Abstract: A mechanism for mounting a seat belt of a center seating space of a vehicle seat which exhibits sufficient strength and reduces weight and production costs to the greatest degree is provided. Such a mechanism is provided by separating a seat into a right seating section and a left seating section at the center thereof such that each of the separated seating sections is independently slidable back and forth by means of a seat sliding rail formed of a pair of lower rails fixed to a floor side and a pair of upper rails fixed to the bottom of a seat. A base member bent at an intermediate bent portion defined by a belt mount plate portion and a rail mount connector portion is attached to a side surface of the inner upper rail at the rail connector plate portion such that the belt mount plate portion extends outward. An anchor for the seat belt of the center seating space of the seat is fixed to the top end of the belt mount plate portion of the base member.

Abstract: A seat frame supporting a seat cushion pad formed in a predetermined shape and engaging a skin for covering the pad includes a first roll formed frame having a closed rectangular cross sectional shape and formed so as to extend along the front edge and both side edges of the pad and a second roll formed frame having a closed rectangular cross sectional shape and formed so as to extend along the rear edge of the pad. Both end portions of the first roll formed frame and both end portions of the second roll formed frame are connected to each other. Accordingly, the strength of the seat frame is improved without increasing the weight of the seat frame.

Abstract: To reduce the gap between the floor portion of a cargo compartment in a vehicle and a seat back when the cargo compartment is enlarged by forwardly bringing down the seat back of the passenger seat adjoining the driver or a rear seat, a vehicular seat structure is designed so that when the seat back of the rear seat is forwardly brought down by a predetermined angle, a pin provided on a bell crank is brought into contact with an upper end portion of a second link, and the second link is rotated. As a result, a first link is pulled upward and the bell crank is rotated so that the rear end portion of a slide lock lever is rotated in the direction causing the slide lock to be released. Thereafter, when the seat back is brought down further forwardly, a connecting member which can be in the form of one or more belts moves the seat rearwardly. A stopper contacts the first link and the movement of the seat is stopped.

Abstract: A locking mechanism used in a vehicle for locking and unlocking a movable structure to a fixed structure includes a base plate secured on the movable structure, a striker secured on the fixed structure, a latch rotatably supported on the base plate to engage the striker, and a pawl rotatably supported on the base plate to maintain engagement between the striker and the latch. A cam member is rotatably supported on the base plate to pinch the striker together with the latch.

Abstract: A vehicle seat unit with a forwardly tiltable seat cushion which is easy to handle and which is capable of being fastened securely to a vehicle floor. A pair of hook members provided at the rear portion of the seat cushion are engageable with and disengageable from a pair of strikers fixed to the vehicle floor and a pair of stop pins provided on the vehicle floor are engageable with and disengageable from another pair of hook members provide at the front portion of the seat cushion through handles, respectively.

Abstract: A pin secured at one end of a link is inserted into an L-shaped groove of a ock lever pivoted to the upper surface of an upper guide rail and the other end of the link is connected to an actuator by way of a wire. The hook of the lock lever can be inserted into the hook hole of the flange of the lower guide rail. Rotating of the lock lever and thus rotation of the upper guide rail relative to the lower guide rail by an accidental external force to the lock lever can be prevented in the rotatable seat.

Abstract: A seat slide mechanism for vehicles has a lock plate which is disposed to prevent the lock plate from being turned in a direction of releasing an engagement of the lock plate with a lower rail due to a load applied to the upper rail when they are engaged. The vertical wall of the upper rail is disposed between second flange walls in close relation to one of the second flange walls of the lower rail and the lock plate is disposed between the other second flange wall and the vertical wall in close relation to the other second flange wall.

Abstract: A vehicle seat slide mechanism for a vehicle includes a lower rail fixed to the vehicle floor, an upper rail attached to a seat and supported on the lower rail so as to be free to slide thereon, a locking plate disposed between the lower rail and the upper rail and operable to limit sliding motion of the upper rail relative to the lower rail and to free the upper rail from this limitation, an operating lever disposed underneath the seat for operating the locking plate, a converging first wall formed on the locking plate so as to be engageable with teeth, which are formed on the lower rail, in the direction in which the upper rail slides relative to the lower rail, the first wall being so adapted that the teeth assume a first position or a second position, and a second wall formed on the locking plate and capable of engaging the upper rail in the direction of locking plate movement when the teeth are at the second position.

