Abstract: An energy absorbing assembly for a passenger seat that includes a crushable energy absorbing element for safely capturing kinetic energy during an impact event. The energy absorbing assembly comprises a linkage which is mechanically connected with moving parts of the seat back or seat pan by a first attachment element and a second attachment element, and the linkage includes an extended portion that extends beyond one of the attachment elements. A crushable energy absorbing element is mounted around the extended portion of the linkage and connected thereto, so that the crushable energy absorbing element receives and absorbs energy by deformation when the seat back is pushed forward with sufficiently high energy.

Abstract: An assembly includes a rod, a tube slidably supported by the rod, a seatbelt buckle supported by the tube, and a lock. The tube and the rod are releasably engageable to each other by the lock.

Abstract: A bench seat for a utility vehicle includes a seat cushion configured to be movable between an open position where a rear portion is lifted by way of a hinge portion mounted on a front end so that the occupant is allowed to access a space disposed below the seat cushion and a normal position where the rear portion is not lifted; a plurality of seatbelt buckles disposed behind the seat cushion, the plurality of seatbelt buckles being provided corresponding to the plurality of occupants, at least two seatbelt buckles among the plurality of seatbelt buckles being disposed close to each other in the lateral direction; and a seat fixing device disposed between said two seatbelt buckles disposed close to each other, the seat fixing device being configured to lock the seat cushion positioned at the normal position to a chassis.

Abstract: A vehicle seat includes: a first member; a second member; an insertion fastening structure configured to apply an axial tension to an opposed surface portion of the first member and an opposed surface portions of the second member so as to be pressed against each other; and an adjustment member. The opposed surface portion of the second member includes different surface shape portions facing respective surfaces toward directions different from an application direction of the axial tension, and the adjustment member plastically deforms the opposed surface portion of the second member such that the opposed surface portion of the second member, including the different surface shape portions, is pressed and sandwiched between the adjustment member and the opposed surface portion of the first member by the application of the axial tension.

Abstract: A seat track assembly includes a moveable rail configured to support a seat and a stationary rail configured to be mounted to a floor structure. The moveable rail is selectively positioned relative to the stationary rail is a plurality of use positions. The moveable and stationary rails include end stop structures that cooperate to adjust the overall travel length and travel midpoint position of the moveable rail relative to the stationary rail.

Abstract: A vehicle seat comprising a seat part extending in the vehicle longitudinal direction (X) and in the vehicle transverse direction (Y) and including a backrest part is provided. The vehicle seat includes a seat substructure for suspending and/or damping at least the seat part with respect to the body of a vehicle. The seat substructure comprises at least one horizontal suspension device that includes a body-side lower part and a seat-part-side upper part displaceable with respect thereto. A coupling device is arranged interactively between the seat-part-side upper part and the body-side lower part, and includes a deformable suspension element as a first coupling element and a bearing and deformation device as a further coupling element.

Abstract: An arrangement in passenger vehicles, that provide a mechanism for reducing the peak inertial loading on the occupant including children during lateral acceleration, and has synergistic comfort, convenience and utility features.

Abstract: A track-mounted aircraft seat has seat track locking pins that are capable of moving independently to remain engaged with the seat track assembly in a warped-floor condition. The seat track locking pins are actuated by means of a pair of torque tubes that rotate independently about a common pilot shaft. A control link, which is operated by the user, acts on a pair of bell cranks each of which acts on one of the torque tubes. The control link is attached to the bell cranks by means of a spherical joint. Because the torque tubes rotate independently and because the spherical joint allows the bell cranks also to move independently, in the event of a warped-floor condition, rotation of one torque tube caused by the skewed seat track will not cause the other torque tube to release its track locking pin.

Abstract: A vehicle seat carrier for a vehicle seat comprises a position adjustment arrangement adapted to enable the vehicle seat carrier to be displaced between a plurality of different positions and a position lock adapted to retain the vehicle seat carrier at a selected position. The position lock is adapted to be disabled as a response to a detected crash, or a detected imminent crash, so that the vehicle seat carrier is permitted to be displaced along a first path at least partly defined by the position adjustment arrangement, to provide for a passenger protective function. The passenger protective function utilizes the existing position adjustment arrangement to provide for a controlled displacement during a collision.

