DE102021213991A1 - Cabin storage for a commercial vehicle and commercial vehicle - Google Patents

Abstract

The invention relates to a cab mounting (5) for a commercial vehicle, comprising at least four two-point links (6, 7, 8, 9, 30, 32) and four spring-damper modules (10), the two-point links (6, 7, 8, 9, 30, 32) are each articulated in a vehicle frame-side and a driver-cab-side connection point (15, 16) on the driver's cab (1) and the vehicle frame (2), with two of the two-point links (6, 7, 8, 9, 30, 32 ) extend as trailing links (6, 7) in the longitudinal direction (x) of the vehicle, the two other two-point links (6, 7, 8, 9, 30, 32) extending as transverse links (8, 9, 30, 32) essentially in the transverse direction of the vehicle (y). Cab mounting (5) at least one of the two wishbones (8, 9, 30, 32) extending in the transverse direction (y) of the vehicle in its respective connection point (15, 16) on the vehicle frame side and on the driver's cab side for setting an offset (D) between the lines of action (25, 26, 31, 33) the wishbone (8, 9, 30, 32) is designed to be adjustable by an adjustment means.

Description

The invention relates to a cab mounting for a commercial vehicle according to the preamble of claim 1. The present invention also relates to a commercial vehicle with a driver's cab that is movably mounted on a vehicle frame by a cab mounting.

Cab mounts have the task of decoupling the driver's cabin from the excitation of the vehicle frame and enabling the driver's cabin to be tilted for maintenance of the drive unit. A two-part system is used for this purpose, with the front part consisting of a driver's cab stabilizer with longitudinal guidance, which also allows the driver's cab to be tilted about a horizontal pivot axis running in the transverse direction of the vehicle. Two spring-damper modules support the driver's cab vertically. The rear part of the driver's cabin consists of two locks, by means of which the driver's cabin can be uncoupled for tilting. The two locks transmit the vertical and lateral forces. The transverse guide can be designed as a Panhard rod. As in the front, the vertical forces in the rear of the driver's cab are supported by two spring-damper modules.

A cabin mounting for a commercial vehicle of the type described above is from DE 10 2013 000 362 B4 known. The cab mounting comprises a transverse stabilizer arranged in the front area of the driver's cab with a transverse torsion bar and two rockers, a frame-fixed bracket arranged in the rear area of the driver's cab, which is articulated on two rockers, and four spring-damper modules, by means of which the driver's cab is movably mounted on a vehicle frame is. The transverse torsion bar and the bracket extend in the transverse direction of the vehicle and are articulated at a distance from one another in the vehicle longitudinal direction on consoles, of which two consoles are rigidly arranged on a frame structure of the driver's cab, here the driver's cabin floor, and two consoles are rigidly arranged on the vehicle frame, here the vehicle body . The cab floor and the vehicle body are connected by a longitudinal stabilizer.

Based on the prior art described above, it is now the object of the present invention to further develop a cabin mounting of the type mentioned at the outset, which is characterized by a simpler structure and can be adapted to different purposes and vehicle classes with as little effort as possible.

This object is achieved by a cab mounting for a commercial vehicle based on the preamble of claim 1 in conjunction with its characterizing features. The dependent claims that follow each specify advantageous developments of the invention. Furthermore, the object is achieved by a vehicle based on the preamble of independent claim 16 in conjunction with its characterizing features.

According to the invention, a cab mounting for a commercial vehicle is proposed, comprising at least four two-point links and four spring-damper modules, by means of which a driver's cab is movably mounted on a vehicle frame, the two-point links each being in a vehicle frame-side and a driver's cab-side connection point on the driver's cab and the Vehicle frame are articulated, two of the two-point link extend as a trailing arm substantially in the vehicle longitudinal direction and spaced apart in the vehicle transverse direction and are designed to restrict the forward and backward movement of the driver's cab. According to the invention, it is provided that the at least two other two-point links extend as transverse links essentially in the transverse direction of the vehicle, with their lines of action running through a respective connection point of the transverse links on the vehicle frame side and driver's cab running essentially parallel to one another, with at least one of the two being the same for setting a roll rigidity of the cab mounting substantially in the transverse direction of the vehicle is designed to be adjustable in its respective connection point on the vehicle frame side and driver's cabin side for setting an offset between the lines of action of the transverse links by an adjustment means, wherein the arrangement of the at least two transverse links in relation to a plane spanned in the vehicle transverse direction and in the vehicle vertical direction is essentially a parallelogram is equivalent to.

The parallelogram-like arrangement of the at least two wishbones according to the invention allows the roll stiffness, which can be achieved solely by the four springs of the spring-damper modules, to be adjusted, ie increased, in order to be able to convey a subjectively more pleasant driving experience. A further advantage is that at least the wishbones, in particular all two-point links designed as wishbones, can be used across the board, ie can be used to mount different cabin variants. In this case, the at least two wishbones can have the same rigidity, so that only setting an offset is sufficient to change the roll rigidity of the cab mounting. The adjustable by the setting offset denoted net a distance between the lines of action of the wishbones perpendicular to the lines of action of the trailing arms.

