DE102019122542A1 - Vehicle seat for commercial vehicle cabins - Google Patents

Abstract

The invention relates to a vehicle seat with an extension along a height axis Z and a width axis Y, comprising a seat part and a backrest element, which extends along a height axis Z 'and in a width axis Y', the backrest element extending along the height axis Z ' Central structure which is arranged centrally along the width axis Y 'and opens into a basic structure extending substantially along the width axis Y', the backrest element having at least one stability element which extends away from the central structure along the width axis Y ', the base structure is arranged pivotably in a holding structure of the vehicle seat, so that the backrest element is pivotable about a first pivot axis, the first pivot axis being spaced apart from the seat part along a height axis Z of the vehicle seat.

Description

The invention relates to a vehicle seat with an extension along a height axis Z and a width axis Y, comprising a seat part and a backrest element which extends along a height axis Z 'and in a width axis Y'.

Vehicle seats with backrest elements are well known from the prior art. In commercial vehicle cabins, it is often desirable that their interior can be used in a wide variety of ways, for example for the provision of a sleeping place or a cooking place. Often, however, the available interior space is limited in commercial vehicle cabins that are built as standard. The vehicle seats, in particular the passenger seat, should therefore be stowable or collapsible to save space.

In the case of commercial vehicles, it can be assumed that the people have to stay in the vehicle seats for long periods. It is therefore desirable that the vehicle seats avoid incorrect posture and ensure maximum comfort.

In addition, it is desirable that the vehicle seats have as little weight as possible in order to reduce the weight of the commercial vehicle. Likewise, the vehicle seats should be able to be manufactured as cheaply as possible without impairing the stability and safety requirements.

The object of the present invention is therefore to provide a vehicle seat which solves the problems described at the outset.

The tasks are solved by a vehicle seat according to claim 1. Further preferred embodiments are described in the subclaims.

The vehicle seat according to the invention with an extension along a height axis Z and a width axis Y comprises a seat part and a backrest element which extends along a height axis Z 'and in a width axis Y'. The backrest element has a central structure which extends along the height direction Z1, which is arranged centrally along the width axis Y 'and opens into a basic structure which extends essentially along the width axis Y', the backrest element having at least one stability element which extends along the Width axis Y 'extends away from the central structure, the base structure being pivotably arranged in a holding structure of the vehicle site, so that the backrest element can be pivoted about a first pivot axis, the first pivot axis being spaced apart from the seat part along a height axis Z of the vehicle seat.

The vehicle seat according to the invention can be provided as a driver's seat or as a passenger seat.

The vehicle seat thus extends along a height axis Z, a width axis Y and a depth axis X. The respective axes are each assigned two directions. The height axis Z thus includes the directions Z1 (upwards) and Z2 (downwards). The latitude axis Y includes the directions Y1 (to the right) and Y2 (to the left). The depth axis X includes the directions X1 (forwards) and X2 (forwards).

The backrest element extends along a height axis Z ', a width axis Y' and a depth axis X '. Two directions can also be assigned to these respective axes. The height axis Z 'thus includes the directions Z'1 (upwards) and Z'2 (downwards). The latitude axis Y 'includes the directions Y'1 (to the right) and Y'2 (to the left). The depth axis X 'includes the directions X'1 (forward) and X'2 (rearward).

The expression "essentially" should be interpreted to mean that even slight tolerance deviations are also claimed. The deviation can thus be an angle of preferably less than 10 °, more preferably less than 7.5 °, even more preferably less than 5 °. This also applies to the terms “essentially” used in the following.

In a preferred initial state, the axes Z, Y, X of the vehicle seat, or the assigned directions would be parallel to the axes Z ', Y', X 'of the backrest element, or the corresponding assigned directions. With a pivoting according to the invention about the first pivot axis, the height axis of the vehicle seat and the height axis of the backrest element would form an angle α include which is preferably greater than 0 ° and is preferably less than ± 90 °. The angle α would be in the interval] 0 °, ± 90 °]. Likewise, the depth axes X and X 'would enclose a corresponding angle.

A stability element is to be understood as elements which serve to support / stabilize the person in the seat. Such stability elements can be, for example, struts, strut elements or plate-like elements. The stability elements can preferably be provided to support certain body regions. So can for example, a support of the lower back, or the lumbar region, the upper back, or the shoulder area and the head can be provided. The stability elements extend away from the central structure or longitudinal structure. This central structure can advantageously absorb the forces acting on the stability elements and introduce them into the base structure, since this force-absorbing central structure is based on the base structure. The base structure is firmly connected to the force-absorbing central structure, or is formed integrally therewith. “Integrally formed” means that the two elements are made in one piece or in one piece. A firm connection of the base structure to the central structure can be made, for example, by a fixation, for example by a screw connection, a plug connection, a rivet connection or a welded connection.

The first pivot axis advantageously runs at least in sections through the base structure and the holding structure. According to the invention, the centrally arranged rear central structure is supported on the underside on a pivot axis which is preferably oriented horizontally or along the width axis Y of the vehicle seat or on the basis of the horizontal or width axis Y. In this way, this rear central structure / longitudinal structure and the pivot axis are suitable for pivoting the backrest forwards and backwards, it being crucial that this pivot axis increases in relation to the seat part in the holding structure which extends from the seat part in its rear upwards extends, is arranged.

According to the invention, the first pivot axis is spaced from the seat part in a height direction Z of the vehicle seat. The pivot axis preferably runs at least in sections through the base structure. Accordingly, it is also preferred that the base structure is spaced from the seat part.

The distance between the pivot axis and the seat part is advantageously dimensioned such that the pivot axis is located in the region of the lumbar spine.

The seat part advantageously comprises a cushion element on which the person sits. Furthermore, the seat part can comprise a corresponding receiving element, which receives or holds the cushion element. It is also advantageous if the backrest element is provided with at least one cushion element. The at least one cushion element is preferably held by the at least one stability element. The backrest element and the at least one cushion element therefore advantageously form the backrest of the vehicle seat. Of course, it would also be conceivable that a cushion element is not provided on the seat part or on the backrest element. Accordingly, only a seat surface or a support surface would be provided, which contact the user.

The preferred cushion elements on the backrest element protrude forward along the depth direction X'1. Accordingly, it is preferred that a first distance between the pivot axis and the seat part corresponds to at least a second distance, which exists between the cushion surface in a lower third of the back surface and the pivot axis. The first distance is from the surface of the seat part, which is in contact with the user, which is advantageously the surface of the corresponding cushion element. Such a configuration of the first distance makes it possible to pivot the backrest or the backrest element forwards by -90 °. The central structure would then be arranged essentially parallel to the seat part. Likewise, the height axis Z 'of the backrest element would be arranged essentially parallel to the depth axis of the vehicle seat. The expression “essentially” means a small tolerance deviation. Such a deviation from the parallelism of the elements or axes mentioned can be in a range from 0 ° to 10 °, preferably in a range between 0 ° and 7.5 °, more preferably in a range from 0 ° to 5 °. Due to the backrest element arranged essentially parallel to the seat part, the vehicle seat can be stowed in a particularly space-saving manner.

An advantageous passenger vehicle seat, or driver's seat, can therefore be stowed in the rear area of the commercial vehicle cabin in the folded-down state to save space. As a result, an increased space requirement in the front area of the commercial vehicle cabin, for example for the construction of a table for taking a meal, can be made available.

Such an advantageous passenger or driver's seat can be changed such that the entire backrest element can be folded down to the seat part, so that a rear side of the backrest element is arranged almost horizontally. This vehicle seat can then preferably be moved backwards when folded. For this purpose, a guide system can advantageously be provided. This guide system can advantageously comprise rails embedded in the body floor or rails attached. It is advantageous that the Seat on its underside has complementarily formed rail elements or roller elements or sliding blocks or the like to allow displacement in the forward and backward direction of the vehicle seat.

Advantageously, the vehicle seat can be locked in the opened state, that is to say when it is arranged in the front region of the commercial vehicle cabin in its regular driving state, by means of a locking device in order to ensure driving safety for the person. This locking device can be operated, for example, by means of a lever element or a Bowden cable.

The vehicle seat can preferably also be locked in the folded state if it is arranged to the rear in the rear area of the commercial vehicle cabin below a sleeping bed or the like. This can be done by means of the locking device or by means of additional latching elements.

The first distance between the pivot axis and the seat part is advantageously in a range between 2 cm and 30 cm, more preferably the first distance is in a range between 5 cm and 25 cm. The first distance is even more preferably in a range between 5 cm and 15 cm.

