阅读说明：本技术 具有空气弹簧装置的空气弹簧系统和空气弹簧系统的组装方法 (Air spring system with air spring device and method for assembling air spring system ) 是由 斯特凡·法思 斯特凡·瓦迈耶 于 2018-05-02 设计创作，主要内容包括：本发明涉及一种特别是用于商用车辆的空气弹簧系统(1),包括空气弹簧装置(2),所述空气弹簧装置(2)能够布置在连杆(3)上的接口区域中,所述空气弹簧系统(1)被设计成使得,在所述空气弹簧装置锁定的情况下,接合元件(53)能够被插入到接收区域(51)中,并且通过沿着偏移方向的偏移运动,所述接合元件能够从所述接收区域转移到互锁连接区域,其中所述接合元件(53)沿着偏离所述偏移方向的互锁连接方向与互锁连接元件以互锁方式相互作用。(The invention relates to an air spring system (1), in particular for a utility vehicle, comprising an air spring device (2), wherein the air spring device (2) can be arranged in an interface region on a connecting rod (3), wherein the air spring system (1) is designed such that, with the air spring device locked, an engagement element (53) can be inserted into a receiving region (51) and can be transferred from the receiving region to an interlocking connection region by means of an offset movement in an offset direction, wherein the engagement element (53) interacts with the interlocking connection element in an interlocking manner in an interlocking connection direction offset from the offset direction.)

1. An air spring system (1), in particular for a commercial vehicle,

having an air spring device (2), wherein the air spring device (2) can be arranged in an interface region (A) on a connecting rod (3),

the air spring system (1) is designed such that, with the air spring assembly (2) locked, an engagement element (53) can be introduced into a receiving region (51) and, by means of an offset movement along an offset direction (VR), the engagement element (53) can be transferred from the receiving region (51) into a form-fitting region (63) in which the engagement element (53) interacts with the form-fitting element in a form-fitting manner along a form-fitting direction (FR) that is different from the offset direction (VR).

2. Air spring system (1) according to the preceding claim, comprising a fastening mechanism which, in the mounted state, resists a movement opposite to the offset direction (VR).

3. Air spring system (1) according to one of the preceding claims, the engagement element (53) interacting with the form-locking element in a friction-locking manner in a direction parallel to the offset direction (VR) in the mounted state.

4. Air spring system (1) according to one of the preceding claims, the offset movement being a translational and/or rotational movement.

5. Air spring system (1) according to one of the preceding claims, the connecting rod (3) having a recess for introducing the coupling element (53) in order to form a receiving region (51).

6. Air spring system (1) according to one of the preceding claims, the engagement element (53), in particular the portion of the engagement element (53) which engages behind the form-locking element, being inclined at an angle (a) with respect to a plane perpendicular to the fitting direction (AR).

7. Air spring system (1) according to one of the preceding claims, a further interface region (B) being provided in addition to the interface region (a).

8. Air spring system (1) according to one of the preceding claims, the coupling element (53) being part of the air spring device (2) and the form-locking element being part of the connecting rod (3).

9. Air spring system (1) according to one of the preceding claims, the engagement element (53) engaging through the connecting rod (3) in the mounted state.

10. Air spring system (1) according to one of the preceding claims, the air spring device (2) being arrangeable on an upper side (21) of the connecting rod (3), the upper side (21) facing the chassis.

11. Air spring system (1) according to one of the preceding claims, provided with at least one locking aid for indicating the installation status of the air spring device.

12. Air spring system (1) according to one of the preceding claims, the air spring system (1) having an additional receptacle which, in the mounted state, is arranged on an underside (22) of the connecting rod (3), the underside (22) facing away from the chassis, the additional receptacle having a recess in which, in the mounted state of the air spring system (1), the engaging element (53) is arranged at least partially.

13. Air spring system (1) according to claim 8a, the air spring system (1) having a fluid line (9) for exchanging gas between the air spring device (2) and the additional reservoir, the fluid line (9) being arranged between two engagement elements (53) in the mounted state.

14. Air spring system (1), in particular according to one of the preceding claims,

having an additional container which can be arranged in an interface region on the connecting rod (3),

the additional container is designed such that, with the additional container locked, an engaging element (53) can be introduced into a receiving region (51) and, by means of a displacement movement along a displacement direction (VR), the engaging element (53) can be transferred from the receiving region (51) into a form-locking region (63) in which the engaging element (53) interacts with the form-locking element in a form-locking manner along a form-locking direction (FR) which is different from the displacement direction (VR).