A minimization of the tension in the case of vertical suspension of the driver's cab is achieved in that the lines of action running through the respective vehicle frame-side and driver's cab-side connection points of the at least two wishbones run essentially parallel to one another. The body spring rate, i.e. the stiffness during compression and rebound, is not affected as long as the two lines of action of the wishbones are parallel, in particular strictly or genuinely. In the case of wishbones whose lines of action do not run parallel to one another, the driver's cab can twist about the vertical axis during compression and rebound, which the trailing arms counteract.

The commercial vehicle can be equipped with an electric motor drive, which is usually arranged near the axle. The driver's cab can be designed to be fixed to the cab mounting. The driver's cab does not have to be tilted for maintenance purposes.

In particular, to adjust the offset, at least one of the wishbone brackets can be arranged as adjustment means on the vehicle frame and the driver's cab, which have multiple attachment points arranged one above the other offset in the vertical direction of the vehicle for fixing the wishbone. Thus, several bores arranged one above the other in the vertical direction of the vehicle can be provided as attachment points on the brackets in order to arrange the at least one wishbone on the vehicle frame side and/or on the driver's cab side to set an offset.

Alternatively, the at least two wishbones can be arranged on the vehicle frame and the driver's cab by means of brackets as adjustment means, the brackets of one of the wishbones having a height that differs from the brackets of the other wishbone. This alternative is advantageous if different cab variants are provided for the same type of commercial vehicle.

In particular, the at least two wishbones can have bearing points at the end, which are connected to one another by a curved connecting section or a connecting section that runs essentially straight. The connecting section of the respective wishbone can have a curve that is essentially curved or cranked in the longitudinal direction of the vehicle. In particular, the curved connecting section of the respective wishbone can point outwards in the longitudinal direction of the vehicle in the mounted state and/or in opposite directions in the vertical direction of the vehicle. In principle, the respective wishbone can have a course that is curved in sections or a course that is essentially continuously straight. The wishbones have a shape that is adapted to the available installation space, the course of the lines of action being independent of the shape of the wishbones or the connecting sections.

The at least two wishbones should preferably have essentially the same length. In this way, tension between the wishbones can be avoided when the driver's cab compresses and extends. In particular, with wishbones of different lengths, the driver's cab can twist about the vertical axis during compression and rebound, which the trailing arms counteract.

In particular, the at least two wishbones can have a transverse offset in relation to a plane spanned in the vehicle longitudinal direction and vehicle vertical direction. A transverse offset is an arrangement of the two wishbones that is offset or shifted relative to one another in the vehicle transverse direction, it being possible for the free ends, as seen in the vehicle vertical direction, to be arranged one above the other in alignment.

It can preferably be provided that lines of action running through the respective connection point of the trailing arm on the vehicle frame side and driver's cab side run essentially parallel to one another and parallel to the longitudinal direction of the vehicle. In this case, the trailing arms can be arranged mirror-symmetrically with respect to a plane spanned in the longitudinal direction of the vehicle and in the vertical direction of the vehicle.

In particular, the wishbones can be arranged mirrored in relation to a plane spanned in the vehicle longitudinal direction and vehicle transverse direction and/or a plane spanned in the vehicle transverse direction and in the vehicle vertical direction. In particular, sections of one of the wishbones run below and the other wishbone runs above the plane spanned in the vehicle longitudinal direction and vehicle transverse direction.

In particular, if an offset is set that is not equal to zero, the position of the lines of action of the wishbones in the vertical direction of the vehicle can deviate from one another, with the lines of action of the wishbones being able to have a substantially purely vertical offset when viewed in the direction of the lines of action of the trailing arms, ie in the longitudinal direction of the vehicle. In this version, the increase in roll rigidity results from the rigidity of the cabin, the rigidity of the wishbones and the rigidity of the frame Lateral wishbone connection. The rigidity of the longitudinal links has no additional influence on the roll rigidity in an embodiment that comprises only two parallelogram-like arrangement of the transverse links because of the parallelogram-like arrangement of the transverse links. In a design with three or more wishbones, the roll stiffness can also be influenced by the stiffness of the two trailing arms.

A non-zero offset means that the offset takes on a value that is greater than or less than zero. In relation to the plane spanned in the longitudinal direction and transverse direction of the vehicle, this means a vertical deviation in a positive direction, i.e. upwards in the direction of the driver's cab, or a vertical deviation in a negative direction, i.e. downwards in the direction of the vehicle frame.

The roll axis can run parallel to the lines of action of the trailing arms running in a plane spanned in the vehicle longitudinal direction and vehicle vertical direction. The position of the roll axis corresponds to a parallel to the lines of action of the trailing arms, at least in one embodiment that comprises only two transverse links arranged in the manner of a parallelogram, with the roll axis running between the lines of action of the transverse links.

