DE102022211709A1 - Vehicle seating arrangement for a vehicle - Google Patents

Abstract

The invention relates to a vehicle seat arrangement 1 for a vehicle 2 with a vehicle seat 3 for receiving a vehicle occupant 4, with a first belt device 8 for securing the vehicle occupant 4, wherein the first belt device 8 has a first shoulder belt section 10, wherein the first belt device 8 is designed as a three-point belt with an upper and two lower first connection points, wherein the upper first connection point is arranged fixedly to the vehicle, with an airbag section 14 with an airbag, wherein in an operating state the airbag section 14 is arranged in the region of the first shoulder belt section 10, wherein the airbag section 14 is fastened to the vehicle seat 3.

Description

Technical area:

The invention relates to a vehicle seat arrangement for a vehicle with the features of claim 1.

Background:

In the past, very little attention was paid to protecting vehicle occupants. Over time, vehicle design changes were made, so that crumple zones were created to protect vehicle occupants. In addition, seat belts were introduced across the board to further increase the level of protection. When the airbag was introduced, it was initially only intended for the driver. Due to the significantly increased level of protection achieved, the airbag was used for front passengers and other vehicle occupants. Over time, the arrangement of airbags was constantly expanded, so that roof airbags, side airbags, etc. are also used in addition to frontal airbags.

The publication KR 100616003 B1 , which represents the closest prior art, discloses a three-point belt which carries an airbag in the diagonal section of the belt so that the airbag is arranged on the upper body of the vehicle occupant during the journey and directly protects the latter.

Description:

It is the object of the present invention to propose a vehicle seat arrangement which increases the level of protection for the vehicle occupants. This object is achieved by a vehicle seat arrangement with the features of claim 1. Preferred or advantageous embodiments of the invention emerge from the subclaims, the following description and the attached figures.

The subject matter of the invention is a vehicle seat arrangement which is suitable and/or designed for a vehicle. The vehicle can be a road vehicle, in particular a passenger car, truck, bus, etc. An optional subject matter of the invention is formed by a vehicle with the vehicle seat arrangement.

The vehicle seat arrangement has a vehicle seat for accommodating a vehicle occupant. The vehicle seat is preferably designed as a driver's seat or as a passenger seat. In particular, the vehicle seat has a seat area and a backrest area with a shoulder section, which are supported by a seat frame. The vehicle seat is in particular slidably attached and/or can be attached to a body of the vehicle.

The vehicle seat arrangement has a first belt device for securing the vehicle occupant. The first belt device comprises a first shoulder belt section. In particular, the first belt device has a first belt strap, wherein the first belt strap is preferably formed by a textile fabric. The first shoulder belt section forms a section of the first belt strap.

The first belt device is designed as a three-point belt and has an upper first connection point and two lower first connection points. The upper first connection point is arranged fixedly to the vehicle. The lower first connection points are in particular an anchoring point and a connection point which is formed by a belt buckle device into which a belt tongue device can be releasably inserted. The two lower first connection points are in particular arranged on both sides of the vehicle seat.

Optionally, the upper first connection point can be formed by a first belt retractor and/or the anchoring point by an end fitting device, optionally with an end fitting tensioner. The end fitting device can be attached, for example, to the body of the vehicle or to the longitudinally displaceable seat rail. Alternatively, the end fitting device can be attached and/or attachable in the area of or to a B-pillar of the vehicle. The first belt retractor is particularly preferably arranged and/or can be arranged on the B-pillar of the vehicle. It can be provided that a height adjustment device for adjusting the belt height is arranged in the course of the first belt strap in front of the first belt retractor.

The vehicle seat arrangement has an airbag section, wherein an airbag is arranged in the airbag section. In particular, the inflated airbag section or airbag is designed at least in sections as a frontal airbag, which secures the vehicle occupant in the direction of travel and/or seat direction. Optionally, the airbag can also have side airbag areas, wherein the side airbag areas secure the vehicle occupant from the side. Optionally, the airbag can also have a head airbag area, wherein the head airbag area protects the vehicle occupant in the area of the head. For example, the airbag is designed as a head-thorax airbag. which optionally has additional side panels.

In an operating state, the airbag section is arranged in the area of the first shoulder belt section in an undeployed and/or uninflated state. The operating state is present in particular when the first belt device is attached to the vehicle occupant. In particular, in the operating state, the airbag section runs diagonally across the upper body of the vehicle occupant and/or in the same direction as the first shoulder belt section of the first belt device.

Within the scope of the invention, it is proposed that the airbag section is attached to the vehicle seat, in particular in a captive manner. The airbag section is particularly preferably attached and/or supported to the shoulder region of the vehicle seat, so that the airbag section in the operating state runs over the shoulder of the vehicle occupant and diagonally across his upper body.

