DE102013224666A1 - Motor vehicle seat for a vehicle occupant - Google Patents

Abstract

The invention relates to a motor vehicle seat (2) for a vehicle occupant (4), comprising a seat part (6) and a backrest (8), which is pivotally attached to the seat part (6), such that the backrest (8) is in an upright position (FIG. 10) in a rest position (12) and vice versa is pivotable, wherein the motor vehicle seat (2) at least one attachment point (14) which is arranged laterally on the backrest (8), and a retaining means (16) for retaining the vehicle occupant (4 ) in a rest position (12) of the backrest (8), and wherein the retaining means (16) transversely to a longitudinal axis (L) of the backrest (8) at the at least one attachment point (14) can be fastened.

Description

The invention relates to a motor vehicle seat for a vehicle occupant, comprising a seat part and a backrest, which is pivotally attached to the seat part, so that the backrest is pivotable from an upright position to a rest position and vice versa.

Furthermore, the invention relates to a restraint system and a motor vehicle, each having a motor vehicle seat according to the invention.

Motor vehicle seats for motor vehicles are well known. Usually motor vehicle seats are held on a body floor of a motor vehicle. For this purpose, the seat part may comprise a seat frame which is attachable to the body floor of the vehicle.

The backrest is pivotally mounted on the seat part, so that it can be changed in their angle of attack to the seat part. The vehicle occupant using the vehicle seat can thus adjust the angle of attack of the backrest in order to achieve a desired or optimal sitting posture. Usually, the driver of a motor vehicle wants an upright sitting position. For this purpose, the backrest should be adjusted in an approximately vertical position to the seat cushion. In an upright position, the backrest therefore usually has an angle of attack between 60 ° and 110 °. Especially for longer trips, the passenger desires to relax a more horizontal position, which is possible by pivoting the backrest to the rear. In this so-called rest position of the backrest, the backrest usually has an angle of attack between 60 ° and 0 °, preferably between 50 ° and 10 °, on.

To protect a vehicle occupant in an impact of a motor vehicle, seat belt devices in modern motor vehicles are usually designed as three-point seat belts. In the three-point seat belt, the associated webbing is divided by a belt tongue attached thereto, which is connectable to a buckle, in a pelvic belt crossing the pelvis of the vehicle occupant and a diagonal belt diagonally crossing the chest of the vehicle occupant.

From the publication DE 37 41 831 A1 Such a three-point seat belt is known. One end of the webbing is connected to a belt roller, which is arranged on a center column in the vicinity of the body floor of the motor vehicle. From the Gurtroller from the webbing runs along the center column of the motor vehicle to a arranged in a shoulder region of the vehicle occupant on the center pillar of the motor vehicle deflection fitting, which forms the first Gurtbefestigungspunkt the three-point belt. If the three-point belt is applied to secure the vehicle occupant, the webbing runs from the deflection fitting diagonally across the chest or the upper body of the vehicle occupant to a lock tongue which encloses the webbing with an eyelet. The lock tongue is at least so inserted into a buckle that it is releasably secured by the buckle. Together, the tongue and the buckle can form the second attachment point of the three-point belt. The buckle is fastened either to the body floor of the motor vehicle or to the seat part of the motor vehicle seat. This ensures that the webbing extends from the lock tongue across the pelvis of the vehicle occupant to a third attachment point, this third attachment point being formed by a mounting plate on the center pillar of the motor vehicle.

In practice, it has been found that in particular in frontal collisions of motor vehicles for a vehicle occupant on the motor vehicle seat, which is pivoted in the rest position, there is the danger that the vehicle occupant slips underneath or underneath the lap belt despite an applied three-point seat belt. This can lead to injury to the lower body of the vehicle occupant. To avoid this, it is proposed by the abovementioned publication, to provide a bracket in the shoulder region of the backrest, in which the webbing is hacked. This bracket thus forms a fourth attachment point, which is arranged between the aforementioned first attachment point and the second attachment point. If the backrest is now pivoted into a rest position, the webbing extends between the bracket in the shoulder region and the lock tongue diagonally across the upper body of the vehicle occupant, wherein the webbing rests against the upper body of the vehicle occupant.

However, the teachings of the aforementioned disclosure, namely the provision of a further attachment point in the form of a bracket in the shoulder area, does not completely prevent a vehicle occupant from slipping on the motor vehicle seat with a backrest in the rest position under the strap between the bracket and the lock tongue. Due to the diagonal arrangement of the webbing in the area between the bracket in the shoulder area and the lock tongue in the pelvic area, there is still the risk that the head of the vehicle occupant will hook onto the strap during slipping.

It can therefore come to a Unterhaken of the head on the webbing, due to the guidance of the strap over the temple in the shoulder area.

The invention is therefore based on the object to provide a vehicle seat for a vehicle occupant, which effectively protects the vehicle occupant in an accident, even in a rest position of the backrest in an accident.

The object underlying the invention is solved by the independent claims.

For the vehicle seat at least one attachment point is provided, which is arranged laterally on the backrest. In addition, a restraining means for restraining the vehicle occupant in a rest position of the backrest is provided for the vehicle seat according to the invention, wherein the retaining means transversely to a longitudinal axis of the backrest at the at least one attachment point can be fastened.

By arranging the at least one attachment point on one side of the backrest, it is particularly easy to ensure that the at least one attachment point swivels correspondingly when the backrest pivots into the rest position. This ensures that the restraint can always be secured in an optimal position to the upper body of the vehicle occupant. In addition, the attachment of the restraint is necessary only once, regardless of the position of the backrest.

When the retention means is attached to the at least one attachment point, the retention means extends transversely to a longitudinal axis of the backrest. It should be noted that the at least one attachment point is arranged laterally on the backrest. Thus, the retaining means may extend from the attachment point on one side of the seat back across the seat back, and thus across the upper body of the vehicle occupant. This arrangement provides the vehicle occupant with the opportunity for the vehicle occupant to place at least one arm over the restraint. If there is now an impact of a vehicle having such a motor vehicle seat, the restraining means ensures both the retention of the vehicle occupant in a rest position of the backrest and a prevention of slippage of the vehicle occupant under the retaining means. By allowing the vehicle occupant to place at least one arm over the restraint means, the shoulder of the vehicle occupant prevents complete slippage. It also ensures that the head of the vehicle occupant can not get caught on the restraint.