The at least two transverse links, the arrangement of which essentially corresponds to a parallelogram, can be arranged upstream of the trailing links, downstream of the trailing links or in the region of the trailing links, as seen in the longitudinal direction of the vehicle. When the two transverse links are arranged in the area of the trailing links, these can be positioned between the respective connection points of the trailing links on the vehicle frame side and on the driver's cab side, viewed in the longitudinal direction of the vehicle.

If more than two wishbones are provided, the arrangement of the one further wishbone or the two further wishbones, the arrangement of which essentially corresponds to a parallelogram in relation to the plane spanned in the transverse direction of the vehicle and in the vertical direction of the vehicle, has a significant distance to the other two wishbones.

In particular, the significant distance should be at least one third of the length of the trailing arms.
In particular, the at least two wishbones can be arranged in the central region of the driver's cab, with the two wishbones arranged in the manner of a parallelogram being positioned essentially at the height of the center of gravity of the driver's cab, viewed in the longitudinal direction of the vehicle.

According to one development, at least one further wishbone on the opposite side of the driver's cab can be assigned to the two wishbones, whose arrangement in the plane spanned in the vehicle transverse direction and in the vehicle vertical direction essentially corresponds to a parallelogram.

The design of the parallelogram-like arrangement according to the invention of two wishbones with at least one additional wishbone can be advantageous when using metal-rubber bearings with soft rubber elements in the bearing points of the trailing arms, which thus have a lower longitudinal rigidity. In the case of a lateral force acting in the center of gravity of the driver's cab, in the variant with exactly two trailing arms and exactly two wishbones, high longitudinal forces can also be caused in the trailing arms due to the force and moment balance, in opposite directions on the left and right side of the driver's cab. In combination with the soft metal-rubber bearings, the driver's cab yaws when it rolls, which has an unfavorable effect on the driver's perception. Furthermore, such soft metal-rubber bearings are always in the attack and cannot dampen longitudinal impacts as desired, for example when cornering. The at least one additional wishbone can stabilize the driver's cab, among other things, when cornering, in that the additional wishbone prevents yawing and relieves the load on the trailing arms.

The two transverse links, the arrangement of which in the plane spanned in the transverse direction of the vehicle and in the vertical direction of the vehicle essentially corresponds to a parallelogram, can preferably be assigned two further transverse links on the opposite side of the driver's cab.

In particular, the arrangement of the two further wishbones in relation to the plane spanned in the transverse direction of the vehicle and in the vertical direction of the vehicle can essentially correspond to a parallelogram.

Due to the additional fourth wishbone, which forms a second parallelogram with the third wishbone, a further increase in the rolling stiffness can be achieved compared to the embodiment with only three wishbones.

Furthermore, the task set at the outset is achieved by a commercial vehicle, in particular with an electric motor drive, comprising a movable cabin bearing on a Driver's cab mounted on the vehicle frame, which is characterized in that the cab mounting is designed according to one of claims 1 to 15. Reference may be made to the advantages of the cabin mounting according to the invention.

The invention is not limited to the specified combination of the features of the independent claims or the claims dependent thereon. There are also possibilities of combining individual features with one another, even if they emerge from the claims, the following description of preferred embodiments of the invention or directly from the drawings. Reference of the claims to the drawings by the use of reference signs is not intended to limit the scope of the claims.

• 1 exemplarisch und schematisch eine isometrische Ansicht einer Fahrerkabine eines Nutzfahrzeugs von vorne;
• 2 exemplarisch und schematisch eine isometrische Ansicht der Fahrerkabine gemäß 1 von hinten;
• 3 schematisch eine isometrische Darstellung einer erfindungsgemäßen Anordnung von Lenkern einer Kabinenlagerung;
• 4 schematisch eine Ansicht der Anordnung der Lenker der Kabinenlagerung gemäß 3 von hinten (a) und von der Seite (b);
• 5 schematisch eine Ansicht der Lenker der Kabinenlagerung gemäß 3 von hinten (a) und von der Seite (b) mit einer alternativen Anordnung von Querlenkern;
• 6 schematisch eine isometrische Darstellung einer Anordnung von Lenkern der Kabinenlagerung gemäß einem zweiten Ausführungsbeispiel;
• 7 schematisch eine Ansicht der Anordnung der Lenker der Kabinenlagerung gemäß 6 von hinten (a) und von der Seite (b);
• 8 schematisch eine isometrische Darstellung einer Anordnung von Lenkern der Kabinenlagerung gemäß einem dritten Ausführungsbeispiel; und
• 9 schematisch eine Ansicht der Anordnung der Lenker der Kabinenlagerung gemäß 8 von hinten (a) und von der Seite (b).