It is a consideration of the invention that in the known prior art an airbag, which is also intended to protect the upper body of the vehicle occupant, is arranged on the seat belt, which is attached to the body of the vehicle together with the airbag. As a result, however, the airbag is a large distance from the vehicle occupant before the seat belt is fastened. When switching to the operating state, the seat belt with the airbag must first be put on in the correct position in order to develop the full protective effect of the airbag. In contrast, the invention proposes that the first belt device is fixed to the vehicle and in particular attached to the body and thus corresponds to a classic three-point belt. The airbag section, on the other hand, is attached to the vehicle seat so that the airbag section is already closer to the vehicle occupant before it is put on and can therefore be put on in the correct position much more easily when transferring from the first belt device to the operating state, since it is already pre-positioned in the correct position by being attached to the vehicle seat. The improved positioning of the airbag section with the airbag in the operating state increases the level of protection for the vehicle occupant.

In a preferred development of the invention, the vehicle seat arrangement has an airbag generator which is designed to inflate the airbag with a gas when the airbag is triggered. A gas connection line is also provided, the gas connection line fluidically connecting the airbag generator to the airbag of the airbag section. In the development, it is proposed that the airbag generator is arranged in the vehicle seat. For example, the airbag generator is arranged in the backrest area, in particular in the shoulder section. The airbag section is particularly preferably attached to the vehicle seat via the gas connection line and/or via the airbag generator. This development ensures that not only is the airbag section with the airbag pre-positioned closer to the vehicle occupant, but the airbag generator is also placed significantly closer, so that the gas connection line can be shorter. The reduced distance and the shortened length of the gas connection line make it mechanically more stable. This also ensures that the gas connection line is not damaged even if the first belt is put on and taken off frequently, thus increasing the level of protection for the vehicle occupant. In addition, available installation space in the vehicle seat can be used.

It is particularly preferred that the vehicle seat has an inlet channel for the gas connection line, wherein the inlet channel is arranged in the shoulder area of the vehicle seat. The gas connection line thus runs from the airbag in the airbag section through the inlet channel to the airbag generator, which is arranged, in particular integrated, in the vehicle seat. The inlet channel is particularly preferably positioned in the shoulder area on the side of the first belt device, in particular the upper first connection point. This development ensures that the gas connection line, the shoulder belt section and the airbag section can be positioned very compactly, in a space-saving manner and thus with little susceptibility to faults.

It is particularly preferred that the airbag section is connected to the first shoulder belt section in a captive manner. In this way, the airbag section is carried along by the first shoulder belt section when the first belt device is put on and thus when it is transferred to the operating state. Consequently, incorrect operation of the airbag section is ruled out.

However, it is particularly preferred that the shoulder belt section is movable relative to the airbag section. In this way, the length of the first shoulder belt section can be individually adjusted without affecting the position of the airbag section, which has its own or independent positioning or positioning option due to its connection to the vehicle seat.

For example, the airbag section is designed as a sleeve, in which the first shoulder belt section. Instead of a sleeve, the airbag section can also have only a limited type of tabs or other fastening elements which securely grip the first shoulder belt section and at the same time enable a relative movement in the belt direction between the airbag section and the first shoulder belt section.

In a possible alternative, it is proposed that the vehicle seat arrangement has a second belt device which is designed to secure the vehicle occupant, in particular to additionally secure the vehicle occupant, and/or as a positioning aid for the airbag section.

The second belt device has a second shoulder belt section. The second shoulder belt section is in particular designed separately from the first shoulder belt section. The second belt device in particular has a second belt strap which is made of a textile fabric and which forms or at least co-forms the second shoulder belt section. The airbag section is arranged on the second shoulder belt section and thus in the operating state in the area of the first shoulder belt section.

By using two belt devices, the functions for protecting the vehicle occupant can be additionally distributed in a focused manner: The first belt device is designed in particular as a high-load subsystem, which implements the protective function of a classic safety belt, in particular a classic three-point safety belt. The second belt device is designed in this alternative to carry the airbag section and preferably as a low-load subsystem, which implements a first, proportional braking of the vehicle occupant.

In the event of an accident, the vehicle occupant is therefore preferably initially braked by the second belt device and in particular protected by the airbag section or the airbag formed from it. Subsequently or almost in parallel, the vehicle occupant is completely braked by the first belt device, although the vehicle occupant has already experienced a certain amount of braking, so that he or she enters the first belt device "pre-braked". By distributing the braking forces between the two belt devices, the vehicle occupant can be braked gradually or in a controlled ramp-like manner, so that negative consequences of an accident can be reduced or even completely eliminated. This effect improves the level of protection for the vehicle occupant in the vehicle through the vehicle seat arrangement.

In one possible embodiment of the invention, the vehicle seat arrangement has a common belt tongue device and a common belt buckle device. The common belt buckle device is, for example, attached or can be attached to the body of the vehicle or via an adapter to the movable seat rail. In particular, the common belt buckle device and/or the common belt tongue device is arranged at the height of the seat area of the vehicle seat. The common belt tongue device forms a common connection point for the first belt device and the second belt device in order to divert braking forces into the vehicle.