15. An installation method of an air spring system (1), in particular of an air spring system (1) according to one of the preceding claims, comprising the steps of:

-fitting the air spring arrangement (2) by a fitting movement in a fitting direction (AR), receiving the engaging element (53) in the receiving region (51), and

-transferring the engaging elements (53) from the receiving area (51) into the form-locking area (63) by a shifting movement along a shifting direction (VR) and forming a form-locking connection along a form-locking direction (FR) different from the shifting direction (VR).

Technical Field

The invention relates to an air spring system having an air spring device and a method for mounting an air spring system.

Background

Air spring systems are well known in the art. They are often used to suspend axles or to change the ride height position of a vehicle. The conventional components of an air spring system are a piston and an air bellows, which can be displaced relative to one another. Here, the air bellows rolls on the outer surface of the piston under compression or rebound. For this purpose, the air bellows is preferably made of an elastic material, by means of which a folding movement can be induced during rolling. Furthermore, a damping action is produced due to the fact that the fluid (in particular air) flows back and forth through the constricted cross section between the working space provided by the air bellows and the piston and the chamber arranged in the piston. Due to the constricted cross section and the associated friction, the induced vibrations are damped.

The damping behavior of such an air spring arrangement depends on the available air volume. Therefore, in order to increase this volume, it is known to connect the workspace to an additional volume in the form of a separate additional container. The prior art (for example, DE 102004011466 a1) already discloses an air spring system whose piston is connected to an additional volume reservoir via a connecting line.

However, the installation and removal of the air spring system is complicated and time consuming. Furthermore, fixing elements are required which fill the installation space and may limit the size of the additional container.

Disclosure of Invention

It is therefore an object of the present invention to provide an air spring system that can be installed or removed in an uncomplicated manner.

This object is achieved by an air spring system according to claim 1 and a method for mounting an air spring system according to claim 15. Further advantages and features of the invention emerge from the dependent claims, the description and the drawings.

According to the invention, an air spring system, in particular for commercial vehicles, is provided, having an air spring device which can be arranged in an interface region on a connecting rod, the air spring device, in particular the interface region, being designed such that, with the air spring device locked, an engagement element can be introduced into a receiving region and, by means of a displacement movement in a direction of displacement, can be transferred from the receiving region into a form-locking region in which the engagement element interacts with the form-locking element in a form-locking manner in a direction of shape locking which is different from the direction of displacement. In contrast to the connection mechanisms known from the prior art, it is possible with the air spring system to attach the air spring device to the connecting rod only by means of a mounting movement and an offset movement. In particular, it is provided that the engagement element engages behind the form-locking element, so that the attachment of the air spring arrangement to the connecting rod is ensured. This simplifies the mounting and dismounting of the air spring device, so that maintenance and repair costs can also be advantageously reduced. In particular, an air spring system is provided for the axle, a link can be pivotably arranged on the frame and is used for mounting the axle. For example, an air spring device disposed between the connecting rod and the vehicle frame includes a piston and an air bellows. The air bellows preferably has an elastically deformable cylindrical housing which is fastened on one side to the piston and on the other side to the vehicle frame, for example by means of a clamping ring. In the case of a rebound movement, the size of the working volume enclosed by the piston and the air bellows and in which the fluid (in particular air) collects is reduced. Furthermore, air can escape from the working volume through the cross section of the piston, as a result of which a damping effect of the air spring and thus of the pivoting movement of the connecting rod element and the mounted axle can be achieved. Furthermore, it is preferably provided that the receiving region and the form-locking region are arranged in the interface region. For example, the receiving area directly adjoins the form-locking area. In order to transfer the joining element into the form-locking region, therefore, advantageously only a relatively small deflection movement is required. The interface region is in particular fixed by the region in which the air spring device (in particular the piston) rests on the connecting rod. Furthermore, a guide channel is preferably provided, which fixes the offset direction and along which a part of the guide element is displaced in the event of a transfer of the joining element into the form-locking region. Furthermore, it is preferably provided that the air spring system is designed such that the air spring device can be reversibly attached to the connecting rod, i.e. the air spring device can be released again from the connecting rod and can be reattached. In order to release it, the offset movement and the fitting movement take place in the opposite order and in each case in the opposite direction. Furthermore, the mounting direction is different from the offset direction. The offset direction is particularly preferably substantially perpendicular to the mounting direction. Furthermore, it is preferably provided that the extension (measured in the assembly direction) of the joining element is 1.1 to 3 times, preferably 1.05 to 2.1 times and particularly preferably 1 to 1.6 times the thickness (measured in the same direction) of the connecting rod in the interface region. It has been found that for a ratio between 1 and 1.6 such an engaging element is sufficiently stable to firstly withstand the expected loads during operation and secondly to occupy as little mounting space as possible at the underside of the chassis, which faces away from the chassis, which has a beneficial effect on the degree of freedom created during the design of the additional container to be arranged therein. Furthermore, it is preferably provided that a single engaging element or a plurality of engaging elements are provided. By means of a plurality of joining elements, a plurality of attachments can be achieved in the interface region, whereby a more stable attachment can advantageously be achieved.

