Abstract: A longitudinal rail guide of a motor vehicle seat having a bottom rail, with a top rail which is movable in longitudinal direction relative to the bottom rail and with a locking device. The locking device has a guide part which is disposed on the top rail and has at least one guide opening, and for each guide opening there is a blocking part which is disposed so as to be movable in the guide opening. The guide part has a free edge which lies directly opposite an adjacent inner surface of the bottom rail, and before an accident the free edge is located at a small distance from the adjacent inner surface of the bottom rail and after an accident the free edge bears against the adjacent inner surface.

Abstract: A vehicle seat assembly includes a seat back and a seat base extending forward from a lower end of the seat back. The seat base is formed of a first foam member extending laterally across the seat base to absorb loads and a second foam member formed over the first member to form a seating surface of the seat base. The first foam member includes at least one channel for interlocking the first foam member and a second foam member.

Abstract: The invention relates to vehicle seat comprising a seat part and to a restraint device and a corresponding method of manufacture. The vehicle seat comprises an anti-submarining restraint device for preventing an occupant from slipping through on the vehicle seat when decelerated due to a crash, said restraint device being settable to a retracted inactive position and said restraint device being settable to an extended active position. The seat part, in the longitudinal direction of the vehicle, has lateral seat parts on both sides of the seat, a padding defining a seat area and a padding support below said padding. The restraint device is arranged between the padding support and the padding and spaced apart from the lateral parts by means of a locking element provided for locking the restraint device in the active position.

Abstract: An occupant protection device includes: a seat cushion; a seat back; a base portion provided in a vehicle body; a support portion that is provided in the seat back and that overlaps a backrest of the seat back as viewed from front of a vehicle; a reclining angle adjustment portion that changes a reclining angle of the seat back by moving the support portion with respect to the base portion; and a contact portion that is provided in the vehicle body. If the support portion is displaced rearward in a longitudinal direction of the vehicle due to a rearward load that exceeds a prescribed magnitude being applied to the seat back, the contact portion comes into contact with the support portion on both the right and left sides of the seat back with respect to a center portion of the seat back.

Abstract: An occupant protection device which causes less discomfort to an occupant after danger is avoided. When danger is detected (estimated collision time t is less than t1), a seat is adjusted to set the inclination angle of a seatback within a predetermined appropriate range. After that, when the danger is avoided, the inclination angle of the seatback is adjusted a predetermined amount so that the occupant is separated from a seat belt. This eliminates situations in which the tension of the seat belt is kept increased even after the danger is avoided, and as a result, discomfort to the occupant is suppressed.

Abstract: The invention relates to a vehicle seat, having at least a structural part (2), a cushion body (3), a covering (4) that covers the cushion body. The covering (4) has two covering parts (4a, 4b) connected to one another in a tear seam (10). An airbag module (5) includes an airbag (5a), and an airbag pocket (6) accommodating the airbag module (5), which is attached with its two ends (8a, 8b) in an area of the tear seam (10) to the covering (4) and is provided as a force concentration device for guiding the unfolding airbag toward the tear seam (10).

Abstract: In a method for reducing the impact of a force upon a person seated in a safety seat of a motor vehicle at least a seat unit of the safety seat is restrained at least in part by at least one support strap. The support strap is formed with an extension piece configured to lengthen when exposed to a load as a result of an accident or explosion. A winding unit holds the support strap to shorten an effective length of the support strap and to build up a force to maintain the support strap under tension after the support strap underwent a lengthening in an area of the extension piece as a result of a load caused by a force resulting from an accident or explosion so as to reestablish an effective length of the support strap for lengthening during a subsequent force impact.

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: To achieve further weight reduction and thinning of a seat structure. A laminated body obtained by sandwiching a planar member 4 made of cloth between planar members 2 and 3 made of synthetic resin to join them to one another via adhesive agent is used in a shell type frame member of the seat structure. Upon receipt of an impact, delamination is caused between the respective layers configuring the laminated body. Thereby, both the tensile stress and the Izod impact strength of the laminated body are lowered as compared with those of a homogeneous laminated body obtained by joining planer members made of homogeneous materials. That is, impact energy is converted to a force causing delamination between the planar members in the laminated body to be consumed, thereby absorbing the impact energy. Since the shell type frame member itself can absorb the impact, further weight reduction and thinning of the shell type frame member and a seat structure using the same can be achieved.

