Vehicle seat and vehicle seat system for motor vehicles

Abstract

The invention relates to a vehicle seat (10) for a motor vehicle, comprising a backrest (12), a height-adjustable headrest (14) and a belt guide (22) for a seat belt (18) integrated in the vehicle seat (10). The height-adjustable headrest (14) is coupled to the backrest (12). In addition, the headrest (14) can be mechanically coupled to a belt guide adjustment mechanism (36), which mechanically adjusts the belt guide (22) when the height of the headrest (14) is adjusted. A vehicle seat system is also provided.

Description

Technical Field

[0001] The invention relates to a vehicle seat for a motor vehicle and a vehicle seat system for a motor vehicle. Background Art

[0002] Motor vehicles, in particular coupes, are known from the prior art which comprise a vehicle seat with a belt guide, through which a seat belt associated with a B-pillar of the vehicle is guided in order to facilitate manual actuation for the vehicle occupant.

[0003] Furthermore, vehicle seats are known which comprise a backrest, a height-adjustable headrest and a belt guide for a seat belt which is integrated in the vehicle seat. Such vehicle seats are also referred to as belt-integrated seats with a corresponding height-adjustable headrest. In this case, the headrest is usually arranged on side members which are designed separately from the backrest, via which the belt guide and thus the headrest can be adjusted. Such a vehicle seat is described, for example, in DE 196 51 014 C1.

[0004] In the future, such vehicle seats will be used more frequently, for example, in automated or autonomous driving, in which the driver will no longer have to constantly monitor the system or the vehicle. Rather, the vehicle autonomously performs functions such as triggering the flashers, lane changes and lane keeping. This allows the driver to assume a position that is comfortable for him or her within the framework of a predetermined seat adjustment range with any seat adjustment method. In this regard, these seat positions can in particular differ from a predetermined range of standard positions of the vehicle seat (hereinafter referred to as standard positions for simplicity), according to which current occupant protection concepts (such as seat belt systems) are developed. In an automated or autonomously driven vehicle, other vehicle occupants can also occupy such a seat position.

[0005] However, it has proven to be disadvantageous in the above-mentioned vehicle seats that the vehicle seats must be manufactured very sturdily, since the headrest is supported on the side members, wherein the headrest absorbs the forces occurring in an accident, which are then correspondingly dissipated via the side members. Furthermore, the adjustment of the vehicle seat to a comfortable position for the vehicle occupant is very complex, since different parameters of the vehicle seat must be adapted. The comfortable position describes in particular the unfolded position, the rest position or the lying position of the vehicle seat. Summary of the invention

[0006] The object of the present invention is to provide a vehicle seat of simple design, which meets the safety requirements and provides a belt guide which is always optimized for the vehicle occupant. In addition, the object of the present invention is to provide a vehicle seat and / or a vehicle seat system for use which allows simple adjustment of the vehicle seat.

[0007] According to the invention, this object is achieved by a vehicle seat for a motor vehicle, which has a backrest, a height-adjustable headrest and a belt guide for a seat belt integrated in the vehicle seat, wherein the height-adjustable headrest is coupled to the backrest and wherein the headrest can be mechanically coupled to a belt guide adjustment mechanism, which mechanically adjusts the belt guide when the headrest height is adjusted.

[0008] The basic idea of ​​the invention is to mechanically couple the belt guide to the headrest so that a mechanical adjustment of the headrest, in particular a height adjustment of the headrest, leads to a corresponding adjustment of the belt guide. This ensures that the belt guide and thus the belt strap of the seat belt, which rests against the vehicle occupant, is always in an optimal position, in particular in height in the shoulder area of ​​the vehicle occupant. This is because the vehicle occupant usually adapts the headrest of the vehicle seat to his or her body size, thereby also adapting the belt guide accordingly. Since the height-adjustable headrest is directly coupled to the backrest, the vehicle seat can be configured to be correspondingly narrow, since solid side members are not necessary. Furthermore, this makes handling easier for the vehicle occupant and a separate adjustment mechanism for adjusting the height of the belt guide is not necessary. In one embodiment, the headrest and the belt guide adjustment mechanism are preferably permanently coupled to each other mechanically.