According to another embodiment of the invention, a fastening mechanism is provided which in the mounted state resists movement opposite to the direction of deflection. This advantageously prevents the engaging element from being accidentally removed again from the form-locking region during operation. For example, the fastening means have a pin-like fastening element arranged at an end side of the air spring device, which end side faces the chassis. It is also conceivable that the fastening mechanism comprises a spring element which is prestressed such that a restoring force opposes a movement opposite to the direction of deflection. Furthermore, it is conceivable for the guide channel to have, for example, on its inner side, a latching element or a latching contour with which the part of the coupling element that engages through the guide channel interacts when the coupling element is in its final position in the form-locking region. Furthermore, it is conceivable to utilize the rotational effect on the air spring device by adjusting the curl or the substructure of the air spring housing in a targeted manner in order to achieve a rotation of the air spring device under pressure load, for example a rotation to the right. Thus, a type of self-locking action can advantageously be achieved. It is particularly preferably provided that the engagement element is a hook element, which can be engaged with the form-locking region. For example, the form-locking region is wedge-shaped, as seen in the direction of displacement, so that the hook element grips the widened form-locking region in the event of a movement in the direction of circulation or the direction of displacement. Furthermore, it is conceivable that one end of the guide channel forms a stop for the engaging element.

Preferably, it is provided that the coupling element interacts with the form-locking element in a friction-locking manner in a direction parallel to the offset direction in the installed state, in particular in the installed but unloaded state of the air spring. Thus, undesired movement opposite to the direction of deflection can be counteracted. For this purpose, for example, the surface of the form-locking means is structured or roughened. In the mounted state, the engaging element is preferably only secured in a friction-locking manner against a movement opposite to the offset direction in a direction parallel to the offset direction. This may mean, in particular, that no form-locking fastening means (for dismounting purposes) against deflection opposite to the direction of deflection is provided. This results in an air spring system which can be produced particularly simply and therefore cost-effectively.

In a further embodiment of the invention, it is provided that the offset movement is a translational and/or rotational movement. The fitting movement is preferably a translational movement and the offset movement is a rotational movement. Furthermore, it is conceivable that the offset movement is a translational movement and a rotational movement. By means of the relatively complex offset movement path, the probability of the engaging element accidentally leaving the form-locking region again during operation is advantageously reduced. For this purpose, the guide channel preferably has a slotted rail-like configuration. It is conceivable here that the translational movement and the rotational movement follow each other. It is particularly preferably provided that the interface region is configured as a bayonet closure.

It is advantageously provided that, for forming the receiving region, the connecting rod has a recess for introducing the joining element. In particular, the recess defines a receiving area and preferably has a complementary configuration with respect to the shape of the engaging element in a cross section perpendicular with respect to the fitting movement. The engaging element and the receiving region are preferably configured in a key/lock principle, so that accidental attachment of an unsuitable air spring device to the connecting rod can advantageously be prevented. It is also conceivable that the receiving region is larger in cross section than the area allocated to the engaging element in order to enable simple insertion. Furthermore, it is preferably provided that the coupling element is arranged on an end side of the air spring device.

According to a further embodiment of the invention, it is provided that the engaging element, in particular the part of the engaging element which engages behind the form-locking element, is inclined at an angle to a plane perpendicular to the assembly direction. It is thus possible to fasten the air spring device to the connecting rod in a particularly simple manner. In particular, if the air spring system is used on a commercial vehicle, expensive additional fastening devices such as screws can be dispensed with due to the type of fastening. The angle preferably takes a value between 1.5 ° and 4.5 °, preferably a value between 0.8 ° and 2.2 °, particularly preferably a value between 1.3 ° and 1.8 °. With a relatively small inclination of this type between 1.3 ° and 1.8 °, tolerance compensation and a sufficient clamping action can advantageously be ensured. The part of the engaging element inclined at an angle with respect to a plane perpendicular to the fitting direction preferably constitutes the (in particular, distal) end of the engaging element in order to simplify the mounting.

