Abstract: A seat back frame includes: a first side member and a second side member each formed into an elongated shape along an up-and-down direction of a seat back so as to support each side portion of the seat back; and a belt guide portion on which tension of a seat belt is applied when the seat belt is pulled, the belt guide portion being formed in an upper portion of the first side member and guiding the seat belt having the one end retained by a seat belt retaining member.

Abstract: A vibration proof structure of a seat apparatus for a vehicle, includes a first member and a second member movably arranged relative to each other in a first relative direction corresponding to a forward movement of a seat element in a front and rear direction of the vehicle and in a second relative direction corresponding to a rearward movement of the seat element in the front and rear direction, a first restriction wall restricting a relative movement of the first member to the second member in the first relative direction, a second restriction wall restricting the relative movement of the first member to the second member in the second relative direction, and a resistance force applying portion applying a resistance force to the first member moving in the first relative direction while not applying the resistance force to the first member moving in the second relative direction.

Abstract: A memory mechanism is provided with engagement portions, a housing recess, a memory plate, and engagement receiving portions. The engagement portions are provided to an adjacent pair of pawls, respectively. The housing recess has a cylindrical shape and is provided to a first member. The memory plate is formed in an annular shape which is cut at one point. The memory plate is housed within the housing recess while being reduced in diameter with the cut portion disposed between the engagement portions. The engagement receiving portions are respectively adjacent between the engagement portions of the memory plate, to the engagement portions. The engagement portions are engaged with and disengaged from the engagement receiving portions as the pawls move in the radial direction.

Abstract: A handle returning apparatus includes an input member rotating in conjunction with an operation handle operated to rotate in first and second directions including a neutral position, and a spring member including a plurality of spring portions integrally formed and including different spring forces, each of the spring portions including first and second spring end portions separating from each other in a circumferential direction and being configured to generate a returning force for returning the operation handle to the neutral position by being resiliently deformed on a basis of the rotation operation of the operation handle to bias the input member in a state where one of the first and second spring end portions engages with the input member and the other engages with a fixation member. The plurality of spring portions is selectively switchable therebetween to generate the returning force depending on a condition of the rotation operation.

Abstract: A seat reclining device includes a pawl having external teeth, a first arm, a second arm, a cam assembly, and a pressing member. The first arm has a pair of guide walls that guide the pawl in the radial direction. The second arm is rotationally supported by the first arm and has internal teeth. When the cam assembly rotates in a forward direction, the cam assembly presses and moves the pawl radially outward to mesh the external teeth with the internal teeth, and presses the pressing member radially outward. When pressed radially outward, the pressing member presses the pawl in the radial direction and a direction from the guide wall towards the pawl. When the cam assembly rotates in a reverse direction, the cam assembly releases the pressing member and moves the pawl radially inward to separate the external teeth from the internal teeth.

Abstract: A seat reclining apparatus for a vehicle includes a first bracket, a plurality of pawls, a second bracket being relatively rotatably placed to face the first bracket, a cam mechanism having outer teeth of each of the pawls engage with and disengage from inner teeth of the first bracket by moving each of the pawls in the radial direction by rotating a cam member, the first bracket including a first circumferential wall portion and a second circumferential wall portion which are formed to include different levels from each other by a deformation processing, and a step portion serving as a fit-in portion and being fitted-in a fit-in recessed portion being provided at a fixed object of a seat, and the step portion including a welding portion at a circumferential edge of the step portion to be welded to the fixed object.

Abstract: A seat slide apparatus for a vehicle includes a tower rail, an upper rail, a memory base arranged above a bottom wall portion of the lower rail, a restriction piece holding the memory base so that the memory base is restricted from moving, a memory pin attached to the memory base in a manner that advance and retract of the memory pin relative to the memory base is allowed, the memory pin engages with the lower rail in a protruding state, the memory pin disengages in a retracted state, an interlocking mechanism pushing a lock member and the memory pin in a forward-folded state of a seatback, and a holding member holding the protruding state of the memory pin and allowing the memory base to move.