The pivot axis preferably extends in the horizontal direction behind the backrest element 4th arranged and at the same time holds the entire backrest element. The backrest element is preferably arranged separately from the seat part.

The holding structure of the backrest element or also called the backrest construction is advantageously a receiving frame. According to a preferred embodiment, the holding structure has two holding legs or U-legs extending along the height axis Z of the vehicle seat. The holding legs on the seat part are advantageously arranged on an outer edge of the seat part along the width axis Y of the vehicle seat.

The holding structure is advantageously U-shaped. The holding structure preferably has a cross strut which extends along the width axis Y and which connects the two holding legs. The cross strut of the U-shaped holding structure is advantageously integrated in the seat part or a section of the seat part.

The seat part advantageously comprises a receiving element for the cushion element or the seat surface. This receiving element can be manufactured in such a way that it has a corresponding stability, which is sufficient for a corresponding force input through the holding legs. It would thus be conceivable for the holding structure to consist of the holding legs and a section of the seat part, or the receiving element for the cushion element or the seat surface, preferably a section which extends along the width direction Y. However, it would also be conceivable for the cross strut to be arranged in or on the seat part. This is particularly advantageous if the seat part or the seat for the cushion element is not designed sufficiently for the force input through the holding elements. The cross strut could advantageously be connected to a seat substructure, by means of which the seat is connected to the vehicle body.

The holding structure can therefore preferably be formed in one part or in several parts.

According to a further preferred embodiment, the backrest element comprises a lower part which is arranged along the height axis Z 'below the first pivot axis and an upper part which is arranged along the height axis Z' above the first pivot axis. Since the first pivot axis increases, ie extends at a certain distance from the seat part, the backrest element or the rear central structure with the at least one stability element can pivot forwards and backwards. When the upper part of the backrest element lying above the first pivot axis is pivoted backwards, that is to say in the direction X2, the lower part of the backrest element lying below the first pivot axis is simultaneously pivoted to the front, that is to say along the direction X1. In this way, advantageous lordosis / kyphosis support can be brought about.

According to a further preferred embodiment, the base structure is dimensionally stable. This enables the introduction of forces through the central structure and ensures appropriate stability. The base structure can be arched, so that the base structure has an extension to the rear, that is to say along the depth direction X'2. The base structure is preferably formed integrally, ie in one piece and / or in one piece with the central structure. The base structure preferably has, on its outer edges along the width axis Y 'of the backrest element, a bearing shaft element which is rotatably or pivotably arranged in a pivot bearing of a holding leg. It would be conceivable that a bearing shaft element through the entire width of the base structure Basic structure runs and is arranged in the pivot bearings of the two holding legs. However, it would also be possible for a receptacle to be provided on the respective edges of the base structure, in each of which a bearing shaft element is fixedly arranged. The respective bearing shaft element is then mounted in the corresponding pivot bearing of the holding arm. The pivot bearing on the respective holding leg advantageously includes a receptacle for the respective bearing shaft element or for the respective end of the continuous bearing shaft element. This receptacle is preferably designed such that smooth rotation of the bearing shaft element is made possible. This can be made possible, for example, by a ball bearing.

According to a preferred embodiment, the pivot bearing of the holding legs can be adjusted along the height direction Z. As a result, the distance between the first pivot axis and the seat part can be adjustable. The lordosis / kyphosis support could thus be adapted to the user.

According to a further preferred embodiment, the vehicle seat comprises a locking mechanism, by means of which the pivoting of the backrest element can be locked about the first pivot axis. A desired inclination of the backrest element can be determined by the provision of a locking mechanism. Such a locking mechanism can, for example, comprise a releasable toothing of a locking element in a tooth element. The tooth element advantageously has a section in the form of a segment of a circle and the locking element is acted upon by a spring force. The toothing can be released using an operating element. Such an operating element could be a lever element, an actuator or a Bowden cable. The locking mechanism could advantageously be provided on the pivot bearing of the bearing shaft element or be integrated therein.

According to a further preferred embodiment, the vehicle seat comprises a reset mechanism, by means of which a pivoting of the backrest element about the first pivot axis can be reset towards a starting position. This starting position could preferably be the position in which the backrest element is oriented essentially perpendicular to the seat part. The reset mechanism can comprise, for example, an elastic element or a torsion spring. The reset mechanism could advantageously be provided on the pivot bearing of the bearing shaft element or be integrated therein.

According to a further preferred embodiment, the backrest element comprises a stability element in the form of a first plate-like element. The first plate-like element is preferably arranged along the height axis Z ′ in a lower region of the central structure. The first plate-like element preferably extends along the height axis Z 'of the backrest element beyond the pivot axis in the direction of the seat part. The first plate-like element preferably extends along the height axis Z 'of the backrest element beyond the base structure in the direction of the seat part. The lower part of the backrest element is advantageously the lower section of the first plate-like element which projects beyond the pivot axis. The preferred extent of the first plate-like element is not insignificant. The first plate-like element advantageously extends at least two thirds of the distance between the pivot axis and the seat part or the seat part surface. More preferably, the first plate-like element extends at least three quarters of the distance between the pivot axis and the seat part or the seat part surface. Advantageously, the cushion element arranged on the backrest element contacts the cushion element of the seat part.

According to a further advantageous embodiment, the first plate-like element is arranged pivotably on the central structure and / or is at least partially flexible. This advantageously enables pivoting and / or deformation of the first plate-like element in the radial direction about a second pivot axis. The second pivot axis preferably extends essentially along the height axis Z '. The expression "essentially" should be interpreted to mean that even slight tolerance deviations are also claimed. The deviation can thus be an angle of preferably less than 10 °, more preferably less than 7.5 °, even more preferably less than 5 °. The second pivot axis preferably runs parallel to the height axis Z '. A pivoting of the first plate-like element can be made possible by providing a joint element or an elastically deformable element, by means of which the first plate-like element is fastened to the central structure. Cumulatively or alternatively, the first plate-like element can be flexibly equipped, at least in sections, so that the first plate-like element can be twisted or twisted about the second pivot axis. The pivoting and / or the deformation makes it possible for the first plate-like element in contact with the user to follow this rotary movement when the user rotates. The lower back stays through the rotational movement of the user continues to be supported, thereby avoiding incorrect posture of the user and increasing seating comfort.

According to a further preferred embodiment, the central structure has at least one support element which extends along the height axis Z '. This support element is preferably connected to the base structure on the underside. The central structure advantageously has two support elements which extend along the height axis Z ′ and are connected to the base structure on the underside. It is advantageous that the support elements are spaced along the width axis Y '. As a result, an optimal input of force into the basic structure can take place and an optimal stability of the central structure is guaranteed. Furthermore, a central section of the base structure can preferably be of reinforced design in order to ensure sufficient stability for a corresponding introduction of force.

The backrest element advantageously has two stability elements, which are designed in the form of rib elements. The rib elements are advantageously arranged along the height axis Z 'above the first plate-like element. The rib elements preferably each have an extension along the width axis Y '. A first rib element preferably extends in the opposite direction to the second rib element. Accordingly, the first rib element would have an extent to the left along the width direction Y'2 and the second rib element would have an extent to the right along the width direction Y'1. These stability elements in the form of rib elements advantageously serve to support the shoulder area of the user. The rib elements are advantageously P-shaped. It is further preferred if the rib elements also extend forwards, that is to say along the depth direction X'1. This results in better seating comfort.

The rib elements are preferably arranged on the central structure or are formed integrally therewith. Advantageously, one rib element is arranged on a support element or one rib element is integrally formed with a support element. Integrally formed means a one-piece design of the rib elements and the support elements. A rib element can be arranged on a support element, for example, by a fixation, for example by a screw connection, a plug connection, a rivet connection or a welded connection.

According to a further advantageous embodiment, the rib elements are arranged pivotably on the central structure and / or are at least partially flexible. This advantageously enables pivoting and / or deformation of the rib elements in the radial direction about a third pivot axis. The third pivot axis preferably extends essentially along the height axis Z '. The expression "essentially" should be interpreted to mean that even slight tolerance deviations are also claimed. The deviation can thus be an angle of preferably less than 10 °, more preferably less than 7.5 °, even more preferably less than 5 °. The third pivot axis preferably runs parallel to the height axis Z '. A pivoting of the rib elements can be made possible by providing a joint element or an elastically deformable element, by means of which the rib elements are fastened to the central structure. Cumulatively or alternatively, the rib elements can be flexibly equipped, at least in sections, so that the rib elements can be twisted or twisted about the third pivot axis. As a result of the pivoting and / or the deformation, it is possible that, when the user rotates, the rib elements resting on the user can at least partially follow this rotating movement. The shoulder area thus remains supported by the rotational movement of the user, thereby avoiding incorrect posture by the user and increasing seating comfort. It is advantageous that the pivoting and / or deformation of the rib elements is independent of a pivoting and / or deformation of the first plate-like element.

