A single-stage gear reduction output mechanism for an automotive seat assembly including a gear housing bracket, gear housing, axle shaft, eccentric, and first and second gears. The axle shaft extends through the eccentric with a slip fit, the first gear rotates with the axle shaft, and the second gear is carried on a first bearing surface of the eccentric and meshingly engages the first gear in a planetary arrangement. A locking plate including first, second, and third slot cutouts is disposed within the gear housing. A support pin extends from the gear housing through the first slot cutout and a second bearing surface of the eccentric extends through the second slot cutout to support the locking plate and limit its movement along a lateral axis. The second gear includes a first pin that extends through the third slot cutout to prevent the first gear from back-driving the second gear.

A vehicle seating assembly includes a seat frame. A support bracket is rotatably coupled with the seat frame, and is coupled with a front seat cushion tube supporting a forward portion of a seat. A spindle bracket is operably coupled with the frame. A position clamp includes a spring-biased piston rotatably coupled with the spindle bracket. A housing is slidably coupled with the piston, operable between fore and aft positions, and is rotatably coupled with a clamp mounting bracket, which is fixedly coupled with the support bracket. A release bar is operably coupled with the position clamp, is operable between lock and release positions, and is spring-biased to the lock position. A release handle is operably coupled to the release bar and configured to disengage the release bar from the lock position, thereby allowing sliding movement of the housing fore and aft relative to the housing.

A vehicle seat includes a seat frame, a bushing having a shape of a hollow cylinder and a pipe. The pipe is fitted to the bushing and attached to the seat frame. The pipe includes a body portion having a fitting diameter different from a fitting diameter of the bushing and a fitting portion formed at an end in an axial direction of the body portion and fitted to an inner periphery or an outer periphery of the bushing. The fitting portion is formed in a diameter-reduced or diameter-increased hollow cylindrical shape that is fitted to the inner periphery or the outer periphery of the bushing.

A vehicle seat assembly includes a seat pan and four linkage arms individually pivotably coupled with the seat pan. The assembly further includes a mounting plate, each of the four linkage arms being pivotably coupled therewith. A gear rack is coupled with the seat pan and defines an articulation path therefor, and a pinion is operably engaged with the rack to drive articulation of the seat pan including pivoting of the four linkage arms and sliding of the mounting plate.

A single-stage gear reduction output mechanism for an automotive seat assembly including a gear housing bracket, gear housing, axle shaft, eccentric, and first and second gears. The axle shaft extends through the eccentric with a slip fit, the first gear rotates with the axle shaft, and the second gear is carried on a first bearing surface of the eccentric and meshingly engages the first gear in a planetary arrangement. A locking plate including first, second, and third slot cutouts is disposed within the gear housing. A support pin extends from the gear housing through the first slot cutout and a second bearing surface of the eccentric extends through the second slot cutout to support the locking plate and limit its movement along a lateral axis. The second gear includes a first pin that extends through the third slot cutout to prevent the first gear from back-driving the second gear.

A single-stage gear reduction output mechanism for an automotive seat assembly includes a gear housing bracket, gear housing, axle shaft, eccentric, and first and second gears. The axle shaft extends through the eccentric with a slip fit, the first gear rotates with the axle shaft, and the second gear is carried on a first bearing surface of the eccentric and meshingly engages the first gear in a planetary arrangement. The second gear includes an external flange with at least two guide holes. First and second support pins that are rigidly fixed in place relative to the axle shaft extend through the two guide holes in the external flange of the second gear. Forces acting at the interfaces between the first and second support pins and the two guide holes and between the eccentric and the second gear prevent the first gear from back-driving rotation of the second gear.

A vehicle seating assembly includes a seat, a seatback, a track assembly, a front anchor, a rear anchor, and a first gear. The seatback is coupled to the seat. The seatback is pivotable relative to the seat. The track assembly is configured to couple the seat to a floor of a vehicle. The rear anchor is coupled to the seat and configured to engage with the track assembly. The front anchor is coupled to the seat and configured to engage with the track assembly. A position of the seat relative to the front anchor and the second anchor is adjustable. The first gear extends between the front anchor and the seat. The first gear defines a guide slot therein that receives a guide pin. Movement of the first gear adjusts a position of a front region of the seat relative to a rear region of the seat.

When reversing a direction in which an angle is adjusted by a first adjustment section and reversing a direction in which a posture is adjusted by a second adjustment section, a control section of a seat provides, before a timing at which a driving direction of a second driving section is reversed, a stop period for stopping the second adjustment section from adjusting the posture, and the control section causes the first adjustment section to carry out a preparation operation in advance during the stop period.

The present invention relates to a seat five-link structure (A), comprising a bottom support (1), a wall plate (3), a first front link (4), a second front link (5) and a rear link (2), wherein the bottom support (1) is pivotally connected with the first front link (4) through a first pivot axis (O.sub.1), the first front link (4) is pivotally connected with the second front link (5), the second front link (5) is pivotally connected with the wall plate (3), and the rear link (2) is pivotally connected with the bottom support (1) through a second pivot axis (O.sub.2) and is pivotally connected with the wall plate (3); a first electric motor (8) configured to output a first external force for driving the first front link (4) to rotate around the first pivot axis (O.sub.1); and a second electric motor (12) configured to output a second external force for driving the rear link (12) to rotate around the second pivot axis (O.sub.2). The seat five-link structure (A) according to the present invention may have a larger adjustment range of an inclination angle and a seat height, which is beneficial to the realization of a zero-gravity function and allows an occupant better vision and better comfort.

A cushion tipping module is configured to be assembled between a seat cushion and a track assembly of a vehicle seat assembly. The cushion tipping module is configured to tip the seat cushion between an upright seating position and a rearward inclined position. The cushion tipping module includes opposing lift links fixedly coupled to distal ends of a transverse tube and configured to be operatively coupled to the seal cushion, an attachment link fixedly coupled to the transverse tube and pivotably coupled to a threaded nut, an electric motor operatively coupled to a lead screw meshingly engaged with the threaded nut, and motor mounting bracket configured to be assembled with the track assembly.