[0009] The backrest can have a headrest section on which the headrest is movably arranged. In this regard, it is ensured that the vehicle seat, in particular the headrest and the headrest section of the backrest can absorb the high loads occurring during an accident in a simple manner.

[0010] In one aspect, the headrest is designed without a belt guide. In this respect, the belt strap of the seat belt does not run through the headrest itself, but runs at least laterally past the headrest. This allows a narrow headrest section of the backrest and a correspondingly narrow headrest to be provided in order to ensure belt guidance along the shoulder area of ​​the vehicle occupant.

[0011] A further aspect provides that the belt guide adjustment mechanism has a driver, which has a deflection section for the safety belt, which includes a bearing point for the safety belt. When the height of the headrest is adjusted, the height of the bearing point is mechanically adjusted by the belt guide adjustment mechanism. When the height of the headrest is adjusted, the driver is also adjusted accordingly. In this case, the driver accordingly drives the safety belt in the region of the deflection section, whereby the point of action of the safety belt on the deflection section changes. When the height of the headrest is adjusted, the height of the bearing point changes accordingly in a manner similar to the height of the headrest (in particular relative to the backrest). This ensures that the safety belt is adapted accordingly to the shoulder region of the vehicle occupant due to the height-adjusted deflection section, so that in a restraining situation (for example in the event of an accident) the maximum restraining effect on the vehicle occupant can be achieved by the safety belt of the belt.

[0012] In particular, the reference point of the headrest and the reference point of the deflection section always have a defined distance relative to one another, regardless of the set height of the headrest. This defined distance preferably remains constant, regardless of the set height, so that the height of the headrest is adjusted in the same way as the height of the deflection section, i.e., in accordance with one another. As a result, no (unwanted) relative movements occur between the headrest and the deflection section, since a change in the height of the headrest leads to a change in the position of the deflection section, in particular a corresponding change in the height of the bearing point. This ensures that the belt deflection of the seat belt in the shoulder area of ​​the vehicle occupant is always adapted to the stature of the vehicle occupant. The stature of the vehicle occupant is indirectly detected via the set height of the headrest.

[0013] The height adjustment of the headrest can therefore be regarded as a sensor for adjusting the belt guide, in particular for adjusting the deflection section of the belt guide adjustment.

[0014] According to one embodiment, the headrest has a headrest base element, to which the belt guide and adjustment mechanism is fixedly connected. The headrest base element can be made of metal or plastic, to which a padding is mounted, by which the head of the vehicle occupant is comfortably supported. The headrest base element thus provides an engagement point for the belt guide and adjustment mechanism due to its substantially rigid construction.

[0015] In particular, the headrest base element is coupled to an adjustment guide arranged on the backrest, along which the headrest can be adjusted in a translational manner. The adjustment guide can be a rail or a rail system, along which the headrest, in particular the headrest base element of the headrest, can be adjusted. This ensures that the headrest can be adjusted essentially upward or downward along the longitudinal axis of the backrest. The adjustment guide guides the headrest accordingly during its movement.

[0016] For example, the adjustment guide has a latching area into which the headrest base element latches, so that the headrest can be adjusted step by step. For this purpose, a mechanical height adjustment mechanism can be provided, by which the height of the headrest is adjusted.

[0017] According to one specific embodiment, at least one actuator is provided, which is mechanically coupled to the headrest base element in order to adjust the position of the headrest (in particular steplessly). Thus, an electromechanical height adjustment mechanism for the headrest is provided, which can be operated by the vehicle occupant via corresponding operating elements. The actuator is driven by a control and / or evaluation unit in order to adjust the headrest in the desired manner. The control and / or evaluation unit can be part of the vehicle seat or be designed separately and, for example, integrated in a central control and / or evaluation unit of the motor vehicle.

[0018] The actuator can interact with the headrest base element through a transmission element, thereby converting the rotational movement of the actuator configured as an electric motor into a translational movement of the headrest, especially the headrest base element of the headrest. For this reason, the transmission element can especially have a screw.

[0019] Therefore, vehicle seats comprise a height adjustment mechanism for a headrest, which is designed mechanically and / or electromechanically.

