A vehicle seat belt device includes: an anchor part configured to be provided at a vehicle seat or a vehicle body on a first side in a width direction of the vehicle seat, and to displace a lower end portion of a buckle device to a vehicle front side by being deformed by a load applied from a lap belt to the buckle device at a time of vehicle collision; and a buckle rotation mechanism configured to include a guide part that is provided at the vehicle seat or body on a vehicle downward side of the buckle device and inclined downward toward the vehicle front side, and a pull-in part that connects the guide part and an upper portion of the buckle device and is slidable along the guide part, and to rotate the buckle device to the vehicle front side and downward side due to the displacement.

A vehicle seat, which is provided with a collision prediction sensor and with a seat cushion having a seat cushion top face and a seat cushion frame, includes: a pelvis movement suppression member disposed along a seat width direction inside a front portion of the seat cushion; a vertical movement-enabling unit supporting the pelvis movement suppression member at the seat cushion frame and allowing vertical movement of the pelvis movement suppression member to follow vertical movement of the seat cushion top face; and a stopper unit attached to the seat cushion frame and, in a case in which a rapid deceleration of a vehicle is detected or a collision of the vehicle is predicted by the collision prediction sensor, restricting downward movement of the pelvis movement suppression member.

A device for controlling the breakover rate of a seatback in response to a dynamic event (regulating the breakover velocity so as to achieve optimal velocity differential to the impact velocity of a passenger's head impacting with the seatback) is attachable to the seatback and to the seat frame; when a breakover event is triggered, the passage of a head injury criterion (HIC) pin through a controlled traveling slot is impeded by energy absorbing materials selected, e.g. for material composition and structure, to restrict the breakover velocity of the seatback to optimize velocity differential between the breakover velocity and the impact velocity by engaging the HIC pin and deforming at a predetermined deformation rate.

A vehicle seat comprising a seat member and a backrest, wherein a belt connection is attached to or integrated into the upper end of the backrest, a mechanical coupling device is provided for coupling the backrest to the assembly for adjustment of the inclination of the seat member in the event of a collision. A triggering threshold is defined wherein the backrest is decoupled from the assembly under normal operating conditions, and wherein in a collision, when the triggering threshold is exceeded, the backrest pivots forwards and is finally coupled via the mechanical coupling device to the assembly, so that further pivoting of the backrest forwards triggers the assembly and causes the front region of the seat member facing away from the backrest to pivot upwards about a transverse axis.

Devices, systems, and methodologies for vehicle seats include selectively collapsible safety layers providing collapsible support to reduce impulse experienced by the seated passenger imparted by the vehicle seat, which can reduce the likelihood and/or extent of injury attributable to occurrences exceeding threshold momentum changes, such as transportation vehicle collisions.

A 3-point seatbelt device includes webbing for restraining an occupant, with one end of the webbing disposed on one seat width direction side of a rear portion of a seat cushion frame, and includes a buckle to engage with a tongue plate. The rod shaped submarining restriction member spans across a front portion of the seat cushion frame in the seat width direction, is actuated by a first load imparted to the webbing from a seated occupant in a frontal collision of the vehicle, and moves toward a vehicle upper side from a pre-actuation normal position toward a post-actuation restricting position. The pair of load transmission members are respectively coupled to the submarining restriction member and either the one end of the webbing or the buckle in a seat front-rear direction.

Arrangements for safety and comfort in vehicles.

A vehicle seat for attaching to a vehicle structure of a vehicle has a seat part and a backrest. The vehicle seat is movable in the longitudinal direction of the vehicle in relation to the vehicle structure and adjustable into a resting or lying seat position. In the event of a collision, the vehicle seat with the seat part is or can be pivoted upwards along an axis extending parallel to the vehicle transverse direction, with a front region facing away from the back rest. The backrest, at least in the resting or lying position, is or can be connected to the vehicle structure of a tensile force transmission element.

A raisable seat for a vehicle, comprising a frame for a seating portion, a rail, a raising mechanism suitable for moving the seating portion frame relative to the rail between a lowered position and a raised position, said raising mechanism comprising on each side of the seat at least one connecting rod, said connecting rod having a rod body with an upper end connected to the frame and a lower end connected to the rail, at least one connecting rod also comprising a protuberance extending from the lower end, the protuberance extending facing the rail, said connecting rod being adapted to deform, in the event of an impact, between a first state in which a gap separates the rail and the protuberance regardless of the position of the seating portion frame between the lowered position and the raised position, and a second state in which the protuberance is in contact at least locally with the rail.

A vehicle seat whose state is changeable when a rear load is input to a conveyance includes a rotary member configured to move from an initial position in association with the state change, and a lock pin configured to restrict movement of the rotary member. Where a load on the vehicle seat from an occupant based on the rear load changes according to the occupant's physique, weight, etc., when the load is less than a predetermined value and the rotary member moves from the initial position to reach a first position, the lock pin holds the rotary member at the first position. When the load is equal to or greater than the predetermined value, the rotary member, after having reached the first position, moves toward a second position beyond movement restriction by the lock pin, the second position being apart further from the initial position than the first position.