It can be provided that the first shoulder belt section is arranged in the sense of a loose bearing and/or looped through the belt tongue device, so that the length of the first shoulder belt section can be easily adjusted during normal driving. It can be provided that the second shoulder belt section is firmly connected to the common belt tongue device in the sense of a fixed bearing and/or can be detachably connected. For example, the common belt tongue device can have a belt buckle section for a belt tongue section of the second shoulder belt section. Alternatively, it is possible for the second shoulder belt section to be slidably fixed in the sense of a loose bearing on the first belt device, in particular on the first belt strap of the first belt device, so that the belt tongue device forms an indirect connection point for the second belt device.

The advantage of the common belt tongue device is that only one connection process has to be carried out when fastening the belt devices, thus preventing only one of the two belt devices from being fastened inadvertently. This prevents incorrect operation of the belt devices, thus further increasing the level of protection for the vehicle occupant.

Particularly preferably, the first and the second shoulder belt sections are designed to run parallel or at least concurrently with one another and alternatively or additionally diagonally across the upper body of the vehicle occupant when the vehicle seat arrangement is in the operating state or protective state with vehicle occupants. In particular, the first shoulder belt section and the second shoulder belt section can, in a plan view against the seat direction and/or against the direction of travel, at least in sections over be arranged overlapping the vehicle occupant.

It is particularly preferred that the first shoulder belt section is arranged in front of the second shoulder belt section in the direction of the seat. Alternatively, the second shoulder belt section is positioned between the vehicle occupant and the first shoulder belt section. This ensures that the vehicle occupant can initially be braked by the second belt device before he or she finally brakes against the first belt device.

In a preferred design embodiment, the second belt device is designed as a two-point belt.

Particularly preferably, the three-point belt and/or the first belt device has, in addition to the common connection point two, the two further, first connection points in order to divert a braking force from the vehicle occupant into the vehicle.

Particularly preferably, the second belt device, designed as a two-point belt, has, in addition to the common connection point, a further connection point than the upper first connection point. The further connection point is preferably formed by a second belt retractor.

The belt retractor provides a mechanism for retracting the respective belt strap, whereby the respective belt strap can be unrolled against a tensile force of the belt retractor so that the respective shoulder belt and/or the respective belt strap fits tightly and/or pre-tensioned against the vehicle occupant.

The upper second connection point of the second belt device is preferably connected to the vehicle seat. In particular, the upper second connection point is arranged in a shoulder area of the vehicle seat, so that the second shoulder belt section runs diagonally from the shoulder area over the upper body of the vehicle occupant to the common connection point at the height of the seat area of the vehicle seat. The first belt device, on the other hand, is preferably arranged further away from the vehicle occupant in the seat direction and/or direction of travel of the vehicle via the connection, in particular of the upper first connection point, to the body of the vehicle. This design has the advantage that the second belt device is arranged closer to the occupant than the first belt device, so that in particular the airbag section is always very close to the vehicle occupant, in particular in contact with it.

In particular, the second belt device and/or the second belt strap is guided through the introduction channel parallel and/or concurrently with the gas connection line into the vehicle seat. The second belt retractor is particularly preferably arranged in the vehicle seat, in particular in the backrest area, especially in the shoulder section of the vehicle seat.

The insertion channel forms in particular an insertion opening in the shoulder area of the vehicle seat, wherein the insertion opening can be realized by a D-ring. In particular, the insertion opening, in particular the D-ring, forms a deflection for the second belt device in relation to the upper second connection point.

The different connections of the belt devices support the second belt device implementing a pre-braking process for the vehicle occupant and the first belt device implementing a main braking process for the vehicle occupant.

The first and/or the second belt device is/are designed in particular to block the respective belt webbing or shoulder belt section when the respective belt webbing, in particular the respective shoulder belt section, is pulled suddenly, so that braking forces can be transmitted from the vehicle occupant to the respective belt webbing and/or the respective shoulder belt section. The first belt device preferably has a first belt force limiting device for limiting a maximum first belt force or restraining force and the second belt device has a second belt force limiting device for limiting a maximum second belt force or restraining force, wherein the maximum first belt force/restraining force is greater than the maximum second belt force/restraining force. When the maximum belt force or restraining force is reached, the belt force limiting devices release the respective belt webbing to a limited extent, so that an impact of the vehicle occupant on the belt webbing is limited. Because the maximum second belt force/restraining force is smaller than the maximum first belt force/restraining force, the vehicle occupant can initially be braked by the second belt device, in particular until the maximum second belt force/restraining force is reached or exceeded, and then finally braked by the second belt device up to the maximum second belt force/restraining force. By selecting the different maximum belt forces and/or restraints forces, the distribution of braking forces is implemented on the second belt device as a low-load subsystem and the first belt device as a high-load subsystem. Secondly, this ensures that the vehicle occupant is gradually braked, so that the level of protection for the vehicle occupant of the vehicle seat arrangement is increased.