Abstract: An energy absorbing device for carrying a passenger seat; the device comprises a base fixed to a vehicle; a member displaceable from base; at least one energy-absorbing arrangement interconnecting base and displaceable member. The energy-absorbing arrangement comprises a plastically deformable absorbing element in response to stresses greater than a predetermined threshold stress. In some embodiments the plastically deformable absorbing element is a helically configured ribbon having spaced-apart ribbon laps. In other embodiments the plastically deformable absorbing element is compressible, and/or extendable.

Abstract: The invention relates to a suspension device for vehicle seats and/or vehicle cabins for applying a spring force to a vibratory motion of a first component relative to a second component, preferably in the longitudinal and/or transverse direction of the vehicle, wherein at least one elongate spring member extending at least in the longitudinal and/or transverse direction of the vehicle is connected in at least one end region to the first component and in the central region thereof to the second component, wherein the elongate spring member is made from a flexible elastomer material that is formed to be rod-shaped.

Abstract: An anchor plate (12) and an inner lap anchor (14) disposed at left and right sides of a vehicle seat are connected to an inner side cable (20A) and an outer side cable (20B), respectively. The anchor plate (12) and the inner lap anchor (14) are pulled substantially at the same time by a pretensioner device (21) when acceleration of a predetermined degree or more is applied to a seat (1). A support device (40) is provided between the inner lap anchor (14) and the inner side cable (20A) so as to support load applied to the inner lap anchor (14) in a distributed manner.

Abstract: The present invention provides a unique shock absorbing module which, when attached to a vehicular seat and chassis, exhibits unexpected superior effectiveness in reducing the effects of impacting shocks emanating from the operation of a vehicle. The shock absorbing system includes shock absorbing members disposed within a guide track supported by support frame. A slideable carriage with tracking members such as wheels saddling onto the shock absorbing system serves to immediately transfer and absorb any impacting forces exerted multidirectionally against the carriage member and a vehicular seat mounted thereto.

Abstract: A seatbelt mechanism (S) comprises a chip anchor (12) disposed to one of right and left sides of a seat bottom (3) of the vehicle seat (1) and coupled to a tip end of the seatbelt (10), and a tongue anchor (14) disposed to the other of the right and left sides of the seat bottom (3) and engaged with a tongue plate (13) disposed to an intermediate portion of the seatbelt (10). A pretensioner mechanism (21) moves both the chip anchor (12) and the tongue anchor (14) substantially at the same time to actively tenses the seatbelt (10) when the vehicle collision occurs. A moving distance of the chip anchor (12) is substantially equal to a moving distance of the tongue anchor (14).

Abstract: A shock absorbing member is supported on a shock absorbing member support bracket fixed onto a floor tunnel sandwiched between left and right front seats. Therefore, it is possible to allow the front seats to interfere with the shock absorbing member so that the member can absorb collision energy at a time of a side collision of a vehicle. Because a lower portion of a front wall connected to an inverted-U-shaped inner face of the shock absorbing member is connected to an upper portion of a front wall of the shock absorbing member support bracket, the front wall of the shock absorbing member support bracket receives a load of the side collision in a shearing direction. Accordingly, it is possible to increase strength of the front wall of the shock absorbing member support bracket against the side collision, prevent the shock absorbing member from falling down sideways, and enhance the shock absorbing effect.

Abstract: The present invention relates to a child restraint system (1) with a base (2) having a lower surface resting on a sitting portion of a vehicle, where the base (2) through ISOFIX latching means is engaged with anchorage means (12) in the vehicle seat (13), thereby providing a pivot connection between the base (2) and the anchorage means (12). Through an energy absorbing mechanism (7) impact energy can be absorbed, thus reducing the degree of rotation of the child restraint (1).

Abstract: A seat frame 51 is mounted on a body freely movably back and forth. The frame 51 moves backward by leaving a backrest seat 2 by a pretensioner device 10. A front portion of a spring material 71 supporting a cushion material 62 of the seat 3 is arranged on the front portion of the seat frame 51. A rear-side portion of the spring material 71 is mounted on a rear-side spring mounting member 72 below the backrest seat 2. The mounting member 72 is immovable and extends in a lateral direction. A rear position of a cushion material 62 does not move even if the seat moves backward.