Advantageous exemplary embodiments of the invention, which are explained below, are illustrated in the drawings. It shows:

• 1 exemplary and schematic isometric view of a driver's cab of a commercial vehicle from the front;
• 2 exemplarily and schematically an isometric view of the driver's cab according to 1 from behind;
• 3 schematically an isometric representation of an inventive arrangement of links of a cabin mounting;
• 4 schematically shows a view of the arrangement of the links of the cabin mounting according to FIG 3 from behind (a) and from the side (b);
• 5 schematically shows a view of the link of the cabin mounting according to FIG 3 from behind (a) and from the side (b) with an alternative arrangement of wishbones;
• 6 schematically an isometric representation of an arrangement of links of the cabin mounting according to a second embodiment;
• 7 schematically shows a view of the arrangement of the links of the cabin mounting according to FIG 6 from behind (a) and from the side (b);
• 8th schematically an isometric representation of an arrangement of links of the cabin mounting according to a third embodiment; and
• 9 schematically shows a view of the arrangement of the links of the cabin mounting according to FIG 8th from behind (a) and from the side (b).

In 1 is an exemplary and schematic isometric view of a driver's cab 1 of a commercial vehicle from the front and in 2 schematically shows an isometric view of the driver's cab 1 from behind. The driver's cab 1 is movably mounted on a vehicle frame 2 by a cab mount 5 . The vehicle frame 2 includes two side members 3, 4, which are arranged parallel to one another and extend in the vehicle longitudinal direction x. An arrow pointing in the longitudinal direction x of the vehicle represents a positive direction of travel FR. The commercial vehicle is here and preferably equipped with an electric motor drive.

The cab mounting 5 comprises at least four two-point links 6, 7, 8, 9 and four spring-damper modules 10. Two, in particular exactly two, of the two-point links 6, 7, 8, 9 extend essentially in the longitudinal direction x of the vehicle and are subsequently referred to as trailing links 6, 7 denoted. The at least two other two-point links 8, 9 extend essentially in the vehicle transverse direction y and are referred to below as wishbones 8, 9.

The spring-damper modules 10 arranged in the outer corner regions of the driver's cab 1 are articulated at one end to front brackets 11 and rear brackets 12 arranged on the vehicle frame 2 . The front consoles 11 and rear consoles 12 are firmly connected to the side members 3, 4 of the vehicle frame 2, for example by a screw connection. The front consoles 11 and rear consoles 12 are arranged at a distance from one another in the vehicle transverse direction y. With its other end, the spring-damper modules 10 are articulated on upper brackets 13, 14. The upper brackets 13, 14 are spaced apart from the brackets 11, 12 by the spring-damper modules 10 in the vehicle vertical direction z. The upper brackets 13, 14 are used to attach the driver's cab 1. The spring-damper modules 10 can each be designed as an air spring with an integrated damper.

The two trailing arms 6, 7 are designed to restrict the forward and backward movement of the driver's cab 1. The two trailing arms 6 , 7 are preferably arranged in the front area F of the driver's cab 1 . Each of the trailing arms 7 is articulated in a connection point 15 on the driver's cab side and a connection point 16 on the vehicle frame side on the driver's cab 1 and the vehicle frame 2 . A connection point 16 on the vehicle frame side is designed as a console 17, as in the exemplary embodiment according to FIGS 1 and 2 shown, which is attached to one of the longitudinal beams 3,4. The console 17 is arranged at a distance from the front console 11 in the longitudinal direction x of the vehicle. The upper consoles 13 in the front area F of the driver's cabin 1 can form the connection point 15 on the driver's cabin side.

Between the connection point 15 on the driver's cab and the connection point 16 on the vehicle frame in the front area F, one of the wishbones 8 extends in the vehicle transverse direction y. The other wishbone 9 is arranged in the rear area R of the driver's cab 1 . The wishbones 8, 9 are designed to restrict lateral movement of the driver's cab 1. The wishbone 8 is articulated at one end to the console 11 as a connection point 16 on the vehicle frame side. With the other end, the wishbone 8 is articulated on the opposite upper console 13 as a connection point 15 on the driver's cab. The wishbone 9 arranged in the rear area R of the driver's cab 1 is articulated at one end by a bracket 18 arranged on the side member 3 on the vehicle frame side and at its other end on the upper bracket 14 opposite the connecting element 18.

The two trailing arms 6, 7 and the at least two wishbones 8, 9 are mounted here and preferably by means of metal-rubber bearings in end bearing points 22 of the wishbones 8, 9. The wishbones 8, 9 have a substantially straight course. The end bearing points 22 of the wishbones 8, 9 (cf 3 ) are connected to each other by a connecting section 19, which according to the in 1 and 2 illustrated embodiment has a substantially straight course.

Starting from 1 and 2 will in the following 3 until 9 a cabin mounting 5 developed according to the invention is explained in more detail with reference to exemplary embodiments. The reference symbols are retained for identical or structurally identical components.