According to a further advantageous embodiment, a headrest part is arranged on the central structure. The headrest part is preferably arranged along the height axis Z 'above the rib elements. The headrest part is preferably arranged on the central structure by means of a first arm element. The first arm element is preferably arranged between the support elements along the height axis Z '.

According to a further preferred embodiment, the headrest part has a second plate-like element. Such a second plate-like element serves to support the head. This second plate-like element can also be designed as a shell element.

According to a further preferred embodiment, the headrest part can be displaced along the height axis Z '. A guide device is preferably provided on the first arm element, in which a second arm element is guided along the height axis Z '. A predetermined height position of the second arm element can preferably be determined by a locking device. The second plate-like element, on which a cushion element can preferably be arranged, is advantageously arranged on the second arm element. The height of the headrest part can accordingly be adjusted by displacing the second plate-like element and the second arm element relative to the first arm element or the central structure. It is advantageous if the first arm element is firmly fixed to the central structure. The first arm element is advantageously fixed between the support elements.

According to a further embodiment, a displacement of the headrest part along the height axis Z 'could also be realized by a displacement of the first arm element along the height axis Z' relative to the central structure or the support elements. It is advantageous if each support element has a rail structure on the side facing the arm element, in which the arm element can be guided.

According to a further preferred embodiment, the vehicle seat comprises a locking mechanism by means of which the displacement of the headrest part can be locked relative to the central structure. By providing a locking mechanism, a desired height of the headrest part can be set. Such a locking mechanism can, for example, comprise a releasable toothing of a bolt in a tooth element.

According to a further preferred embodiment, the vehicle seat comprises a reset mechanism by means of which the displacement of the headrest part relative to the central structure can be reset to a starting position. The reset mechanism can comprise, for example, an elastic element or a spring element.

The displacement of the first arm element can take place cumulatively or alternatively to the displacement of the second arm element relative to the second arm element.

According to a further preferred embodiment, at least one guide pin is provided on the second arm element. The guide pin is preferably guided in the guide device. The guide device is advantageously U-shaped and has a guide groove or a guide rail on the two U-legs extending along the depth direction X ', in or on which a guide pin is guided in each case. The locking device preferably has a predetermined number of projections which are complementary to a recess or groove provided on the guide pin. In a locking position, a spring device advantageously presses a projection into the recess of the guide pin. As a result, the second arm element and thus also the second plate-like element is held at a certain height position. The user can apply a corresponding force along the height axis Z ′ around the height position, as a result of which the press connection between the recess of the guide pin and the projection, which is forced by the spring device, is released. The guide pin can then be displaced to a further projection which is below or above the original projection. Again, the respective projection can be received in the recess of the guide pin, the spring device in turn providing a corresponding press connection between the recess and the now selected projection. This configuration makes it easy to adjust the height position of the headrest part.

According to a further preferred embodiment, the guide device comprises an end receptacle for the at least one guide pin, in which a rotation of the guide pin and the second arm element about a pivot axis S is made possible. It is advantageous if the swivel axis S extends along the width axis Y '. It is also advantageous that the end receptacle is located at an upper end of the guide groove or the guide rails. The second plate-like element can preferably be pivoted forwards along the depth axis X 'by pivoting the second arm element.

The vehicle seat can thus be brought into a stowed position in which, on the one hand, the backrest element has been displaced essentially parallel to the seat part, or parallel to the depth axis X of the vehicle seat. Furthermore, in this position the headrest part can be pivoted in such a way that it extends essentially parallel to the depth axis X '. In the reference system of the entire vehicle seat, the headrest would then extend essentially along the height axis Z '. As a result, the vehicle seat can be folded up to save space and, if necessary, stowed away.

According to a further advantageous embodiment, the second plate-like element is arranged on the first or second arm element by means of an articulated element. The second plate-like element is preferably pivotable about a fourth pivot axis, which runs essentially along the height axis Z ′. The plate-like element is preferably pivotable about a fifth pivot axis, which runs essentially along the width axis Y '. This configuration allows the head to be optimally supported. Advantageously, the pivoting of the headrest part is independent of the pivoting and / or deformation of the first plate-like element and the pivoting and / or deformation of the rib elements.

According to a further preferred embodiment, the vehicle seat comprises a substructure, by means of which it is arranged on the body of the vehicle. The substructure is preferably connected to the seat part and optionally to the backrest element. The substructure can comprise a damping and / or suspension device for damping and or suspension of vertical vibrations or deflections. Furthermore, the substructure can comprise a damping and / or suspension device for damping and or suspension of horizontal vibrations or deflections.

According to a further preferred embodiment, the backrest element is at least partially made of an aluminum alloy. Adequate stability and weight reduction can be achieved by using this material.

The object is also achieved by a commercial vehicle cabin with a vehicle seat according to one of the preceding embodiments. The vehicle seat is displaceably arranged in the commercial vehicle cabin by means of a guide system.

The commercial vehicle cabin can be equipped with all of the features already described above in the context of the vehicle seat, individually or in combination, and vice versa.

• 1 eine isometrische Ansicht des Fahrzeugsitzes nach einer Ausführungsform;
• 2 eine Rückansicht des Rückenlehnenelementes nach einer Ausführungsform;
• 3 eine Rückansicht des Rückenlehnenelementes nach einer Ausführungsform;
• 4 eine Seitenansicht des Fahrzeugsitzes nach einer Ausführungsform;
• 5 eine Draufsicht von oben des Rückenlehnenelementes nach einer Ausführungsform;
• 6 eine Draufsicht von unten des Rückenlehnenelementes nach einer Ausführungsform;
• 7 eine Rückansicht des Kopfstützenteils nach einer Ausführungsform;
• 7a eine Schnittansicht eines Abschnitts des Kopfstützenteils nach einer Ausführungsform;
• 8 eine Schnittansicht eines Abschnitts des Kopfstützenteils nach einer Ausführungsform;
• 9 eine Seitenansicht eines Abschnitts des Kopfstützenteils nach einer Ausführungsform;
• 10 eine Seitenansicht eines Abschnitts des Kopfstützenteils nach einer Ausführungsform;
• 11 eine Seitenansicht eines Abschnitts des Kopfstützenteils nach einer Ausführungsform;
• 12 eine Explosionsdarstellung des Kopfstützenteils und eines Abschnitts des Rückenlehnenelementes nach einer Ausführungsform;
• 13 eine isometrische Ansicht des Fahrzeugsitzes nach einer Ausführungsform;
• 14 eine Explosionsdarstellung des Fahrzeugsitzes nach einer Ausführungsform;
• 15 eine Feststelleinrichtung zur Einstellung der Neigung des Rückenlehnenelementes nach einer Ausführungsform;
• 16 eine Feststelleinrichtung zur Einstellung der Neigung des Rückenlehnenelementes nach einer Ausführungsform;
• 17 eine Feststelleinrichtung zur Einstellung der Neigung des Rückenlehnenelementes nach einer Ausführungsform;
• 18 eine Seitenansicht des Fahrzeugsitzes nach einer Ausführungsform mit verschiedenen Neigungsposition der Rückenlehne;
• 19 Ansicht einer Nutzfahrzeugkabine mit einem Fahrzeugsitz nach einer Ausführungsform;
• 20 Ansicht einer Nutzfahrzeugkabine mit einem Fahrzeugsitz nach einer Ausführungsform;
• 21 Ansicht eines Fahrzeugsitzes nach einer Ausführungsform;
• 22 Ansicht eines Führungssystems für einen Fahrzeugsitz nach einer Ausführungsform;
• 23 Ansicht eines Führungssystems für einen Fahrzeugsitz nach einer Ausführungsform;
• 24 Ansicht einer Nutzfahrzeugkabine mit einem Fahrzeugsitz nach einer Ausführungsform;
• 25 Ansicht einer Nutzfahrzeugkabine mit einem Fahrzeugsitz nach einer Ausführungsform;
• 26 Ansicht einer Nutzfahrzeugkabine mit einem Fahrzeugsitz nach einer Ausführungsform;
• 27a,b Ansichten eines Führungssystems für einen Fahrzeugsitz nach einer Ausführungsform;
• 28 Ansicht eines Fahrzeugsitzes nach einer Ausführungsform von oben;
• 29 Ansicht eines Fahrzeugsitzes nach einer Ausführungsform von unten.