Abstract: A safety seat comprising a unitary molded shell having a “bucket-seat” shape and a safety restraint system integral to the shell. The molded unitary shell has a bottom portion and a back portion. The shell comprises an inner layer and an outer layer made of a carbon fiber laminate with a core situated between the inner and outer layers. The core comprises aluminum sheeting having a honeycomb-like cross-section. A plurality of attachment plates are selectively located within the shell and disposed between the inner and outer layers. The safety restraint system is fastened to corresponding attachment plates. Support plates located on a non-seating surface of the shell are mated with selected attachment plates. A headrest is selectively attached to the safety seat. The safety seat is secured to structural members within a vehicle by mounting brackets. A method for making the shell and assembling the safety seat are disclosed.

Abstract: An occupant safety system for protecting the occupant of a vehicle seat, the system comprising a movable seat supporting member located under the vehicle seat, the supporting member being operatively connected to the vehicle seat so that the seat moves with the supporting member; and a driving member connected to the supporting member by an elongated linking member; wherein the driving member includes a movable actuator connected to the linking member; wherein the driving member is configured to drive the actuator in a rearward direction causing a corresponding rearward movement of the linking member, wherein movement of the linking member in the rearward direction pulls the supporting member and the vehicle seat in the rearward direction.

Abstract: A system for managing an occupant in an occupant compartment of an automotive vehicle, a structure for use in an automobile, and methods of use thereof are provided for protecting an occupant during a near side impact collision.

Abstract: This invention is vehicle seat, which provides enhanced occupant protection in the event of a vehicle rollover. The seat includes a rollover sensor and mechanisms compatible with power-adjustable seat design, that cause rapid distancing of the occupant from the vehicle roof in the event of a rollover. The mechanisms include high-speed motors operating reclining, lateral position, and seat lowering mechanisms, as well as pyro actuators for these mechanisms.

Abstract: A vehicle seat adjustment system for adjusting the position of a portion of a vehicle seat. The system comprises a hydraulic actuator, a primary activation system for operating the hydraulic actuator and adjusting the seat position, and a secondary activation system for the hydraulic actuator. The secondary activation system is arranged to be activated in the event of a detected crash, to provide for movement of the hydraulic actuator to automatically adjust the position of a portion of the seat towards a predetermined position. The secondary activation system comprises a chamber to allow fluid to be displaced from the hydraulic actuator into the chamber. The secondary activation system may additionally comprise a fluid injection unit which supplies a quantity of fluid, preferably gas, to the actuator.

Abstract: Seat lifting devices disposed between a seat support for supporting a seat cushion and a seat mount for mounting the seat support are taught that comprise a front and rear linking mechanisms movably interconnecting the seat support and the seat mount. These linking mechanisms are arranged and constructed to vertically adjust the seat cushion when operated. The rear linking mechanism comprises a first linking arm that is pivotally connected to the seat mount and the seat support, and a second linking arm that is pivotally connected to the seat support. The second linking arm is provided with a rear slide pin that slidably engages a rear guide slot formed in the seat mount. The rear slide pin is arranged and constructed to engage a plurality of teeth formed in the rear guide slot when a large force is applied to the seat support in a direction to separate the seat support from the seat mount.

Abstract: In a longitudinal adjuster (3) for a vehicle seat, in particular a motor vehicle seat, having a first seat rail (5), a second seat rail (8) that can be slid lengthwise relative to the first seat rail (5), and at least one locking element (12) movably borne in the second seat rail (8), reaching outward at least in certain areas through openings (26, 28) of the second seat rail (8) and cooperating with notches (29) of the first seat rail (5) to lock the longitudinal adjuster (3), at least one marginal layer (22?) of the locking element (12) is softer than a marginal area (28?) of the second seat rail (8) bordering the openings (26, 28) and/or a marginal area of the first seat rail (5) bordering the notches (29).

Abstract: Seat lifting devices disposed between a seat support for supporting a seat cushion and a seat mount for mounting the seat support are taught that comprise a linking mechanism movably interconnecting the seat support and the seat mount, so that the seat cushion is vertically adjusted when the linking mechanism is operated, and a seat support pulling means connected to the seat support and the seat mount. The seat support pulling means is adapted to be shortened when the seat support is subjected to an impact.

Abstract: A device for guiding a seat of a vehicle, in particular a motor vehicle, has a running-rail arrangement comprising at least one guide rail arranged on the seat and at least one sliding rail fastened to the vehicle. At least one arresting element is provided. The arresting element arrests the seat of the vehicle in a desired position on the sliding rail and has at least one deformation element which absorbs energy in the event of a crash.