In 3 is a schematic isometric representation of an inventive arrangement of the two trailing arms 6, 7 and the at least two wishbones 8, 9 for the cabin mounting 5 according to 1 shown according to a first embodiment. For reasons of simplification, the representation of the other components according to the 1 and 2 waived. The representation according to 4 shows a schematic view of the arrangement of the two-point link 6, 7, 8, 9 of the cabin mounting 5 according to 3 from behind (a) and from the side (b). In 5 is a schematic view of the two-point link 6, 7, 8, 9 of the cabin mounting 5 according to 3 from behind (a) and from the side (b) with an alternative arrangement of the wishbones 8, 9 shown.

The trailing arms 6, 7 have bearing points 20 at their ends, in which the metal/rubber bearings are arranged. Lines of action 23, 24 run through the center of the outer bearing points 20 in the vehicle longitudinal direction x of the trailing arms 6, 7. Forces transmitted to the driver's cab 1 are absorbed along the lines of action 23, 24 of the trailing arms 6, 7.

The roll stiffness of the cab mounting 5 can be adjusted by setting up at least one of the two transverse links 8, 9, which extend essentially in the vehicle transverse direction y, in its respective connection point 15, 16 on the vehicle frame and driver's cab to set an offset D between the transverse links 8, 9 in the vehicle vertical direction z is. For this purpose, at least one of the two wishbones 8, 9, which extend essentially in the vehicle transverse direction y, is designed to be height-adjustable in its respective connection point 15, 16 on the vehicle frame side and driver's cabin side for setting the offset D between the wishbones 8, 9 in the vehicle vertical direction z by means of a height adjustment means.

In this case, the brackets 11, 13, 14, 18 can be designed as adjustment means for adjusting the at least one wishbone 8, 9. In this case, the brackets 11, 13, 14, 18 for fixing the wishbone 8, 9 can have a plurality of attachment points 29 which are offset one above the other in the vertical direction z of the vehicle. This adjustment option allows the roll stiffness to be adjusted to the respective requirements for roll stiffness and the associated driving comfort by the vertical displacement of a wishbone 8, 9 or both wishbones 8, 9 or their lines of action 25, 26.

Alternatively, the brackets 11 , 13 , 14 , 18 of one of the wishbones 8 , 9 designed as adjustment means can have a structural height that differs from the brackets 11 , 13 , 14 , 18 of the other wishbone 8 , 9 . An offset D can also be realized in this way. By using brackets 11, 13, 14, 18 of different heights, variant-specific roll stiffnesses can be set for a number of cabin variants.

In both cases of the configuration of the adjusting means, the trailing arms 6, 7 and the wishbones 8, 9 of the driver's cabs can be used across variants.

The wishbones 8, 9 have ends bearing points 21 and 22, in which metal-rubber bearings can also be arranged. In the transverse direction y of the vehicle, the lines of action 25 and 26 of the transverse links 8, 9 run through the center point of the bearing points 21 and 22 of the respective transverse link 8, 9. The transverse links 8, 9 are spaced apart from one another in a plane YZ spanned in the vehicle transverse direction y and the vehicle vertical direction z arranged. The arrangement of the wishbones 8, 9 corresponds to the plane YZ im spanned in the transverse direction y of the vehicle and in the vertical direction z of the vehicle Essentially a parallelogram. The wishbones 8, 9 are arranged one above the other in the YZ plane and have no or almost no distance from one another in the longitudinal direction x of the vehicle. The lines of action 25, 26 and imaginary connecting lines 28, which are shown as dash-dot lines, which connect the respective connection points 15, 15 of the wishbones 8, 9 to one another, indicate the parallelogram-shaped arrangement of the wishbones 8, 9.

The wishbones 8, 9 can be positioned downstream of the trailing arms 6, 7 as seen in the longitudinal direction x of the vehicle. In the illustrated embodiment, the wishbones 8, 9 are arranged in the rear region R of the driver's cab 1.

The lines of action 23, 24 running through the respective connection point 15 on the vehicle frame side and connection point 16 on the driver's cab side of the trailing arms 6, 7 run essentially parallel to one another. According to the illustrated embodiment, the trailing arms 6, 7 extend essentially parallel to the longitudinal direction x of the vehicle. The lines of action 23, 24 of the trailing arms 6, 7 run essentially parallel to the longitudinal direction x of the vehicle.

The wishbones 8 , 9 are positioned essentially at the same distance from the rear area R of the driver's cab 1 as viewed in the longitudinal direction x of the vehicle. According to the exemplary embodiment, the arrangement of the wishbones 8, 9 is selected by means of a height adjustment means in such a way that the lines of action 25, 26 have an offset D with an amount greater than zero. If the offset D is set to be greater than zero, the position of the lines of action 25, 26 of the wishbones 8, 9 in the vehicle vertical direction z differs from one another. The lines of action 25, 26 of the wishbones 8, 9 have a purely vertical offset D. In addition, the lines of action 25, 26 of the wishbones 8, 9 do not lie one above the other when viewed in the direction of the lines of action 23, 24 of the trailing arms 6, 7, i.e. they do not coincide in a plane YZ spanned in the vehicle transverse direction y and vehicle vertical direction z, or are not congruent.