Abstract: A seat adapter apparatus for fixing a seat frame to a moving part of a seat rail of a vehicle seat of a motor vehicle is provided. The seat adapter apparatus has a seat frame side with a seat mount and an energy absorption device coupled to the seat frame side. The energy absorption device is configured to absorb at least a portion of the kinetic energy of the vehicle seat and/or redirect it to the seat rail in the event of a crash of the motor vehicle.

Abstract: A fully adjustable seat assembly adapted for a motor vehicle with safety features including a blast mitigating device, such as an energy attenuation device, to absorb energy in a controlled manner. Another safety features is a one-hand lap belt release system. The seat assembly preferably has a back cushion support with a seat base that automatically flips-up when not in use. When used in a vehicle turret, the seat assembly can provide for 360 degrees of rotational movement with a bracket and a single bearing.

Abstract: An active headrest apparatus for a vehicle seat. A contact area in which the upper body of a person who is seated in a car in the event of a rear-end collision of the car is moved backward due to an inertial force and contacts a back plate can be increased, and a distance at which a headrest is moved and rises can be increased so that the function of an active headrest can be more faithfully performed and neck injury of the person who is seated in the car can be prevented to the maximum.

Abstract: Disclosed are various seats for vehicles particularly military vehicles that are susceptible to attack by road-bed explosive devices such as land mines or improvised explosive devices. The seats often have rigid seat shells and may include rigid bracing for rigidly securing the seat to the chassis of the vehicle. Typically embodiments include channels and particulate media such as sand disposed in the channels. A gas distribution system is generally employed to pump a gas through the channels and in some embodiments the gas is provided at a pressure sufficient to fluidize the particulate media when an occupant is sitting on the seat.

Abstract: An energy absorbing system for blast mitigation is provided for a suspended support element, such as a gunner seat or medical stretcher, in a vehicle. An energy absorbing element is located in series within at least one suspension element of the seat or stretcher. The energy absorbing element includes an extensible section having a contracted, folded configuration and an extended configuration. A retention element, such as stitching or entangled interlocking fibers, retains the energy absorbing element in the contracted configuration. The retention element remains intact when the energy absorbing element supports a load from the person on the seat or stretcher and fails over a period of time when an explosive force is applied to the vehicle from underneath, causing the vehicle to move upwardly, the extensible section thereby extending in length and absorbing energy. Injury to the person can thereby be reduced.

Abstract: A method for protecting and restraining a passenger on a passenger seat of a vehicle in case of an accident, with the aid of at least one restraint element of a protection and restraint device, an evaluation and control unit for a protection and restraint device for carrying out the method, a protection and restraint device for protecting a passenger having such an evaluation and control unit, as well as a corresponding computer program and computer program product for carrying out the method are described. A positioning applied force is generated as a function of an ascertained current driving situation, the applied force accelerating the passenger away from a vehicle side structure in the direction of the middle of the vehicle if a predefined precrash situation is detected.

Abstract: An occupant protection device includes: a collision prediction part; a seatback actuator that adjusts a reclining angle; a seatbelt retracting part; a reclining angle sensor; and a controller that sets the reclining angle to a target angle and that controls the seatbelt retracting part so that the seatbelt is retracted when the collision prediction part determines that a collision will occur. Accordingly, the controller executes a control so that the driving force of seatbelt retracting part when the reclining angle is decreased is smaller than at least one of the driving force of seatbelt retracting part when the reclining angle is not changed or when the driving force of seatbelt retracting part when the reclining angle is increased.

Abstract: A vehicle seat lifter includes front and rear links with upper ends pivoted to a side frame of the seat and lower ends pivoted to front and rear floor brackets. A front hitting segment is in a front portion of the side frame spaced from a front catch in the front bracket, and a rear hitting segment is in a rear portion of the side frame spaced from a rear catch in the rear bracket. The front hitting segment is stopped by the front catch when the side frame is displaced frontward along with a deformation of the front and rear links due to forces during a frontal collision. The rear hitting segment is stopped by the rear catch when the side frame is displaced rearward along with a deformation of the front and rear links due to forces during a rear collision.