Abstract: A vehicle occupant emergency system comprising: a front seat; a front seat horizontal adjuster; a front seat seat-belt system; releasing devices for releasing the front seat from its pre-emergency horizontal adjustment; moving devices for moving the front seat rearward; stopping members for controlling a maximum extent to which the front seat can be moved rearward; restraining members for restraining the front seat from moving forward after its rearward movement; sensors for sensing a multiplicity of characteristics relative to an emergency; and a control unit for operating the releasing devices and the moving devices in an emergency depending on the received signals from the sensors and its programming.

Abstract: The present invention relates to a safety device (3) for a vehicle bench seat (1) that can be moved via two lateral, parallel guide tracks (2) within a vehicle across an adjustable range and can be locked in various positions, consisting of a safety rail (4), which is arranged roughly in the center between the guide tracks (2) and parallel to these tracks, and of a safety sled (6), which is guided in a relatively flexible manner at least across the actual adjustable range of the bench seat (1). The safety sled (6) is arranged in such a manner that it can move freely lengthwise to the safety rail (4) during regular sliding motions and in positions within the adjustable range of the bench seat (1) and interlocks with the safety rail (4) due to irregular deformations in the area of the bench seat (1).

Abstract: A seat guide for mounting a car seat and to its positional adjustment in a direction of an axis of displacement. The seat guide has two guide rails installed parallel to the axis of displacement and support rollers which cooperate with and move relative to the guide rails to support a vertical load. Lateral guide devices are provided for lateral support in a direction of a lateral axis running essentially perpendicular to both the axis of displacement and the guide rails. The relative motion of the lateral guide devices cooperates with the guide rails overcoming any conditions of elastic rolling friction.

Abstract: A device for counteracting whiplash injury to a person sitting in a seat (1) which can occur due to a rapid change in velocity, such as a collision, primarily from the rear, or similar. The device is characterized by containing means of allowing controlled displacement of the entire seat (1) against the direction of travel during rapid change of velocity, that the seat (1) is provided with control devices which are arranged to give the seat and its occupant an essentially simultaneous and essentially linear movement against the direction of movement and/or an essentially arcuate movement, and that the seat (1) is arranged to stay in a rear position after the change of velocity.

Abstract: In one embodiment, a device is configured to counteract the occurrence of whiplash injury to a person sitting in a seat, which can occur due to a rapid change in velocity, such as in a rear-end collision. The device comprises guide means that, during a change in motion of a vehicle, provide for a change in position of the seat in the form of translation and rotational movement of the seat in a generally backward direction opposite the direction of travel of the vehicle. As the seat and the occupant of the seat move backward relative to the vehicle, the head of the occupant accelerates over a longer distance than the hips of the occupant.

Abstract: A structure of support leg member having a pair of reinforcing pieces formed laterally thereof, which is used with a seat slide device provided in an automotive seat, wherein an inclinable portion is defined in the upper securing portion of the support leg member on which a guide rail of the seat slide device is securely amounted. The inclinable portion allows the guide rail to be inclined by a great load applied thereto in excess of a tolerable amount, thereby protecting the seat slide device against damage. The inclinable portion, for instance, may comprise an upward protuberant bead formed in the upper securing portion so that a pair of spacings are defined between the guide rail and a base portion of that upper securing portion such as to allow inclination of the guide towards the center of the automotive seat.

Abstract: As a moveable part of the vehicle body carrying a vehicle seat moves rearward under the action of an active or passive power source as a result of a vehicle crash, the seat belt which is anchored at the moveable part at one end and a fixed part of the vehicle body at another end is pulled rearward, and performs the function to apply a deceleration to the vehicle occupant in an early phase of the vehicle crash. This is followed by a slight slackening of the seat belt as the moveable part is subjected to a forward force. The active power source typically consists of a high pressure gas generating device, and a passive power source typically consists of a G control member which transmits the deceleration of a vehicle crash to the vehicle occupant from an early phase of the crash, and/or a stopper which applies a forward force to the moveable part as the moveable part moves rearward by a prescribed distance under the action of the power source.

Abstract: An occupant detection system for a vehicle including a seat assembly and a mounting device. The mounting device includes a first member connected to the seat assembly, a second member connectable to the vehicle and connected to the first member at a first point, a floating joint located at a second point engageable with the seat assembly and with the vehicle, and a load sensor located on one of the first member and a second member between the first point and the second point. A compressing force tending to compress the seat assembly toward the vehicle travels through the load sensor, while a pulling force tending to pull the seat assembly from the vehicle travels through the floating joint.