[0020] Preferably, the complete seat belt system is integrated in the vehicle seat, that is to say, the seat belt retractor and / or the seat belt tensioner are also arranged in the vehicle seat. The seat belt tensioner can include a reversible seat belt tensioner and / or an irreversible main tensioner. The functions of the seat belt retractor and the seat belt tensioner are sufficiently known to the person skilled in the art from the prior art. The seat belt retractor and the seat belt tensioner can be respectively driven by a control and / or analysis unit, which also drives the actuator of the height adjustment mechanism. Alternatively, another control and / or analysis unit can be provided, for example a higher-level control and / or analysis unit of the motor vehicle and / or the vehicle occupant protection system.

[0021] According to a further aspect, the vehicle seat comprises an inclination adjustment mechanism for the backrest. It is thus possible that the backrest of the vehicle seat can be adjusted from a standard position into a position other than the standard position, in particular a comfort position. The comfort position is, for example, an unfolded position or a rest position, in which the backrest is adjusted or bent further backwards and / or downwards than in the standard position.

[0022] Furthermore, the backrest can be divided into at least two sections, which can be adjusted relative to one another in order to achieve a vehicle seat position that is as optimal and pleasant as possible for the vehicle occupant. This relative adjustment can be carried out independently of one another or in relation to one another, in particular by means of correspondingly designed coupling devices of the two sections. The two sections of the backrest are connected to one another, for example, by means of a joint unit, so that they can be adjusted relative to one another.

[0023] In general, at least one backrest actuator can be provided, by which the backrest can be adjusted electromechanically, i.e. at least the inclination of the backrest can be adjusted. In addition, the two sections of the backrest can be adjusted relative to each other by the same backrest actuator or another backrest actuator, in order to achieve, for example, an improved vehicle seat geometry for a vehicle occupant.

[0024] Furthermore, a height adjustment mechanism for the headrest can be provided, which is coupled to the inclination adjustment mechanism for the backrest at least in terms of control technology, so that a change in the inclination of the backrest causes a change in the height of the headrest.

[0025] If the vehicle seat is moved from the standard position to another position, in particular the comfort position, the height of the headrest is adjusted simultaneously in addition to the backrest, so that an optimized position for the vehicle occupant can be provided. Since the belt guide is adjusted mechanically (automatically) with the height of the headrest by the belt guide adjustment mechanism, a comfortable position for the vehicle occupant is produced, in which the occupant is optimally secured by the belt. Preferably, the control unit and the evaluation unit include an algorithm, which triggers the height adjustment of the headrest as a function of the adjustment angle of the backrest. The algorithm can be designed in particular so that the coupled adjustment is only carried out starting from a predetermined inclination angle of the backrest. The predetermined inclination angle of the backrest can correspond, for example, to an inclination angle starting from which the inclination of the backrest no longer corresponds to the standard position.

[0026] For example, it is possible for a vehicle occupant to repurpose his vehicle seat in the extreme position of the vehicle seat into a reclining seat, in which, however, the head of the vehicle occupant lies flat on the headrest, in particular the padding, and at the same time the seat belt strap of the seat belt runs closely around the body of the vehicle occupant, in particular his shoulder area.

[0027] In general, a vehicle occupant can adjust the headrest and / or the backrest inclination via an input unit of the motor vehicle, for example, on an operating unit of the motor vehicle, which comprises corresponding operating elements. Depending on the operation of the input unit coupled to the control and / or evaluation unit, the actuator and / or the backrest actuator are controlled in order to implement the desired adjustment. This functionality can be provided by a correspondingly designed vehicle seat system.

[0028] Furthermore, it can be provided that the inclination adjustment mechanism and the height adjustment mechanism are mechanically coupled to one another, so that a change in the inclination of the backrest automatically leads to a corresponding change in the height of the headrest and thus a corresponding change in the height of the belt guide.

[0029] The vehicle seat can include a seat shell having a seat shell turning region of a belt guide. In the initial position, the safety belt is preferably arranged on a seat shell support point in the seat shell turning region. The safety belt is thus guided by the seat shell turning region, which has a corresponding opening for the safety belt, so that the vehicle seat, in particular its seat shell itself, is part of the belt guide.