Abstract: Described are energy absorbers for a structure within a vehicle cabin having at least one airbag, an inflator, a control module, and an outer surface positioned adjacent the airbag. The outer surface may include a plurality of mechanical energy absorbers positioned adjacent the airbag and coupled to the outer surface, wherein the outer surface comprises a surface area that is greater than an inflated surface area of the airbag. The outer surface may also include a breakable area positioned adjacent the airbag, wherein the breakable area has a weaker coupling to the outer surface on at least a first side and a stronger coupling to the outer surface on at least a second side.

Abstract: A vehicle seat lock device is provided. The vehicle seat lock device includes a seat lock housing, a striker, a hook member and a blocking member. The seat lock housing is configured to be fixed to one of a seat back and a vehicle body. The striker is configured to be fixed to the other of the seat back and the vehicle body. The hook member is rotatably mounted on the seat lock housing to latch and unlatch the striker by engaging and disengaging the striker, respectively. The blocking member is pivotally mounted on the seat lock housing. The blocking member pivots and contacts with the hook member to prevent the hook member from rotating and to maintain engagement between the hook member and the striker when a load that is higher than a predetermined amount is inputted to the vehicle body.

Abstract: A motor vehicle has at least one vehicle seat (3) and a trim part (1) that extends in the vehicle transverse direction (FQ) behind the vehicle seat (3). A cross member (2) is arranged below and/or behind the trim part (1). The trim part (1) carries a protective element (11) on an end face (6) of the trim part (1) that faces the vehicle seat (3) to protect the trim part (1) from damage caused by contact with the vehicle seat (3).

Abstract: An object of the invention is to provide a structure for an aircraft seat section is configured to be able to have an appropriate impact absorbing stroke in an aircraft having a small interior space. The structure is provided with a survival tub (1) which is an occupant protection member for surrounding from the lower side of the aircraft body, the space for an occupant (51) which includes a seat (50) on which the occupant sits. Preferably, the survival tub (1) is held by link mechanisms (4, 5) and an impact absorption operation section (9) so that during impact, the survival tub (1) can move to the upper side of the aircraft body.

Abstract: A first opening through which an end anchor of a seat belt is inserted from above is formed in a side shield member that covers a side portion of a seat cushion. A plug member that plugs up the first opening and has a belt guide hole through which a belt portion of the seat belt is inserted is fit into the first opening. A reinforcing member having a second opening in a portion corresponding to the first opening is arranged on an inside surface of the side shield member.

Abstract: A seat cushion structure for use in a vehicle seat including a first outer wall and a second outer wall joined to form a plurality of chambers. The seat cushion includes an energy absorption substance disposed within the chambers to absorb occupant load. The seat cushion also includes a plurality of springs disposed within the chambers to further facilitate occupant support and comfort.

Abstract: An apparatus for determining an impact on a vehicle includes: a load detecting portion attached to an end portion of a seat portion of a seat for the vehicle, and detecting a compressing-direction load, and a pulling-direction load; and an impact determining portion determining that the impact is applied on the vehicle in a case where the compressing-direction load, which is equal to or larger than a first predetermined value, is detected and subsequently the pulling-direction load, which is equal to or larger than a second predetermined value, is detected within a first predetermined time period, or in a case where the pulling-direction load, which is equal to or larger than a third predetermined value, is detected and subsequently the compressing-direction load, which is equal to or larger than a fourth predetermined value, is detected within a second predetermined time period.

Abstract: A vehicle seat includes a seat frame, a pad that is attached to the seat frame, an air bag that is attached to the seat frame, a board that is attached to the seat frame and covers the air bag, and a cap that is made of material harder than the pad and is attached to the seat frame, and extends forward of a tip end edge of the board through a gap between the pad and the board.

Abstract: The seat assembly (1) for a land vehicle, sea vessel, or aircraft comprises a vertically adjustable seat (4) supporting the buttocks of a user and a plurality of cables (9-12) disposed between the seat (4) and structural parts (8) of the vehicle. The seat (4) forms at least indirectly the component of a platform (2), which can be displaced along the cables (9-12) and fixed in the respective position on the cables (9-12). The cable sections (9a-12a, 9b-12b) located above and beneath the platform (2) extend between the platform (2) and the structural parts (8) such that they either point toward the vertical center axis (MA) of the platform (2) or are directed away therefrom. The cables (9-12) can be guided via at least one height adjustment device.