Abstract: A seat slide apparatus for a vehicle includes a first rail including a locked portion, a second rail movably connected relative to the first rail and including bearing holes, a lock member including a lock portion and rotating around the bearing holes to engage the lock portion with the locked portion and disengage the lock portion from the locked portion to selectively bring a relative movement between the first and second rail into a locked state, and wherein the second rail includes a fracture opening allowing the shaft portion to shift from the bearing hole in a case where a load is inputted in the direction of the relative movement, and a restriction portion configured to restrict the lock member from rotating in a direction in which the locked state is released in a case where the shaft portion shifts from the bearing hole.

Abstract: A seat slide apparatus for a vehicle includes an upper rail configured to support a seat at an upper portion of the upper rail, a lower rail supporting the upper rail in a manner that the upper rail and the lower rail are movable relative to each other, and a shaft member extended in a lengthwise direction of the upper rail, wherein the upper rail includes a pair of vertical wall portions extended in an upper/lower direction, the upper rail includes a bent portion connecting the vertical wall portions to each other and the shaft member is provided at an inner side of the bent portion, and the shaft member includes a threaded portion provided at each end thereof in an axial direction, the bent portion includes lengthwise-direction-end portions, and the threaded portions of the shaft member face the lengthwise-direction-end portions of the bent portion.

Abstract: A seat slide apparatus for a vehicle includes a lower rail, an upper rail, a lock member, a stopper portion, a lever member that rotates in a release direction in association with a forward folding of a seatback, and a memory link being released from the lever member in a state where the lever member rotates in the release direction and rotating to an engageable position at which the memory link is engageable with the stopper portion, the memory link being configured to pass through the stopper portion in a case where the upper rail moves to a front side of the seat, the memory link engaging with the stopper portion to restrict the upper rail from moving to a rear side of the seat in a case where the upper rail moves to the rear side of the seat after the memory link passes through the stopper portion.

Abstract: A seat reclining apparatus for a vehicle includes a first arm including a guide wall, a second arm including internal teeth and being rotatably supported by the first arm, a pawl including external teeth which are engageable with and disengageable from the internal teeth, a cam engaging with the pawl for causing the pawl to advance and retract along a guide wall and for causing the internal teeth and the external teeth to mesh with and unmesh from each other as the cam rotates, a recessed portion recessed in a direction of an axis line of the second arm and including a restricting portion, an engaging portion restricting the external teeth and the internal teeth from meshing with each other by being in contact with the restricting portion, a hinge cam including a first shaft portion, a second shaft portion and a flange portion, and a biasing member.

Abstract: A seat adjustment apparatus for a vehicle includes a first bracket, a second bracket defining an accommodating void with the first bracket, a pawl, and a pawl reverse spring, The pawl includes a ratchet portion, a pawl side reverse wall portion, and a pawl side return wall portion, the ratchet portion allowing a relative rotation of the first and second brackets in a first direction and prohibiting a relative rotation of the first and second brackets in a second direction in a case where the pawl is biased to rotate in a normal direction, the pawl side reverse wall portion allowing the relative rotation in the second direction so that the pawl is reversed by being biased to rotate in a reverse direction, the pawl side return wall portion bringing the pawl to be returned by being biased to rotate in the normal direction.

Abstract: An engagement section of a pole and a protruding section of an upper arm restrict movement of the pole outward in the radial direction and disable meshing of outer teeth and inner teeth, when the relative rotation angle of a lower arm and the upper arm is within a prescribed range. Outer teeth and the inner teeth of poles cannot engage as a result of the restriction on movement of the pole outward in the radial direction. The amount of movement by the poles separating from the inner teeth along the radial direction is set so as to be greater than the amount of movement by the pole separating from the inner teeth along the radial direction, when the pole reaches a position corresponding to where the outer teeth and the inner teeth cannot mesh as a result of the protruding section, etc., during the unlock operation.

