Mounting system for an extension, motor vehicle

Abstract

Fastening system (10) for an extension (7), in particular an extension compartment, slidably mounted on the body (2) of a motor vehicle (1), in particular a motorhome, wherein the extension (7) is slidably mounted such that it can be moved into a non-use position located at least substantially within the body (2) and into a use position projecting at least substantially laterally from the body (2), with at least one retaining pin device (11) for fastening the extension (7) to the body (2) in the use position or in the non-use position, wherein the retaining pin device (11) has a cylindrical retaining pin (12) on the body (2) or on the extension (7) and a retaining pin receptacle (13) with a retaining opening (14) on the extension (7) or on the body (2), wherein the retaining pin (12) and retaining receptacle (13) are arranged such thatthat the retaining pin (12) can be inserted into or is inserted into the retaining opening (14) in the operating or non-operating position, characterized in that the retaining pin device (11) has a displaceable clamping hook (22) for engaging behind the retaining pin receptacle (13), which is displaceable in or on the retaining pin (12) in the longitudinal extension of the retaining pin (12) to generate a clamping force between extension (7) and body (2).

Description

[0001] The present invention relates to a fastening system for an extension, in particular an extension compartment, which is slidably mounted on the body of a motor vehicle, in particular a motorhome, wherein the extension is slidably mounted such that it can be moved into a non-use position located at least substantially within the body and into a use position projecting at least substantially laterally from the body, with at least one retaining pin device for fastening the extension to the body in the use position or in the non-use position, wherein the retaining pin device has a cylindrical retaining pin on the body or on the extension and a retaining pin receptacle with a retaining opening on the extension or on the body, wherein the retaining pin and retaining receptacle are arranged such that the retaining pin can be inserted into or is inserted into the retaining opening in the use position or non-use position.

[0002] Furthermore, the invention relates to a motor vehicle, in particular a motorhome, with a body and with an extension, in particular an extension compartment, which is slidably mounted on the body in such a way that it can be slid into a non-use position located at least substantially within the body and into a use position projecting at least substantially laterally from the body, wherein the motor vehicle has the aforementioned fastening system.

[0003] Fastening systems of the type mentioned above are known from the prior art. In larger motor vehicles, particularly those designed as motorhomes, side extensions are popular for increasing the usable space of the motorhome when needed. These extensions are often box-shaped and, in their operating position, project laterally from an outer wall of the motor vehicle or vehicle cabin. In their non-operating position, they are retracted into the body or vehicle cabin, so that, in particular, one outer wall of the extension is at least substantially flush with the outer wall of the motor vehicle.This ensures that the extension is securely stowed in the vehicle or motorhome during travel, and in particular does not unnecessarily widen the vehicle. When stationary, the living space is maximized by sliding the extension outwards into its operating position, so that the outer wall of the extension is spaced away from the outer wall of the vehicle. It is known to provide such extensions both on an outer wall extending parallel to the direction of travel or the longitudinal extent of the vehicle and on a rear wall of the vehicle that extends transversely to the direction of travel or the longitudinal extent of the vehicle.

[0004] However, such a projection requires a relatively large opening in the outer wall of the vehicle. This interruption of the vehicle structure, and especially the bodywork, leads to a weakening of its robustness, particularly its torsional rigidity.

[0005] Motorhomes with extensions are already known from the prior art, which also include a fastening system by which the extension can at least be positioned on the vehicle body in the operating and / or non-operating position. For example, patent application US 7,328,927 B1 discloses a safety mechanism for a motorhome extension that interacts with the extension in both the operating and non-operating positions. The safety mechanism is a pure positioning system that optimizes the alignment of the extension with the vehicle body. The known solution uses a retaining pin that can be inserted into a retaining pin opening to position the extension and the vehicle body relative to each other. Patent application CA 2,337,719 A1 discloses another motorhome that uses a locking pin system to secure an extension to the vehicle body in the non-operating position.Furthermore, from patent application US 6,224,126 B1, a motor vehicle with an extension is known which uses pivotable restraint devices on the extension which lock the extension in the use position and prevent accidental insertion into the non-use position.

[0006] The invention is based on the objective of creating an improved fastening system that better supports the bodywork in the non-use position.

[0007] The problem underlying the invention is solved by a fastening system with the features of claim 1. This has the advantage that the retaining pin device not only ensures positioning of the extension on the body, but also results in the extension being advantageously tensioned on the body, thereby increasing the torsional stiffness of the body and the overall stability.