[0030] The initial position is in particular a position in which the headrest and the belt guide adjustment mechanism coupled to the headrest have a minimum height and are in the lowest position. In this position, the safety belt is therefore arranged not only on the bearing points of the deflection section of the driver but also on the bearing points of the seat shell in the deflection region of the seat shell. If the headrest and the belt guide adjustment mechanism mechanically coupled thereto are adjusted upward, the driver accordingly entrains the safety belt, thereby lifting it from the bearing points of the seat shell, so that the safety belt no longer has to be arranged on the bearing points of the seat shell.

[0031] In another embodiment of the vehicle seat, the mechanical coupling of the height-adjustable headrest and the belt guide adjustment mechanism is implemented in a decoupling manner. In particular, the height-adjustable headrest and the belt guide adjustment mechanism can be adjusted independently of each other into an initial position by the vehicle occupant by basic adjustment, and the mechanical coupling of the height-adjustable headrest and the belt guide adjustment mechanism is not realized until the initial position has been adjusted by the vehicle occupant. By coupling only after the initial position has been adjusted, it is possible, on the one hand, to first adjust the headrest and the belt guide to an optimal or comfortable position relative to each other, and on the other hand, in further use, when the vehicle seat is further adjusted or adjusted by the vehicle occupant, the headrest and the belt guide are coupled in their relative position relative to each other. In order to mechanically decouple the headrest and the belt guide adjustment mechanism in the basic adjustment mode or for basic adjustment, for example, the control and / or evaluation unit can include suitable operating and / or decoupling elements.

[0032] Furthermore, according to the invention, the object is achieved by a vehicle seat system for a motor vehicle, which has a control and / or analysis unit and a vehicle seat of the aforementioned type, wherein the control and / or analysis unit is electrically connected to at least one actuator in order to drive the actuator. Thus, the control and / or analysis unit drives the at least one actuator, by means of which the vehicle seat can be adjusted. In particular, the actuator for the headrest and / or backrest of the vehicle seat is driven by the control and / or analysis unit. The vehicle seat system can be constructed by a vehicle seat that has a correspondingly integrated control and / or analysis unit. Furthermore, the control and / or analysis unit can be constructed separately from the vehicle seat, wherein corresponding lines are provided for signal transmission between the control and / or analysis unit and the vehicle seat.

[0033] Therefore, described at least one actuator can be assigned to the inclination adjustment mechanism and / or the height adjustment mechanism for the headrest.In particular, multiple actuators can be provided, so that the backrest and the headrest can be adjusted, for example, the backrest and the headrest can be adjusted independently of each other by multiple actuators.

[0034] For this purpose, the vehicle occupant can adjust the position of the components of the vehicle seat via a corresponding operating unit, thereby adjusting the backrest and / or the headrest accordingly. Alternatively or additionally, the vehicle occupant of the motor vehicle (in a certain operating mode) can select a predefined adjustment in which the headrest and / or the backrest are adjusted accordingly by outputting a control signal via the control and / or evaluation unit.

[0035] According to a further aspect, at least one sensor is provided, wherein the control and / or evaluation unit is provided to control the at least one actuator as a function of data detected by the sensor.

[0036] Preferably, the sensor or sensors are seat-integrated sensors for determining the position of the vehicle seat. Furthermore, the sensor can be an optical sensor, such as a camera, which detects the position of the vehicle occupant and / or the position of the vehicle seat, in particular the inclination of the vehicle seat. The actuator is then activated as a function of the seat position of the vehicle occupant or the position of the vehicle seat in order to change the height of the head restraint accordingly.

[0037] Furthermore, the at least one sensor can be a position sensor which detects a change in position or a change in posture of the vehicle seat, in particular of the backrest, in order to subsequently actuate the backrest and / or the headrest accordingly.

[0038] A further aspect provides that the control and / or analysis unit is configured to store, process and / or apply a learning model to the data detected by the sensor. It is thereby possible to use at least one digital algorithm in order to carry out a corresponding adjustment of the vehicle seat, which adjustment is dependent on the detected position of the vehicle occupant and / or the vehicle seat. In particular, a corresponding machine learning function can be implemented by the at least one digital algorithm used. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Further advantages and features of the invention emerge from the following description and from the drawings to which reference is made.