It is preferred that the second shoulder belt section is designed to be displaceable relative to the airbag section. This design ensures that the airbag section is always held in a correct, fixed position in relation to the vehicle occupant and, with a view to the comfort of putting on the second shoulder belt section and/or the second belt device, the second shoulder belt section can nevertheless be comfortably adjusted via the second belt retractor.

It is particularly preferred that the arrangement comprising the airbag section and the airbag generator has the gas connection line as a separable connection, wherein the arrangement is designed to release the connection after the airbag has been inflated using a separating device, so that the airbag section and/or the airbag can be carried along when the vehicle occupant moves forward, regardless of its attachment to the vehicle seat, and is not actively held back. For example, the airbag generator and airbag section or airbag can be separated using a pyroelectric separating device, which implements the separation after the airbag has been filled.

• 1 eine schematische Darstellung einer Fahrzeugsitzanordnung in einem Fahrzeug in einem Betriebszustand mit einem Fahrzeuginsassen als ein Ausführungsbeispiel der Erfindung;
• 2 eine schematische Darstellung der Fahrzeugsitzanordnung in der 1 ohne den Fahrzeuginsassen in einem abgeschnallten Zustand;
• 3 eine schematische Darstellung der Fahrzeugsitzanordnung in der 1 in dem Betriebszustand mit zeichnerisch unterdrücktem Fahrzeuginsassen und Fahrzeugsitz;
• 4 eine schematische Darstellung einer Gurtzungeneinrichtung der Fahrzeugsitzanordnung der vorhergehenden Figuren;
• 5 eine schematische Darstellung einer weiteren Fahrzeugsitzanordnung in einem Fahrzeug in einem Betriebszustand mit einem Fahrzeuginsassen als ein weiteres Ausführungsbeispiel der Erfindung;
• 6 eine schematische Darstellung einer weiteren Fahrzeugsitzanordnung in einem Fahrzeug in einem Betriebszustand mit einem Fahrzeuginsassen als ein weiteres Ausführungsbeispiel der Erfindung;
• 7 eine schematische Darstellung der Fahrzeugsitzanordnung in der 6 ohne den Fahrzeuginsassen in einem abgeschnallten Zustand;
• 8 eine schematische Darstellung der Fahrzeugsitzanordnung in der 6 in dem Betriebszustand mit zeichnerisch unterdrücktem Fahrzeuginsassen und Fahrzeugsitz;
• 9 eine schematische Darstellung der Gurtschlosseinrichtung aus den 6, 7, 8;
• 10 eine schematische Darstellung des Kopplungsbereichs der Gurtvorrichtungen der vorhergehenden Figuren;
• 11 eine schematische Darstellung einer weiteren Fahrzeugsitzanordnung in einem Fahrzeug in einem abgeschnallten Zustand als ein weiteres Ausführungsbeispiel der Erfindung;
• 12 eine schematische Darstellung der Fahrzeugsitzanordnung der 11 in einem Fahrzeug in einem Betriebszustand.

Further features, advantages and effects of the invention emerge from the following description of preferred embodiments of the invention. In the following:

• 1 a schematic representation of a vehicle seat arrangement in a vehicle in an operating state with a vehicle occupant as an embodiment of the invention;
• 2 a schematic representation of the vehicle seat arrangement in the 1 without the vehicle occupant being unbuckled;
• 3 a schematic representation of the vehicle seat arrangement in the 1 in the operating state with the vehicle occupant and vehicle seat suppressed in the drawing;
• 4 a schematic representation of a belt tongue device of the vehicle seat arrangement of the preceding figures;
• 5 a schematic representation of another vehicle seat arrangement in a vehicle in an operating state with a vehicle occupant as a further embodiment of the invention;
• 6 a schematic representation of another vehicle seat arrangement in a vehicle in an operating state with a vehicle occupant as a further embodiment of the invention;
• 7 a schematic representation of the vehicle seat arrangement in the 6 without the vehicle occupant being unbuckled;
• 8th a schematic representation of the vehicle seat arrangement in the 6 in the operating state with the vehicle occupant and vehicle seat suppressed in the drawing;
• 9 a schematic representation of the belt buckle device from the 6 , 7 , 8th ;
• 10 a schematic representation of the coupling area of the belt devices of the preceding figures;
• 11 a schematic representation of another vehicle seat arrangement in a vehicle in an unbuckled state as a further embodiment of the invention;
• 12 a schematic representation of the vehicle seat arrangement of the 11 in a vehicle in an operating condition.

Corresponding or identical parts are provided with the same reference numerals in the figures.

The 1 shows a schematic plan view of a vehicle seat arrangement 1 for a vehicle 2 as an embodiment of the invention. The vehicle seat arrangement 1 has a vehicle seat 3 on which in the 1 a vehicle occupant 4 is arranged. The vehicle seat 3 has a backrest area 5 and a seat area 6, which are connected to one another via a seat frame (not shown in more detail). The vehicle seat 3 is arranged in the vehicle 1 so as to be displaceable via seat rails 7. The vehicle seat 3 can be designed, for example, as a driver's seat or as a passenger seat.