Further advantages, aims and properties of the present invention are explained on the basis of the following description of the attached figures. Components of the same type can have the same reference symbols in the various embodiments.
The figures show:

• 1 an isometric view of the vehicle seat according to an embodiment;
• 2nd a rear view of the backrest element according to an embodiment;
• 3rd a rear view of the backrest element according to an embodiment;
• 4th a side view of the vehicle seat according to an embodiment;
• 5 a top view of the backrest element according to one embodiment;
• 6 a plan view from below of the backrest element according to one embodiment;
• 7 a rear view of the headrest part according to an embodiment;
• 7a a sectional view of a portion of the headrest part according to an embodiment;
• 8th a sectional view of a portion of the headrest part according to an embodiment;
• 9 a side view of a portion of the headrest part according to an embodiment;
• 10th a side view of a portion of the headrest part according to an embodiment;
• 11 a side view of a portion of the headrest part according to an embodiment;
• 12th an exploded view of the headrest part and a portion of the backrest element according to an embodiment;
• 13 an isometric view of the vehicle seat according to an embodiment;
• 14 an exploded view of the vehicle seat according to an embodiment;
• 15 a locking device for adjusting the inclination of the backrest element according to one embodiment;
• 16 a locking device for adjusting the inclination of the backrest element according to one embodiment;
• 17th a locking device for adjusting the inclination of the backrest element according to one embodiment;
• 18th a side view of the vehicle seat according to an embodiment with different inclination position of the backrest;
• 19th View of a commercial vehicle cabin with a vehicle seat according to an embodiment;
• 20th View of a commercial vehicle cabin with a vehicle seat according to an embodiment;
• 21 View of a vehicle seat according to an embodiment;
• 22 View of a guidance system for a vehicle seat according to an embodiment;
• 23 View of a guidance system for a vehicle seat according to an embodiment;
• 24th View of a commercial vehicle cabin with a vehicle seat according to an embodiment;
• 25th View of a commercial vehicle cabin with a vehicle seat according to an embodiment;
• 26 View of a commercial vehicle cabin with a vehicle seat according to an embodiment;
• 27a, b Views of a guidance system for a vehicle seat according to an embodiment;
• 28 View of a vehicle seat according to one embodiment from above;
• 29 View of a vehicle seat according to one embodiment from below.

In the 1 to 29 is a vehicle seat 100 , or a backrest element 4th shown. The vehicle seat 100 with an extension along a height axis Z. and a latitude axis Y , includes a seat part 5 and a backrest element 4th , which extends along a height axis Z 'and in a width axis Y', the backrest element 4th a central structure extending along the height axis Z ' 1 , 1a , 1b which is arranged centrally along the width axis Y 'and in a basic structure which extends essentially along the width axis Y' 2nd opens out, the backrest element 4th at least one stability element 8th which is along the width axis Y 'from the central structure 1 , 1a , 1b stretched out, the basic structure 2nd in a holding structure 6 of the vehicle site 100 is pivotally arranged so that the backrest element 4th about a first pivot axis 3rd is pivotable, the first pivot axis 3rd along a height axis Z of the vehicle seat from the seat part 5 is spaced.

The vehicle seat 100 thus extends along a height axis Z of a width axis Y and a depth axis X. Two directions are to be assigned to the respective axes. The height axis Z thus includes the directions Z1 (upwards) and Z2 (downwards). The latitude axis Y includes the directions Y1 (to the right) and Y2 (to the left). The depth axis X includes the directions X1 (forwards) and X2 (forwards).

The backrest element 4th extends along a height axis Z ', a width axis Y' and a depth axis X '. Two directions can also be assigned to these respective axes. The height axis Z 'thus includes the directions Z'1 (upwards) and Z'2 (downwards). The latitude axis Y 'includes the directions Y'1 (to the right) and Y'2 (to the left). The depth axis X 'includes the directions X'1 (forward) and X'2 (rearward).

A pivoting of the backrest element according to the invention about the first pivot axis 3rd can thus forwards and backwards or along the directions X1 and X2 of the vehicle seat 100 respectively. In the figures, this is the direction of rotation with the arrows 3a and 3b featured.

On the backrest element 4th can upholstery elements 20th , 20a , 20b to be ordered. The backrest element 4th and the upholstery elements 20th , 20a , 20b thus form the backrest 21 . Even the seat part 5 can be an upholstery element 22 include. Finally, the headrest part 9 also a cushion element 31 include. The configuration with the cushion elements is, for example, in the 1 and 2nd clearly visible.

The holding structure 6 points two along the height axis Z. extending holding legs 6a , 6b on. These holding legs 6a , 6b are on the seat part 5 on an outer edge along the width axis Y in each case 5a , 5b of the seat part 5 arranged. The holding structure 6 has a cross strut extending along the width axis Y. 6c on which the holding legs 6a , 6b connects along the horizontal latitude axis Y. This cross brace 6c can be in one piece, or in one piece, with the holding leg 6a , 6b be trained. The holding legs 6a , 6b can also be by means of a screw connection, a rivet connection, a welded connection or another type of connection with the cross strut 6c be connected. The holding structure 6 is thus U-shaped.

The seat part 5 has a receiving element 23 for the upholstery element 22 or the seat. This receiving element 23 can be manufactured in such a way that it has a corresponding stability, which is sufficient for a corresponding force input through the holding legs 6a , 6b is. The cross strut 6c could thus be a section of the receiving element 23 which extends along the width direction Y. Alternatively, the cross brace 6c be a single component, which in or on the receiving element 23 is arranged. This cross brace 6c could also use the substructure 32 of the vehicle seat 100 be connected to forward a corresponding force input to this.

The backrest element 4th includes a lower part 4a , which along the height axis Z 'below the first pivot axis 3rd is arranged and an upper part 4b , which along the height axis Z 'above the first pivot axis 3rd is arranged. When swiveling according to the swivel direction 3a becomes the top part 4b pivoted backwards. At the same time, the lower part 4a pivoted forward. In this way, lordosis / kyphosis support can be brought about.

The basic structure 2nd is dimensionally stable and extends along the width axis Y '. How from 6 As can be seen, the base structure can have an arch-like structure which extends to the rear, that is to say in the depth direction X'2. The Basic structure 2nd has a middle section 25th on. This middle section 25th is parallel to the first pivot axis 3rd and spaced along the depth direction X'2 from the pivot axis. The middle section 25th the basic structure 2nd can be reinforced to ensure sufficient stability for a corresponding force application. From the middle section 25th one side section extends 26a , 26 linear to the swivel axis 3rd there. These side sections 26a and 26b open at the outer edge 2a , 2 B the base structure in a preferably circular receiving section 27a , 27b . At the receiving sections 27a , 27b is a bearing shaft element 17a , 17b arranged. The pivot axis 3rd runs through the center of the bearing shaft elements 17a , 17b .

The bearing shaft elements 17a , 17b are in a swivel position 7a , 7b the holding leg 6a , 6b rotatably mounted. It would be beneficial if the bearing shaft elements 17a , 17b through the holding legs 6a , 6b extend along the width axis Y and in a securing element 28a , 28b flow out. Such a security element 28a , 28b could, for example, in an armrest 29a , 29b be integrated, such as in 3rd indicated. In such an embodiment, the bearing shaft elements 17a , 17b also as a pivot bearing for the armrests 29a , 29b serve.

The vehicle seat 100 can also include a locking mechanism by means of which the pivoting of the backrest element 4th about the first pivot axis 3rd can be locked.

Furthermore, the vehicle seat 100 comprise a reset mechanism, by means of which a pivoting of the backrest element 4th about the first pivot axis 3rd can be reset to a starting position.

The backrest element 4th includes a stability element 8th in the form of a first plate-like element 12th . The first plate-like element 12th extends along the width direction Y 'and the height direction Z'. It can have a shell shape in which the user's lower back can be accommodated. For this purpose, the outer edges of the plate-like element would extend forward in the depth direction X'1.

The first plate-like element 12th is in a lower region along the height axis Z ' 1c the central structure 1 arranged. The first plate-like element 12th extends along the height axis Z 'of the backrest element 4th over the swivel axis 3rd out towards the seat part 5 . The lower part 4a of the backrest element 4th thus corresponds to that on the swivel axis 3rd protruding lower section 12a of the first plate-like element 12th . When swiveling along the direction of the gift 3a would become the upper section 12b of the first plate-like element 12th swing back and the bottom section 12a swivel forward. As already mentioned, this leads to lordosis / kyphosis support.