The position of the roll axis RA corresponds to a parallel to the lines of action 23, 24 of the trailing arms 6, 7 in the plane XZ. The roll axis RA runs parallel to the lines of action 23, 24 of the trailing arms 6, 7 between the lines of action 25, 26 of the wishbones 8, 9.

According to this embodiment, in which the amount of offset D is greater than zero, as in FIG 3 , 4a , 4b , 5a , and 5b shown, the roll stiffness results from the stiffness of the cabin 1, the stiffness of the wishbones 8, 9, the stiffness of the spring-damper modules 10 and the stiffness of the frame-side wishbone connection. Because of the parallelogram-shaped arrangement of the two wishbones 8, 9, the stiffness of the trailing arms 6, 7 has little or no effect on the roll stiffness.

The representation according to 5a and 5b differs from the exemplary embodiment illustrated above 4a and 4b by the positioning of the wishbones 8, 9 based on the arrangement of the trailing arms 6.7.

The wishbones 8, 9 are positioned upstream of the trailing arms 6, 7 as seen in the longitudinal direction x of the vehicle. Im in the 4a , 4b illustrated embodiment, the wishbones 8, 9 in the front area F of the driver's cab 1 in front of the trailing arms 6, 7 are arranged.

A further alternative positioning of the wishbones 8, 9, which is not shown, provides for an arrangement in the area of the trailing arms 6, 7. In this embodiment, the two wishbones 8, 9 can be positioned between the respective connection points 15, 16 of the trailing arms 6, 7 on the vehicle frame side and on the driver's cab side, viewed in the longitudinal direction x of the vehicle.

An arrangement of the wishbones 8, 9 in the central region of the driver's cab 1 can be advantageous, with a positioning of the wishbones 8, 9 arranged in the manner of a parallelogram, seen in the vehicle longitudinal direction x, essentially at the level of the center of gravity of the driver's cab 1, would be advantageous.

6 shows a schematic isometric representation of an arrangement of five two-point links 6, 7, 8, 9, 30 of the cabin mounting 5 according to a second embodiment. According to this second embodiment, a further, third, wishbone 30 is arranged in the area of the trailing arms 6 , 7 , here in the front area F of the driver's cab 1 . The representation in 7 shows a schematic view of the arrangement of the two-point link 6, 7, 8, 9, 30 of the cabin mounting 5 according to 6 from behind (a) and from the side (b).

The cab mounting 5 comprises five two-point links, two trailing links 6, 7 and three transverse links 8, 9 and 30. In the exemplary embodiment shown, the additional transverse link 30 is positioned in front of the two trailing links 6, 7 as viewed in the direction of travel FR. An arrangement in which the wishbones 8, 9 are arranged in the area of the trailing arms 6, 7, while the additional wishbone 30 is arranged in the rear area R of the driver's cab 1 is also conceivable.

Like the two wishbones 8 , 9 , the third wishbone 30 is articulated with one end at the connection point 15 on the driver's cab side and at a connection point 16 on the vehicle frame side on the driver's cab 1 and the vehicle frame 2 . The transverse link 30 has a line of action 31 running in the vehicle transverse direction y, which runs through the center point of the bearing points 21 of the transverse link 30 . The arrangement of the third wishbone 30 essentially at the same level as the two trailing links 6, 7 is merely a preferred embodiment. The third wishbone 30 could also be arranged essentially at the same level as the wishbone 8 or wishbone 9.

The design of the parallelogram-like arrangement of the wishbones 8, 9 according to the invention with the additional wishbone 30 arranged opposite in the vehicle longitudinal direction x can be advantageous when using metal-rubber bearings with soft rubber elements in the bearing points 20 of the trailing arms 6, 7, which thus have a lower longitudinal rigidity be. In the case of a lateral force acting in the center of gravity of the driver's cab 1, in the variant described above with exactly two trailing arms 6, 7 and exactly two wishbones 8, 9, high longitudinal forces are also generated on the left and right side of the driver's cab 1 due to the force and moment balance each opposite, caused in the trailing arms 6, 7. In combination with the soft metal-rubber bearings, the driver's cab 1 yaws when it rolls, which has an unfavorable effect on the driver's perception. Furthermore, such soft metal-rubber bearings are always in the attack and cannot dampen longitudinal impacts as desired, for example when cornering.

The additional wishbone 30 stabilizes the driver's cab 1, among other things, when cornering, in that the additional wishbone 30 prevents yawing and relieves the load on the trailing arms 6, 7. It is advantageous here if the additional transverse link 30 has essentially the same length as the two transverse links 8, 9 arranged opposite one another. In addition, the additional wishbone 30 should be arranged essentially parallel to the other two wishbones 8, 9, as shown in FIG 7b shown. This makes it possible to avoid tension in the wishbones 8, 9, 30 and the trailing arms 6, 7 in relation to one another as soon as the driver's cab 1 compresses or rebounds.