[0040] In the attached picture:

[0041] - Figure 1 A front view showing a vehicle seat according to the invention in a first position,

[0042] - Figure 2 Shown in the second position, from Figure 1 Vehicle seats,

[0043] - Figure 3 Show according to Figure 1 A first perspective view of a vehicle seat,

[0044] - Figure 4 Show according to Figure 2 A first perspective view of a vehicle seat,

[0045] - Figure 5 Show according to Figure 1 A second perspective view of a vehicle seat,

[0046] - Figure 6 Show according to Figure 2 a second perspective view of a vehicle seat, and

[0047] - Figure 7 A schematic illustration of a vehicle seat system according to the invention is shown in which the vehicle seat is located in two different positions. DETAILED DESCRIPTION

[0048] exist Figures 1 to 6 1 shows a vehicle seat 10 according to the invention in two different positions in different perspectives. Figure 1 , 3 and 5 are shown in the first position and in Figure 2 , 4 and 6 are shown in a second position, which can also be called the initial position.

[0049] The vehicle seat 10 comprises an adjustable backrest 12 and a height-adjustable headrest 14 which is associated with a headrest section 16 of the backrest 12 .

[0050] Furthermore, the vehicle seat 10 comprises a belt system with a seat belt 18 having a belt strap 20 which is guided via a belt guide 22. The belt guide 22 and the belt system are integrated into the vehicle seat 10, so that in the embodiment shown this is a seat-integrated seat belt 18.

[0051] Furthermore, the vehicle seat 10 comprises a height adjustment mechanism 24 for the headrest 14, by means of which the headrest 14 can be adjusted in height in relation to the headrest section 16 of the backrest 12. Figure 2 , 4 and 6, the headrest 14 is located in the lowest position.

[0052] For this purpose, in the embodiment shown, the height adjustment mechanism 24 comprises an actuator 26, which is coupled to a transmission element 28. The transmission element 28 is arranged between the actuator 26 and the headrest 14. In the embodiment shown, the transmission element is arranged in a headrest base element 30 of the headrest 14, to which a cushion 32 of the headrest 14 is fastened. The headrest base element 30, which is arranged behind the cushion 32 in the figure, is only Figure 1 Implied in.

[0053] Furthermore, the headrest base element 30 is movably guided by an adjustment guide 34 which is arranged on the backrest 12, here on the headrest section 16. The adjustment guide 34 is also part of the height adjustment mechanism 24. The adjustment guide 34 ensures that the headrest 14 can be adjusted in height by its headrest base element 30 in a translational manner, provided that the actuator 26 drives the transmission element 28 accordingly.

[0054] The actuator 26 can be an electric motor, whose rotational movement is converted into a translational movement by the transmission element 28, so that the headrest base element 30 coupled to the transmission element 28 can be correspondingly translationally adjusted along the adjustment guide 34. For this purpose, the transmission element 28 can in particular include a screw and / or a transmission.

[0055] For example, the adjustment guide 34 is designed as a rail or a rail system, by means of which a correspondingly designed headrest base element 30 is held securely on the one hand and can be moved in a guided manner on the other hand.

[0056] Furthermore, the height adjustment device 24 is fixedly coupled to a belt guide adjustment device 36 , by means of which the belt guide device 22 can be adjusted.

[0057] Since the belt guide adjustment mechanism 36 is fixedly coupled to the height adjustment mechanism 24, the belt guide 22 is automatically adjusted mechanically when the height of the headrest 14 is adjusted. For this purpose, the belt guide adjustment mechanism 36 comprises a driver 38, which comprises a deflection section 40 for the seat belt 20. The deflection section 40 therefore has a bearing point 42 or a bearing line for the seat belt 20, via which the seat belt 20 is guided accordingly.

[0058] The driver 38 of the belt guide adjustment mechanism 36 is fixedly connected to the headrest base element 30, so that a height adjustment of the headrest 14 causes a correspondingly similar translational movement of the driver 38, whereby the support point 42 of the seat belt 20 on the deflection section 40 changes in height accordingly. The correspondingly fixed coupling device 43 of the driver 38 on the headrest base element 30 is also only Figure 1 , because it is covered by the padding 32 of the head restraint 14 .

[0059] Therefore, reference points of the headrest 14 , for example the center of the cushion 32 and the deflection section 40 , always have a defined height distance relative to one another, wherein when the height of the headrest 14 is adjusted, this defined distance is independent of the adjusted height of the headrest 14 and remains unchanged accordingly.