Abstract: A seat reclining device includes a control shaft connectable to an operation member, a lower arm connectable to one side of a seat cushion, an upper arm connectable to one side of a seat back which is able to be inclined relative to the lower arm, a pair of seat declining mechanisms each of which includes an opposite lower arm connectable to the other side of the seat cushion, an opposite upper arm connectable to the other side of the seat back which is able to be inclined relative to the opposite lower arm, the control shaft being inserted through the opposite lower arms and the opposite upper arms, each of the seat reclining mechanisms including a cam member connected to the control shaft to be rotated with the control shaft and a pawl member slidably disposed in one of the opposite lower arm and the opposite upper arm, the pawl member abutting on the cam member to be slid by the rotation of the cam member, the pawl member being engageable with a ratchet portion disposed on the other of the opposite lower a

Abstract: A seat sliding mechanism includes a pair of lower rails for being fixed to the vehicle floor, a pair of upper rails for supporting a seat, a pair of upper rails slidably mounted on the lower rails, and a pair of locking levers. The locking levers are each movable between an engaging position for preventing the respective upper rail from relative to the respective lower rail and a disengaging position for permitting the respective upper rail to slide relative to the respective lower rail. An operating lever is disposed between the locking levers and is operative to move the locking levers between the engaging and disengaging position. A play mechanism is also provided for engaging the operating lever with the locking levers to permit the operating lever to move relative to the locking levers.

Abstract: A seat device for mounting on a vehicle-floor including a first engaging member fixed to a front portion of a seat and detachably engaged with a fastening portion of the vehicle-floor, a second engaging member pivoted to the first engaging member and having one end engagable with the fastening portion of the vehicle-floor and the other end being in contact with the vehicle-floor, an urging member for biasing the one end of the second engaging member toward the fastening portion of the vehicle-floor, and a fixing mechanism provided at a rear portion of the seat for engaging or disengaging the seat from the vehicle-floor.

Abstract: A seat sliding apparatus for a vehicle includes a pair of lower rails for being fixed on a floor of the vehicle, a pair of upper rails for being fixed to a seat cushion each of slidably engaged with the corresponding lower rail, a pair of front rollers each of rotatably supported on a front portion of the lower rail so as to support the upper rail and a pair of rear rollers each of rotatably disposed between the upper rail and the lower rail.

Abstract: A seat reclining apparatus includes a release lever provided on one side of a pair of lower arms, a lever corresponding to the release lever provided on the other side of the pair of lower arms, a connecting bar consisting of a torsion rod connecting the two levers, and a pawl cooperating with each lever. A cam member is combined with each pawl by being placed in a cam slot of the pawl, the combination is provided on both lower arms and the cam members are connected by the connecting rod. The release lever is connected solely to one of the cam members.

Abstract: An acceleration sensor having a sensor body rotatably mounted in a casing. A sensing ball is mounted in the sensor body for detecting acceleration. A balancing weight is secured to the sensor body for continuously orientating the sensor body in a horizontal direction in order to prevent the influence of gravity acceleration on sensing ball.

Abstract: A seat apparatus for an automotive vehicle includes an upper gear fixed to a side member of a seat-back frame equipped with a retractor, a lower gear engaging with the upper gear, a pair of lower arms embracing the upper gear and the lower gear, a shaft having a coaxial shaft portion on which the pair of lower arms is supported and an eccentric shaft portion on which the upper gear is supported, a release arm supported on the coaxial shaft portion and having a distal end to which a first pin is fixed, the first pin being inserted into first registered oblong holes of the pair of lower arms, a second pin passed through a cam slot of the release arm and second registered oblong holes of the pair of lower arms, the second pin being capable of freely entering and exiting a notch in the lower gear, and a third oblong hole provided in the lower arm for receiving a third pin fixed to the upper gear. At the moment of a collision, a large load from the upper gear is received by the second pin as a shearing force.

Abstract: A vehicle seat having seat cushion portion and seat back portion comprises a main frame including main back frame for the seat back portion and a main cushion frame for the seat cushion portion connected to the main back frame, a sub frame including sub back frame for the seat back portion and sub cushion frame for the seat cushion portion pivotally connected to the sub back frame, the sub frame having a seat cover on which an occupant of the seat sits. The vehicle seat further includes a raising and lowering device provided at the main frame and operatively connected to the sub frame to raise or lower the sub frame with respect to the main frame secured to vehicle body so that the position of main frame may be unchanged even when the position of the sub frame is adjusted for the proper position of the occupant of the seat.

Abstract: A seat belt retractor for reducing the retracting force of a webbing on an occupant, including a casing and a spool rotatably mounted in the casing. A length of the webbing being wound on the spool. A spiral spring connected to the spool biases and rotates the spool in the direction of the winding of the webbing on the spool. A shaft rotatably mounted in the casing engages the spool to provide unitary rotation therebetween. An elastic member connected to the shaft and an inner cylinder engageable with the elastic member reduce the biasing force of the spiral spring when the spool is rotated to retract the webbing.

Abstract: A lumbar support regulating apparatus for a vehicle seat includes a pressing plate rotatably mounted on an offset portion of a rod, the opposite ends of which are rotatably mounted in opposite sides of a seat back frame so that upon rotation of the rod the pressing plate will be moved forwardly and rearwardly. A spiral spring is connected at its inner end to the rod with the outer end being connected to a link which is pivoted on the rod. The free end of the link is connected to a travelling nut which is threadedly mounted on a motor driven screw having suitable limit stops thereon so that upon rotation of the screw the travelling nut will pivot the link to rotate the rod through the spiral spring.