Abstract: A seat belt buckle rotation angle restriction mechanism includes a shaft portion fixed to one of the seat support member and the buckle support member, a bearing portion provided at the other one of the seat support member and the buckle support member, the bearing portion accommodating the shaft portion in such a manner that the shaft portion is rotatable, at least two rotational side surfaces provided at one of outer contact surfaces of the shaft portion and inner contact surfaces of the bearing portion, the two rotational side surfaces being symmetric about a rotational center of the buckle support member, and at least two block side surfaces provided at the other one of the outer contact surfaces and the inner contact surfaces, the two block side surfaces being symmetric about the rotational center, each block side surface forming a predetermined angle with each rotational side surface.

Abstract: A seat position adjusting apparatus for a vehicle includes a lower rail, an upper rail moved relatively with the lower rail, a locking mechanism restricting relative movement between the lower rail and the upper rail and releasing restriction on the relative movement, an operating member releasing restriction of the locking mechanism on the relative movement between the lower rail and the upper rail, a position memorizing mechanism for memorizing a position of the upper rail relative to the lower rail, a memorized position releasing member releasing the memorized position of the upper rail relative to the lower rail, wherein the position memorizing mechanism includes a movable member, an engaging member and a biasing member that has a first operating arm portion and a second operating arm portion that are positioned at two points on the engaging member with maintaining a predetermined distance therebetween in order to exert the operation force at the two points.

Abstract: In a seat sliding device having a lock mechanism disposed within an inner space defined by an upper rail and a lower rail, to tilt a lock lever from the inner space toward the outside of the rails, a torsion bar 40 is used as urging means for urging the lock lever 31 in the lock mechanism 30. When an operation lever 50 is in its inoperative state, the lock lever is urged by torsional force of the torsion bar in its locking direction, claws 32 are fitted into engaging holes 11a and 21a, from the inside of the lower rail 10 and upper rail 20 toward the outside of the rails, to be placed in its locking position. When the operation lever is operated, the lock lever is tilted against the torsional force of the torsion bar, the fitted state with the claws being fitted into the engaging holes of both rails is released, to make the upper rail movable relative to the lower rail.

Abstract: A seat reclining apparatus includes a pair of first arms, a pair of second arms, a pair of hinge pins, a pair of reclining mechanisms including a pair of lock mechanisms, each of which includes a cam, the lock mechanism restricting a rotational movement of the seat back relative to the seat cushion and releasing a restriction of the rotational movement, by means of a rotational movement of the hinge pins and the cams, and a connecting member provided between the reclining mechanisms and connected to the hinge pins, wherein each of the hinge pins is structured so as to be inserted into each of the reclining mechanisms from an inward of the seat, and a connecting portion is provided at an inner end of at least one of the hinge pins facing the other one of the hinge pins and is connected to the connecting member.

Abstract: A seat slide apparatus for a vehicle includes a first rail adapted to be securely mounted on one of a vehicle floor and a seat, a second rail adapted to be securely mounted on the other of the vehicle floor and the seat and movably assembled relative to the first rail, a first bent portion formed at the first rail, a pair of second bent portions respectively formed at the second rail at longitudinal sides of the first bent portion of the first rail so as to contact the first bent portion to restrict further relative movement of the first and second rail, and a relief portion provided at one of the first and second rails so as to face one of the second and first bent portions, respectively.

Abstract: A seat sliding apparatus for a vehicle, includes: restraining means for restraining a sliding movement of an upper rail in a front-rear direction of a seat and having a first projection preformed at the upper rail and second projections preformed at a lower rail before assembling the upper and lower rails; and a slide supporting member disposed between the upper rail and lower rails, supporting the upper rail to be slidable in the front-rear direction relative to the lower rail and positioning the upper rail to the finally assembled position in the vertical direction. The lower rail and the upper rail are structured in a way that an interval between the first projection and each second projection along the vertical direction in which the upper rail moves between the insertion position and the finally assembled position is greater than zero.