The vehicle seat arrangement 1 has a first belt device 8 which secures the vehicle occupant 4 in the vehicle seat 3. The first belt device 8 has a first belt strap 9, wherein the first belt strap 9 comprises a first shoulder belt section 10, wherein the first shoulder belt section 10 runs diagonally from the shoulder of the vehicle occupant 4 to his hip.

The vehicle seat arrangement 1 has a second belt device 11, which also secures the vehicle occupant 4 in the vehicle seat 3. The second belt device 11 has a second belt strap 12, which comprises a second shoulder belt section 13, which runs diagonally across the upper body of the vehicle occupant 4 from his shoulder to his hip.

In the plan view shown, the first shoulder belt section 10 and the second shoulder belt section 13 overlap at least in sections and/or are arranged in the same direction and/or parallel. In the operating state shown, the second shoulder belt section 13 is arranged between the first shoulder belt section 10 and the vehicle occupant 4.

The second belt device 11 has an airbag section 14, wherein the airbag section 14 is arranged on the second shoulder belt section 13. The airbag section 14 has an airbag which can be inflated when triggered in order to protect the vehicle occupant 4. The airbag is particularly designed as a head-thorax airbag, which optionally has side bolsters to protect the vehicle occupant 4.

It can be provided that the airbag is arranged in the inflated state between the second shoulder belt section 13 and the vehicle occupant 4. Alternatively, the airbag is arranged in the inflated state between the second shoulder belt section 13 and the first shoulder belt section 10. It is also possible that the airbag is arranged in the inflated state both between the vehicle occupant 4 and the second shoulder belt section 13 and between the second shoulder belt section 13 and the first shoulder belt section 10.
Further parts or volume areas of the inflated airbag are also located directly in front of the occupant or in front of the first belt device.

To fix the first belt device 8 and the second belt device 11, the vehicle seat arrangement 1 has a common belt buckle device 15 and a common belt tongue device 16. The belt tongue device 16 can be releasably locked in the belt buckle device 15. The belt tongue device 16 and/or the belt buckle device 15 form a common connection point 22 for the first belt device 8 and the second belt device 11 with a body 17 of the vehicle 2.

Looking more closely, the first belt device 8 is designed as a three-point belt, with a lower first connection point as the common connection point 22 being formed by the belt buckle device 15 and/or the belt tongue device 16. A further connection point 18 as an upper first connection point is formed by an end fitting device 30 which is attached to the body 17 of the vehicle 2. In this exemplary embodiment, a pyroelectric belt tensioner, for example, is additionally provided. A further connection point 19 as a further lower first connection point is formed by a first belt retractor 20 with a belt retractor, which is attached in a B-pillar 21 of the body 17, so that the first belt device 8 designed as a three-point belt is attached to the common connection point 22 and the two further connection points 18, 19. The first belt retractor 20 can be located at the height of a shoulder area of the vehicle seat 3. However, it is preferred that a first deflection device 31, such as a D-ring, is provided in the shoulder area of the vehicle seat 3 in the body 17, in particular in the B-pillar 21, wherein a height adjustment device is optionally provided on the deflection and the first belt retractor 20 is arranged further downwards in the body 17, in particular in the B-pillar 21. The first belt device 8 is thus connected at the three connection points 18, 19, 22 to the body 17 of the vehicle 2 directly or indirectly via the seat rails, so that any braking forces which are transmitted to the body 17 via the first belt strap 9 are diverted.

The second belt device 11 is designed as a two-point belt, wherein it has, in addition to the common connection point 22 as a lower second connection point, a further connection point 23, wherein the further connection point 23 is provided by a second belt retractor 24 ( 3 ) which is integrated in the vehicle seat 3. The belt can be guided via a second deflection device 32, such as a D-ring, which is arranged in the upper backrest area 5 and/or in a shoulder section 33 of the backrest area 5 of the vehicle seat 3, wherein a height adjustment device is optionally provided on the deflection. The shoulder section 33 can be formed asymmetrically on only one side of the backrest area 5, wherein the other side of the backrest area 5 is formed shortened in the height direction. The shoulder section 33 is arranged in particular above an area that is used for leaning, so that the shoulder section 33 and in particular the deflection device 32 are not covered by a shoulder of the vehicle occupant 4.

Thus, the second belt device 11 is designed as a two-point belt through the common connection point 22 and the further connection connection point 23 in order to be able to divert any braking forces. However, part of the braking forces are diverted via the further connection point 23 into the vehicle seat 3 and only then indirectly into the body 17.

The different connection of the first belt device 8 and the second belt device 11 ensures that the second shoulder belt section 13 is closer to the body or the occupant of the vehicle occupant 4 than the first shoulder belt section 10 due to the guidance of the first belt strap 9 in the vehicle seat 3. When braking forces are introduced from the vehicle occupant 4 into the belt devices 8, 11, for design reasons the braking force is first introduced into the second belt device 11 and then into the first belt device 8.

