Abstract: Provided is a vehicle seat. In the vehicle seat, a tilting member transmits a pivoting force to a back frame. An engagement member is coupled to the back frame, and allows transmission of the pivoting force to the back frame when the engagement member is in the engaged position. A recliner comprises an output gear that moves integrally with the tilting member. An amount of elastic deformation of a fold down spring increases when the back frame pivots in a rearward direction. A first anchoring member is a member that is fixed to the back frame and to which a first end of the fold down spring is anchored. A second anchoring member is a member to which a second end of the fold down spring is anchored and that moves integrally with the output gear.

Abstract: A second bracket of a vehicle seat reclining device includes a first pawl restriction portion and a second pawl restriction portion arranged respectively in correspondence with a first pawl and a second pawl to restrict movement of the first pawl and the second pawl in the radial direction. The second pawl restriction portion is located toward the positive direction and a radially inner side from the first pawl restriction portion. Negative direction ends of the first pawl restriction portion and the second pawl restriction portion are arranged to contact positive direction corners of the limitation portions of the first pawl and the second pawl when a rotation angle of the second bracket relative to the first bracket is a specified angle. The first pawl restriction portion allows movement of the second pawl toward the radially outer side.

Abstract: Provided is a vehicle seat capable of resisting a large load in a forward or rearward direction while reducing increase in size and weight. The vehicle seat comprises a cushion frame, a back frame, a tilting member arranged on a pivot axis of the back frame and configured to transmit to the back frame a pivoting force to pivot the back frame, an engagement member coupled to the back frame and displaceable between an engaged position in which engagement with the tilting member is made and an unengaged position in which the engagement is released, a locking member displaceable between a locking position to retain the engagement member in the engaged position and a non-locking position, and a stopper fixed to the back frame and capable of receiving, through the engagement member, an external force that acts on the engagement member located in the engaged position.

Abstract: When a first memory member rotates relative to a second rotating member to a predetermined relative rotation position at which a second memory member sliding on a sliding surface is capable of entering an engagement slot, the slide-trailing end of the second memory member, which leaves the sliding surface last, is a corner having no round shape. Further, the boundary between the sliding surface and the engagement slot is also a corner having no round shape.

Abstract: Provided is a vehicle seat capable of resisting a large load in a forward or rearward direction while reducing increase in size and weight. The vehicle seat comprises a cushion frame, a back frame, a tilting member arranged on a pivot axis of the back frame and configured to transmit to the back frame a pivoting force to pivot the back frame, an engagement member coupled to the back frame and displaceable between an engaged position in which engagement with the tilting member is made and an unengaged position in which the engagement is released, a locking member displaceable between a locking position to retain the engagement member in the engaged position and a non-locking position, and a stopper fixed to the back frame and capable of receiving, through the engagement member, an external force that acts on the engagement member located in the engaged position.

Abstract: Provided is a vehicle seat. In the vehicle seat, a tilting member transmits a pivoting force to a back frame. An engagement member is coupled to the back frame, and allows transmission of the pivoting force to the back frame when the engagement member is in the engaged position. A recliner comprises an output gear that moves integrally with the tilting member. An amount of elastic deformation of a fold down spring increases when the back frame pivots in a rearward direction. A first anchoring member is a member that is fixed to the back frame and to which a first end of the fold down spring is anchored. A second anchoring member is a member to which a second end of the fold down spring is anchored and that moves integrally with the output gear.

Abstract: A second bracket of a vehicle seat reclining device includes a first pawl restriction portion and a second pawl restriction portion arranged respectively in correspondence with a first pawl and a second pawl to restrict movement of the first pawl and the second pawl in the radial direction. The second pawl restriction portion is located toward the positive direction and a radially inner side from the first pawl restriction portion. Negative direction ends of the first pawl restriction portion and the second pawl restriction portion are arranged to contact positive direction corners of the limitation portions of the first pawl and the second pawl when a rotation angle of the second bracket relative to the first bracket is a specified angle. The first pawl restriction portion allows movement of the second pawl toward the radially outer side.

Abstract: A vehicle seat reclining device is disclosed. An operation mechanism allows a second memory member to engage with and disengage from a first memory member, and locks and unlocks a lock member in conjunction with the engagement and disengagement. When the first memory member is in a predetermined rotational position relative to the second rotating member, the second memory member is inserted into an engagement slot provided in the first memory member, thereby restricting rotation of the first memory member relative to the second rotating member. The operation mechanism includes a link member that is linked to the second memory member inserted into a guide hole provided in a plate-shaped member. In the thickness direction of the plate-shaped member, the link member is arranged on the same side of the plate-shaped member as the first memory member.

Abstract: A vehicle seat reclining device is disclosed. An operation mechanism allows a second memory member to engage with and disengage from a first memory member, and locks and unlocks a lock member in conjunction with the engagement and disengagement. When the first memory member is in a predetermined rotational position relative to the second rotating member, the second memory member is inserted into an engagement slot provided in the first memory member, thereby restricting rotation of the first memory member relative to the second rotating member. The operation mechanism includes a link member that is linked to the second memory member inserted into a guide hole provided in a plate-shaped member. In the thickness direction of the plate-shaped member, the link member is arranged on the same side of the plate-shaped member as the first memory member.

Abstract: When a first memory member rotates relative to a second rotating member to a predetermined relative rotation position at which a second memory member sliding on a sliding surface is capable of entering an engagement slot, the slide-trailing end of the second memory member, which leaves the sliding surface last, is a corner having no round shape. Further, the boundary between the sliding surface and the engagement slot is also a corner having no round shape.