Furthermore, it is preferably provided that a further or second interface region is provided in addition to the interface region. Thus, the air spring device can be selectively attached to the connecting rod in two different areas offset with respect to each other. In particular, the choice depends on the vehicle side to which the link is attached. By means of the further interface region, connecting rods for the right-hand and left-hand vehicle side can be manufactured on a common production line. In particular, it is preferably provided that the interface region and the further interface region are offset relative to one another in a direction perpendicular to the direction of travel, i.e. in the transverse direction of the vehicle. It is conceivable here that the interface region and the further interface region at least partially overlap.

In a preferred embodiment of the invention, it is provided that the coupling element is part of an air spring device and the form-locking element is part of a connecting rod. This embodiment has proven to be advantageous because with the configuration of a plurality of interface regions, more cutouts can be made in the connecting rod and one set of engagement elements can be made on the air spring device, thus reducing the complexity of material and manufacture compared to an air spring system in which a plurality of sets of engagement elements are arranged on the connecting rod. Furthermore, it is preferably provided that the engagement element is arranged on an end side of the air spring device, in particular on an end side of the piston, which end side faces the connecting rod in the mounted state.

It is advantageously provided that, in the installed state, the coupling element engages through the connecting rod. Thus, it is advantageously prevented that the engaging element has to engage around the connecting rod in order to engage behind the connecting rod. As a result, an air spring system which is particularly economical in terms of installation space can thereby be provided.

Furthermore, it is preferably provided that the air spring device can be arranged on an upper side of the connecting rod, which upper side faces the chassis. In particular, the air spring device is attached directly to the connecting rod or to the upper side. Therefore, the engaging element can have as small a size as possible in a direction parallel to the offset direction.

It is advantageously provided that at least one locking aid is provided for indicating the installation state of the air spring arrangement. By means of the locking aid, it is possible in a simple manner to detect from the outside whether the joining element is arranged in the form-locking region. This is advantageous, in particular, when the engaging element and its position are hidden and thus the arrangement state of the engaging element cannot be directly seen clearly by the user. For example, the locking aid is a marking on the connecting rod and/or on the air spring device, in particular on its outer side, on the basis of the orientation of which a technician or vehicle driver can detect whether the coupling element is arranged in the form-locking region. For example, markings on the outside of the connecting rod and the air spring device are conceivable, which are arranged in alignment relative to one another in the mounted state of the air spring device. Alternatively, it is also conceivable for the locking aid to emit an acoustic or visual light signal when the engaging element is arranged in the form-locking region.

It is advantageously provided that the air spring system has an additional receptacle which, in the installed state, is arranged or can be arranged on the lower side of the connecting rod, which lower side faces away from the chassis, the additional receptacle having a recess in which the engaging element is arranged at least partially in the installed state of the air spring system. In particular, it is provided that, in the mounted state, the recess extends uniformly with respect to the receiving region and the form-locking region, when viewed in a direction parallel to the form-locking direction. The air spring device can therefore advantageously be removed from the connecting rod without the need for preliminary release of the additional container. The air spring device and the additional container are preferably arranged one above the other in a direction parallel to the form-locking direction.

In a further embodiment of the invention, it is provided that the air spring system has a fluid line for exchanging gas between the air spring device and the additional container, which fluid line is preferably arranged between the two engagement elements in the installed state. Preferably, it is provided that, in the installed state, the fluid line is arranged centrally on the end side facing the connecting rod. Furthermore, it is provided that the end of the engaging element projects radially outward. Furthermore, the engaging element is preferably arranged at the outermost third, preferably at the outermost quarter or particularly preferably at the outermost fifth of the end side of the air spring device, in particular of the piston, as viewed in the radial direction.

Preferably, it is provided that the extent (measured in the offset direction) of the joining element is smaller than the extent (measured in the offset direction) of the form-locking region. This can advantageously be achieved in that the engaging elements do not directly leave the form-locking region in the event of a movement of the engaging elements counter to the direction of deflection.

Furthermore, according to the invention, an air spring system, in particular an air spring system according to the invention as described above, is provided, which has an additional container that can be arranged in the interface region on the connecting rod, which additional container is designed such that, with the additional container locked, the coupling element can be introduced into the receiving region and, by means of a displacement movement in the direction of the displacement, the coupling element can be transferred from the receiving region into a form-locking region in which the coupling element interacts with the form-locking element in a form-locking manner in a form-locking direction different from the direction of the displacement. All aspects of the air spring system according to the invention with an air spring assembly and its advantages can likewise be transferred to the air spring system according to the invention with an additional reservoir and vice versa.