The first plate-like element 12th can be arranged pivotably on the central structure and / or can be flexible at least in sections. A pivoting and / or a deformation of the first plate-like element can thus take place 12th in the radial direction along the direction of the arrow 11 about a second pivot axis 10a be made possible. The second pivot axis 10a extends essentially along the height axis Z '. To a certain extent, a rotational movement of the user can be followed by pivoting or twisting the first plate-like element. Since the lower back is thus further supported, increased seating comfort is made possible.

On the first plate-like element 12th is still an upholstery element 20a arranged. The first plate-like element 12th , or the upholstery element. can preferably be designed such that the lower section 12a , or the lower section of the cushion element arranged thereon 20a the seat part 5 , or the upholstery element 22 , to contact. However, it could also be provided that there is a small free space between the cushion element 22 and the lower section 12a , or the lower section of the cushion element arranged thereon 20a is provided. Such a distance is preferably in a range between 0 cm and 7.5 cm, more preferably in a range between 0 cm and 5 cm, more preferably in a range between 0 cm and 2.5 cm.

The central structure 1 , 1a , 1b has at least one support element extending along the height axis Z ' 1a , 1 on, the bottom with the basic structure 2nd connected is. The 1 to 3rd it can be seen that the central structure 1 , 1a , 1b two support elements extending along the height axis Z ' 1a , 1b having the base structure on the underside 2nd are connected. The support elements 1a , 1b are spaced along the width axis Y '. Furthermore, the support elements open 1a , 1b in the middle section 25th the basic structure 2nd . The width of the middle section 25th is by the spaced support elements 1a , 1b given.

The backrest element 4th has two stability elements 8th on which in the form of rib elements 18a , 18b are trained. The rib elements 18a , 18b are along the height axis Z 'above the first plate-like element 12th arranged and each have an extension along the width axis Y '. A first rib element 18a extends along the width direction Y'2 and thus opposite to the second rib element 18b which extends along the width direction Y'1. The rib elements 18a , 18b are P-shaped and also extend slightly forward, i.e. in the direction X'1. These rib elements 18a , 18b serve to support the shoulder area of the user. Furthermore, the rib elements 18a , 18b at the central structure 1 , 1a , 1b be arranged, which is integrally formed with this. Accordingly, each is a rib element 18a , 18b on a support element 1a , 1b arranged or each a rib element 18a , 18b with a support element 1a , 1b integrally formed. Conceivable connections between the rib elements 18a , 18b and the support elements 1a , 1b are screw connections, welded connections, riveted connections, etc. Likewise, as mentioned, a rib element 18a , 18b with a support element 1a , 1b be formed integrally, so the two elements could be produced by a casting process or similar process.

On the rib elements 18a , 18b is still an upholstery element 20b arranged.

In addition, there is a headrest part 9 at the central structure 1 arranged. The headrest part 9 is along the height axis Z 'above the rib elements 18a , 18b by means of a first arm element 13 arranged. The first arm element 13 is between the support elements 1a , 1b arranged along the height axis Z '. This can be a fixed arrangement. Alternatively, this arrangement can be provided such that the headrest part 9 along the arrow 15 , so can be shifted along the height axis Z '. This is the headrest part 9 by means of a first arm element 13 , or an arm on the central structure 1 , arranged. The arm element 13 is between the support elements 1a , 1b arranged displaceably along the height axis Z '. To the first arm element 13 indicative side surfaces 30a , 30b of the support elements 1a , 1b For this purpose, a rail device could be provided, by means of which the first arm element 13 can be performed. It would also be conceivable that a locking mechanism is provided, by means of which a certain height of the headrest can be fixed. It would also be conceivable that a reset mechanism is provided, by means of which a reset to an initial height is carried out.

According to a further embodiment, the first arm element 13 a management facility 39 provided in which a second arm element 40 is guided along the height axis Z '. A predetermined height position of the second arm member 40 is by a locking device 41 definable. The displacement of the first arm element 13 can be cumulative or alternatively to the displacement of the second arm element 40 relative to the second arm element. It would also be possible for the first arm element 13 is firmly attached to the central structure.

On the second arm element 40 are preferably two guide pins 42 intended. The leadership facility 39 is U-shaped and has two U-legs extending along the depth direction X ' 39a , 39b a guide groove 47 or a guide rail on, in or on which a guide pin 42 is led. This embodiment is in the 7 to 12th shown. The U-shaped guide device 39 is on an upper section 13c of the first arm element 13 arranged. This upper section 13c of the first arm element 13 is offset along the depth axis X 'to the rear (depth direction X'2) to a lower section 13a of the first arm element 13 arranged. The second arm element takes up this displacement 40 substantially the same position along the depth axis X 'as the lower section 13a of the first arm element 13 on. The lower section 13a of the first arm element 13 is over a transition section 13b with the top section 13c connected. This transition section 13b and the lower section 13a close an angle α on. This is clearly evident in 10th . The angle α is preferably in a range between 10 ° and 80 °, more preferably between 25 ° and 65 °, more preferably between 35 ° and 55 °, more preferably between 40 ° and 50 °, more preferably 45 °.

Furthermore, the locking device 39 a predetermined number of protrusions 43 on. The tabs 43 are in the guide groove 47 arranged inside. Furthermore, the protrusions 43 complementary to a recess 44 the guide pins 42 educated. The locking device 41 further comprises a spring device 45 which is a rail 45a which, by means of at least one, preferably a plurality of spring elements 45b is pushed towards the protrusions. The rail 45a extends essentially over the entire length of the guide groove 47 . The rail 45a is still over two pens 48 , each in a guided tour 49 are guided, arranged on the U-leg. Due to the length of the guide, the maximum displacement path of the rail is 45a towards the protrusions 43 given.

In the 7 , 7a and 8th is the guide pin 42 in the lowest position of the guide groove 47 . This corresponds to the lowest position of the headrest part 9 . The guide pin 42 is in a locking position in which spring device 45 a head start 43 into the recess 44 of Leadership pin 42 presses. This will make the second arm element 40 and thus also the second plate-like element 19th held at that particular height position.

The user can apply a corresponding force along the height axis Z 'around the height position, as a result of which the spring device 45 forced press connection between the recess 44 of the leadership pin 42 and the lead 43 is solved. The guide pin 42 can then get another head start 43 that are below or above the original tab 43 lies, be relocated. Again, the respective lead 43 in the recess 44 of the guide pin 42 be recorded, with the spring device 45 again a corresponding press connection between the recess 44 and the now selected lead 43 is present. This configuration makes it easy to adjust the height position of the headrest part 9 reached. In the 7 , 7a for example, a lowermost position of the headrest part can be seen. In 9 , 10th and 11 an uppermost position of the headrest part is recognizable.

The leadership facility 39 has an end shot 46 for one guide pin 42 in which a rotation of the guide pin 42 and the second arm element 40 about a pivot axis S is made possible. The end seat is along the height axis Z 'at the upper end of the guide groove 47 arranged and is substantially circular. In the In the 9 and 10th it can be seen that the guide pin 42 themselves in the final shot 46 the guide groove 47 located. At the same time is the headrest part 9 extended upwards at most. Accordingly, the pivot axis extends S along the latitude axis Y '. Thus, a pivoting of the second arm element 40 and the second plate-like element along the depth axis X 'to the front (in the direction X'1). This is good in 10th recognizable. There is also a locking device on the guide device 50 which is a leaf-like element 51 includes. This sheet-like element is pressed by a prestress, for example generated by means of a spring element 51 in the exception 44 of the guide pin 42 , whereby this is locked in the still pivoted forward position. The leaf-like element can be exerted by a user 51 against the spring force and the guide pin 42 can back into the guide groove 47 be relocated.

The vehicle seat 100 can thus be brought into a stowed position, in which, on the one hand, the backrest element 4th essentially parallel to the seat part 5 , or parallel to the depth axis X of the vehicle seat 100 has been relocated. This is for example in the 13 , 19th , 20th , 25th and 26 recognizable. Furthermore, the headrest part can in this position 9 are pivoted such that it extends essentially parallel to the depth axis X '. In the reference system of the entire vehicle seat 100 would the headrest part 9 then extend substantially along the height axis Z '. This allows the vehicle seat 100 can be folded up to save space and stowed away if necessary. This is for example in the 13 , 19th , 20th , 25th and 26 shown. The vehicle seat 100 can then for example by means of a management system 52 under a shelf or a bed 64 be shifted (along arrow 53 ) and stowed there. The advantageously folded vehicle seat takes up very little storage space there.

