A reclining apparatus (51) includes: an internal gear (61) that has internal teeth (61c) which are formed on an inner peripheral surface thereof; an external gear (63) that has external teeth (63a) which have a smaller number of teeth than that of the internal teeth (61c) and are formed on an outer peripheral surface thereof; a first wedge (71) and a second wedge (73) that are provided so as to be movable along a peripheral direction in an eccentric annular space between the internal gear (61) and the external gear (63); and a striker (79) that has a pressing portion having a pair of first protrusion portions and second protrusion portions capable of pressing the first wedge (71) and the second wedge (73). The striker (79) has a plurality of the pressing portions (81, 83).

Disclosed is a seat recliner for a vehicle, the seat recliner including: a flange provided with internal teeth on an inner circumferential surface thereof; a gear plate disposed in the internal teeth of the flange, provided with external teeth along an edge thereof to be engaged with the internal teeth of the flange with being eccentric with respect to the flange, and formed with a through-hole at a center thereof; a rotating cam disposed at a center of the through-hole of the gear plate; a wedge cam held between the rotating cam and an inner circumferential surface of the through-hole of the gear plate to maintain eccentricity of the rotating cam and the gear plate, and provided with a lubrication part on a contact surface with the rotating cam to preserve lubricant; and an elastic member configured to press the wedge cam.

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.

Disclosed is a seat recliner for a vehicle, the seat recliner including: a first flange; a plurality of locking gears seated in the guide spaces of the first flange respectively with lower surfaces thereof facing down, sliding back and forth radially along the guide parts, and provided with external teeth and guide protrusions; a locking cam provided with a locking protrusion on an upper surface thereof; a control member seated on the upper surfaces of the locking cam and the locking gears and provided with a coupling part, a locking hole, and guide slits; a second flange; and an input member inserted into the center of the first flange behind the first flange to be coupled with the control member at an end portion thereof and provided with a locking part at the end portion thereof to be coupled with the coupling part of the control member.

Disclosed is a seat recliner for a vehicle, the seat recliner including: a flange provided with internal teeth on an inner circumferential surface thereof; a gear plate disposed in the internal teeth of the flange, provided with external teeth along an edge thereof to be engaged with the internal teeth of the flange with being eccentric with respect to the flange, and formed with a through-hole at a center thereof; a rotating cam disposed at a center of the through-hole of the gear plate; a wedge cam held between the rotating cam and an inner circumferential surface of the through-hole of the gear plate to maintain eccentricity of the rotating cam and the gear plate, and provided with a lubrication part on a contact surface with the rotating cam to preserve lubricant; and an elastic member configured to press the wedge cam.

A seat recliner for vehicles includes a mobile flange provided such that an upper part thereof is open and configured to define a seating space through a bottom surface and a side surface and to have an internal gear formed along an inner side of the side surface, and a support groove formed between upper ends of the internal gear and the side surface, a gear plate inserted into the seating space of the mobile flange, and configured to have an external gear formed along an outer side of a side surface of the gear plate, and a support configured to extend outwards from an upper end of the external gear and located in the support groove, and a retainer configured to cover both upper parts of the mobile flange and the gear plate, and fixed to an upper end of the mobile flange.

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.

A recliner including a ratchet and a guide mounted in an axial direction, and a lock mechanism configured to lock relative rotation between the ratchet and the guide by meshing in a radial direction, the lock mechanism including a plurality of poles which is configured to be supported in a circumferential direction by the guide and has outer circumferential teeth configured to mesh with inner circumferential teeth formed on the ratchet as the poles are pushed outwards in the radial direction to be moved, the plurality of poles including a specific pole, wherein the specific pole includes a pressing portion configured to contact a restraint portion of the guide from an inner side in the radial direction so as to be restrained from moving in the circumferential direction as the specific pole is pushed outwards in the radial direction by an operating cam to be moved.

Described is recline mechanism for a comfort seating assembly such as a theater seat which can be mounted on a sloped surface. In a fully recline position, the seating assembly is compact with a layout that falls generally within its profile. The recline mechanism includes a pair of each of: seat rail brackets, front pivot links, rear pivot upper lift link to control the motion of the rear end of the assembly, rear pivot links each attached to one rear pivot upper lift link, carrier links, each carrier link attached to one front pivot link and to a rear pivot link and a pair of rear pivot upper lift control links, attached to a pivot upper lift link and to a carrier link. A linear actuator attached by motor drive tubes at two ends of the linkage system transitions the recline mechanism between the closed and recline positions.

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.