A coupler for coupling a cross-talk tube of a vehicle seat with a shaft of a dual recliner assembly. The coupler comprises a generally cylindrical body extending axially between an inboard end and an outboard end. The inboard end includes an inboard aperture having an inboard planar surface. The outboard end includes an outboard aperture having an outboard planar surface. The inboard planar surface and the outboard planar surface transition from an axially offset position to an axially aligned position when the coupler is installed with the cross-talk tube and the shaft of the dual recliner assembly.

Proposed herein is a reclining apparatus for a seat, which secures coupling between a cap and a gear plate through a uniform position adjustment of the cap when the cap of a recliner is assembled, secures operation performance between components, and prevents a bearing from being deformed and separated due to an external force.

A seat for a motor vehicle, the seat comprising a backrest and a seating portion, the backrest being mounted to rotate relative to the seating portion about a substantially transverse axis, a hinge being provided for adjusting a tilt of the backrest relative to the seating portion about the substantially transverse axis, the seat being provided with a plurality of means for controlling a movement of the hinge, the seat further comprising an interface for controlling said movement of the hinge, the interface comprising a central portion and a peripheral portion, the peripheral portion being arranged around the central portion, the interface further comprising a plurality of recesses shaped to receive the plurality of means for controlling the movement of said hinge.

A bracket for attaching an actuator is easily bonded to a side frame while avoiding interference with a shaft for driving a reclining mechanism. In a seat side frame which is provided at each of both ends of a seat back frame in the width direction, a reclining mechanism, and an actuator, the reclining mechanism is attached to a side wall of the side frame, and the actuator is fixed to an attachment bracket bonded to an inner surface of a portion to which the reclining mechanism is attached in the side wall in the width direction. An upper portion which is disposed above the attachment portion of the reclining mechanism and a lower portion which is disposed below the attachment portion thereof are connected to each other at the rear ends thereof and are separated from each other at the front ends thereof.

An adjusting device for a vehicle seat for adjusting a component of the vehicle seat, may have a tube, a motor and a pinion which is drivable by the motor. The motor and the pinion may be arranged in the tube. In addition, a vehicle seat may have a transverse tube, a component which is movable relative to the transverse tube and the adjusting device for adjusting the component relative to the transverse tube.

A method of manufacturing a connecting rod is provided. The method includes the steps of (1) forming, on a long rod material, a rotation transmitting portion having a non-circular cross section; (2) cutting the rod material to provide the rotation transmitting portion at each of both ends; and (3) forming, by cutting work, a small-diameter column portion and a tapered portion at a first end of the cut rod material from a tip-end side. The small-diameter column portion has a diameter smaller than a diameter of the rotation transmitting portion. The tapered portion is provided continuously from the small-diameter column portion and gradually increases in diameter. The rotation transmitting portion is provided continuously from the tapered portion.

A reclining mechanism of a seat is provided that includes a fixed flange, a mobile flange, and locking parts being placed on first guide seats of guide seats on a first side of the fixed flange to be slidable inwardly and outwardly between the guide protrusions. Each locking part includes a locking gear on an outer end and is configured to engage with the internal gear of the mobile flange when sliding outwardly, thereby inhibiting relative rotation between the mobile flange and the fixed flange. The reclining mechanism further includes a locking cam rotatably provided at a center of the fixed flange and sub-parts provided on second guide seats of the guide seats on the first side of the fixed flange to be slidable inwardly and outwardly between the guide protrusions, each of the sub-parts being divided into a first part and a second part by a slit.

An adjustment fitting for adjusting an inclination of a backrest of the vehicle seat may have a first fitting part, and a second fitting part which is pivotable about a central axis of rotation relative to the first fitting part and is connectable to the backrest of the vehicle seat. The first fitting part and the second fitting part may be components both of a gear unit, such as a planetary gear, of the adjustment fitting and of a locking device, such as a detent lock, of the adjustment fitting. A vehicle seat having the adjustment fitting is also disclosed.

Disclosed herein is a recliner for a vehicle seat, wherein a plurality of second latching protrusions (51a) is formed on a socket (50) and a plurality of first latching protrusions (41b and 42b), which is latched to the second latching protrusions (51a) when the socket rotates, is formed on two wedges (41 and 42). When the recliner is operated, a loss angle is reduced by simultaneous rotation of the wedges (41 and 42) so that the responsiveness of the recliner is improved.

An object of the present invention is to provide a seat for a vehicle which is capable of smoothly and stably adjusting the reclining of a seat back by driving an electrical reclining motor 34, even if the electrical reclining motor 34 is diagonally mounted on a seat back frame structure in a case where the electrical reclining motor 34 is fixedly connected on a seat back frame structure, or even if the electrical reclining motor 34 becomes inclined due to a deformation of the seat back frame structure after such a fixedly connection.

There is provided a seat 10 for a vehicle comprising a seat back frame structure 12 a lower end of which is connected to a rear end of a seat cushion frame structure 14 in such a way that the seat back frame structure 12 can be inclined relative to the seat cushion frame structure 14, said seat back frame structure 12 including a pair of side frames 20A,B each of which extends in a vertical direction of the vehicle, said seat 10 for the vehicle further comprising a through-hole 28 provided on a lower end portion of each of the pair of side frames 20A,B, a connecting rod 30 extending through each of the through-holes 28 so as to be rotatable about a horizontal direction, an electrical reclining motor 34 rotating said connecting rod 30 and provided along the one of side surfaces of the one of said pair of side frames 20A,B, and a reclining apparatus 16 provided on the other of the side surfaces of each of said pair of side frames 20A,B, a bolt through-hole 72 being provided on a non-rotational driven solid portion of said electrical reclining motor 34, a bolt 74 which fits into said bolt through-hole 72 is provided for fixedly bolting said electrical reclining motor 34 on said one of the side surfaces of the one of the pair of side frames 20A,B, said bolt 74 comprising a head portion 76 and a shank portion 78 with a circular cross-section, said shank portion 78 comprises an enlarged-diameter portion 82 on its end portion and a reduced-diameter portion 84 adjacent to the enlarged-diameter portion 82 with being concentric to each other.