A preferred embodiment of the motor vehicle seat is characterized in that the at least one attachment point is arranged between a pelvic region of the backrest and a shoulder region of the backrest. In practice, it has been found that a lap belt is not suitable for restraining a vehicle occupant in a rest position of the backrest. Rather, the vehicle occupant can slip under the lap belt in an impact of the motor vehicle. In addition, it has previously been explained that a diagonal belt having an attachment point in the shoulder region of the backrest is not suitable for protecting the head of a vehicle occupant from the risk of slippage under the diagonal belt. By arranging the at least one fastening point according to the invention between a pelvic region of the backrest and a shoulder region of the backrest, wherein the retaining means according to the invention can be fastened to the at least one fastening point transversely to a longitudinal axis of the backrest, it is particularly easy to ensure that the vehicle occupant is in a rest position of the backrest is restrained and protected from further hazards, in particular to the head of the vehicle occupant. Particularly preferably, the at least one attachment point is arranged in an upper half between the pelvic area and the shoulder area of the backrest. Thus, the at least one attachment point can be arranged in the chest region of the backrest. Accordingly, the restraint can also cross the backrest in the associated chest area. This allows the upper body of the vehicle occupant to fix particularly well on the backrest.

A preferred embodiment of the motor vehicle seat is characterized in that two attachment points are provided, which are arranged on opposite sides of the backrest, wherein the retaining means can be fastened to the two attachment points. The two attachment points are particularly easy to ensure that a vehicle occupant can not slip sideways between the restraint and the backrest. This increases the safety of the vehicle seat according to the invention. The forces transmitted to the restraint means by the vehicle occupant in the event of a collision of the vehicle can be transmitted to both attachment points. By the retaining means is arranged transversely to the longitudinal direction of the backrest and the attachment points are configured opposite to each other, the aforementioned forces can also be divided equally to both attachment points. In addition, a fastening of the retaining means at two oppositely arranged attachment points is particularly robust, in particular against bending in Longitudinal direction. For example, if a vehicle occupant is restrained by the restraint means in an impact, this results in restraining forces acting on the vehicle occupant. Due to the aforementioned robustness and the orientation of the retaining means, this embodiment ensures that the restraining forces are distributed symmetrically to a longitudinal axis of the backrest and / or the vehicle occupant. Twisting of the upper body about a longitudinal axis or diagonal axis is thus effectively prevented.

A preferred embodiment of the motor vehicle seat is characterized in that the retaining means is releasably securable. The retaining means can thus be decoupled from the backrest of the motor vehicle seat, for example, to be stowed in the motor vehicle when it is not needed. If two attachment points are provided on opposite sides of the seat back, the releasability of the restraint means offers the possibility that the restraint may be fastened similarly to a three-point seat belt after the vehicle occupant sits on the vehicle seat. In addition, the retaining means can be released when the backrest is in the upright position, for example.

A preferred embodiment of the motor vehicle seat is characterized in that the retaining means comprises at least one airbag and / or at least partially formed by the at least one airbag. The airbag can be activated by a control of the motor vehicle seat and / or a motor vehicle. Alternatively or additionally, the airbag or at least one of the airbags may be arranged in a headrest of the motor vehicle seat. Modern vehicles often have multiple airbags. These can be housed for example in the dashboard or in the center column. However, most of these airbags offer the best occupant protection only when the vehicle occupant sits in an upright position on the vehicle seat. If the backrest of the vehicle is even pivoted into a rest position, the aforementioned airbags usually only provide a reduced occupant protection, at least with respect to the upper body of the vehicle occupant. In order to protect the upper body of the vehicle occupant according to the advantageous embodiment, even when the backrest is in the rest position, the retaining means and / or the headrest has at least one airbag or is at least partially formed by an airbag. Since the retaining means and / or the headrest are attached to the backrest, the at least one airbag is arranged independently of the angle of attack of the backrest in the immediate vicinity of the upper body of the vehicle occupant. This at least one airbag therefore provides effective protection against accidents for the upper body of the vehicle occupant, even if the backrest is at rest.

A preferred embodiment of the motor vehicle seat is characterized in that the airbag or at least one of the airbags is designed for deployment in the direction of the chest of the vehicle occupant or in the direction of the backrest of the vehicle seat. The configuration of the restraining means with at least one airbag ensures that the upper body of the vehicle occupant initially strikes the at least one airbag in the case of restraining the vehicle occupant by the restraint means. The airbag dampens the corresponding impact. The upper body of the vehicle occupant is therefore protected by the airbag from high forces.

A preferred embodiment of the motor vehicle seat is characterized in that the airbag or at least one of the airbags is designed for deployment in the direction of the head of the vehicle occupant or in the direction of a headrest of the vehicle seat. With a pivoting of the backrest from an upright position to a rest position, the head of a head airbag or a front airbag, which is arranged for example in the dashboard. In order to effectively protect the head when the seat back is in a rest position, the at least one air bag of the restraint means preferably also deploys towards the head of the vehicle occupant or toward a headrest of the vehicle seat. Since the airbag follows a pivoting of the backrest, the airbag is always placed advantageously, namely in close proximity to the head of the vehicle occupant.

A preferred embodiment of the motor vehicle seat is characterized in that the at least one airbag in a deployed state forms or forms a main area and two cheek areas branching parallel from this main area, the cheek areas being designed for lateral protection of the head of a vehicle occupant. The main area preferably serves to damp a pitching movement of the head of an occupant. The cheek portions may serve to dampen lateral movement of the head of a vehicle occupant and / or to attenuate interference with parts of the vehicle, such as the center pillar or a rear door, or with the head of an adjacent vehicle occupant. The main area and the cheek areas may be formed by separate airbags. Alternatively, it is also possible that at least two or all of the aforementioned areas are formed by an airbag.