[0060] This is due to Figure 1 and 2 , Figure 3 and 4 as well as Figure 5 and 6 The corresponding comparison is intuitively known that in the Figure 1 and 2 , Figure 3 and 4 as well as Figure 5 and 6 , a head restraint 14 of a vehicle seat 10 is shown from three different viewing angles in two different positions, respectively.

[0061] exist Figure 2 , 4 and 6, the headrest of the vehicle seat 10 is shown in the initial state or the lowest position, as shown in the Figure 2 4 and 6 , the vehicle seat 10 comprises a seat shell 44 which defines a seat shell deflection region 46 for the safety belt 20 , ie a region of the belt guide 22 in which the safety belt 20 is deflected by the seat shell 44 .

[0062] The seat shell turning area 46 comprises an opening 47 in the seat shell 44 , through which the safety belt 20 is guided.

[0063] In this case, in the initial position or the lowest position of the headrest 14 of the vehicle seat 10, the safety belt 20 is arranged on a correspondingly designed seat shell support point 48 in addition to the support point 42 arranged on the driver 38, as in the Figure 2 , 4 and 6. Thus, in the initial position of the headrest 14 of the vehicle seat 10, the safety belt 20 is arranged at two different support points 42, 48, which are assigned to the shoulder area of ​​the vehicle occupant.

[0064] Especially by Figure 3 and 4 It is known that the vehicle seat 10 additionally comprises a belt retractor 50 and a belt tensioner 52, by means of which the seat belt 20 is retracted or (pre-)tensioned. In this respect, the vehicle seat 10, despite its compact design, provides corresponding comfort and safety functions that conventional vehicle seats have in combination with a restraint system arranged separately in the vehicle.

[0065] In addition, it has been Figures 3 to 6 It is known that the backrest 12 has, in addition to the headrest section 16, an upper section 54 which is coupled to a lower section 58 via a correspondingly configured joint 56. The backrest 12 itself can thus be adjusted, for example by Figure 7 I learned this and later referred to this Figure 7 .

[0066] Therefore, the vehicle seat 10 includes, in addition to the height adjustment mechanism 24 for the headrest 14 and the belt guide adjustment mechanism 36 (by which the belt guide device 22 and the headrest 14 are evenly adjusted), an inclination adjustment mechanism 60, by which the inclination of the vehicle seat 10, in particular the inclination of the backrest 12, can be adjusted.

[0067] The inclination adjustment mechanism 60 for the backrest 12 can be coupled at least in terms of control technology to the height adjustment mechanism 24 so that the position of the headrest 14 and thus of the belt guide 22 , in particular the bearing point 42 , can be changed depending on the set inclination of the backrest 12 .

[0068] Furthermore, there can be a mechanical coupling of the inclination adjustment mechanism 60 and the height adjustment mechanism 24 , so that as soon as the inclination of the backrest 12 is adjusted by means of the inclination adjustment mechanism 60 , the height adjustment mechanism 24 is automatically actuated.

[0069] exist Figure 71 shows a driving position of the vehicle seat 10 on the left, in which the vehicle seat 10 has essentially an inclination of about 25° relative to the normal N from the vehicle floor. The backrest 12 is thus adjusted by an angle of 25° from its vertical position, wherein the vehicle occupant serves as a reference here. This position corresponds essentially to the standard position of the vehicle seat.

[0070] And in Figure 7 The right side of the figure shows a different other position from the driving position, which is equivalent to a feasible comfortable position. In this position, the backrest 12 is further tilted backwards with respect to the standard position shown, i.e. tilted "+X °".

[0071] In the illustrated illustration, the two sections 54 , 58 of the backrest 12 are also adjusted relative to one another via the joint 56 , so that not only the inclination but also the shape of the backrest 12 is adjusted. In this respect, the inclination adjustment mechanism 60 also comprises a shape adjustment mechanism for the backrest 12 .