Abstract: A seat slide device for a vehicle capable of preventing generation of noise includes lower rails, upper rails, lock mechanisms, release levers, and stoppers. Each lock mechanism includes a plurality of lock holes provided on the lower rail and arranged in the longitudinal direction of the lower rail and a lock lever provided on the upper rail to be pivotable about a pivot axis extending in the longitudinal direction of the upper rail for engagement with and disengagement from the lock holes. Further, each release lever pivots the lock lever to release the engagement of the lock holes with the lock lever, and each stopper restricts the position at which the release lever remains separated from the lock lever. At least contact portions of the release lever with the lock lever and the stopper are provided with a coating layer made of a resin.

Abstract: A seat device for a vehicle includes a lower frame, a slide mechanism, a reclining mechanism for supporting a seatback relative to a seat cushion with a reclined angle and holding the seatback to a predetermined position, a slide lock mechanism for restricting the movement of the lower frame and holding a seat to a predetermined position relative to a vehicle floor and a walk-in mechanism disposed between the reclining mechanism and the slide lock mechanism for releasing the restriction of the movement of the lower frame by operating the slide lock mechanism in association with the reclining movement of the seat. The walk-in mechanism includes a first link rotatably supported by the shaft member and operatively connected to the reclining mechanism and the slide lock mechanism to transmit a power from the reclining operation of the seatback to the slide lock operation of the slide lock mechanism.

Abstract: A vehicle seat position adjusting device includes a slide adjuster having a slide lock mechanism, a reclining adjuster, and a walk-in mechanism disposed between the slide adjuster and the reclining adjuster. The walk-in mechanism includes a detecting plate for detecting rotation of the seat back relative to the seat cushion and the reclining adjuster includes a lower plate supported by the seat cushion, an upper plate supported by the seat back and rotatably supported on the lower plate, and a supporting surface formed in the upper plate or the lower plate which rotatably supports the detecting plate without increasing an axial width of the vehicle seat adjusting device.

Abstract: A vehicle seat having a seat cushion may include a pair of slide devices disposed on a vehicle floor, a pair of lock devices respectively provided to the slide devices, and an operation mechanism of the lock devices. The slide devices are arranged and constructed to slide the vehicle seat on the vehicle floor. The lock devices are capable of releasably locking the vehicle seat at a desired position on the vehicle floor. The operation mechanism includes a synchronization member having an operation member. The synchronization member is disposed above the slide devices and is linked to the lock devices via a linking mechanism.

Abstract: A reclining apparatus for a vehicle seat includes a lower plate, an upper plate rotatably supported by each lower plate, a cam for restricting or permitting rotation of each upper plate relative to each lower plate, a connecting shaft fitted to each cam with a fit clearance for integrally rotating each cam and a spring wound around a rotational axis of each cam for biasing each cam in a rotational direction in which rotation of each upper plate relative to each lower plate is restricted. A first end of each spring is engaged with each lower plate and a second end of each spring is engaged with each cam. The spring includes a pressing portion for pressing the connecting shaft so that a play corresponding to the fit clearance between each cam and the connecting shaft can be eliminated.

Abstract: A seat slide device for a vehicle includes a lower rail, an upper rail movable relative to the lower rail and a lock member for restricting the relative movement of the upper and lower rails. The restriction of the relative movement can be released and the lock-released position can be retained. The seat slide device further includes a memory piece detachably engaged with the lower rail and provided in a direction separating from the lower rail and engaging therewith when a seatback is reclined forward, wherein the memory piece is moved in association with the movement of the upper rail by retaining the memory piece at the receiving portion and the shaped portion when the memory piece is separated from the lower rail and wherein the memory piece is engaged with the lower rail at the engaging portion when the memory piece is engaged with the lower rail.

Abstract: A seat apparatus for a vehicle includes a seat cushion, a lower arm, a seat back, an upper arm, an intermediate arm, a reclining mechanism, and a lock mechanism. The lock mechanism includes a first plate member, a second plate member, and a pawl gear. The first plate member is fixed to one of the upper arm and the intermediate arm to be provided therein with a plurality of internal tooth sections each of which has a plurality of teeth with different widths. The second plate member is fixed to the other one of the upper arm and the intermediate arm so as to be supported by the first plate member to rotate relative thereto. The pawl gear is supported by the second plate member and has an external tooth section each of which has a plurality of teeth with different widths for engaging with the internal tooth sections.

