The embodiments described and claimed herein are improved vehicle access systems. In particular, one embodiment includes three compact, motorized mechanisms for pivoting a passenger seat toward a door opening, extending the passenger seat outside the door opening, lowering the passenger seat, and tilting the passenger seat to help the passenger stand. The first mechanism concurrently pivots the passenger seat and moves it sideways during the pivoting operation so that it is aligned with the door opening. The second mechanism extends the passenger seat outside the door opening. The third mechanism lowers the seat.

Disclosed is a vehicle seat locking device including: a single latch having an engaging groove and first through third arm portions; a ratchet having a restraining portion engaging the first and second arm portions, restraining the latch in first and second latching positions respectively; and an engagement auxiliary lever having a first auxiliary arm portion abutting with a leg portion of a striker and a second auxiliary arm portion pivoting by this abutment. The latch pivots from an unlatching position to the first latching position by engaging its engaging groove with the leg portion entered a striker entering groove of a baseplate, and pivots to a second latching position by the pivot of the second auxiliary arm portion. The leg portion exits the engaging groove by the pivot of the latch to the second latching position to be clamped between the engagement auxiliary lever and the third arm portion.

A backrest locking mechanism adapted for a backrest and a base of a child safety seat is provided. The backrest is detachably connected to the base. A guiding slot is formed on the base. A mounting arm protrudes from the backrest and is configured to be at least partially accommodated inside the guiding slot and slidable relative to the guiding slot. The backrest locking mechanism includes a locking pin and a locking component. The locking pin is disposed on one of the mounting arm or the guiding slot. The locking component is partially located inside the other of the mounting arm or the guiding slot. A locking hole structure is formed on the locking component. The locking pin and the locking hole structure engage with each other when the mounting arm is at least partially accommodated inside the guiding slot. Besides, a related child safety seat is also provided.

An adjustable headrest wherein the headrest independently moves along the substantially vertical axes of the mounting rods in response to a first-applied substantially vertical force applied to the headrest when the button I simultaneously actuated, and further wherein the headrest independently moves along the substantially horizontal axis of the slide rail in response to a second-applied substantially horizontal force applied to the headrest when the button is simultaneously actuated.

A device for rapid removal/reinstallation of a back of a seat of a vehicle, the back being attached, by at least one first strap, to a ceiling. The device includes a hanging intermediary structure and a fixed structure integral with the ceiling and retaining the structure in the use position of the seat, in which it has been brought with an upward movement, and locking the structure in the use position or unlocking it such that it is moved away from the ceiling to release the tension exerted by the first strap and allow the structure to be disengaged from the retaining unit. The back can thus be removed or reinstalled without any action on the tension setting of the strap.

A hinge mechanism for a vehicle seat, allowing adjustment of the tilt of a seat backrest relative to a seat cushion. The hinge mechanism has two plates, the first plate containing base gear teeth on an edge directed inward, a set of first elements cooperating with a first control cam biased by first springs, a set of second elements cooperating with a second control cam biased by second springs, and a control hub for moving the control cams toward an unlocking position against the biasing of the first and second springs. The set of first elements have teeth offset angularly by at most a half-tooth relative to teeth of the set of second elements, thereby obtaining a small locking pitch.

A vehicle seat includes a hook and cam latching mechanism that releasably couples an occupant support to the vehicle body. The latching mechanism has a hook and a cam that apply clamp loads at opposite sides of an anchor to lock the occupant support in a use position in a manner that can reduce or eliminate loose conditions and associated noise often associated with other types of latching mechanisms. Cam movement is coordinated with hook movement to accommodate an engaged condition with a secured clamp load along with easy engagement and disengagement of the hook. The latching mechanism can be used with easy-entry vehicle seats or other types of vehicle seats where movement of a seat bottom or seat back away from the vehicle body is desired.

A seat adjustment mechanism for an adjustable seat assembly includes an arcuate tilt column; a lift column; a first tilt slider block detachably engaged to the lift column and slideably engaged to the tilt column for moving the lift column between a plurality of tilt positions; and a first lift slider block slideably engaged to the lift column for moving between a plurality of lift positions independent of the plurality of tilt positions. The slider blocks, the lift columns, the tilt columns and the cross brace may be made of dissimilar materials and/or are easily replaced with alternative components.

A motor vehicle seat including a seatback part and a sitting part, the sitting part including a base panel bordered at least partially by a side panel, and a mechanism mounting the seat on the vehicle floor panel in two different positions: a first accommodating position in which the side panel extends at least partially in an extension of the seatback part, between the seatback part and the sitting part base panel, and a second reversed position in which the base panel extends between the seatback part and the side panel of the sitting part. The motor vehicle seat further includes a mechanism locking the sitting part in at least one of the two accommodation and reversed positions, at least part of the locking mechanism belonging to the seatback part.

A convertible seat assembly is operable to transition between a collapsed position and an expanded position. The convertible seat assembly includes a fixed seat and a sliding seat. The sliding seat may be independently moveable with respect to the fixed seat. The convertible seat assembly may be coupled to a seat belt assembly, which includes a first seat belt operable to releasably couple to the fixed seat and a second seat belt operable to releasably couple to the sliding seat.