Abstract: A vehicle seat assembly includes a seat back and a seat base extending forward from a lower end of the seat back. The seat base is formed of a first foam member extending laterally across the seat base to absorb loads and a second foam member formed over the first member to form a seating surface of the seat base. At least one wire frame section is secured to the first foam member and extends rearwardly therefrom toward a rear of the seat base for mounting the seat base to an associated vehicle body.

Abstract: A seat assembly having a front and a back and adapted to be attached to a floor comprises a seat base and a seat back attached to the seat base, a seat belt mechanism attached to the seat base and free of the floor, a blast mitigation device attached to the seat base and adapted to be secured to the floor, wherein the blast mitigation device has a crumple zone which absorbs energy in the event of a blast, and a front impact dislocation resistance device mounted on the blast mitigation device with a pair of brackets. The front impact dislocation resistance device acts to resist separation of the seat base from the blast mitigation device.

Abstract: The invention relates to vehicle seat comprising a seat part and to a restraint device and a corresponding method of manufacture. The vehicle seat comprises an anti-submarining restraint device for preventing an occupant from slipping through on the vehicle seat when decelerated due to a crash, said restraint device being settable to an extended inactive position and said restraint device being settable to an extended active position. The seat part, in the longitudinal direction of the vehicle, has a padding defining a seat area, and a padding support below said padding. The restraint device is arranged between the padding support and the padding and spaced apart from the lateral parts by means of a locking element (e.g. detent recesses (28) or the like) provided for locking the restraint device in the active position.

Abstract: The mechatronic vehicle safety seat described transforms the geometry of the bottom frame and backrest frame associated with a head restraint when a collision is imminent. On a signal from a pre-crash detection device, or a manual or verbal indication, an energized solenoid instantly releases the forces of torsion springs and triggers the seat bottom and backrest for concurrent movement in sufficient time to mitigate excessive accelerations, loads and moments of forces acting upon seated occupants in response to impact modes. The distorted geometry of the bottom frame and backrest with head restraint enhances the safety performance of the seat belt and reduces the aggressiveness of airbags.

Abstract: A vehicle seat is configured to be adjustable in height having a height adjusting mechanism composed of a link mechanism disposed between a lower rail provided at a vehicle body side and the vehicle seat. The vehicle seat comprises a guide plate provided on the vehicle seat, a gear plate attached to the lower rail and movably provided on the guide plate in a straight direction, a pair of lock arms provided on the guide plate and engageable with a pair of gear portions of the gear plate when an emergency load is applied to a seat belt of a vehicle seat occupant. The pair of gear portions is formed by mutually deviating by half pitch P each between an engagement plane of one gear portion and an engagement plane of the other gear portion.

Abstract: A vehicle seat assembly includes a frame for mounting the seat to a vehicle. The seat assembly also includes a seat pad located proximate the frame. A trim cover is disposed over the seat pad, and includes a seam adjacent a side of the seat pad. An airbag assembly, which includes an airbag and an inflator configured to supply gas to the airbag, is also part of the seat assembly. A force concentrator covers at least a portion of the seat pad for protecting the pad during deployment of the airbag. The force concentrator includes an inner panel attached to the airbag assembly and an outer panel attached to the frame. The panels form a deployment channel for the airbag, and thereby inhibit contact of the airbag with the seat pad as the airbag deploys.

Abstract: The invention relates to vehicle seat comprising a seat part and to a restraint device and a corresponding method of manufacture. The vehicle seat comprises an anti-submarining restraint device for preventing an occupant from slipping through on the vehicle seat when decelerated due to a crash, said restraint device being settable to a retracted inactive position and said restraint device being settable to an extended active position. The seat part, in the longitudinal direction of the vehicle, has lateral seat parts on both sides of the seat, a padding defining a seat area and a padding support (34) below said padding. The restraint device also comprises a tilting element (24) between the padding support and the padding and spaced apart from the lateral parts, said tilting element having at least one deformable element (24) as an energy dissipation element.

Abstract: A vehicle seat includes a seat frame, a first air-bag unit and a second air-bag unit. The seat frame is at least partially covered by a padding material and substantially covered by a cover. The first air-bag unit includes a first air-bag mounted within an outboard side of the seat, and substantially covered by the cover. The second air-bag unit includes a second air-bag mounted within the outboard side of the seat and substantially covered by the cover. The first air-bag is configured to inflate and burst through the cover, when activated, and to bear against an occupant of the seat sitting in a normal position in the seat, thereby exerting a pushing force against the occupant in an inboard direction. The second air-bag is configured to inflate and burst through the cover when activated, and to occupy a position between an occupant of the seat and an exterior side wall of the vehicle.