Abstract: A vehicle seat has a back portion deformable forwardly when impacted from the rear by a passenger. A horizontally movable seat platform is slidably mounted to the seat frame and has restraint belts. The seat platform is normally held in an aft position until forward passenger force is applied through the lap belts to the movable platform during a crash.

Abstract: A car seat having a seat portion linked by means of connecting rods to a rail for longitudinal adjustment has a dampening element to transform kinetic energy into frictional or deformation energy. The dampening element is embodied as a separate component and has, on the one hand, an articulated link to a component on the seat portion as well as, on the other hand, to another component on the rail for longitudinal adjustment. The components include a threaded rod and a nut that can rotate around it, as well as a sleeve-shaped component that surrounds at least a part of the nut. The nut can be moved longitudinally relative to the sleeve-shaped component while overcoming a force of friction or deformation.

Abstract: The occupant protective apparatus includes one or more seats 1 respectively supported on a car body so as to be movable along the direction of a force acting on the car body in the case of a car collision and each including a seat belt 3 for restricting an occupant 2 seated on the seat 1, a fluid container 14, the capacity of which can be reduced as the car body is deformed in the car collision, and a force generating unit 5 for applying a force to the seat 1 in the back-and-forth direction of the car body in response to generation of the pressure of fluid filled in the fluid container, such pressure generation occurring when the capacity of the fluid container is reduced.

Abstract: The vehicle occupant protection system can significantly reduce the peak deceleration of the vehicle occupant even with a small vehicle body. The system comprises a seat supported on a vehicle body so as to be slidable in a direction of an input crash load resulting from a vehicle crash; a first member connected to the seat and adapted to deform under the crash load upon occurrence of a vehicle crash; a second member connected to a main part of the vehicle body and adapted to deform under the crash load; and a power actuator for applying a forward force to the seat relative to the vehicle body with a certain time delay after the occurrence of the vehicle crash; the first member being adapted to substantially deform only after the forward force is applied to the seat upon occurrence of a vehicle crash.

Abstract: A device for guiding a seat of a vehicle, in particular a motor vehicle, has a running-rail arrangement comprising at least one guide rail arranged on the seat and at least one sliding rail fastened to the vehicle. At least one arresting element is provided. The arresting element arrests the seat of the vehicle in a desired position on the sliding rail and has at least one deformation element which absorbs energy in the event of a crash.

Abstract: Adjustable support apparatus comprising a support structure including a first seating element and a pivotally attached second seating element each for receiving a selected portion of a body of a user thereon, a rack and pinion adjustment assembly fixed to the support structure for reciprocally adjusting the support structure and a belt and drum adjustment assembly fixed to the support structure for pivotally adjusting the second seating element.

Abstract: In an automotive vehicle body structure comprising a seat carrying member that is moveable with respect to the main part of the vehicle body at the time of a vehicle crash so as to reduce the peak deceleration of the vehicle occupant in the seat, the seat carrying member comprises an elongated member extending in a fore-and-aft direction of the vehicle body and having a portion adapted to be deformable at the time of a vehicle crash. The seat is preferably connected to the elongated member of the seat carrying member at a widthwise center of the seat so that at the time of a vehicle crash, the inertial force of the seat and the vehicle occupant will act in the direction that the elongated member extends and substantially no horizontal moment will be applied on the seat carrying member. A seat position adjustment mechanism is preferably provided between the seat and the elongated member of the seat carrying member.

Abstract: An apparatus (10) includes a seat (11) for a vehicle occupant (18), a support (20) for the seat (11), and an actuator mechanism (40). The seat (11) has a forward position in the vehicle (12) and a rearward position in the vehicle (12). The support (20) enables the seat (11) to move on the support (20) from the forward position to the rearward position in the vehicle (12) during a frontal vehicle collision (13). The actuator mechanism (40), when actuated, moves the seat (11) from the forward position to the rearward position in a first stage of movement and raises a front portion (14) of the seat (11) in a second stage of movement subsequent to the completion of the first stage.

Abstract: The occupant protective apparatus includes one or more seats 1 respectively supported on a car body so as to be movable along the direction of a force acting on the car body in the case of a car collision and each including a seat belt 3 for restricting an occupant 2 seated on the seat 1, a fluid container 14, the capacity of which can be reduced as the car body is deformed in the car collision, and a force generating unit 5 for applying a force to the seat 1 in the back-and-forth direction of the car body in response to generation of the pressure of fluid filled in the fluid container, such pressure generation occurring when the capacity of the fluid container is reduced.

