumbar support apparatus includes a seat frame, a first wire support member fixed to the frame, a second wire support member attached to the frame and a third wire support member interconnecting the first and second support members. The second support member is movable to a position forward of the seat frame. The movement of the three support members by virtue of the interconnections causes a reduction in the discomfort to a seat occupant.

Lumbar support apparatus

A lumbar support includes a seat back body, a lumbar plate, and plate moving means for moving the lumbar plate back and forth. The plate moving means includes a base portion supported by the seat back body and having a pair of oblong holes, a screw rod supported for free rotation on the base portion and having a male screw on its outer surface, a nut member having a centrally formed female screw threadedly engaged with the male screw, the nut member being moved axially of the screw rod by turning the latter, an anchor member connecting the lumbar plate to the nut member and having a ring-shaped pivot portion at an end thereof on the side of the nut member, and a distance compensating pin passed through the ring-shaped pivot portion and supported at the oblong holes so as to be movable in the longitudinal direction of the oblong holes. When the nut member is moved axially of the screw rod, the distance compensating pin moves longitudinally of the oblong holes so as to compensate for a change in distance between the center of the ring-shaped pivot portions and the center of rotation of the screw rod.

Lumbar support

A seatback spring device for automobiles comprising at least three spring elements of the wave-like form, any one of the spring elements being continuous in a basically longitudinal direction on a substantially common plane, the spring elements being laterally juxtaposed and directly or indirectly linked with a seatback frame at the upper and lower ends thereof, wherein the spring elements at both the sides are disposed so as to form a pair of forwardly flexed or curved planes, and each of the spring element(s) at the central area is provided with a protrusion protruding forwardly at a level corresponding to the waist of an occupant. The device fits to the waist of the occupant to relieve the burden upon waist and lumbar and secure the occupant against lateral swings and vibrations.

Seatback spring device for automobile

A side support assembly for the seat of an automotive vehicle includes a pair of horizontally swingable side support frames provided on the left and right sides of the seat backrest to support a seated individual from the right and left sides, a connecting rod for swinging the side support frames toward or away from each other, and a locking mechanism for locking the side support frames at a position to which they have been set. The locking mechanism is provided on the connecting rod so that the side support frames will support the seated individual with the same rigidity when the individual is forced against them due to an inertial force produced at cornering.

Side support assembly

Changes in the vertical inclination of a lumbar support plate pivotally mounted within a backrest cause different portions of the convex surface of the support plate to contact the back of the lumbar region of the backrest, vertically altering the site of support afforded by the plate. A cable transmits motion of user controls mounted on the outside of the backrest into incremental or continuous rotation of a circular cam. Cam followers on the rear of the support plate translate cam rotation into changes in support plate inclination. The disclosed mechanism is employable simultaneously with controls for rendering the support plate adjustable also in the horizontal direction.

Lumbar support for a backrest

A lumbar support adjusting apparatus has a release plate pressed against a ratchet by a compression spring for urging the release plate under uniform resilient forces, and biased to return in its direction of rotation by a torsion spring, preferably a spiral spring, having one end secured to a shaft and the other end to a support plate. The compression force of the compression spring, and the torsional force of the spiral spring can be set independently of each other. The release plate can turn the ratchet and can be angularly returned to its original position smoothly and reliably without fail.

Lumbar support adjusting apparatus

A lumber support system comprising an air bag disposed behind the upholstery sheet of a vehicle seat, a manual air pump and a valve assembly for controlling the supply of air from the manual air pump into the air bag as well as the discharge of the air contained in the air bag. The valve assembly comprises a valve casing being attached to the vehicle seat and provided with a partition wall partitioning the interior of the valve casing into first and second chambers, an inlet port for allowing the communication of the first chamber with the outlet of the manual air pump, a discharge port for allowing the communication of the first chamber with the exterior of the valve casing, an outlet port allowing the communication of the second chamber with the air bag, a manually operable push button movably supported on the valve casing, a first normally closed valve formed within the first chamber for normally closing to interrupt the communication between the first chamber and the discharge port and adapted to be opened when the push button is depressed manually, and a second normally closed valve formed within the second chamber for normally closing an opening formed on the partition wall to interrupt communication between the first and second chambers therethrough and adapted to be opened when pressurized air is supplied into the first chamber and when the first normally closed valve is opened.

Lumber support system for a vehicle seat

An air bag system includes a plurality of inflatable air bags; an air source for supplying air to said air bags, a branched joint for distributing the air from said air source to said air bags; and check valves, each being provided between said joint and said air bags for allowing the air to flow to air bags from said joint, and openings of ports of said joint to branch pipes being changed in order of inflation of air bags.

Air bag system having a branched joint

An air bag system includes a plurality of air bags; a pump for supplying said air bags with air, check valves, each disposed on respective pipes communicating said pump with the air bags; and relief valves, each for discharging the air from respective air bag. The air bag further includes stop valves, each provided between said pump and respective check valves for inflating each air bag independently. The contour of a seat having air bags contained therein may be changed so as to fit an occupant.

Growing community of inventors

Kariya, Japan

Takemi Hattori