In 8th is a schematic isometric representation of an arrangement of six two-point links 6, 7, 8, 9, 30, 32, two trailing links 6, 7 and four transverse links 8, 9, 30, 32, the cabin mounting 5 according to a third embodiment. The representation in 9 shows a schematic view of the arrangement of the two-point link 6, 7, 8, 9, 30, 32 according to the cabin mounting 8th from behind (a) and from the side (b). The embodiment according to 8th and 9 differs from the embodiment described above in that a pair of wishbones 8, 9 or 30, 32 are arranged both in the front area F and in the rear area R of the driver's cab 1, the arrangement of which is different in relation to the vehicle transverse direction y and the vehicle vertical direction z spanned plane YZ essentially corresponds to a parallelogram. For the arrangement of the respective pair of wishbones 8, 9 or 30, 32, what was said above for the other two embodiments applies accordingly.

The sixth transverse link 32 has a line of action 33 running in the vehicle transverse direction y, which runs through the center point of the bearing points 22 of the transverse link 32 . As shown in the illustration in 9a As can be seen, the wishbones 8, 9 or 30, 32 arranged in pairs can have a transverse offset in the vehicle transverse direction y with respect to one another. The possible transverse offset is indicated by the slightly different position of the imaginary connecting lines 28 of the wishbones 8, 9 from the imaginary connecting lines 28' of the wishbones 30, 32. A prerequisite for the transverse offset between the two wishbones 8, 9 and/or 30, 32 is that they are essentially of the same length and are arranged essentially parallel to one another. As a result, tension in the two wishbones 8, 9 or 30, 32 and the trailing arms 6, 7 relative to one another can be avoided when the driver's cab compresses and rebounds. Under the conditions described above, a transverse offset can be provided as an alternative or in addition to the two wishbones 8, 9.

The additional wishbone 32, which forms a substantially second parallelogram-shaped arrangement with the wishbone 30, is compared to the embodiment according to FIG 6 achieved with a total of three wishbones 8, 9, 30, a further increase in roll stiffness.

The at least two wishbones 8, 9, 30, 32 are connected to one another by a curved or cranked connecting section 19 or a connecting section 19 which runs essentially straight and which connects the bearing points 21, 22 to one another. As a result, a more flexible adaptation to the given installation space is possible. The shape of the connecting section 19 has no influence on the position of the respective line of action 25, 26, 31, 33 of the wishbones 8, 9, 30, 32.

Reference List

1

driver's cabin

2

vehicle frame

3

side members

4

side members

5

cabin storage

6

trailing arm

7

trailing arm

8th

wishbone

9

wishbone

10

spring damper module

11

console

12

console

13

console

14

console

15

connection point

16

connection point

17

console

18

console

19

connection section

20

storage place

21

storage place

22

storage place

23

line of action

24

line of action

25

line of action

26

line of action

28

connecting line

28`

connecting line

29

attachment point

30

wishbone

31

line of action

32

wishbone

33

line of action

D

offset

f

front area

FR

driving direction

R

rear area

RA

roll axis

x

vehicle longitudinal direction

y

vehicle transverse direction

e.g

vehicle elevation

XZ

Plane in vehicle longitudinal direction and vehicle vertical direction

Y Z

Level in vehicle transverse direction and vehicle vertical direction

QUOTES INCLUDED IN DESCRIPTION

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

Patent Literature Cited

• DE 102013000362 B4 [0003]

Claims (16)