[0072] As already explained, the inclination adjustment mechanism 60 is preferably coupled to the height adjustment mechanism 24 in terms of control technology, so that a change in the inclination of the backrest 12 (automatically) causes a change in the height adjustment of the headrest 14. In this regard, the position or height of the headrest 14 relative to the backrest 12 is automatically adapted according to the inclination of the backrest 12 set by the inclination adjustment mechanism 60, such as from Figure 7 This is what I learned. Figure 7 As shown in FIG, the rearward adjustment of the inclination of the backrest 12 causes the headrest 14 to automatically move downward.

[0073] At the same time, the belt guide 22, in particular the bearing point 42, is also automatically adapted accordingly, namely by the driver 38 of the belt guide adjustment mechanism 36, which is mechanically coupled to the headrest 14, such as for Figures 1 to 6 This is what is explained.

[0074] It may be provided that the vehicle seat 10 is part of a vehicle seat system 62 which comprises a control and / or evaluation unit 64 which is integrated in the vehicle seat 10 , for example.

[0075] Alternatively, the control and / or evaluation unit 64 may be designed separately, for example as part of a higher-level vehicle control device, by which the belt retractor 50 and the belt tensioner 52 are also controlled.

[0076] Independently of the arrangement of the control and / or analysis unit 64, the control and / or analysis unit can (individually) drive the height adjustment mechanism 24 of the headrest 14 and / or the inclination adjustment mechanism 60 for the backrest 12, in particular the corresponding actuators of the height adjustment mechanism 24 or the inclination adjustment mechanism 60, which can also be referred to as backrest actuators.

[0077] Furthermore, the control and / or evaluation unit 64 can be electrically coupled to a sensor 66 or to a plurality of sensors 66 in order to appropriately evaluate the data detected by the sensors 66 .

[0078] In the embodiment shown, the sensor 66 is an optical sensor, such as, for example, a camera, which is arranged on the vehicle roof. The sensor 66 detects the position of the vehicle occupant or the position of the vehicle seat 10 .

[0079] When the backrest 12 is adjusted in inclination, the control and / or evaluation unit 64 can correspondingly actuate the height adjustment mechanism 24 based on the position of the vehicle seat 10 detected by the sensor 66, in particular the position of the backrest 12, so as to automatically adjust the headrest 14 to the corresponding position. This ensures that the headrest 14 is always in an optimal position relative to the adjusted position of the backrest 12, in particular in relation to the vehicle occupant.

[0080] Based on the height adjustment of the headrest 14, the belt guide 22 is automatically adapted by the belt guide adjustment mechanism 36 according to the adjusted height of the headrest 14, as in Figure 7 Indicated by the arrows shown.

[0081] Especially by Figure 7 It is found that during the transition from the driving position to the deployed position or rest position, the headrest 14 is moved downwards, wherein the belt guide 22 , in particular the support point 42 for the seat belt 20 , is also displaced downwards in a translation relative to the backrest 12 (same travel distance).

[0082] As an alternative to an optical sensor, the sensor 66 may be arranged on the vehicle seat 10 in order to detect there a correspondingly adjusted position of the vehicle seat 10 .

[0083] Furthermore, the sensor 66 can be part of a control and / or evaluation unit 64 , in order to detect accordingly an operation by a vehicle occupant, wherein the control and / or evaluation unit 64 simultaneously actuates the inclination adjustment device 60 and the height adjustment device 24 .

[0084] In general, the control and / or evaluation unit 64 can be designed to store, process and / or apply a learning model to the data detected by the sensor 66. It is thus possible for the control and / or evaluation unit 64 to automatically recognize and learn which height adjustment is to be set in the headrest 14 and thus in the belt guide 22 when a determined adjustment of the vehicle seat 10 is made by the inclination adjustment mechanism 60.

[0085] Since the belt guide 22 is always adapted to the height of the head restraint 14 , it is ensured that an optimal position of the seat belt 20 is always provided in the shoulder region of the vehicle occupant.

[0086] Since the height adjustment mechanism 24 of the headrest 14 is coupled to the inclination adjustment mechanism 60 , it is also ensured that there is always a comfortable position for the vehicle occupant with respect to the headrest 14 . That is, the position of the headrest 14 is adapted to the correspondingly set inclination of the backrest 12 .