[0008] The invention provides that the retaining pin assembly has a movable tension hook for engaging behind the retaining pin receptacle. This tension hook is slidable along the longitudinal axis of the retaining pin to generate a clamping force between the extension and the vehicle body. Thus, a tension hook is associated with the retaining pin and is slidable along its longitudinal axis to generate a clamping force between the extension and the vehicle body, both in the operating and non-operating positions. This clamping force secures the extension to the vehicle body. In the clamped state, this improves the robustness of the vehicle body in conjunction with the extension.

[0009] Preferably, the tension hook can be pivoted from a release position, which lies at least substantially within the retaining pin, to a locking position projecting laterally from the retaining pin. By pivoting the locking hook, it can advantageously be inserted, together with the retaining pin, into the retaining opening of the retaining pin receptacle, and then pivoted in the inserted position of the retaining pin to engage behind the retaining pin receptacle. When the tension hook is then moved relative to the retaining pin along the longitudinal extent of the retaining pin, the clamping force is established between the retaining pin and the retaining pin receptacle, and thus between the extension and the body. According to a first embodiment, the retaining pin is arranged on the extension and the retaining pin receptacle on the body; according to a second embodiment, the arrangement is reversed, so that the retaining pin is arranged on the body and the retaining pin receptacle on the extension.

[0010] Preferably, a controllable actuator for repositioning the clamping hook is associated with the clamping hook. This automates the clamping of the extension to the vehicle body and ensures the reliable achievement of the desired clamping forces. Preferably, the retaining pin assembly has an actuator plate that is displaceable transversely to the longitudinal extent of the retaining pin. A cam guide, which interacts with the catch hook, is formed in or on this plate. The cam guide is designed to move the catch hook into the release or locking position when the actuator plate is moved. The actuator plate thus serves to displace the catch hook so that it can be pivoted precisely into the locking or release position. The cam guide results in an advantageous movement pattern of the catch hook, which ensures secure engagement.Furthermore, the cam track offers the advantage that high forces can also be transferred to the catch hook, so that the tension force is also generated by the cam track.

[0011] Preferably, the cam track is designed such that when the actuator plate is moved, the catch hook is moved along the longitudinal axis of the retaining pin to generate the clamping force. This ensures that moving the actuator plate achieves both movements of the catch hook via the cam track: moving and pivoting. The cam track preferably optimizes the sequence of movements of the catch hook such that the catch hook pivots before being moved to generate the clamping force. Optionally, the actuator plate only generates the clamping force, and the pivoting of the catch hook is achieved by other means. Optionally, the actuator plate also has at least two cam tracks, one for pivoting and the other for moving.

[0012] Preferably, the catch hook has a pivot bearing for its pivoting, which is formed on the retaining pin, and a lever arm projecting laterally from the catch hook at the level of the pivot bearing, which interacts with the cam guide to pivot the catch hook. The clamping force can be advantageously adjusted by moving the actuator plate, particularly through the cam guide interacting with the pivot bearing. The lever arm advantageously achieves the pivoting movement of the catch hook when the actuator plate is moved. This provides a compact and simple actuator design, which, in particular, effects the pivoting and moving of the catch hook relative to the retaining pin with a single actuator. According to an alternative embodiment of the invention, the pivot bearing itself is mounted in one or more of the cam guides, with the retaining pin then optionally being mounted in a fixed position.Preferably, the swivel bearing is additionally guided in an elongated hole that extends along the longitudinal axis of the retaining pin.

[0013] Preferably, a retaining pin guide is formed on the actuator plate, which interacts with the retaining pin to move it along its longitudinal axis when the actuator plate is moved. This allows the retaining pin itself to also be moved along its longitudinal axis by the actuator plate. This facilitates, for example, the assembly of the retaining pin device when the extension is in the operating or non-operating position and the retaining pin is opposite the retaining pin receptacle.

[0014] The motor vehicle according to the invention is characterized by the fastening system according to the invention. This results in the advantages already mentioned above.

[0015] Preferably, the fastening system comprises several of the retaining pin devices according to the invention, which are arranged in particular around the circumference of a body opening in the vehicle body that receives the extension. The number of retaining pin devices is selected, in particular, depending on the desired increase in the stiffness or robustness of the vehicle body. Preferably, the retaining pin devices are all designed such that the retaining pin is arranged on the extension and the retaining pin receptacle on the vehicle body, or that the retaining pins are all arranged on the vehicle body and the retaining pin receptacles are all arranged on the extension.According to a further embodiment, at least one retaining pin device is designed such that the retaining pin is arranged on the extension and the retaining pin receptacle is arranged on the body, and at least one further retaining pin device is designed such that the retaining pin is arranged on the body and the associated retaining pin receptacle is arranged on the extension.