Abstract: In a vehicle occupant protection system, the seat is subjected to a forward deceleration by a power actuator following a frontal vehicle crash substantially without any time delay, and following a rearward movement of the seat with respect to the vehicle body by a prescribed distance, the seat is subjected to a forward acceleration by a stopper attached to a vehicle body to prevent any excessive rise in the forward deceleration of the vehicle occupant. Thereafter, the vehicle seat is required to move substantially integrally with the vehicle body to allow the vehicle occupant to decelerate at a tolerable deceleration level by virtue of a controlled deformation of the vehicle body, and the one-way motion mechanism ensures the vehicle seat to move jointly with the vehicle body once the stopper has stopped the rearward movement of the seat.

Abstract: An apparatus (10) includes seat (11) for a vehicle occupant (15) and a support (20) for the seat (11). The seat (11) has a forward position in a vehicle (12) and a rearward position in the vehicle (12). The support (20) enables the seat (11) to move, relative to the support (20), from the forward position to the rearward position in the vehicle (12) during a frontal vehicle collision (13). The seat (11) moves from the forward position to the rearward position due to a force transmitted to the seat (11) through the legs (16) of the vehicle occupant (15).

Abstract: An airbag seat release system that releases the front seat mounted in a vehicle to move upon deployment of an airbag in the vehicle. The release system includes an actuator connected with a latch mechanism on the seat assembly powered by an electrical signal supplied by the airbag deployment circuit. The latch mechanism is movable between a normally latched position preventing movement of the seat and a released position allowing movement of the seat relative to the vehicle. Upon deployment of the airbag, the actuator is activated responsive to the electrical signal to move the latch to the released position allowing the seat to move relative to the vehicle as the airbag is deployed. A ram connected with the seat assembly simultaneously propels the seat rearward. A stop member controls the extent of movement of the seat and backrest.

Abstract: An apparatus configured to move a vehicle seat away from a vehicle dashboard during or immediately prior to a collision. The apparatus comprises a vehicle seat coupled to a slideable platform. A vehicle collision detector communicates with the slideable platform so that when a vehicle collision condition is detected the slideable platform is triggered to move the vehicle seat.

Abstract: The vehicle occupant protection system can significantly reduce the peak deceleration of the vehicle occupant even with a small vehicle body. The system comprises a seat fitted with a seat belt which is supported on a vehicle body so as to be slidable in a direction of an input crash load, a first actuator for applying an acceleration of a same direction as the crash load upon detection of the vehicle crash to the seat, and a second actuator for applying an acceleration of an opposite direction from the crash load with a prescribed time delay following the detection of the vehicle crash to the seat. Thus, in case of a vehicle crash or other high deceleration situations, the seat is accelerated rearward upon the occurrence of a vehicle crash by the first actuator so that the restraining capability of the seat belt is enhanced by applying to the seat a deceleration higher than the vehicle body deceleration during an early phase of the vehicle crash.

Abstract: A safety system for a motor vehicle having a chassis, including a vehicle chair mounted on the chassis for slidably and rotational movement relative to the chassis under inertial forces above a pre-selected threshold acting on the seat and rider in the event of vehicle collision. The vehicle seat is arranged for angular rotation through a gradually growing radius, simultaneously with, and in a direction opposite to, the slidable linear movement of the vehicle seat. Chest and abdomen safety belts are affixed to the vehicle chair. A spring damper system, capable of undergoing large deformation, couples the vehicle seat to the chassis. Preferably, the spring damper system is non-linear, whose stiffness and/or damping coefficients grow with displacement.

Abstract: The vehicle occupant protection system can significantly reduce the peak deceleration of the vehicle occupant even with a small vehicle body. The system comprises a seat supported on a vehicle body so as to be slidable in a direction of an input crash load resulting from a vehicle crash; a first member connected to the seat and adapted to deform under the crash load upon occurrence of a vehicle crash; a second member connected to a main part of the vehicle body and adapted to deform under the crash load; and a stopper or an actuator for applying a forward force to the seat relative to the vehicle body with a certain time delay after the occurrence of the vehicle crash; the first member being adapted to substantially deform only after the forward force is applied to the seat upon occurrence of a vehicle crash.