Abstract: A seat reclining device for a vehicle includes a first rotating member, a second rotating member, a locking member, a first memory member, a second memory member, and an operation mechanism. The operation mechanism includes a guide hole. The second memory member includes a shaft portion inserted into the guide hole. The second memory member is configured to engage with and disengage from the first memory member by being supported in a state in which the shaft portion is movable in the longitudinal direction of the guide hole. In the periphery of the guide hole, a support wall is provided that protrudes in the thickness direction of a plate-shaped member.

Abstract: A seat reclining device includes a first memory member that frictionally engages with the outer surface of a first rotating member, and a second memory member that is capable of engaging with and disengaging from the first memory member. The first memory member has a frictional engagement portion that has an annular shape with a discontinuous section and is fitted to a circumferential wall portion of the first rotating member.

Abstract: A reclining device includes an operating shaft that is inserted through the reclining device in its axial direction to be mounted, and is adapted to release the reclining device from a locked position, and a torsion spring mounted between an outer end portion of the operating shaft which protrudes from the reclining device outward in a width direction of the seat, and a frame portion that is located outside the reclining device in the seat width direction. The operating shaft is constantly biased by the torsion spring in a rotational direction for locking the reclining device. The torsion spring is mounted onto the outer end portion of the operating shaft in the axial direction from an outer side of the seat, and has an inner end portion which is engaged with the operating shaft, and an outer end portion which is engaged with the frame portion.

Abstract: A vehicle seat reclining device includes first and second brackets, which are rotational relative to each other, two guide portions provided on the first bracket and forming a guide groove, a pawl, and a protruding portion. The pawl has outer teeth, which can engage with and disengage from inner teeth of the second bracket, and is guided by the guide groove to move radially. The protruding portion protrudes circumferentially at least at the tip end portion of the guide portion. A fulcrum of inclination of the pawl with respect to the guide part may occur at the time when the outer teeth and the inner teeth are disengaged from each other. The fulcrum located at a position closer to the inner teeth than an intersection point between the guide portion and a normal to a surface where the outer teeth and the inner teeth are engaged with each other.

Abstract: A vehicle seat reclining device is provided with a first bracket having internal teeth, a plurality of pawls each having external teeth capable of engaging with and disengaging from the internal teeth, a second bracket having a guide portion that movably holds the pawls in a radial direction, and a cam mechanism, which moves each pawl in the radial direction. Among the external teeth in each pawl, at least one external tooth including an end tooth located at one end in the circumferential direction of the pawl is displaced inward in the radial direction with respect to a reference position corresponding to the pitch circle of the internal teeth along a center line that divides the external tooth into two parts in the circumferential direction without changing the shape of an effective engagement portion for the internal tooth and the pitch circle radius of the external tooth.

Abstract: A seat slide apparatus for a vehicle includes a second unlock mechanism rotating an unlock lever in a direction that unlocks a lock mechanism by pushing the unlock lever in accordance with a predetermined seat operation, an unlocked state retaining lever retaining the lock mechanism in an unlocked state cooperating with the second unlock mechanism by operating in conjunction with the second unlock mechanism, a first unlocked state release mechanism moving the unlocked state retaining lever to a position where the lock mechanism is released from the unlocked state by making contact with an operation body in accordance with movement of an upper rail relative to an lower rail, and a second unlocked state release mechanism moving the unlocked state retaining lever to a position where the lock mechanism is released from the unlocked state by pushing the unlocked state retaining lever in accordance with the operational input.

Abstract: Provided is a vehicle seat sliding apparatus including a lower rail, an upper rail to the lower rail, a locking mechanism, unlocking mechanism, an unlocked-state maintaining lever, and an unlocked-state releasing lever, in which the unlocked-state releasing lever includes a rotational operating portion configured to rotate in a first direction and to be capable of coming into contact with an operating member in the direction of the relative movement of the upper rail, and the unlocked-state releasing lever is configured to press and move the unlocked-state maintaining lever in the direction of releasing the maintenance of the unlocked state and is capable of rotating in the first direction is disabled without moving the unlocked-state maintaining lever from the maintaining position.

Abstract: A reclining device includes an operating shaft that is inserted through the reclining device in its axial direction to be mounted, and is adapted to release the reclining device from a locked position, and a torsion spring mounted between an outer end portion of the operating shaft which protrudes from the reclining device outward in a width direction of the seat, and a frame portion that is located outside the reclining device in the seat width direction. The operating shaft is constantly biased by the torsion spring in a rotational direction for locking the reclining device. The torsion spring is mounted onto the outer end portion of the operating shaft in the axial direction from an outer side of the seat, and has an inner end portion which is engaged with the operating shaft, and an outer end portion which is engaged with the frame portion.

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 vehicle seat reclining device includes first and second brackets, which are rotational relative to each other, two guide portions provided on the first bracket and forming a guide groove, a pawl, and a protruding portion. The pawl has outer teeth, which can engage with and disengage from inner teeth of the second bracket, and is guided by the guide groove to move radially. The protruding portion protrudes circumferentially at least at the tip end portion of the guide portion. A fulcrum of inclination of the pawl with respect to the guide part may occur at the time when the outer teeth and the inner teeth are disengaged from each other. The fulcrum located at a position closer to the inner teeth than an intersection point between the guide portion and a normal to a surface where the outer teeth and the inner teeth are engaged with each other.