A preferred embodiment of the motor vehicle seat is characterized in that the Restoring means on a backrest-facing side has an anti-slip training. The anti-skid design increases the friction between the restraint and a vehicle occupant. The anti-skid formation may have a granular surface structure for this purpose. This ensures a particularly good participation of the vehicle occupant in a vehicle deceleration. If the vehicle is delayed, for example, from an impact, this also applies to the vehicle occupants. An impulse on the vehicle occupant caused by the impact can thus be effectively reduced.

A preferred embodiment of the motor vehicle seat is characterized in that the retaining means is or has a belt. A belt has the advantage that it can be applied directly over the upper body of the vehicle occupant. The belt thus has direct contact with the upper body. A delay of a motor vehicle can thus be transmitted directly to the upper body of the vehicle occupant.

A preferred embodiment of the motor vehicle seat is characterized in that the belt is a chest belt. A chest belt is characterized in that it extends over a chest region of the backrest and / or a vehicle occupant. The belt or the chest belt can therefore also be designed or designated as a sleep belt, in particular for the passenger of a motor vehicle. Particularly preferably, the chest belt extends exclusively in said chest area. The chest belt is preferably designed to be particularly wide, in order to lie over a large area on the chest of the vehicle occupant. The forces occurring between the chest belt and the vehicle occupant during an impact of the motor vehicle can thus be distributed over a large area. The chest belt therefore reduces the risk of injury to the vehicle occupant.

The chest belt also has the advantage that the vehicle occupant can comfortably and easily put his arms over the chest strap. The chest strap thus makes it particularly easy to ensure that the upper body of the vehicle occupant can not slip under the chest belt. Should there be a slippage of the vehicle occupant in an impact of the vehicle, the chest belt would stop the vehicle occupants at the latest in the shoulders. A Unterhaken the head of the vehicle occupant is thus excluded.

A preferred embodiment of the motor vehicle seat is characterized in that the chest belt is convex in its width. The width preferably means the extent in a longitudinal direction of the backrest. This embodiment increases a contact area between the chest belt and the upper body of the vehicle occupant. The forces which occur during an impact of the motor vehicle between the chest belt and the vehicle occupant are thus distributed over a larger contact surface. This embodiment of the chest belt therefore further reduces the risk of injury to the vehicle occupant.

A preferred embodiment of the motor vehicle seat is characterized in that the chest belt is a fan belt or folding belt. Such a chest strap has several compartments or folds, which allow a simple folding of the chest belt. Such a chest strap is therefore particularly easy and quick to stow.

A preferred embodiment of the motor vehicle seat is characterized in that a first of the attachment points has a buckle, which is attached to the backrest, and that the chest belt has a lock tongue at a first end, which is detachably fastened in the buckle. A tongue and a corresponding buckle are basically known. The design of the motor vehicle seat therefore offers the advantage that the chest belt can be created or stored in a manner similar to a three-point belt.

A preferred embodiment of the motor vehicle seat is characterized in that a second of the attachment points has a further buckle, which is attached to the backrest, and in that the chest belt has at a second end a further lock tongue, which is releasably securable in the further buckle. Thus, the entire chest strap can be attached to the backrest or completely decoupled from the backrest. This offers the advantage that the chest strap, for example, if this is not needed, can be stowed elsewhere.

A preferred, alternative embodiment of the motor vehicle seat is characterized in that a second of the attachment points has a Gurtroller, which is attached to the backrest, and that the chest belt with a second end on the Gurtroller is wound. If the chest strap is now released with the lock tongue at the first end of the buckle, the Gurtroller can retract the chest belt. This is for example advantageous if the backrest is in an upright position and the chest strap is not necessarily needed. The retracted chest belt does not interfere and thus offers the vehicle occupant an undisturbed movement space from the chest belt.

A preferred embodiment of the motor vehicle seat is characterized in that the belt at least partially designed as a hose is that forms at least one of the airbags. The belt can therefore form part of the airbag. If several airbags are provided, the belt can also form several of the airbags. For this purpose, the belt has at least one tubular section. Thus, the belt is designed to be particularly compact with the at least one airbag. In an inactive state of the at least one airbag, the belt offers the vehicle occupant a high degree of freedom of movement. If the at least one airbag is activated, the belt with the activated airbag fixes the vehicle occupant on the motor vehicle seat. To fill the at least one airbag devices and / or means are known from the prior art, which may be associated with the motor vehicle seat.

A preferred embodiment of the motor vehicle seat is characterized in that the motor vehicle seat has a belt tensioner for tightening the belt. Basically, belt tensioners for tightening a three-point belt are known from the prior art. Corresponding belt tensioners can also be provided for tightening the belt according to the invention. This is particularly easy to ensure that the vehicle occupant is fixed as closely as possible to the backrest in an accident of the motor vehicle.

A preferred embodiment of the motor vehicle seat is characterized in that the motor vehicle seat has a belt force limiter for limiting the force exerted on the vehicle occupant by the belt in the case of restraint.

A preferred embodiment of the motor vehicle seat is characterized in that the retaining means is a fixed bracket or has a fixed bracket. A sturdy strap provides dimensional stability, which ensures particularly easy handling. The bracket can therefore be attached particularly easily to the backrest. If the bracket can be fastened to the one backrest on the one attachment point, the bracket is preferably designed in an L-shaped manner. Therefore, an attachment point to the backrest is sufficient for such a bracket. On the other hand, if the bracket can be fastened to the backrest at two fastening points arranged opposite one another, the bracket is preferably configured in a U-shaped manner. The forces acting on the bracket by a vehicle occupant can thus be transmitted to the backrest in a particularly uniform and / or symmetrical manner. Furthermore, such a designed bracket provides a fixation of the vehicle occupant to both sides.