Abstract: A side air bag restraint sub-assembly is disposed in a cavity in a vehicle seat. A reinforcement panel is secured to either the inflator bolts or the seat fame on one edge. The opposite edge of the reinforcement panel is sewn to a hem on one side of a tear seam.

Abstract: An energy attenuating seat system for an aircraft includes energy attenuating features and is also configured to provide mobility for the occupant. The system is configured to suspend the operator, or gunner, with a support from the roof of the aircraft. The system includes an armored seat or body harness for the occupant. The system provides energy attenuation in multiple directions. The system also optionally includes a floor tether in order to control the movements of the occupant. The system may also include an impact detection system to selectively change the tension of the support and/or floor harness. The system may also include one or more airbags either within in the fuselage of the aircraft, or included in the seat system in order to provide energy attenuation.

Abstract: An occupant protection apparatus includes: aside airbag device including an airbag that deploys in a space between a side surface on an outer side in a vehicle width direction of a seat and a passenger compartment inner wall facing the side surface; and a seat belt device including a seat belt that restrains an occupant. The side airbag device is provided at a side portion on an outer side in the vehicle width direction of the seat and on an inner side in the vehicle width direction of the seat belt. The airbag is ejected outward in the vehicle width direction at a vehicle side impact, secures a space between the passenger compartment inner wall and the occupant, and presses the seat belt outward in the vehicle width direction to apply a tension to the seat belt.

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: In a vehicle seat, two front and two rear links are pivotally connected between a seat cushion frame and a floor of vehicle. Each of the two front links has an arcuate gear region meshed with a corresponding pinion provided to the seat cushion at a point backwardly of that arcuate gear region. Two connecting links are pivotally connected between the respective two front and rear links, such that forward pivot points respective of the two connecting links in the respective two front links are always maintained forwardly of the respective pinions, irrespective of vertical rotation of the two front links. In the case of rear-end collision, such link arrangement allows an excessive backward and downward load to be transmitted through the two connecting links and front links to the two lateral sides of seat cushion frame and dispersed therein, thereby absorbing a corresponding excessive impact.

Abstract: In a vehicle seat, first and second front links as well as first and second rear links are pivotally connected between a seat cushion frame and a floor of vehicle. The first front link has one pivot point pivotally connected with a drive pinion rotatably supported in one side of the seat cushion frame and another pivot point disposed forwardly of that one pivot point. Likewise, the second front link has one pivot point pivotally connected with the other side of the seat cushion frame and another pivot point disposed forwardly of that one pivot point. A first connecting link element is pivotally connected between the afore-said another pivot point of the first front link and the first rear link. A second connecting link element is pivotally connected between the afore-said another pivot point of the second front link and the second rear link.

Abstract: A tiltable vehicle seat has a tiltable metallic seat pan that tilts upon rapid vehicle deceleration. The metallic seat pan is supported for movement between a normal seating position and a tilted or deployed position. The seat pan includes a deformable anti-submarining beam that extends laterally across the seat pan. The deformable anti-submarining beam is deformable in response to a prescribed deformation force exerted from the general direction of a buttocks supporting end thereof with the seat pan in the deployed position.

Abstract: A protective device (10) for protecting an occupant (7) of a vehicle (1), said protective device comprising an airbag (11) and inflation means (12) for inflating said airbag (11), the inflation means (12) being connected to the airbag (11) via a feed pipe (13) for feeding inflation fluid for the purpose of inflating the airbag (11) under predetermined conditions. This protective device further comprises expulsion means (20) for expelling said fluid, which expulsion means cooperate with at least one water detection means (15) so as to act when water is detected to remove said fluid resulting from inflation of the airbag (11), said airbag (11) being provided with a peripheral elastic strap (50) for optimizing the deflation of said airbag (11) when said expulsion means (20) allow said fluid to be removed from the airbag (11).