Abstract: A slide apparatus for a vehicle includes first and second rails and a rolling element circulation unit including first and second cases and a plurality of rolling elements accommodated within a receiving portion that includes first and second annular receiving portions accommodating the rolling elements annularly arranged in a rolling and circulating manner. The second case includes elongated bores connected to the first and second annular receiving portions in a state where the second case is mounted at the second rail. A portion of the rolling elements is exposed from the elongated bores while being inhibited from disengaging from the elongated bores. The rolling elements exposed from the elongated bores make contact with an operating surface of the first rail and inner surfaces of the first and second annular receiving portions, and roll and circulate in association with a relative movement between the first and second rails.

Abstract: A seat reclining apparatus for a vehicle: a locking mechanism that is interposed between a seat cushion and a seatback and selectively switches inclining of the seatback between a permitted state and a regulated state with respect to the seat cushion; a first operation member that performs a first unlocking operation which allows the seatback to incline with respect to the seat cushion within a angle range with respect to the locking mechanism; a second operation member that performs a second unlocking operation which allows the seatback to incline with respect to the seat cushion to a forward tilt position exceeding the angle range with respect to the locking mechanism; and a stopper mechanism that regulates a rearward tilt of the seatback at a regulation angle position included within the angle range in a state of the second unlocking operation.

Abstract: A vehicle seat operating device includes: an input side member that performs an operation input; an output side member that is moved based on an operation of the input side member to operate a seat adjustment mechanism; and a speed change mechanism that changes a rate of change of a movement amount of the output side member with respect to an operation amount of the input side member according to an operation position of the input side member.

Abstract: A seat slide apparatus for a vehicle includes: a lower rail freely fixed to a vehicle floor; an upper rail freely fixed to a seat having a seat cushion forming a seating surface and a seatback; and a memory member engaging with the upper rail, wherein the memory member includes: a memory base provided to be movable in a forward-rearward direction of the seat; a memory pin mounted to be movable back and forth in a vertical direction with respect to the memory base; a first urging member urging the memory pin; a locking plate mounted to be movable in the forward-rearward direction of the seat with respect to the memory base; and a second urging member urging the locking plate.

Abstract: A seat slide apparatus for a vehicle includes: a lower rail freely fixed to a vehicle floor and having a pair of first vertical wall portions, a bottom wall portion, and a pair of first flanges; an upper rail fixed to a seat having a seat cushion and a seatback, and having a pair of second vertical wall portions, a lid wall portion, and a pair of second flanges; a locking member connected to the upper rail; a memory piece placed on the bottom wall portion, engages with the upper rail due to an upward urging force by a memory piece urging member; a memory link connected to the upper rail; a lever member connected to an upper portion of the upper rail; and a stopper member fixed to the inside of the upper rail.

Abstract: A vehicle seat sliding apparatus includes: an upper rail configured to freely support a seat thereabove; a lower rail supporting the upper rail in a relatively movable manner, a locking mechanism capable of switching between a lock state where the relative movement of the upper rail with respect to the lower rail is regulated and an unlock state where the relative movement is allowed; and an unlock operation prevention mechanism regulating an unlock operation of the locking mechanism based on a deployment pressure of an airbag which is disposed in a seat cushion.

Abstract: A seat sliding device for a vehicle includes a first rail and a second rail coupled to the first rail to make relative movement with respect to the first rail. A lever is coupled to the second rail to rotate about an axis extending in the widthwise direction, and a lock plate which is fixed to the rear end part of the lever part and arranged between first side wall parts to extend in the widthwise direction astride side wall part through holes and folded wall part through holes. At both edge parts of the lock plate in the widthwise direction, there is formed a latching part which engages with a latched part of the first rail when the lever part rotationally moves in one direction and is released from the latched part when the lever part rotationally moves in the other direction.