The headrest part 9 has a second plate-like element 19th on which a cushion element 31 is arranged. The second plate-like element 19th is by means of a joint element 14 on the first 13 or second arm element 40 arranged. Through this joint element 14 is a swiveling of the headrest part 9 around a fourth pivot axis 10c , which runs essentially along the height axis Z ', and a pivoting about a fifth pivot axis 10d , which extends essentially along the width axis Y '. A pivoting around the fourth pivot axis 10c is indicated by the double arrow 16b shown and a pivoting about the fifth pivot axis 10d is indicated by the double arrow 16a shown.

The joint 14 connects the first 13 or the second arm element 40 with a rib structure 9a , which is V-shaped and on which the second plate-like element 19th is arranged.

In the 14 to 18th Embodiments are shown in which a locking device 54 to adjust the inclination of the backrest element 4th relative to the seat part 5 can be done. This locking mechanism 54 can in the holding structure 6 , or the holding legs 6a , 6b be integrated. The locking device 54 includes a basic element 55 which on the holding structure 6 , or the holding legs 6a , 6b arranged or fastened. On this basic element 55 is an actuator 56 rotatably attached. Furthermore, a tooth element 57 on the basic element 55 rotatably arranged. This tooth element 57 is with the central structure 1 firmly connected. In particular, the tooth element 57 with the basic structure 2nd connected. The tooth element 57 is with a receiving section 27a , 27b mechanically firmly connected. This can be done, for example, by welding.

The tooth element points at a lower end 57 a tooth section 57a in the form of a segment of a circle. Furthermore, is on the basic element 55 a locking element 58 arranged. This locking element 58 also has a tooth section 58a on which in the tooth section 57a of the tooth element 57 can intervene. The tooth section engages in a locking position 58a in the tooth section 57a one, causing the tooth element 57 is set. A rotation of the tooth element 57 about an axis of rotation 60 is thus prevented, which also causes the inclination of the backrest element 4th relative to the seat part 5 is set.

An actuation of the actuating element 56 along the direction of the arrow 61 ( 15 ) causes the actuator to rotate 56 around the axis 59 . A back section 56a of the actuator 56 is therefore contrary to the direction of the arrow 61 emotional. This will give you a head start 62 against the locking element 58 pressed so that an upper section 58b of the locking element 58 outwards or along the direction of the arrow 63 ( 16 ) is bent. In 19th is the locking element 58 indicated by dashed lines in this deformed state. By this deformation of the locking element 58 engages the tooth section 58a no longer in the tooth section 57a of the tooth element 57 on. The tooth element 57 can then be rotated with the back element, causing the inclination of the back element 4th is adjustable relative to the seat part. After the desired inclination has been set, the actuating element is opposite to the direction of the arrow 61 shifted. This can also be done automatically by applying a spring force. The locking element 58 can reversibly return to its original position, causing the tooth section 58a back into the tooth section 57a of the tooth element 57 , possibly on a different area of the tooth section 57a intervenes.

If the vehicle seat is to be put into a stowable condition, after unlocking the backrest can be swiveled forward in the direction of X1 until the backrest element 4th is arranged essentially parallel to the seat part. This is for example in the 19th to 21 and 24th to 26 shown.

Due to the independently pivotable or deformable stability elements 8th , in the form of the first plate-like element 12th and the rib elements 18a , 18b and the headrest part, which can be pivoted independently of this, can be pivoted and deformed when rotating in three planes, as a result of which the user can be optimally supported. In this way, incorrect posture can be avoided and a high level of seating comfort can be guaranteed.

Added to that is that by pivoting about the first pivot axis 3rd lordosis / kyphosis support is provided. The distance 37 between the first pivot axis 3rd can therefore be chosen in such a way that such lordosis / kyphosis support can be generated. The first distance between the pivot axis and the seat part is advantageously in a range between 2 cm and 30 cm, more preferably the first distance is in a range between 5 cm and 25 cm. The first distance is even more preferably in a range between 5 cm and 15 cm.

It would also be conceivable if the pivot bearing 7a , 7b the holding leg 6a , 6b along the height axis Z. would be adjustable. This would be the distance 37 between the first pivot axis 3rd and the seat part 5 adjustable, so that the lordosis / kyphosis support could be adapted to the user. This could be done, for example, with a locking device, the bearing shaft elements 17a , 17b are held in locking devices which are arranged at different heights.

Because through the upholstery element 20a which on the first plate-like element 12th is arranged, a certain distance 38 to the first pivot axis 3rd through the backrest 21 is taken, the backrest in conventional seats can not be pivoted so far forward that the backrest and the seat part are substantially parallel. By the distance according to the invention 37 between the swivel axis 3rd and the seat part, or the seat part surface, which comes into contact with the user, can be the backrest 21 , or the backrest element 4th are pivoted so far forward that the central structure or the backrest element are essentially parallel. This allows the seat to take up a much smaller storage space. The distance 37 would therefore have at least the distance 38 correspond.

In 4th is the seat base 32 shown which the seat part 5 with the vehicle body 33 connects. This seat base 32 includes a scissor frame 34 with a suspension device 35 , for example an air spring and a damper device 36 . Furthermore, a horizontal suspension can also be provided. The seat base 32 can also be a cover device 24th include, which covers the components mentioned

In the 19th to 27 is the vehicle seat 100 designed as an advantageous front passenger seat in a commercial vehicle cabin 65 is arranged. Such a vehicle cabin can be provided, for example, in a truck. In the 19th and 24th is always an opened state shown of the vehicle seat in which the vehicle seat 100 is arranged in a front area of the commercial vehicle. In the 20th , 21 , 25th and 26 is the vehicle seat 100 in a folded state. Here is the backrest element 4th essentially parallel to the seat part 5 . This is made possible by the spacing of the first pivot axis according to the invention 3rd along a height axis Z. of the vehicle seat 100 from the seat part 5 is spaced.

Due to the advantageous design of the headrest part already described 9 in which the arm element 13 in a management facility 39 is shiftable, the headrest part 9 advantageously along the height direction Z2 folds down. The headrest part 9 would after folding the vehicle seat 100 over the seat part 5 protrude and viewed as disturbing due to the limited interior. Due to the advantageous folding of the headrest part 9 the seat length is significantly reduced in the folded state.

In many commercial vehicle cabins 65 is a bed or a shelf 64 behind the vehicle seats 100 intended. The advantageous collapsible vehicle seat 100 can according to the embodiments according to 13 and 19th to 27 under the bed or the shelf 64 be stowed away. There is a guidance system for this 52 , or a rail system provided. By means of this guidance system 52 is the vehicle seat 100 connected to the body floor or the floor of the commercial vehicle cabin. At least one, preferably two, lower rail element (s) is / are 66 provided, which is embedded in the body floor or cabin floor or fastened to it. On this lower rail element 66 is / are at least one, preferably two upper (s) rail element (s) 67 provided which / s with the vehicle seat 100 is / are connected. The two lower rail elements advantageously run 66 parallel.

On the upper rail elements 67 is still a locking device 68 provided by means of which the vehicle seat 100 can be locked in a corresponding position. To operate the locking device 68 can be a Bowden cable 69 be provided. This is in the 19th to 23 shown. Alternatively, a lever element 70 be provided ( 24th to 27 ). In the 19th and 24th is a maximum front position of the upper rail elements 67 shown in which the vehicle seat would be in a corresponding maximum front position. In the 21 and 26 is a maximum rear position of the upper rail elements 67 shown in which the vehicle seat would be in a corresponding maximum rear position. This would fold up under the bed or under the shelf 64 to find oneself.

The vehicle seat is only during the actuation of the locking device 68 relocatable. As soon as the actuation is released, the locking device engages 68 and locks the vehicle seat 100 at the appropriate position. The shift can be done by muscle strength of the user. However, an actuator could also be provided, which shifts the vehicle seat to the desired position. Such an actuator can be driven, for example, electrically or hydraulically.

In the 23 and 27a (Front), 27b (rear) is the locking device 68 shown. This includes a lever element 71 , which is rotatable about an axis of rotation. The lever element is on the upper rail element 67 by means of a fastener 72 attached. On the lever element 71 there are latching elements which engage in a toothed strip which on the lower rail element 68 is provided. Due to the engagement there is a firm locking between the upper one 67 and the lower rail element 66 . Furthermore, a reset element 73 provided in the form of a spring element, by means of which the rotation of the lever element can be reset. Through this reset element 73 after the actuation of the locking device 68 these are brought back into the locked state.

In 29 the underside of the vehicle seat 100 is shown. Here are the top rail elements 67 of the management system 52 recognizable.