A preferred embodiment of the motor vehicle seat is characterized in that the vehicle seat has a kinematics for sinking the bow in the backrest and / or for folding out the bow from the backrest. If the vehicle occupant wishes, for example, a high degree of freedom of movement, it is advantageous if the bracket can be moved out of a movement space of the vehicle occupant. Advantageously, the vehicle seat according to the invention has a receptacle and / or a kinematics for sinking the bracket into the backrest. If necessary, the vehicle occupant can thus drive the bracket into the backrest so that the bracket does not disturb the vehicle occupant further. In the upright position of the three-point belt often ensures adequate occupant protection, so that the bracket is usually sunk in the recording. If the backrest is in a rest position, the vehicle occupant can fold out the bracket from the backrest, in order to ensure the restraint of the vehicle occupant in the rest position. An optionally limited freedom of movement is acceptable for the vehicle occupant in a rest position of the backrest.

A preferred embodiment of the motor vehicle seat is characterized in that the bracket of a floating state in which the bracket relative to the backrest is displaceable in at least one direction, in a locking state can be converted, in which the bracket is locked relative to the backrest. In the floating state, for example, the bracket may be displaced in a direction perpendicular to the seat back. The vehicle occupant can thus particularly easily adapt the bracket to the dimensions of the upper body. Furthermore, the floating state offers the vehicle occupant a high degree of freedom of movement, for example when the vehicle occupant wishes to rotate or move about a longitudinal axis. The bracket can follow the change in the upper body of the vehicle occupant in the floating position. If the vehicle occupant has made the adjustment of the bracket, the bracket can be converted into a locked state. For this purpose, corresponding locking means may be provided for the motor vehicle seat. In the locked state, the bracket provides the vehicle occupant with support and ensures a fixation of the upper body of the vehicle occupant on the backrest. The bracket can also be automatically transferred to the locked state. This is done for example by means of a vehicle acceleration-sensitive unit and / or in response to a detection of an accident phase controllable locking mechanism in the accident. The transfer to the locked state can be done alternatively or in addition to and / or by triggering an airbag.

A preferred embodiment of the motor vehicle seat is characterized in that the motor vehicle seat has a strap tightener for pressing the strap against the upper body of the vehicle occupant. This is useful, for example, if the bracket does not rest against the upper body of the vehicle occupant.

Upon detection of an accident, the Bügelstraffer can be activated. The strap tightener can be configured analogously to a known belt tensioner.

A preferred embodiment of the motor vehicle seat is characterized in that the motor vehicle seat has a Bügelkraftbegrenzer for limiting the force acting on the bracket and / or acting between the bracket and a vehicle occupant force. The ironing force limiter can be configured analogously to a known belt force limiter.

A preferred embodiment of the motor vehicle seat is characterized by at least one further attachment point, which is arranged laterally on the seat part, and a further retaining means for restraining the vehicle occupant on the seat part, wherein the further retaining means transverse to a longitudinal axis of the seat part on the at least one further Attachment point is fastened. Analogous to the backrest, the seat part can be provided with an attachment point. This is set up and designed for fastening the further retaining means. Analogous to the backrest, the further retaining means extends transversely to a longitudinal axis of the seat part. Thus, the legs of the vehicle occupant can be fixed to the seat part. The further retaining means may be designed and / or configured in a similar manner as the retaining means for the backrest. For example, it is advantageous if the further retaining means for the seat part also has at least one airbag. Thus, the lower body of the vehicle occupant can be particularly easily and effectively protected in an accident. The embodiments explained with regard to the restraint means for the backrest and the advantages explained with them apply analogously to the further restraint means.

A preferred embodiment of the motor vehicle seat is characterized by an automatically activatable erecting means for erecting the backrest and / or an automatically activatable adjusting means for adjusting the seat part. The erecting means and / or the adjusting means can be automatically activated, for example, before and / or with an accident of the vehicle. For this purpose, the vehicle may have corresponding recognition systems. These can for example also cause the activation of an airbag. The erecting means can raise the backrest in a preferred position upon activation. The same can also be provided for the seat part. Thus, the seat part can be moved by means of the adjusting means in a corresponding preferred position. Preferably, the seat part is raised on a front side to prevent the vehicle occupant from slipping forward.

A preferred embodiment of the motor vehicle seat is characterized by a headrest, which is attached to the backrest, and the headrest associated side cheeks for protecting the head of the vehicle occupant, wherein the side cheeks are movable to protect the head laterally. A headrest attached to the backrest is known from the prior art. Such headrests usually serve to protect the head of a vehicle occupant in a rear impact. In this case, the headrest prevents the head from being moved too fast and / or too far back. However, known from the prior art headrests offer little or no lateral protection of the head. It is therefore preferably provided that the headrest are assigned side cheeks that protect the head of the vehicle occupant from the side. These side cheeks can be configured such that they can be moved out of the headrest, for example. Further, the side cheeks may include airbags to further protect the head of the vehicle occupant. Alternatively, it may be provided that the side cheeks are arranged so firmly that the headrest is configured U-shaped. In order to protect the head of the vehicle occupant advantageous, the side cheeks can be designed, for example, by a rotation of the headrest about a transverse axis movable. For this purpose, the headrest can be designed to be correspondingly rotatable. The method of the headrest can be done by and / or with the triggering of an airbag.

According to a further aspect, the object of the invention is achieved by a restraint system with a vehicle seat according to the invention, wherein the restraint system comprises a three-point belt for restraining the vehicle occupant in the upright position, and wherein the restraint means is formed separately and / or decoupled from the three-point belt.

In this case, features, details and advantages that are described in connection with the vehicle seat according to the invention apply, of course, in connection with the restraint system according to the invention and in each case vice versa, so that with respect to the disclosure of the individual aspects of the invention is always reciprocal reference or can be.

A three-point belt is known in the art. At the beginning it was explained to the three-point belt that this can protect a vehicle occupant, if the backrest is in an upright position. Is the backrest in one Rest position, the three-point belt shows weaknesses that are resolved with the vehicle seat according to the invention. In order to ensure that the vehicle occupant is protected both in an upright position of the backrest and in a rest position of the backrest, the restraint system comprises both the three-point belt and the at least one retaining means. The decoupling and / or separation of the at least one restraining means from the three-point belt ensures that the vehicle occupant is protected in every position of the backrest.