Claims

1. A vehicle seat (10) for a motor vehicle, comprising a backrest (12), a height-adjustable headrest (14) and a belt guide (22) for a seat belt (18) integrated in the vehicle seat (10), wherein: The height-adjustable headrest (14) is coupled to the backrest (12), and the headrest (14) can be mechanically coupled to a belt guide adjustment mechanism (36). When the height of the headrest (14) is adjusted, the belt guide adjustment mechanism mechanically adjusts the belt guide device (22). The height-adjustable headrest (14) and the belt guide adjustment mechanism (36) can be adjusted to an initial position independently of each other by a vehicle occupant through basic adjustment, and after adjustment to the initial position, the height-adjustable headrest (14) and the belt guide adjustment mechanism (36) are coupled, so that in further use, when the vehicle seat (10) is further adjusted, the headrest (14) and the belt guide device (22) are coupled in their relative positions relative to each other.

2. The vehicle seat according to claim 1, characterized in that The headrest (14) is permanently mechanically coupled to the belt guide adjustment mechanism (36).

3. The vehicle seat (10) according to claim 1 or 2, characterized in that The headrest (14) is designed without a seat belt guide.

4. The vehicle seat (10) according to claim 1 or 2, characterized in that The belt guide adjustment device (36) has a driver (38) having a deflection section (40) for the seat belt (20), the deflection section including a bearing point (42) for the seat belt (20).

5. The vehicle seat (10) according to claim 4, characterized in that Regardless of the adjusted height of the headrest (14), a reference point of the headrest (14) and a reference point of the deflection section (40) always have a defined distance from one another.

6. The vehicle seat (10) according to claim 1, characterized in that The headrest (14) has a headrest base element (30), to which the belt guide adjustment mechanism (36) is fixedly connected.

7. The vehicle seat (10) according to claim 6, characterized in that The headrest base element (30) is coupled to an adjustment guide (34) arranged on the backrest (12), and the headrest (14) can be adjusted in a translational manner along the adjustment guide.

8. The vehicle seat (10) according to claim 6 or 7, characterized in that At least one actuator (26) is provided and mechanically coupled to the headrest base member (30) for adjusting the position of the headrest (14).

9. The vehicle seat (10) according to claim 1 or 2, characterized in that A seat belt retractor (50) and / or a seat belt tensioner (52) are integrated into the vehicle seat (10).

10. The vehicle seat (10) according to claim 1 or 2, characterized in that The vehicle seat (10) comprises a reclining mechanism (60) for a backrest (12).

11. The vehicle seat (10) according to claim 10, characterized in that A height adjustment mechanism (24) is provided for a headrest (14), which is coupled to the inclination adjustment mechanism (60) for the backrest (12) at least in terms of control technology, so that a change in the inclination of the backrest (12) causes a change in the height of the headrest (14).

12. The vehicle seat (10) according to claim 4, characterized in that The vehicle seat (10) comprises a seat shell (44) having a seat shell turning region (46) of the belt guide (22).

13. The vehicle seat (10) according to claim 4, characterized in that When the height of the headrest (14) is adjusted, the belt guide adjustment mechanism (36) mechanically adjusts the height of the support point (42).

14. The vehicle seat (10) according to claim 6 or 7, characterized in that At least one actuator (26) is provided, which is mechanically coupled to the headrest base element (30) in order to continuously adjust the position of the headrest (14).

15. The vehicle seat (10) according to claim 12, characterized in that In an initial position, the seat belt (20) is arranged in the seat shell deflection region (46) on a seat shell support point (48).

16. A vehicle seat system (62) for a motor vehicle, comprising a control and / or evaluation unit (64) and a vehicle seat (10) according to any one of claims 1 to 15, wherein: The control and / or evaluation unit (64) is electrically connected to at least one actuator (26) in order to control the actuator.

17. The vehicle seat system (62) of claim 16, characterized in that The at least one actuator (26) is associated with an inclination adjustment mechanism (60) and / or a height adjustment mechanism (24) for a headrest (14).

18. The vehicle seat system (62) according to claim 16 or 17, characterized in that At least one sensor (66) is provided, wherein the control and / or evaluation unit (64) is provided to control the at least one actuator (26) as a function of data detected by the sensor (66).

19. The vehicle seat system (62) of claim 18, characterized in that: The control and / or analysis unit (64) is configured to store, process and / or apply a learning model to the data detected by the sensor (66).

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