Abstract: A seat cushion airbag apparatus is applied to a vehicle seat having a seat portion. The seat portion has a seat cushion that is supported from below by a support portion of a seat frame. The apparatus raises a seat face of the vehicle seat, thereby restraining an object on the seat face to prevent the object from moving forward. The apparatus includes an airbag, an inflation fluid generator, and a contact preventing member. The airbag is arranged between the support portion and the cushion. The inflation fluid generator supplies inflation fluid for inflating the airbag, thereby raising the seat face. The contact preventing member is arranged between the support portion and the airbag. A part of the contact preventing member that is in the vicinity of the support portion is flexible. The contact preventing member prevents the airbag from contacting the support portion when the airbag is inflated.

Abstract: A vehicle side airbag apparatus includes a resin seat frame that includes a recess that is elongated in a vehicle top-bottom direction, and that opens to a vehicle front side; a module casing that is disposed inside the recess and includes an outer side wall and an inner side wall that are arranged in parallel with each other, and extend in the vehicle front-rear direction, the outer side wall being disposed outside the inner side wall in a vehicle width direction, in a horizontal sectional view; and a side airbag stored in a folded manner within the module casing. In at least one of the outer side wall and the inner side wall, a low rigidity portion is provided in an area including an entirety of, or a portion of a region that overlaps with an iliac crest of a seated occupant in a side view.

Abstract: The present invention provides a side airbag capable of fully absorbing impact directed to a chest region while keeping an arm from being pressed against the chest region due to inflation. A side airbag 30, an arm facing section 38 which faces an arm H2 of the occupant H in an inflated state has a dented shape and serves to push up the arm H2 to a position where the arm H2 does not overlap a chest H3 region of the occupant.

Abstract: A vehicle seat assembly according to the present disclosure includes an air bag module having a front and a side, and the air bag module includes an inflatable air bag and a flexible cover at least partially covering the air bag. The flexible cover may include a protection portion that extends at least partially along the side of the air bag module. The protection portion has an end spaced away from the front of the air bag module, and the end is releasably connected to another portion of the air bag module. The seat assembly further includes a seat pad disposed outside of the air bag module, and a trim cover positioned over the seat pad. Upon inflation of the air bag, the end of the protection portion is configured to disconnect from the another portion of the air bag module and extend forwardly such that the protection portion extends between the seat pad and the air bag, or between the trim cover and the air bag.

Abstract: The invention relates to an energy absorption device in particular for the seat of an automobile in case of a shock, said device being substantially in the form of a plate including a succession of cutouts following each other in a deformation direction (X) between a first cutout and a last cutout and defining between them at least one bridge extending in a stretching direction (Y) transverse to the deformation direction (X), the first cutout having a shape slightly flaring in the deformation (X) direction towards the following cutouts.

Abstract: A vehicle seat, including two links movable for adjustment in height of the seat, is provided with a reinforcing transmission shaft. The reinforcing transmission shaft is rotatably connected between two frame members of seat cushion frame in the seat, while extending through the two links. Further, two pinions are fixed on the respective two end portions of the reinforcing transmission shaft and respectively meshed with two gear portions defined in the respective two links. With such arrangement, in the case of rear-end collision, most of great load applied to the links is transmitted, via the reinforcing transmission shaft, pinions and gear portions, to each of the two frame members, thereby preventing deformation of one of the two links to avoid lowering of the seat or inclination of one side of the seat as found in a rear-end collision case.

Abstract: An apparatus for preventing rotation of a seat frame for a vehicle having the seat frame that includes an inner link portion and an outer link portion that may be provided with a height adjustment device to adjust a height of a seat and a rack gear link may include a height link, wherein one end portion of the height link may be pivotally connected to a set bracket and the other end portion thereof may be pivotally connected to a cushion side member, and a rotation prevention link provided on the inner link portion wherein one end portion of the rotation prevention link may be pivotally hinged to the height link and the other end portion thereof may be movably installed on the set bracket.

Abstract: A seat base having a first pair of U-shaped tubular elements capable of being deformed, the upper end portion is arranged in a torsionally rigid manner in the vertical direction on a lower surface of the seat part and the lower end portion is arranged in a torsionally rigid manner in the vertical direction on an upper surface of a region of the vehicle floor, and a second pair of S-shaped tubular elements capable of being deformed, the upper end portion is arranged in a torsionally rigid manner in the vertical direction on the lower surface of the seat part and the lower end portion is arranged in a torsionally rigid manner in the vertical direction on the upper surface of the region of the vehicle floor, wherein the first pair of elements is arranged substantially in front of the second pair of elements in the direction of the seat.