Cab mounting (5) for a commercial vehicle, comprising at least four two-point links (6, 7, 8, 9, 30, 32) and four spring-damper modules (10), by means of which a driver's cab (1) can be moved on a vehicle frame (2) is mounted, wherein the two-point links (6, 7, 8, 9, 30, 32) are each articulated in a vehicle frame-side and a driver's cab-side connection point (15, 16) on the driver's cab (1) and the vehicle frame (2), with two of the Two-point links (6, 7, 8, 9, 30, 32) extend as longitudinal links (6, 7) essentially in the longitudinal direction (x) of the vehicle and are arranged at a distance from one another in the transverse direction (y) of the vehicle and for restricting the forward and backward movement of the driver's cab ( 1) are designed, characterized in that the at least two other two-point links (6, 7, 8, 9, 30, 32) extend as wishbones (8, 9, 30, 32) essentially in the vehicle transverse direction (y), whose lines of action (25, 26, 31, 33) running along a respective connection point (15, 16) of the wishbones (8, 9, 30, 32) on the vehicle frame side and on the driver's cab side, essentially parallel to one another, with at least one of the wishbones (8, 9, 30, 32) extending essentially in the transverse direction (y) of the vehicle in its respective connection point (15, 16) on the vehicle frame side and on the driver's cab side for setting an offset (D) between the lines of action (25, 26, 31), 33) the wishbone (8, 9, 30, 32) is designed to be adjustable by means of an adjustment means, the arrangement of the at least two wishbones (8, 9, 30, 32) relative to one in the vehicle transverse direction (y) and in the vehicle vertical direction (z) spanned plane (YZ) essentially corresponds to a parallelogram. Cabin bearing (5) after claim 1 , characterized in that for the height adjustment of the at least one wishbone (8, 9, 30, 32), brackets (11, 13, 14, 18) are arranged as adjustment means on the vehicle frame (2) and the driver's cab (1), which are used to fix the Wishbone (8, 9, 30, 32) have a plurality of attachment points (29) arranged offset one above the other in the vehicle vertical direction (z). Cabin bearing (5) after claim 1 , characterized in that the at least two wishbones (8, 9, 30, 32) are arranged on the vehicle frame (2) and the driver's cab (1) by means of brackets (11, 13, 14, 18) as adjustment means for the offset (D), wherein the brackets (11, 13, 14, 18) of one of the wishbones (8, 9, 30, 32) one of the brackets (11, 13, 14, 18) of the at least one further wishbone (8, 9, 30, 32 ) have a different overall height. Cabin mounting (5) according to one of the preceding claims, characterized in that the at least two wishbones (8, 9, 30, 32) have bearing points (21, 22) at the ends which are connected by a curved connecting section (19) or a substantially straight connecting section (19) are interconnected. Cabin mounting (5) according to one of the preceding claims, characterized in that the at least two transverse links (8, 9, 30, 32) have essentially the same length. Cabin mounting (5) according to one of the preceding claims, characterized in that the at least two wishbones (8, 9, 30, 32) have a transverse offset in relation to a plane (XZ) spanned in the vehicle longitudinal direction (x) and vehicle vertical direction (z). Cabin mounting (5) according to one of the preceding claims, characterized in that with a set offset (D) not equal to zero, the position of the lines of action (25, 26, 31, 33) of the at least two transverse links (8, 9, 30, 32) in Vehicle vertical direction (z) deviates from one another, with the lines of action (25, 26, 31, 33) of the at least two wishbones (8, 9, 30, 32) in the direction of the lines of action (23, 24) of the trailing arms (6, 7) deviating an im Essentially have purely vertical offset. Cabin mounting according to one of the preceding claims, characterized in that the roll axis (RA) runs parallel to the lines of action (23, 24) of the trailing arms (6, 7) running in a plane (XZ) spanned in the vehicle longitudinal direction (x) and vehicle vertical direction (z). get lost. Cabin mounting according to one of the preceding claims, characterized in that the at least two transverse links (8, 9, 30, 32), the arrangement of which essentially corresponds to a parallelogram, are arranged in front of, behind or in the longitudinal direction (x) of the longitudinal links (6, 7) in the vehicle Area of trailing arms (6, 7) are arranged. Cabin mounting according to one of the preceding claims, characterized in that with more than two transverse links (8, 9, 30, 32) the arrangement of the one further transverse link (8, 9, 30, 32) or the two further transverse links (8, 9, 30, 32), the arrangement of which essentially corresponds to a parallelogram in relation to the plane (YZ) spanned in the vehicle transverse direction (y) and in the vehicle vertical direction (z), a significant distance from the other two wishbones (8, 9, 30, 32) has d. Cabin bearing (5) after claim 10 , characterized in that the significant Distance corresponds to at least one third of the length of the trailing arms (6, 7). Cab mounting according to one of the preceding claims, characterized in that at least two transverse links (8, 9, 30, 32) are arranged in the central area of the driver's cab (1), the positioning of the two parallelogram-like arranged transverse links (8, 9, 30, 32 ) seen in the longitudinal direction (x) of the vehicle essentially at the level of the center of gravity of the driver's cab (1). Cab mounting according to one of the preceding claims, characterized in that the two transverse links (8, 9), whose arrangement in the plane (YZ) essentially corresponds to a parallelogram, at least one further transverse link (30) on the opposite side of the driver's cab (1) assigned. Cabin storage according to one of Claims 1 until 13 , characterized in that the two wishbones (8, 9), whose arrangement in the plane (YZ) essentially corresponds to a parallelogram, are assigned two further wishbones (30, 32) on the opposite side of the driver's cab (1). cabin storage after Claim 14 , characterized in that the arrangement of the two further wishbones (30, 32) in relation to the vehicle transverse direction (y) and vehicle vertical direction (z) spanned plane (YZ) essentially corresponds to a parallelogram. Commercial vehicle, in particular with an electric motor drive, comprising a driver's cab (1) movably mounted on a vehicle frame (2) by a cab mount (5), characterized in that the cab mount (5) according to one of Claims 1 until 15 is executed.

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