Abstract: A seat sliding apparatus for a vehicle includes a lower rail, an upper rail, a block, and a raised portion. The lower rail is adapted to be fixed to a vehicle floor. The lower rail with a U-shaped cross section has an end and a bottom wall. The upper rail is adapted to be fixed to a seat and supported in the lower rail to be movable relative to the lower rail. The block is fixed to the lower rail and includes an inclined face extending away from the bottom wall of the lower rail as the inclined face approaches the end of the lower rail. The raised portion is formed by cutting the bottom wall of the lower rail and folding the cut wall inward the lower rail to fix the block to the lower rail. Accordingly, a foreign object within the lower rail can be removed without blocking the movement of the upper rail relative to the lower rail.

Abstract: A seat reclining apparatus for a vehicle includes a first plate held at one of a seat cushion frame and a seatback frame, a second plate held at the other one of the seat cushion frame and the seatback frame, a pole having an external tooth facing the internal tooth, a first protrusion provided at the pole, a restricting portion provided at the second plate so as to face the first, the restricting portion coming in contact with the first protrusion so that the internal tooth and the external tooth are prohibited from being engaged, a second protrusion provided at the pole, and a stopper portion provided at the second plate for keeping a rotational angle of the second plate relative to the first plate at a predetermined angle upon a contact with the second protrusion.

Abstract: A seat reclining apparatus for a vehicle includes: a first plate adapted to be mounted on one of a seat cushion and a seat back and having inner teeth; a second plate adapted to be mounted on the other one of the seat cushion and the seat back and supporting the first plate to be rotatable; a pole directly and movably supported by the second plate and having outer teeth engageable and disengageable with the inner teeth of the first plate; a pair of guides formed at the second plate and interposing therebetween the pole from both sides, the guide including a pole sliding surface adjusted to slidably come in contact with a side surface of the pole; and a recess formed at the pole sliding surface of the guide.

Abstract: A seat apparatus for a vehicle having a seat cushion on which an occupant is seated, includes a pad forming a seating surface, a cover for covering the pad, a frame positioned below the pad at each side of the seat cushion, relative to a width direction of the seat cushion and including a main body forming a side wall which extends in vertical and longitudinal directions relative to the seat cushion and an aperture formed at the main body, and a retainer attached to an end portion of the cover and retained at a peripheral portion of the aperture for fixing the cover to the frame.

Abstract: A seat status detecting device includes a seat status detecting device includes a seat slide portion provided at a seat, a magnetic sensor provided at the seat slide portion for detecting a seat status, and a protective cover assembled to the magnetic sensor for surrounding the magnetic sensor.

Abstract: A seat belt buckle rotation angle restriction mechanism includes a shaft portion fixed to one of the seat support member and the buckle support member, a bearing portion provided at the other one of the seat support member and the buckle support member, the bearing portion accommodating the shaft portion in such a manner that the shaft portion is rotatable, at least two rotational side surfaces provided at one of outer contact surfaces of the shaft portion and inner contact surfaces of the bearing portion, the two rotational side surfaces being symmetric about a rotational center of the buckle support member, and at least two block side surfaces provided at the other one of the outer contact surfaces and the inner contact surfaces, the two block side surfaces being symmetric about the rotational center, each block side surface forming a predetermined angle with each rotational side surface.

Abstract: A seat position adjusting apparatus for a vehicle includes a lower rail, an upper rail moved relatively with the lower rail, a locking mechanism restricting relative movement between the lower rail and the upper rail and releasing restriction on the relative movement, an operating member releasing restriction of the locking mechanism on the relative movement between the lower rail and the upper rail, a position memorizing mechanism for memorizing a position of the upper rail relative to the lower rail, a memorized position releasing member releasing the memorized position of the upper rail relative to the lower rail, wherein the position memorizing mechanism includes a movable member, an engaging member and a biasing member that has a first operating arm portion and a second operating arm portion that are positioned at two points on the engaging member with maintaining a predetermined distance therebetween in order to exert the operation force at the two points.