It can be provided that the first belt device 8 has a first belt force limiting device 25 and the second belt device 11 has a second belt force limiting device 26 ( 3 ), each of which is designed to limit a maximum belt force and/or restraining force as a counterforce to the braking force for the vehicle occupant 4. It can also be provided that the belt force limiting devices can be set to several, in particular two, stages or a force curve for the maximum belt force or restraining force. The maximum first belt force/restraining force is designed to be greater than the maximum second belt force/restraining force. In this way, the first belt device 8 forms a high-load subsystem and the second belt device 11 forms a low-load subsystem for braking and/or securing the vehicle occupant 4.

In the event of an accident, particularly in the frontal direction, the vehicle occupant 4 is moved in the direction of the seat and/or in the direction of travel of the vehicle 2. The first and second belt devices 8, 11 generate a braking force to brake the vehicle occupant 4 in the opposite direction. The vehicle occupant 4 initially rests primarily or primarily on the second shoulder belt section 13. The accident also inflates the airbag in the airbag section 14, so that the vehicle occupant 4 is additionally protected by the airbag at least in the direction mentioned. Due to the different maximum belt forces/restraint forces, the vehicle occupant 4 is initially braked by the second belt device 11 and the airbag from the airbag section 14. At the same time, the braking force from the first belt device 8 is already acting.

If the maximum second belt force/restraining force is exceeded during the braking of the vehicle occupant 4, the second belt webbing 12 is released or at least slightly slackened by the second belt force limiting device 26, and the first belt device 8 takes over the further braking process either additionally or exclusively.

By means of the gradual braking of the vehicle occupant 4, the occupant can be braked in several phases, first by the belt force/restraining force of the second belt device 11 together with the inflated airbag of the airbag section 14 and then by the first belt device 8, so that the braking process for the vehicle occupant 4 is more moderate. Load management can be set by coordinating the two belt retractors 20, 24 in relation to the maximum belt forces/restraining forces.

Due to the at least central distribution of the braking, it is possible for the second belt device 11 to be supported on the vehicle seat 3 via the further connection point 23, without the vehicle seat 3 having to be designed so stably that the full belt force and/or restraining force must be applied to fully brake the vehicle occupant 4. Rather, pre-braking is carried out for the vehicle occupant 4. In this way, the vehicle seat 3 can be constructed in a conventional, light manner without any problems arising with the dissipation of the braking force. The first belt device 8, on the other hand, is designed as a classic three-point belt, which can absorb and dissipate the remaining braking force through its connection to the vehicle body 17.

The 2 shows the vehicle seat arrangement 1 of the 1 without the vehicle occupant 4 and without the vehicle 2, wherein the belt devices 8, 11 are unbuckled and are located on a door side and/or on the side of the B pillar 21 ( 1 ) of vehicle 2 ( 1 ). Here, the distance in the transverse direction of the vehicle 2 between the further connection point 23 of the second belt device 11 and the deflection to the further connection point 19 can be clearly seen, whereby the integration of the second belt device 11 into the vehicle seat 3 means that the second belt strap 12 and/or the second shoulder belt section 13 sits significantly closer to the vehicle occupant than with the first belt device 8.

In the 3 a schematic representation of the belt devices 8, 11 is shown, wherein the vehicle seat 3, the vehicle 2 and the vehicle occupant 4 are graphically suppressed. From this representation it can be seen that the second belt retractor 24 in the backrest area 5 ( 1 , 2 ) of the vehicle seat 3 ( 1 , 2 ) is arranged. Furthermore, it can be seen from the illustration that the vehicle seat arrangement 1 has an airbag generator 27, wherein the airbag generator 27 is arranged in the upper part of the backrest area 5 ( 1 , 2 ) and/or in the shoulder portion 33 of the vehicle seat 3 ( 1 , 2 ) and is connected to the airbag section 14 via a gas connection line 34.

The vehicle seat 3 has an insertion channel 35 ( 1 , 2 ) which enables insertion of the second belt device 11, in particular the second belt strap 12, and/or the gas connection line 34 into the vehicle seat 3.

When the airbag section 14 is triggered, the airbag in the airbag section 14 is inflated via the airbag generator 27 and the mechanical connection, in particular the gas connection line 34, between the airbag generator 27 and the airbag section 14 is subsequently separated via a pyroelectric separating device 28, for example, so that the airbag of the airbag section 14 is carried along by the vehicle occupant 4 during a forward movement in order to better protect the occupant.