A preferred embodiment of the invention is characterized in that the retaining means has at least 1.5 times the width of a width of the three-point belt. Due to its arrangement in the pelvic region of the vehicle occupant has been found in practice that the three-point belt is practically limited in its width. However, this limitation does not apply to the retention means according to the invention. Rather, it has been found that the width of the restraint has an influence on the restraint ability of the vehicle occupant. Therefore, a particularly wide retention means is preferred. For example, the retention means has at least 1.5 times, more preferably at least 2 times or at least 3 times, the width of the three-point belt. By width is preferably meant the mean width or the maximum width.

According to another aspect, the object of the invention is achieved by a motor vehicle with a vehicle seat according to the invention or with a restraint system according to the invention.

The invention will be explained below with reference to preferred embodiments with reference to the accompanying figures. Showing:

1 a transverse view of the vehicle seat in an upright position;

2 a transverse view of the motor vehicle seat in a rest position;

3 different settings of the motor vehicle seat;

4 a further transverse view of the vehicle seat;

5 a sectional view of the vehicle seat in the region of at least one attachment point;

6 a plan view of a design of the belt;

7 a plan view of a further embodiment of the belt;

8th a sectional view of the motor vehicle seat in the region of the applied belt;

9 a sectional view of the motor vehicle seat in the region of the applied belt with activated airbag;

10 a plan view of an embodiment of the airbag;

11 a further transverse view of the motor vehicle seat with illustrated airbag;

12 a further transverse view of the motor vehicle seat with illustrated airbag;

13 a sectional view of the vehicle seat in the region of the applied bracket;

14 a further transverse view of the vehicle seat with a further retaining means for the thighs of the vehicle occupant;

15 a further transverse view of the vehicle seat with an attached seat part;

16 a further transverse view of the motor vehicle seat with a seat recess for the seat part;

17 a further transverse view of the vehicle seat with staff backrest;

18 a further transverse view of the vehicle seat with controllable Gurtroller and / or belt tensioners;

19 a further transverse view of the vehicle seat with the headrest associated side cheeks;

20 a further plan view of the vehicle seat with the side cheeks in passive position;

21 a further plan view of the vehicle seat with the side cheeks in the active position;

22 a further plan view of the motor vehicle seat with a first alternative embodiment of the side cheeks in passive position;

23 a further plan view of the motor vehicle seat with a first alternative embodiment of the side cheeks in the active position;

24 a further transverse view of the vehicle seat with the first alternative embodiment of the side cheeks in passive position;

25 a further transverse view of the vehicle seat with the first alternative embodiment of the side cheeks in a region between the passive position and the active position;

26 a further transverse view of the vehicle seat with the first alternative embodiment of the side cheeks in the active position;

27 a further transverse view of the vehicle seat with a second alternative embodiment of the side cheeks in passive position; and

28 a further transverse view of the vehicle seat with the second alternative embodiment of the side cheeks in the active position.

In 1 is the motor vehicle seat according to the invention 2 for a vehicle occupant 4 shown, wherein the vehicle occupant 4 represented by a mechanical model. The motor vehicle seat 2 includes a seat part 6 and a backrest 8th , The backrest 8th is on the seat part 6 hinged. This is the backrest 8th from an upright position 10 as they are in 1 is shown in a rest position 12 as they are in 2 is shown, pivotable. From the rest position 12 can the backrest 8th of course, back to the upright position 10 be panned. The pivoting is thus reversible.

The seat part 6 often has a frame (not shown), which on a body floor (not shown) of a motor vehicle (not shown) can be fastened. By means of the frame can be a position of the seat part 6 adjust relative to the body floor. For example, the height and / or the longitudinal position of the seat part 6 be changed relative to the body floor. To the backrest 8th opposite the seat part 6 To pivot, can be a hinge connection between the seat part 6 and the backrest 8th be provided. The backrest is preferred 8th on the frame of the seat part 6 attached pivotally. Usually the backrest is 8th at the rear part of the seat part 6 hinged. At the front part of the seat part 6 can be a foot part 18 be attached pivotally for placing the feet.

In 3 is the motor vehicle seat 2 shown in different settings. The setting A shows the vehicle seat 2 with the backrest 8th in an upright position 10 , The setting C shows the vehicle seat 2 with the backrest 8th in a rest position 12 , The setting B shows the vehicle seat 2 with the backrest 8th in a retention position 20 in which the vehicle occupant is exposed to statistically very low risk of injury.

For restraining the vehicle occupant 4 at rest 12 the backrest 8th is a restraint 16 provided, as exemplified in 4 is shown. As a retention agent 16 a belt or a chest strap is provided. The retention means 16 may alternatively be designed as a bracket, in particular as a fixed bracket. To the retention means 16 on the backrest 8th , in particular releasably, fasten, is at least one attachment point 14 provided, each side of the backrest 8th is arranged. This is the restraint 16 transverse to a longitudinal axis L of the backrest 8th at the at least one attachment point 14 , in particular detachable, attachable.

In 5 is the backrest 8th in the range of at least one attachment point 14 shown in cross section. At the in 5 shown retaining means 16 it is a rollable chest strap 16 , The chest strap 16 is to one end on a Gurtroller 22 attached and rolled up by this. At the other end of the chest belt 16 is a belt tongue 24 attached. With the belt tongue 24 the chest strap can advance 16 across the upper body of the vehicle occupant 4 be placed so that the belt tongue 24 in a buckle 26 can be inserted, which is the belt tongue 24 releasably secured. The Gurtroller 22 is at a first attachment point 14 on the backrest 8th attached. The backrest 8th also has a second, the first attachment point 14 opposite arranged second attachment point 14 on where the buckle 26 arranged and / or fixed. The second attachment point 14 So it's on the opposite side of the backrest 8th arranged. This can be particularly easily ensured that the chest belt 16 transverse to a longitudinal axis L of the backrest 8th is aligned.