[0016] Particularly preferably, the extension has an outer wall in or on which at least one stiffening strut is arranged, which runs from one of the retaining pin devices to one of the other retaining pin devices, wherein one and the other retaining pin device are particularly diagonally to each other assigned to the outer wall, so that the stiffening strut in question forms a diagonal strut of the outer wall, which advantageously provides additional stiffening of the side wall of the motor vehicle.

[0017] Further advantages and preferred features and combinations of features will become apparent in particular from the foregoing and from the claims. The invention will now be explained in more detail with reference to the drawings. To this end, we show... Fig. 1. A favorable motor vehicle in a perspective view, Fig. 2 a detailed view of a motor vehicle fastening system, Fig. 3A to E show a sectional view of the fastening system in different operating states and Fig. 4 A simplified perspective view of the fastening system.

[0018] Fig. Figure 1 shows a simplified perspective view of an advantageous motor vehicle 1 designed as a camper van. The motor vehicle 1 has a body 2 mounted on a chassis 3. The body 2, particularly together with trim panels, forms a vehicle cabin 4, which has one or more interior spaces. According to the present embodiment, an opening 6 is formed in an outer wall 5 of the body 2, which is supported and / or formed by the body and extends parallel to the longitudinal extent of the motor vehicle 1. An advantageous extension 7 is associated with this opening. In this example, the opening 6 has a rectangular contour and extends over a large portion of the outer wall 5. Alternatively, instead of the single large opening 6, several smaller openings can be formed in the outer wall 5, each associated with an extension 7, as explained in more detail below.

[0019] The extension 7 is box-shaped with a rectangular contour, and is designed such that it at least substantially fills the opening 6. Fig. Figure 1 shows the extension 7 in a partially extended operating position. In this position, the extension 7 projects laterally from the outer wall 5, with its inner side facing the vehicle 1 being open or at least substantially open, and its side facing away from the vehicle cabin having a closed outer wall 8, which may alternatively include one or more window openings or a door. In the operating position, the extension 7, which thus forms a space extension, enlarges the vehicle cabin or the interior of the cabin 4 of the vehicle 1.

[0020] From the operating position, the extension 7 can be moved into a non-operating position inserted into the bodywork 2 or the vehicle cabin 4, as indicated by an arrow 9. Fig. Figure 1 is shown. In the non-use position, the outer wall 8 of the extension 7 closes the opening 6 in the outer wall 5 at least substantially, preferably completely. Because the opening 6 weakens the structure of the body 2, which can have a negative impact during driving, the extension 7 is equipped with an advantageous fastening system 10, which is explained in more detail below. The fastening system has several retaining pin devices 11, with one retaining pin device 11 being assigned to each corner of the opening 6, so that the present fastening system 10 has four retaining pin devices 11. In principle, however, more or fewer retaining pin devices 11 are also possible.

[0021] Fig. Figure 2 shows an enlarged detail view of the motor vehicle 1 in the area of ​​the retaining pin device 11, which is located on the motor vehicle 1 in the corner of the opening 6 at the top right, as shown in Fig. The retaining pin device 11 is arranged as shown in Figure 1. It features an advantageous retaining pin 12 that interacts with a retaining pin receptacle 13 when the extension 7 is moved into the non-use position. The retaining pin receptacle 13 has a retaining opening 14 whose inner contour corresponds at least substantially to the outer contour of the retaining pin 12, allowing the retaining pin 12 to be inserted into the retaining opening 14. In particular, the retaining opening 14 and the retaining pin 12 each have circular cross-sections, with the cross-section of the retaining opening 14 being slightly larger than the outer cross-section of the retaining pin 12, thus enabling substantially frictionless insertion of the retaining pin 12 into the retaining opening 14 of the retaining pin receptacle 13.

[0022] Fig. Figures 3A to E each show a simplified sectional view of the retaining pin device 11. Fig. 2 in different operating states.

[0023] The retaining pin receptacle 13 is, according to the present embodiment, as in particular shown in Fig. Figure 3A shows the cylinder 15 before assembly. It is cup-shaped, with a receiving cylinder 15 having an optionally closed bottom 16, and a collar 17 formed on the end face of the cylinder 15 facing away from the bottom 16. This collar projects both outwards and inwards from the outer wall of the cylinder 15. The inwardly projecting section of the collar 17 forms an inwardly projecting retaining rib 18 that extends around the circumference of the cylinder 15, thus defining and limiting the retaining opening 14. According to this embodiment, the outwardly projecting section of the collar 17 serves in particular to arrange the retaining pin receptacle 13 on the outer wall 8 of the extension 7.