In the operating state and/or non-triggered state, however, the airbag generator 27 is mechanically connected to the airbag section 14 via the gas connection line 34, so that the airbag section 14 assumes a defined position relative to the vehicle seat 3 and thus relative to the vehicle occupant 4. The airbag section 14 can, for example, be designed in the shape of a sleeve, with the second shoulder belt section 13 being slidably guided through the cover of the airbag section 14, or can be arranged in another way so that it can be moved relative to the second shoulder belt section 13, so that the length of the second belt strap 12 and/or the second shoulder belt section 3 can be freely and independently adjustable from the position of the airbag section. The second belt strap 12 can also be surrounded by the airbag package or guided through it in a form-fitting manner. Thus, in the vehicle seat 3, the second belt retractor 24, the airbag generator 27, the separating device 28 and the gas connection line 34 are arranged (in sections) between the airbag generator 27 and the airbag section 14 with the airbag in a concealed manner.

Optionally, the airbag section 14 can be provided with a covering, e.g. made of a textile material, wherein the covering has a tear line or seam or is designed to be torn open, which is torn open when the airbag section 14 is triggered. In this way, the airbag section 14 is protected by the covering when the airbag is not inflated. The airbag and belt strap can have a common cover with a tear-open function (not shown).

Alternatively, the cover can also encompass the airbag section 14, the first shoulder belt section 10 and the second shoulder belt section 13 and in this way form a comfortable package so that the vehicle occupant 4 perceives the two shoulder belt sections 10, 13 as a common shoulder belt.

The 4 shows a detailed section of the belt tongue device 16, wherein it can be seen that the first belt strap 9 is continuously fastened to the belt tongue device 16 in the sense of a loose bearing, so that a length distribution between the first shoulder belt section 10 and a hip belt section 29 can be freely and comfortably adjusted. The second belt strap 12, on the other hand, is either permanently fixed or releasably fixed in the belt tongue device 16 in the sense of a fixed bearing, wherein the second shoulder belt section 13 or the belt strap 12 is releasably inserted into the belt tongue device 16 via a tongue section. It is also possible for the second shoulder belt section 13 and/or the belt strap 12 to be fastened to the first belt strap 9 in the sense of a loose bearing. The second belt retractor 24 of the second belt device 11 ensures appropriate length compensation, as required.

The 5 shows a further embodiment of a vehicle seat arrangement 1, which differs from the seat arrangement 1 in the 1 only differs in that the first belt device 8 rests directly on the vehicle occupant 4 and is thus arranged in front of the second belt device 11 in the direction of travel. For further details, please refer to the previous description.

The 6 shows a further embodiment of the invention, wherein the second belt device 11, in particular the second belt strap 12, does not have the common connection point 22 as the lower second connection point, but rather a connection 36 with the first belt device 8 and/or with the first shoulder belt section 10. The second belt strap 12 is thus fixed to the first belt strap 9. The connection 36, in particular designed as a belt buckle, can be designed as a fixed connection so that the second belt device 11 can protect the vehicle occupant in the event of an impact. Alternatively, however, the connection 36 is designed as a displaceable connection 36 which can be displaced along the first belt device 8 and in particular the first belt strap 9. In this case, the second belt device 11 forms only one position tation aid for the airbag section 14. The connection 35 is arranged in the operating state in a hip region of the vehicle occupant 4.

In the 7 the same embodiment can be seen in an unbuckled state, wherein it can be deduced that through the connection 36 the second belt device 11, in particular the second belt strap 12 with the airbag section 14, is conveniently pulled to the side by the first belt device 8 through the connection 35 in order to simplify the vehicle occupant 4 getting into the driver's seat 3.

In the 8th is in the same representation as in the 3 the embodiment of the 6 and 7 with the driver's seat 3 and vehicle occupants 4 suppressed. As in the 3 Here, too, it can be seen that the airbag generator 27 is arranged in a head region of the vehicle seat 3. The second belt retractor 24, on the other hand, is arranged in the shoulder section 33 or in the upper backrest area 5 of the vehicle seat. In the plan view shown, the gas connection line 34 runs horizontally against the direction of the seat between the introduction channel 36 and the airbag generator 27. The second belt strap 12 is deflected from the second shoulder belt section 13 in the second deflection device 31 formed by the introduction channel 35 and runs perpendicular to the second belt retractor 24.

The 9 shows the belt buckle device 15 with the belt tongue device 16, wherein it can be seen that only the first belt device 8 and/or the first belt strap 9 is attached to the belt tongue device 16.

In the 10 the coupling area around the connection 36 of the belt devices 8, 11 is shown, wherein it can be seen that the second belt strap 12 carries the airbag section 14 and is fixed after the airbag section 14 via the connection 36 to the first belt device 8 and/or to the first belt strap 9.

The 11 and 12 show a particularly simple embodiment of the invention as a further exemplary embodiment. The second belt device 11 is omitted.

The airbag section 14 held on the backrest during normal operation is arranged on the first belt device 8 and in particular on the first belt strap 9 in the first shoulder belt section 10, as was previously described in connection with the second belt device 11. The airbag section 14 can thus be designed, for example, as a sleeve in which the first belt strap 9 enters near the introduction channel or exits at the end and can move accordingly within the airbag section for length compensation.

However, the vehicle seat arrangement 1 has the gas connection line 34, which opens into the introduction channel 35 and is fluidically connected to the airbag generator 27 (not shown in the illustrations) in the same way as previously described.