By folding the vehicle seat 100 This enables a larger area to be cleared in the front area of the commercial vehicle cabin, either on the passenger side or on the driver side, or in both areas, for example to arrange a table or other desired additional building modules or components, which then make it possible to use the commercial vehicle cabin for a different period of time. Another sleeping place can also be arranged in this area, for example.

The vehicle seat according to the invention 100 with the new backrest structure 4th is characterized by the fact that struts / strut elements or lateral stability elements 4th , which can also be arranged pivotably, to the left and right of a central, force-absorbing longitudinal structure running from top to bottom 1 stretch away. This centrally arranged rear longitudinal structure 1 is on the underside on a pivot axis that is preferably oriented horizontally or based on the horizontal 3rd supported and thus firmly connected. In this way, these are the back central structure / longitudinal structure 1 and the pivot axis 3rd suitable for the front and back of the backrest 21 to pivot, it is crucial that this pivot axis 3rd opposite the seat part 5 raised in a U-shaped profile 6 , which is different from the seat part 5 extends upwards in its rear, is arranged. As a result, if this said pivot axis 3rd left and right in upstanding U-legs 6a , 6b is fixed, a pivoting movement, for example in the region of the lumbar vertebrae or even above or below it, can be carried out. This causes the backrest to tilt 21 leaves the below the swivel axis 3rd lying backrest part 4a swivel forward when swiveling and thereby bring about lordosis / kyphosis support.

In 1 becomes a vehicle seat 100 shown in perspective rear view. This illustration shows that the vehicle seat has a completely new back structure 100 acts. This back structure 4th consists of a central longitudinal support structure 1a , 1b and from top to bottom from individual components 8th or a single component 8th together.

With the structural elements 1a and 1b , which extend from top to bottom and are designed here as preferably vertically extending support elements, are force-absorbing support elements 1a , 1b , the underside with a swivel axis 3rd are connected. In this way, when pivoting about the pivot axis 3rd according to the arrows 3a , 3b the whole is above the swivel axis 3rd extending back structure 4b swiveled forward or backward. This applies in the opposite direction for the lower part 4a that turns into the seat part 5 extends to. An upper part 4b and a headboard 9 this backrest 21 are therefore opposite the lower part 4a opposite with respect to the pivot point 3rd pivotable.

This pivoting movement is achieved in that the pivot axis 3rd is arranged higher, i.e. higher than the seat part 5 . This is achieved by using a U-shaped mounting frame 6a , 6b , 6c in the rear area of the seat part 5 is arranged to by means of the U-leg 6a and 6b an arrangement of the pivot axis 3rd to achieve in a higher state.

The backrest structure 4th also has side elements 18a and 18b as well as a headboard 9 on, which is about a vertical pivot axis / force axis 10a , 10b , 10c along the direction of the arrow 11 could also be pivoted, but not necessarily. This goes out 2nd that the backrest 21 shows in perspective. This gives the backrest a high degree of flexibility 21 reached.

This flexibility is also achieved in that the plate-like element 12th is not inflexible. Rather, it has this plate-like element 12th the function that it is opposite the pivot axis 3rd and optionally the longitudinal support structure 1a , 1b is flexibly arranged for support purposes of the back and can also twist laterally backwards and forwards. This will separate the part according to the sections 18a and 18b in the upper shoulder area regardless of the area below according to the plate-like element 12th movable or just not movable.

At a central one upwards along the force axis 10 a , 10b , 10c extending arm 13 is the headrest part 9 arranged, which of course also forwards or backwards in a joint not shown here 14 for tilting forward or backward tilting of a head can be arranged. This headboard can also be used 9 also be arranged laterally pivotable to the left and right about a vertical axis.

In the 2nd , 3rd and 4th this is shown again in more detail. Here you can also clearly see that the swivel axis 3rd around the pan direction 3a , 3b can be swiveled so that the entire backrest structure 4th including the innovatively designed side rib elements that extend obliquely upwards and also slightly forward 18a , 18b , pivots. These rib elements 18a , 18b are in a similar shape in the headboard 9 as a rib structure 9a trained as well.

Also in 4th the headrest is shown, which is on the one hand, up and down, along the arrow 15 could be moved, on the other hand could also be pivoted forward and backward, as it is by the double arrow 16a is shown.

Likewise, the head part can be according to the double arrow 16b swivel left and right if desired. This is in 5 shown, which shows a partial top view of the seat.

In a representation according to 2nd and 3rd becomes the swivel axis 3rd with their Swivel bracket with respect to the U-shaped, not shown here, extending from bottom to top storage part shown. In this area 27a , 27b a swivel or rotary bearing is arranged. Both the pivot axis preferably have 3rd as well as the rest of the back structure according to the invention for stability reasons and for weight reasons an aluminum alloy.

In 1 is the seat with the back structure according to the invention 4th and the innovative U-shaped mounting by means of two upwardly extending U-shaped arms 6a , 6b shown.

The driver's seat 100 has been developed as a passenger vehicle seat, which can also be designed as a driver's seat, which saves space in the rear area of the commercial vehicle cabin 65 can be stowed in the folded state, so an increased space requirement in the front area of the commercial vehicle cabin 65 , for example for the construction of a table for taking a meal.

Such a passenger or driver seat 100 can be changed such that the entire backrest area 4th except for the seat part 5 is to be folded down so that a back of the backrest area 4th is arranged almost horizontally. Then this vehicle seat 100 when folded, move it backwards by placing it on rails embedded in the body floor or on rails 52 is moved backwards.

For this, the seat has 100 on its underside complementary rail elements 66 , 67 or roller elements or sliding blocks or the like to make a displacement in the forward and backward direction of the vehicle seat 100 to enable.

Of course, such a vehicle seat 100 when unfolded, i.e. when it is in the front area of the commercial vehicle cabin 65 is arranged in its regular driving state, can be locked by means of additional elements, not shown here, in order to ensure driving safety for the person.

This vehicle seat can also be used 100 in the folded state when it is in the rear of the commercial vehicle cabin 65 below a bed 64 or the like is arranged, can also be locked. This can be made possible, for example, by means of levers and correspondingly designed latching elements.

The pivot axis 3rd of which the backrest part 4th towards the front of the seat 5 is folded down, is arranged elevated. This means that the swivel axis 3rd in the present case with bearing legs extending upwards on the left and right sides 6a , 6b is held so that the pivot axis 3rd opposite the seat part 5 in the height direction Z. has a distance.

This is the only way to find upholstery elements 20th of the backrest part 4th and upholstery elements 22 of the seat part 5 enough space when the backrest part 4th is folded down. This enables the backrest part 4th really located in the horizontal direction and the upholstery elements 20th , 22 not obstructing itself when the backrest part is folded down 4th or oppose when swiveling the backrest part down.

The pivot axis 3rd is in the horizontal direction behind the backrest part 4th arranged and at the same time holds the entire backrest part 4th . The backrest part 4th is arranged separately from the seat part. This is also clearly shown in the figures, which also have a central structure 4th shows, which is characterized in that it is from the pivot axis 3rd extends upwards in the lower area and thus enables a handy and space-saving backrest structure due to a centrally arranged central structure with structural elements extending laterally from it. The shoulder area and the backrest area underneath are formed separately with shell elements.

The backrest element 4th is preferably made of aluminum or an aluminum alloy in order to obtain a correspondingly low weight. The already mentioned upwardly extending legs arranged laterally 6a , 6b have on their upper side bearing elements, for example in the form of ball bearings, around the pivot axis 3rd , or the basic structure 2nd end storage in it. Likewise are the upwardly extending legs 6a , 6b optionally with armrests 13 Mistake. These can also be arranged pivotably. The leg elements extending upwards 6a , 6b can also be U-shaped as a one-piece element together with parts of the seat part 5 or a seat plate.

In 28 is the vehicle seat 100 shown from above. The backrest is clear 4th to see the structural elements in the rear area of the backrest 4th having. The swivel axis is also 3rd reproduced in the upwardly extending leg elements 6a , 6b is stored. The seat part 5 can also be seen.

All the features disclosed in the registration documents are considered as claimed essential to the invention, provided that they are new compared to the prior art individually or in combination.