In 6 is an advantageous embodiment of the chest belt 16 shown. At one end of the chest strap 16 is the belt tongue 24 shown for attachment to the buckle 26 is trained. The other end of the chest strap 16 is not completely shown, since the end of a Gurtroller for example 22 is attached. Between these two ends is the chest strap 16 significantly wider than at the respective ends designed. Thus, the chest strap 16 formed convex in width. The chest strap 16 may for example have a width of more than 10 cm, 15 cm or 20 cm. This great width of the chest strap 16 ensures that between the chest strap 16 and the upper body of the vehicle occupant 4 A high friction with low surface load arises when it comes to an accident of the motor vehicle. This friction ensures that the vehicle occupant 4 slipping or dipping under the chest strap 16 is prevented. The low surface load Ensures that the upper body of the vehicle occupants 4 is not exposed to excessive forces.

In the 7 is another embodiment variant of the chest belt 16 shown. Both at the left end and at the right end has the chest strap 16 in each case two sections, which for fastening to a respectively associated attachment point 14 are formed. Thus, for the corresponding motor vehicle seat 2 a total of four attachment points 14 to provide, of which two each on one side of the backrest 8th are to be arranged. There are two attachment points each 14 arranged opposite. This arrangement ensures a uniform distribution of force and prevents a reversal of the chest belt 16 , The motor vehicle seat 2 with such a chest strap 16 is therefore very safe.

Both variants of the chest strap 16 from the 6 and 7 are each an airbag 28 to be taken, the airbag 28 on an underside of the chest strap 16 is arranged, or wherein the airbag 28 a part of each chest strap 16 forms. Particularly preferred may be an airbag area of the chest belt 16 be designed as a hose, the respective airbag 28 forms.

In 8th is the motor vehicle seat 2 in the area of the backrest 8th shown in cross-section, wherein an upper body of the vehicle occupant 4 through the chest strap 16 on the backrest 8th is fixed. This was the belt tongue 24 passed over the upper body and into the belt buckle 26 plugged in. Through the backrest 8th and the attached chest strap 16 is the upper body of the vehicle occupant 4 completely entwined. Should it now be an accident of a motor vehicle with the vehicle seat according to the invention 2 come, the airbag can 28 of the chest strap 16 to be activated. This is the airbag 28 filled with a working gas. In the 9 is the airbag 28 activated or filled filled with gas. The activated airbag 28 presses the upper body of the vehicle occupant 4 to the backrest 8th of the vehicle seat 2 , This increases the friction between the upper body of the vehicle occupant 4 and the backrest 8th as well as between the upper body of the vehicle occupant 4 and the chest strap 16 , With the increased friction is particularly easy to ensure that the vehicle occupant 4 takes an active part in the vehicle deceleration of a motor vehicle in order to be exposed to a reduced impulse in the event of a possible impact of the motor vehicle.

Particularly preferably, the airbag extends 28 over a middle area of the chest strap 16 as in the example 6 and 7 is shown. According to a further advantageous embodiment, it is possible that the chest belt 28 towards a head of the vehicle occupant 4 and / or toward a headrest 30 of the vehicle seat 2 extends. This ensures that the airbag 28 the head of the vehicle occupant 4 even then protects when the backrest 8th in a rest position 12 is. A corresponding embodiment of the airbag 28 is in 10 shown. The airbag 28 has a main area 32 and two cheek areas 34 on, with the cheek areas 34 themselves to the sides of the head of the vehicle occupant 4 extend. Through the main area 32 the head is protected in particular with a strong pitch. The cheek areas 34 protect the head of the vehicle occupant 4 during a transverse movement and / or before an impact with a center pillar or with a door of the motor vehicle.

Furthermore, it is advantageously provided that the airbag 28 a facial area 36 extending in the direction of the face of the vehicle occupant 4 extends upon activation. A corresponding facial area 36 is in the 11 shown. This facial area 36 of the airbag 28 protects the face of the vehicle occupant 4 in an impact of the motor vehicle. Should an airbag in a dashboard or in another front area of the vehicle interior for the vehicle occupants 4 standing on the motor vehicle seat 2 at rest 12 sitting, for example, be ineffective due to the increased distance, the facial area takes over 36 of the airbag 28 the corresponding task. Another embodiment of the airbag 28 with a facial area 36 is in 12 shown. So can the face area 36 close to the face of the vehicle occupant 4 issue. A particularly advantageous embodiment is further characterized in that the cheek areas 34 and the facial area 36 through a common, uninterrupted airbag 28 are formed. The airbag 28 can therefore with the facial area 36 and the two cheek areas 34 Be formed U-shaped.

In the 13 is the motor vehicle seat 2 in the area of attachment points 14 the backrest 8th shown in cross section. The retention means 16 , which at the two attachment points 14 is attached as a solid strap 16 designed. At the same time take the ends 38 of the temple 16 in U-shaped shots 40 at attachment points 14 attached and / or arranged. With the edging of the ends of the bracket 16 on the U-shaped recordings 40 fastened, in particular snapped or clipped. On the inside of the temple 16 For example, a damping layer, in particular a soft foam, can be introduced, which is attached when the strap is fastened 16 at the vehicle occupants 4 invests. Thus, the temple offers 16 a high comfort. The coat hanger 16 is preferably made of plastic. Thus, the hanger 16 especially light and easy manageable. In addition, the motor vehicle seat 2 , especially in the backrest 8th , a tightener 42 exhibit. In an accident of the motor vehicle, the bracket 16 through the penalty 42 to the backrest 8th used. This can for example by means of a cable 43 respectively. This will be the vehicle occupant 4 to the backrest 8th pressed so that the friction between the vehicle occupants 4 and the backrest 8th as well as the friction between the vehicle occupants 4 and the hanger 16 increase. The vehicle occupant 4 Therefore, effectively takes part in a deceleration of the motor vehicle.