This reduced embodiment has the advantage that the belt force/restraining force is applied by the first belt device 8 and is diverted into the vehicle 2. Alternatively, the airbag section 14 is arranged on the first belt strap 9 so that it can be easily moved within certain limits in order to be able to follow the occupant during movements or to be able to reduce material stress at the belt entry point. The airbag section 14 is, however, connected to the vehicle seat 3 in particular via the gas connection line 34, so that the airbag section 14 is pre-positioned even without a second belt device 11 and can therefore be positioned in a simplified and thus functionally reliable manner after the first belt device 8 has been put on.

While at least one embodiment has been disclosed in detail above, it should be appreciated that numerous variations of the invention exist. It should also be appreciated that the at least one embodiment is exemplary only and does not represent a limitation on the scope, areas of application, or configuration. Rather, the present disclosure is intended to be a convenient road map for implementing at least one embodiment. Thus, it should be appreciated that various variations in the function or arrangement of the elements of the at least one embodiment may be implemented without departing from the scope provided by the claims and their legal equivalents.

List of reference symbols:

1

Vehicle seating arrangement

2

vehicle

3

Vehicle seat

4

Vehicle occupant

5

Backrest area

6

sitting area

7

Seat rails

8th

first belt device

9

first strap

10

first shoulder strap section

11

second belt device

12

second strap

13

second shoulder strap section

14

Airbag section

15

Seat belt buckle

16

Belt tongue device

17

body

18

additional connection point of the first belt device

19

additional connection point of the first belt device

20

first belt retractor

21

B-pillar

22

common connection point

23

additional connection point of the second belt device

24

second belt retractor

25

first belt force limiting device

26

second belt force limiting device

27

Airbag generator

28

pyroelectric separator

29

Hip belt section

30

End fitting device

31

first deflection device

32

second deflection device

33

Shoulder section

34

Gas connection line

35

Introduction channel

36

Connection

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was 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 accepts no liability for any errors or omissions.

Cited patent literature

• KR 100616003 B1 [0003]

Claims (10)

Vehicle seat arrangement (1) for a vehicle (2) with a vehicle seat (3) for accommodating a vehicle occupant (4), with a first belt device (8) for securing the vehicle occupant (4), wherein the first belt device (8) has a first shoulder belt section (10), wherein the first belt device (8) is designed as a three-point belt with an upper and two lower first connection points, wherein the upper first connection point is arranged fixedly to the vehicle, with an airbag section (14) with an airbag, wherein in an operating state the airbag section (14) is arranged in the region of the first shoulder belt section (10), wherein the airbag section (14) is fastened to the vehicle seat (3). Vehicle seat arrangement (1) according to Claim 1 , characterized by an airbag generator (27) for inflating the airbag with a gas and by a gas connection line (34), wherein the gas connection line (34) fluidically connects the airbag generator (27) to the airbag, wherein the airbag generator (27) is arranged in the vehicle seat (3) and wherein the airbag section (14) is attached to the vehicle seat (3) via the gas connection line (34). Vehicle seat arrangement (1) according to Claim 2 , characterized in that the vehicle seat (3) has an introduction channel (35) for introducing the gas connection line (34) into the vehicle seat (3), wherein the introduction channel (35) is arranged in a shoulder portion (33) of the vehicle seat (3). Vehicle seat arrangement (1) according to one of the preceding claims, characterized in that the airbag section (14) is captively connected to the first shoulder belt section (10), so that the airbag section (10) is carried along by the first shoulder belt section (10) when the first belt device (8) is put on. Vehicle seat arrangement (1) according to one of the preceding claims, characterized in that the first shoulder belt section (10) is movable relative to the airbag section (14). Vehicle seat arrangement (1) according to one of the preceding Claims 1 until 3 , with a second belt device (11), wherein the second belt device (1) has a second shoulder belt section (13), wherein the airbag section (14) is arranged on the second shoulder belt section (13). Vehicle seat arrangement (1) according to Claim 6 , characterized in that the second belt device (11) is designed as a two-point belt with an upper second connection point and a lower second connection point, wherein the upper second connection point is arranged on the vehicle seat (3). Vehicle seat arrangement (1) according to Claim 6 or 7 , characterized in that the lower second connection point is connected to the first shoulder strap portion (10). Vehicle seat arrangement (1) according to one of the preceding Claims 6 or 7 , characterized in that it has a belt buckle device (15), wherein one of the lower first connection points and the lower second connection point form a common connection point (22) in the belt buckle device (15). Vehicle seat arrangement (1) according to one of the preceding Claims 6 until 9 , characterized in that the first belt device (8) has a first belt force limiting device (25) for limiting a maximum first belt force and/or restraining force and the second belt device (11) has a second belt force limiting device (26) for limiting a maximum second belt force and/or restraining force, wherein the maximum first belt force/restraining force is greater than the maximum second belt force/restraining force.

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