Another subject of the invention is a method for mounting an air spring system, in particular an air spring system according to any one of the preceding claims, comprising the following steps:

-fitting the air spring device by a fitting movement in a fitting direction, receiving the engaging element in the receiving region, and

the engaging elements are transferred from the receiving region into the form-locking region by a displacement movement in a displacement direction and form a form-locking connection in a form-locking direction which is different from the displacement direction. All aspects of the air spring system according to the invention with an air spring assembly and the advantages thereof can likewise be transferred to the installation method of the air spring system according to the invention and vice versa.

The following description of preferred embodiments of the subject matter according to the present invention yields further advantages and features with reference to the drawings. Here, the respective features of the respective embodiments may be combined with each other within the scope of the present invention.

Drawings

In the drawings:

fig. 1a and 1b illustrate an air spring system according to a preferred embodiment of the present invention, fig. 2a and 2b illustrate plan views of an air spring assembly and a connecting rod of the air spring system of fig. 1,

FIG. 3 shows a detail of the air spring arrangement of FIG. 2a, an

FIG. 4 illustrates a schematic view of a portion of a method of installing an air spring system in accordance with an exemplary embodiment of the present invention.

Detailed Description

Fig. 1a and 1b show an air spring system 1 according to a first preferred embodiment of the present invention. In particular, this is an air spring system 1 which is provided for wheel axles suspended on commercial vehicles (e.g. semitrailers). The main components of an air spring system 1 of this type are the connecting rod 3, the additional reservoir and the air spring device 2. The link 3 is preferably attached to the vehicle body, for example at one end thereof, so that it can pivot about a pivot axis and support the wheel axle. In order to dampen the translational movement, e.g. up and down movement, of the wheel axle during operation, the connecting rod 3 is attached to another region of the vehicle body, which is spaced apart from the pivot axis, by the air spring device 2. In addition to the suspension axle, the air spring system 1 is also used to change the ride height position of the vehicle. Here, the main components of the air spring device 2 are preferably a piston 12 and an air bellows 11, the air bellows 11 and the piston 12 being displaceable relative to one another. Here, the air bellows 11 rolls on the outer surface of the piston 12 under compression and rebound. For this purpose, the air bellows 11 is preferably made of an elastic material, by means of which a folding movement can be induced during rolling. Furthermore, a damping action is generated due to the fact that the fluid (in particular air) flows back and forth through the constricted cross section between the working space provided by the air bellows and the piston and the chamber arranged in the piston. Due to the constricted cross section and the associated friction, the induced vibrations are damped.

The damping behavior of an air spring assembly 2 of this type is dependent on the available air volume. In order to increase this volume, it is therefore known to connect the workspace to an additional container (not shown) providing an additional volume. In particular, in the installed state, the additional reservoir and the air spring device 2 are fluidically connected by means of a fluid line 9. In particular, it is provided that the air spring device 2 is attached to an upper side 21 of the connecting rod 3, which upper side 21 faces the chassis, while the additional container is attached to a lower side 22 of the connecting rod 3, which lower side 22 faces away from the chassis. In order to avoid a fastening element that fills the installation space, it is provided, in particular, that the air spring system 1 has a coupling element 53 in the interface region a, in which the air spring arrangement 2 is attached to the connecting rod 3, the coupling element 53 interacting with a positive locking element (positive locking element) in a positive locking manner. In the exemplary embodiment shown, the engagement element 53 is a hook element arranged on an end side of the air spring arrangement 2 (in particular the piston 12), which end side faces the connecting rod 3 in the mounted state. Furthermore, the interface region a is configured such that the engaging element 53 is received by the receiving region 51 as a result of a fitting movement (shown in fig. 1 a) in the fitting direction AR. The engaging elements 53 preferably engage through the receiving areas 51 after the assembly movement has ended. Furthermore, the interface region a is designed such that the engaging elements 53 are transferred into the form-locking region 63 after the fitting movement by a displacement movement in a displacement direction VR different from the fitting direction AR. In the form-locking region 63, the joining element 53 interacts with the form-locking element along the form-locking direction FR. In the example shown, the region of the connecting rod 3 adjoining the receiving region 51 forms a form-locking element 63. In the installed state shown in fig. 1b, the hook element or engagement element 53 is therefore engaged behind the connecting rod 3 in a partial region and is therefore fixed to the connecting rod 3. In particular, it is provided that the fitting direction AR is substantially parallel or antiparallel to the form-locking direction FR. The guide channel 61 is provided for transferring the engaging element 53 into the form-locking area 63, along which guide channel 61 the part of the hook element engaging through the link 3 is guided during the transfer and arranged in the mounted state. In particular, it is provided that the air spring arrangement 2 (in particular the piston 12 of the air spring arrangement 2) is rotated in order to be transferred into the form-locking region 63. In order to avoid counter-rotation of the engaging element, a pin-like fastening element 15 (e.g. a standard support bolt) is preferably provided, which is attached at an end side of the air spring device 2, which end side faces the chassis in the mounted state.