In 14 is the motor vehicle seat 2 reproduced in a similar embodiment as in 4 , Reference is made to the corresponding explanations, in particular the reference numerals mentioned therein. The motor vehicle seat 2 out 14 however, has another attachment point 44 on, the side of the seat part 6 is arranged. There is also another retention means 46 for restraining the vehicle occupant on the seat part 6 provided, wherein the further retaining means 46 transverse to a longitudinal axis M of the seat part 6 at the at least one further attachment point 44 is fastened. The other retention means 46 serves to restrain one or both thighs of the vehicle occupant 4 , Basically, the other retention means 46 in an analogous way to the retaining means 16 be designed as it is on the backrest 8th is appropriate. On individual refinements, features and / or advantages associated with the on the backrest 8th fastenable retention means 16 are discussed, reference is made. Particularly preferred is on both sides of the seat part 6 each another attachment point 44 provided on which the further retaining means 46 can be attached. The other retention means 46 may be formed in a similar manner as a belt, in particular a thigh belt, or as a bracket. These embodiments provide in an analogous manner the same advantages as they attach to the belt and / or the bracket 16 over the upper body of the vehicle occupant 4 were explained.

In the 15 is the motor vehicle seat 2 with a salaried seat part 6 or with an employed seat cushion of the seat part 6 shown. For example, the seat part 6 be made in the manner that it has an angle α to a body floor. Particularly preferably, an automatically activatable adjusting means is provided for this purpose, which is the seat part 6 automatically detects when an accident is detected. This offers the seat part 6 the vehicle occupant 4 a higher hold against an unwanted forward movement.

To a forward movement of the vehicle occupant 4 further complicating an accident, the seat part 6 of the vehicle seat 2 a seat recess 48 on, as for example in 16 is shown. The as a recess in the seat part 6 designed seat recess 48 helps the vehicle occupant 4 effectively participates in a deceleration of the motor vehicle, so as to be exposed to the least possible impulse in an accident.

To protect the vehicle occupant 4 To further increase, is an automatically activated Aufrichtmittel for straightening the backrest 8th intended. Thus, the angle β between the backrest 8th and a body floor, as in 17 shown enlarged. The erecting means can be designed, for example, as a pyrotechnic muscle, as a pneumatic and / or as an electromechanical actuator. With a view to 3 can the backrest 8th from a rest position 12 for example, in a retention position 20 , in a rest position 10 or moved to another advantageous position. By adjusting the backrest 8th can the vehicle occupant 4 be prevented from rotating about its longitudinal axis. Particularly preferred is the backrest 8th erected so until the vehicle occupant 4 on a safety belt system, in particular a three-point belt, of the motor vehicle rests. This is the vehicle occupant 4 additionally protected by the corresponding safety belt system.

When raising the backrest 8th is it possible for the vehicle occupant 4 With a belt of the seat belt system comes into firm contact before a desired angle β between the backrest 8th and a body floor is reached. Therefore, it is advantageously provided that the safety belt system is set up and / or designed such that a on the upper body of the vehicle occupant 4 adjoining diagonal belt of the seat belt system of a Aufrichtbewegung the backrest 8th follows, provided that the backrest is in the area of an upright position. For example, this is a Gurtroller 50 and / or a belt tensioner 52 of the seat belt system. Thus, the backrest 8th be placed in any angular position β to the body floor, which is a particularly high level of protection of the vehicle occupant 4 guaranteed.

The 19 to 21 show an embodiment of the motor vehicle seat 2 holding the head of a vehicle occupant 4 can protect against lateral shocks. These are on the headrest 30 Sidewall 54 intended. The side cheeks 54 From a passive position, in which the head is freely movable laterally, into an active position, in which the side cheeks 54 restrict the lateral freedom of movement of the head, be moved and vice versa. For example, in 20 a passive position of the side cheeks 54 shown. These side cheeks 54 are pivotable on the headrest 30 fastened and can move in the direction of the head of the vehicle occupant 4 be pivoted. In 21 are the ones in the direction of the head of the vehicle occupant 4 pivoted sidewalls 54 shown. The side cheeks 54 thus serve in the active position for lateral protection of the head. Both in the active position and in the passive position, the side cheeks 54 be arrested. From the 20 and 21 it turns out that the sidewalls 54 about a longitudinal axis of the backrest or the neck support are pivotable.

The 22 and 23 show in plan view an alternative embodiment of the headrest 30 with the sidewalls 54 , Here are the headrest 30 and the sidewalls 54 an integral and / or one-piece component. This allows the headrest 30 and the sidewalls 54 be made very compact and / or resistant. To the side cheeks 54 from a passive position, such as in 22 is shown in an active position, such as in 23 is shown to move, the headrest 30 twisted about a transverse axis Q. The transverse axis Q can transverse to a longitudinal axis L of the backrest 8th be aligned.

The 24 to 26 show the previously described embodiment of the motor vehicle seat 2 in a transverse view, the assembly of headrest 30 and sidewalls 54 from a passive position, as in 24 is shown in an active position, as in 26 is shown, is transferred. In the passive position, the side cheeks 54 to the backrest 8th subsequently or in the direction of the backrest 8th be aligned. Particularly preferred form the side cheeks 54 with the backrest 8th a steady contour. This orientation of the side cheeks 54 offers the vehicle occupants 4 a great freedom of movement, especially if no lateral head support is needed. The 25 shows the unit from headrest 30 and sidewalls 54 in a transitional phase from the passive position to the active position. It can be seen that the headrest 30 is rotated in the arrow direction about the transverse axis Q.

The 27 and 28 show in a side view the side walls 54 in an alternative embodiment. After that, the headrest points 30 and / or the backrest 8th a kinematics for sinking the sidewalls 54 in the headrest 30 and / or the backrest 8th on. By means of kinematics the sidewalls can 54 from the headrest 30 be at least partially pulled out to the head of the vehicle occupant 4 protect sideways. In 28 this movement is indicated by the arrow. The kinematics can also be designed in such a way to the side cheeks 54 locked in the extended state and / or in the retracted state.