Reference list

100

Vehicle seat

1

Central structure

1a, 1b

Support elements

1c

lower part of the central structure

2nd

Basic structure

2a, 2b

outer edge of the basic structure

3rd

first pivot axis

3a, 3b

Swivel direction

4th

Backrest element

4a

lower part of the backrest element

4b

upper part of the backrest element

5

Seat part

5a, 5b

outer edge of the seat part

6

Holding structure

6a, 6b

Holding leg

6c

Cross bracing of the holding structure

7a, 7b

Swivel bearing

8th

Stability element

9

Headrest part

9a

Rib structure

10a

second pivot axis with respect to the pivoting of the first plate-like element

10b

third pivot axis with respect to the pivoting of the rib elements

10c

fourth pivot axis with respect to the pivoting of the second plate-like element

10d

fifth pivot axis with respect to the pivoting of the second plate-like element

11

Arrow direction

12th

first plate-like element

12a

lower section of the first plate-like element

12b

upper section of the first plate-like element

13

Arm element

13a

lower section of the first arm element

13b

Transition section

13c

upper section of the first arm element

14

Joint element

15

arrow

16a, 16b

Double arrow

17a, 17b

Bearing shaft element

18a, 18b

Rib elements

19th

second plate-like element of the headrest part

20th

Upholstery element

20a

Upholstery element

20b

Upholstery element

21

backrest

22

Upholstery element of the seat part

23

Seat element of the seat part

24th

Covering device of the seat substructure

25th

middle section of the basic structure

26a, 26b

lateral sections of the basic structure

27a, 27b

Receiving sections of the basic structure

28a, 28b

Securing element

29a, 29b

armrest

30a, 30b

Side surfaces of the support elements

31

Upholstery element

32

Seat substructure

33

body

34

Scissors frame

35

Suspension device

36

Damper device

37

distance

38

distance

39

Management facility

39a, 39b

U-leg

40

second arm element

41

Locking device

42

Guide pin

43

Ledges

44

Recess

45

Spring device

45a

rail

45b

Spring elements

46

Final recording

47

Guide groove

48

pencils

49

guide

50

Locking device

51

leaf-like element

52

Management system

53

arrow

54

Locking mechanism

55

Basic element

56

Actuator

56a

rear section of the actuator

57

Tooth element

57a

Tooth section of the tooth element

58

Locking element

59

Axis of rotation

60

Axis of rotation

61

arrow

62

head Start

63

arrow

64

Storage or bed

65

Commercial vehicle cabin

66

lower rail element

67

upper rail element

68

Locking device

69

Bowden cable

70

Lever element

71

Lever element

72

Fastener

73

Reset element

X

Depth axis

Y

Latitude axis

Z.

Height axis

X '

Depth axis

Y '

Latitude axis

Z '

Height axis

S

Swivel axis

α

angle

Claims (15)

Vehicle seat (100) with an extension along a height axis Z and a width axis Y, comprising a seat part (5) and a backrest element (4) which extends along a height axis Z 'and in a width axis Y', characterized in that the backrest element (4) has a central structure (1, 1a, 1b) extending along the height axis Z ', which is arranged centrally along the width axis Y' and opens into a basic structure (2) extending essentially along the width axis Y ', the Backrest element (4) has at least one stability element (8) which extends away from the central structure (1, 1a, 1b) along the width axis Y ', the base structure (2) being pivotably arranged in a holding structure (6) of the vehicle site (100) , so that the backrest element (4) can be pivoted about a first pivot axis (3), the first pivot axis (3) along a height axis Z of the vehicle seat from the sit part (5) is spaced. Vehicle seat (100) after Claim 1 characterized in that the holding structure (6) has two holding legs (6a, 6b) extending along the height axis Z, the holding legs (6a, 6b) on the seat part (5) each having an outer edge (5a, 5b) of the seat part (5), the holding structure (6) being U-shaped, the holding structure (6) having a transverse strut (6c) which extends along the width axis Y and which connects the holding legs (6a, 6b) . Vehicle seat (100) after Claim 1 or 2nd , characterized in that the backrest element (4) has a lower part (4a) which is arranged along the height axis Z 'below the first pivot axis (3) and an upper part (4b) which along the height axis Z' above the first pivot axis (3) is included. Vehicle seat (100) according to one of the preceding claims, characterized in that the base structure (2) is dimensionally stable, the base structure (2) having a bearing shaft element (17a, 17b) on its outer edges (2a, 2b) along the width axis Y '. which is arranged in a pivot bearing (7a, 7b) of a holding leg (6a, 6b). Vehicle seat (100) according to one of the preceding claims, characterized in that that the vehicle seat (100) comprises a locking mechanism by means of which the pivoting of the backrest element (4) about the first pivot axis (3) can be locked. Vehicle seat (100) according to one of the preceding claims, characterized in that the vehicle seat (100) comprises a reset mechanism by means of which a pivoting of the backrest element (4) about the first pivot axis (3) can be reset towards a starting position. Vehicle seat (100) according to any one of the preceding claims, characterized in that the backrest element (4) comprises a stability element (8) in the form of a first plate-like element (12), the first plate-like element (12) along the height axis Z 'in one lower region (1c) of the central structure (1) is arranged, the first plate-like element (12) extending along the height axis Z 'of the backrest element (4) beyond the pivot axis (3) in the direction of the seat part (5), the lower part (4a) of the backrest element (4) is the lower section (12a) of the first plate-like element (12) which projects beyond the pivot axis (3). Vehicle seat (100) after Claim 7 , characterized in that the first plate-like element (12) is arranged pivotably on the central structure and / or is at least partially flexible, with pivoting and / or deformation of the first plate-like element (12) in the radial direction about a second pivot axis ( 10a) is made possible, the second pivot axis (10a) extending essentially along the height axis Z '. Vehicle seat (100) according to one of the preceding claims, characterized in that the central structure (1, 1a, 1b) has at least one support element (1a, 1b) which extends along the height axis Z 'and is connected on the underside to the base structure (2) , The central structure (1, 1a, 1b) has two support elements (1a, 1b) extending along the height axis Z ', which are connected on the underside to the base structure (2), the support elements (1a, 1b) along the width axis Y 'are spaced. Vehicle seat (100) according to one of the preceding claims, characterized in that the backrest element (4) has two stability elements (8) which are designed in the form of rib elements (18a, 18b), the rib elements (18a, 18b) along the height axis Z 'are arranged above the first plate-like element (12), the rib elements (18a, 18b) each having an extension along the width axis Y', a first rib element (18a) extending in the opposite direction to the second rib element (18b) , wherein the rib elements (18a, 18b) are arranged on the central structure (1, 1a, 1b) or are formed integrally therewith, one rib element (18a, 18b) being arranged on a support element (1a, 1b) or one each Rib element (18a, 18b) is integrally formed with a support element (1a, 1b). Vehicle seat (100) according to one of the preceding claims, characterized in that a headrest part (9) is arranged on the central structure (1), the headrest part (9) being arranged along the height axis Z 'above the rib elements (18a, 18b), the headrest part (9) being displaceable along the height axis Z ', the headrest part (9) being arranged on the central structure (1) by means of a first arm element (13), the arm element (13) between the support elements (1a, 1b) along the Height axis Z 'is arranged displaceable. Vehicle seat (100) after Claim 11 , characterized in that the headrest part (9) can be displaced along the height axis Z ', a guide device (39) being provided on the first arm element (13), in which a second arm element (40) is guided along the height axis Z', wherein a predetermined height position of the second arm element (40) can be fixed by a locking device (41), a second plate-like element (19) being arranged on the second arm element (40). Vehicle seat (100) according to one of the Claims 11 to 12th , characterized in that at least one guide pin (42) is provided on the second arm element (40), the guide pin (42) being guided in the guide device (41), the fixing device (41) having a predetermined number of projections (43) which are complementary to a recess (44) provided on the guide pin (42), wherein in a locking position a spring device (45) presses a projection (43) into the recess (44) of the guide pin (42), the guide device (39) comprises an end receptacle (46) for the at least one guide pin (42), in which rotation of the guide pin (42) and the second arm element (40) around a pivot axis S is made possible, the pivot axis S extending along the width axis Y 'extends, whereby the second plate-like element (19) can be pivoted forward along the depth axis X' by pivoting the second arm element (40). Vehicle seat (100) according to one of the Claims 11 to 13 , characterized in that. the headrest part (9) has a second plate-like element (19), the second plate-like element (19) is arranged on the first (13) or the second arm element (40) by means of an articulated element (14), the second plate-like element (19) being pivotable about a fourth pivot axis (10c) which runs essentially along the height axis Z ' , wherein the second plate-like element (19) is pivotable about a fifth pivot axis (10d), which extends essentially along the width axis Y '. Commercial vehicle cabin (65) with a vehicle seat (100) according to one of the preceding Claims 1 to 14 The vehicle seat (100) is arranged such that it can be displaced in the commercial vehicle cabin (65) by means of a guide system (52).

Images