Fig. 2a shows a plan view of the air spring arrangement 2 in the installed state, facing the end face of the connecting rod 3. Here, in particular, two engaging elements 53 are provided, which are opposite one another and in each case extend radially outwards towards their ends. Fig. 2B shows two representations of a connecting rod 3, the connecting rod 3 having a corresponding arrangement relative to the air spring device 2 and, in addition to the interface region a, having a further interface region B which is offset relative to the interface region a. Thus, the air spring arrangement 2 can be arranged selectively in the interface region a or in the other interface region B, preferably in a manner which depends on whether the connecting rod 3 is arranged on the left-hand side or on the right-hand side of the vehicle when viewed from the direction of travel. For this purpose, the number of receiving areas 51 and form-locking areas 63 provided on the connecting rod 3 is at least twice as large as the number of coupling elements 53 provided on the connecting rod 3. Furthermore, for the corresponding arrangement of the connecting rod 3, it is provided that the receiving region 51 is greater than or equal to the area of the engaging element 53, measured in a cross section perpendicular with respect to the fitting direction AR, in the radial and circumferential directions. Furthermore, in the exemplary embodiment shown, it is provided that the receiving region 51 has substantially the same extent in the circumferential direction as the form-locking region 63. Furthermore, it is preferably provided that a locking aid is provided for visualizing the orientation of the engagement element in the form-locking region 63, which locking aid informs the technician of the air spring device 2 of the fact that: the air spring device 2 is oriented such that the coupling element 53 has reached the form-locking region 63. For example, the locking aid comprises one or more markings 69 on the connecting rod 3 and the air spring arrangement 2, which markings 69 are oriented in a predetermined manner relative to one another in the mounted state. It is also conceivable that the locking aid provides an acoustic or visual signal in the form of a lit or extinguished lamp when the final state is assumed in the form-locking region 63.

Fig. 3 shows the coupling element 53 for the air spring device 2 from the preceding figures in detail. In order to achieve a certain tolerance compensation and to produce a clamping action in the mounted state, it is provided that the engaging element 53 is inclined by an angle α with respect to a section parallel to the offset direction VR, the angle α preferably taking a value of between 1.5 ° and 4.5 °, preferably between 0.8 ° and 2.2 °, particularly preferably between 1.3 ° and 1.8 °.

Figure 4 schematically illustrates a portion of a method of installing an air spring system 1 in accordance with an exemplary embodiment of the present invention. In particular, it is shown that the engaging elements 53 are transferred from the receiving region 51 to the form-locking region 63 by a displacement movement, preferably by a rotational movement, in a displacement direction VR and form a form-locking connection in a form-locking direction FR differing from the displacement direction VR. Here, the air spring device 2 is gradually rotated with respect to the connecting rod 3. Here, the upper left drawing shows the state of the air spring device 2 immediately after the air spring device 2 is assembled by the assembling motion. There is no form-locking connection with the connecting rod 3. The latter diagram in the first row and the two diagrams on the left-hand side of the second row show the air spring arrangements 2 successively at different times during the transfer. Here, the overlap between the engaging element 53 and the connecting rod 3 (when viewed from the form-locking direction FR) increases. In the middle drawing of the second row, the engaging elements 53 are already completely below the form-locking regions 63 when viewed in the form-locking direction FR. In the lower right hand figure, the engagement element 53 is in contact with the edge of the link 3.

List of reference numerals

1 air spring system

2 air spring device

3 connecting rod

9 fluid conduit

11 air bellows

12 piston

15 Pin-shaped fastening element

21 upper side

22 lower side

51 receiving area

53 joining element

61 guide channel

63 region of form closure

69 mark

Area of A interface

B another interface region

FR direction of form closure

Direction of VR offset

AR Assembly Direction

Angle alpha