LIST OF REFERENCE NUMBERS

2

 Automotive seat

4

 passenger

6

 seat part

8th

 backrest

10

 upright position

12

 rest position

14

 attachment point

16

 Retention means

18

 footboard

20

 Restraint position

22

 belt roller

24

 belt tongue

26

 buckle

28

 air bag

30

 headrest

32

 Main area of the airbag

34

 Cheek area of the airbag

36

 Face area of the airbag

38

 Ends of the restraint

40

 U-shaped receptacle

42

 firmer

43

 cable

44

 further attachment point

46

 another means of retention

48

 seat recess

50

 belt roller

52

 pretensioners

54

 side cheek

A

 Adjustment of the vehicle seat

B

 further adjustment of the motor vehicle seat

C

 further adjustment of the motor vehicle seat

L

 Longitudinal axis of the backrest

M

 Longitudinal axis of the seat part

Q

 transverse axis

α

 angle

β

 angle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3741831 A1 [0006]

Claims (24)

Motor vehicle seat ( 2 ) for a vehicle occupant ( 4 ), comprising - a seat part ( 6 ) and - a backrest ( 8th ) attached to the seat part ( 6 ) is pivotally mounted so that the backrest ( 8th ) of an upright position ( 10 ) in a rest position ( 12 ) and vice versa, characterized by - at least one attachment point ( 14 ), each at the side of the backrest ( 8th ), and - a retaining means ( 16 ) for restraining the vehicle occupant ( 4 ) in a rest position ( 12 ) of the backrest ( 8th ), wherein - the retention means ( 16 ) transverse to a longitudinal axis (L) of the backrest ( 8th ) at the at least one attachment point ( 14 ) is attachable. Motor vehicle seat ( 2 ) according to claim 1, characterized in that the at least one attachment point ( 14 ) between a pelvic region of the backrest ( 8th ) and a shoulder region of the backrest ( 8th ) is arranged. Motor vehicle seat ( 2 ) according to one of the preceding claims, characterized by two attachment points ( 14 ) on opposite sides of the backrest ( 8th ), wherein the retaining means ( 16 ) at the two attachment points ( 14 ) is attachable. Motor vehicle seat ( 2 ) according to one of the preceding claims, characterized in that the retaining means ( 16 ) is releasably attachable. Motor vehicle seat ( 2 ) according to one of the preceding claims, characterized in that the retaining means ( 16 ) at least one airbag ( 28 ) or of the at least one airbag ( 28 ) is at least partially formed. Motor vehicle seat ( 2 ) according to claim 5, characterized in that the airbag ( 28 ) or at least one of the airbags ( 28 ) for deployment in the direction of the chest of the vehicle occupant ( 4 ) or in the direction of the backrest ( 8th ) of the vehicle seat ( 2 ) is trained. Motor vehicle seat ( 2 ) according to one of claims 5 to 6, characterized in that the airbag ( 28 ) or at least one of the airbags ( 28 ) for deployment in the direction of the head of the vehicle occupant ( 4 ) or in the direction of a headrest ( 30 ) of the vehicle seat ( 2 ) is trained. Motor vehicle seat ( 2 ) according to claim 7, characterized in that the at least one airbag ( 28 ) in a deployed state a main area ( 32 ) and two parallel from this main area ( 32 ) branching cheek areas ( 34 ), the cheek areas ( 34 ) for the lateral protection of the head of the vehicle occupant ( 4 ) are configured. Motor vehicle seat ( 2 ) according to one of the preceding claims, characterized in that the retaining means ( 16 ) on one to the backrest ( 8th ) directed side has an anti-slip training. Motor vehicle seat ( 2 ) according to one of the preceding claims, characterized in that the retaining means ( 16 ) is a belt. Motor vehicle seat ( 2 ) according to claim 10, characterized in that the belt ( 16 ) is a chest strap. Motor vehicle seat ( 2 ) according to one of claims 10 to 11, characterized in that the belt ( 16 ) is convex in its width. Motor vehicle seat ( 2 ) according to one of claims 10 to 12, characterized in that the belt ( 16 ) is a fan belt or folding belt. Motor vehicle seat ( 2 ) according to one of claims 10 to 13, characterized in that the belt ( 16 ) is at least partially designed as a hose, the at least one of the airbags ( 28 ). Motor vehicle seat ( 2 ) according to one of claims 10 to 14, characterized in that the motor vehicle seat ( 2 ) a belt tensioner for tightening the belt ( 16 ) having. Motor vehicle seat ( 2 ) according to one of claims 1 to 9, characterized in that the retaining means ( 16 ) is a solid strap. Motor vehicle seat ( 2 ) according to claim 16, characterized in that the motor vehicle seat kinematics for sinking the bracket ( 16 ) in the backrest ( 8th ) and / or for folding out the bracket ( 16 ) from the backrest ( 8th ) having. Motor vehicle seat ( 2 ) according to one of claims 16 to 17, characterized in that the bracket ( 16 ) of a swimming condition in which the bracket ( 16 ) opposite the backrest ( 8th ) is displaceable in at least one direction, can be converted into a locking state in which the bracket ( 16 ) relative to the backrest ( 8th ) is locked. Motor vehicle seat ( 2 ) according to one of the preceding claims, characterized by at least one further attachment point ( 44 ), each side of the seat part ( 6 ) and another retention means ( 46 ) for restraining the vehicle occupant on the seat part ( 6 ), wherein the further retention means ( 46 ) transversely to a longitudinal axis of the seat part ( 6 ) at the at least one further attachment point ( 4 ) is attachable. Motor vehicle seat ( 2 ) according to one of the preceding claims, characterized by an automatically activatable Aufrichtmittel for erecting the backrest ( 8th ) and / or an automatically activatable adjusting means for adjusting the seat part ( 6 ). Motor vehicle seat ( 2 ) according to one of the preceding claims, characterized by a headrest ( 30 ) on the backrest ( 8th ), and the headrest ( 30 ) associated side cheeks ( 54 ) for protecting the head of the vehicle occupant ( 4 ), with the side cheeks ( 54 ) are movable in such a way to protect the head laterally. Restraint system with a vehicle seat ( 2 ) according to one of the preceding claims, wherein the restraint system comprises a three-point belt for restraining the vehicle occupant ( 4 ) in the upright position, and wherein the at least one retaining means ( 16 . 46 ) is separated and / or decoupled from the three-point belt is formed. Restraint system according to claim 22, characterized in that the at least one retaining means ( 16 . 46 ) has at least 1.5 times the width of a width of the three-point belt. Motor vehicle with a motor vehicle seat according to one of claims 1 to 21 or with a restraint system according to one of claims 22 to 23.

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