[0024] The retaining pin 12 has a hollow cylindrical body 19, which at its end facing the retaining pin receptacle 13 has a closed insertion tip 20 that tapers towards the retaining pin receptacle 13. The maximum outer diameter of the retaining pin 12 is smaller than the inner diameter of the retaining opening 14 to enable the interaction between the retaining pin 12 and the retaining opening 14 described above. The insertion tip 19 advantageously centers the retaining pin 12 on the retaining pin receptacle 13 when the retaining pin 12 is inserted into the retaining pin receptacle 13 or the retaining opening 14, for example, when the extension 7 is moved into the non-use position.

[0025] The hollow cylinder 19 has a longitudinally elongated hole or slot 21. A catch hook 22 is located in the slot 21, which in its unused state, as shown in Fig. 3A shows that the catch hook 22 lies at least substantially within the cylinder 19. The catch hook 22 is pivotally mounted by a pivot bearing 23 about a pivot axis 24 transverse to the longitudinal extent of the retaining pin 12, wherein at its free end, which in the state shown in Figure 3A lies at the end of the cylinder 19, the catch hook 22 is pivotally mounted about a pivot axis 24 transverse to the longitudinal extent of the retaining pin 12. Fig. 3A lies within the cylinder 19 and has a retaining lug 25. The retaining lug 25 is associated with the centering tip 20, while the pivot bearing 23 is spaced apart from the centering tip 20. The pivot bearing 23 is arranged on the hollow cylinder 19 or on the retaining pin 12. For this purpose, the hollow cylinder 19 has a radially projecting projection 33 on both sides of the slot 21, with a bearing opening through which a bearing bolt carrying the catch hook 22 is guided and rotatably mounted, so that the pivot axis 24 of the pivot bearing 23 lies outside the hollow cylinder 19. The catch hook is thus pivotably mounted directly on the hollow cylinder 19 or on the retaining pin 12.

[0026] The catch hook 22 further comprises a lever arm 29, which projects from the catch hook 22 at an almost right angle at the level of the pivot bearing 23, so that the catch hook 22 together with the lever arm 29 forms an L-shaped and, in particular, one-piece element. At its free end, i.e., at its end facing away from the pivot joint 23, the lever arm 29 interacts with an actuator plate 26 of a controllable actuator 27. The actuator plate 26 has a cam guide 28, along which the free end of the lever arm 29 is slidably mounted relative to the actuator plate 26. For this purpose, a guide pin 34, projecting laterally towards the actuator plate 26, is preferably arranged or formed at the free end of the lever arm 29 and interacts with the cam guide 28.According to the present embodiment, the cam guide 28 is designed as a longitudinal groove or slot in the actuator plate 26, into which the guide pin 34 of the lever arm 29 engages for its guidance and for guiding and displacing the catch hook 22. The cam guide 28 interacts with the lever arm 29 and the guide pin 34 in such a way that when the actuator plate 26 is moved to the left in the plane of the paper, the catch hook 22 is pivoted counterclockwise, so that its retaining lug 25 protrudes outwards through the slot 21 from the cylinder 19.

[0027] When joining the retaining pin 12 with the retaining pin receptacle 13, the cylinder 19 with the centering tip 20 is first inserted into the retaining opening 14, as shown in Fig. 3B shown. By pivoting the catch hook 22, the retaining lug 25 comes into a position engaging behind the retaining web 18, as shown in Fig. 3C shown. This already results in a positive-locking connection between the retaining pin 12 and the retaining pin receptacle 13. As a result, the extension 7 and the body 2 are already locked together.

[0028] If the actuator plate 26 is moved further, as indicated by the arrow in the Fig. When 3B to E is displayed, the catch hook 22 is pulled away from the retaining pin receptacle 13 by the cam guide 28, generating a clamping force that acts between the catch hook 22 and the retaining pin receptacle 13. This clamps the extension 7 and the body 2 against each other, or pulls them together, as shown in Fig. Shown in 3D.

[0029] Advantageously, the retaining pin 12 itself is also guided with the cylinder 19 by a guide pin 30 in a further cam guide 31 of the actuator plate 26, which is designed such that the actuator plate 26 can be moved from the position of Fig. In 3C, where the catch hook 22 already engages behind the retaining rib 18, not only the catch hook 22 but also the retaining pin 12 is pulled away from the retaining pin receptacle 13 along its entire length, thus supporting the forces transmittable by the catch hook with the retaining pin 12 and enabling increased clamping forces. In particular, the retaining pin 12 is designed such that, when retracted, it positively locks the catch hook 22 in the position engaging behind the retaining rib 18, thereby reliably preventing accidental release of the clamping force.

[0030] In the Fig. In the final position shown in 3E, both the extension 7 is positioned on the body 2, and advantageous bracing is applied to all four corners of the extension 7, thereby advantageously increasing the torsional stiffness of the body 2.

[0031] Preferably, the extension 7 also has two stiffening struts 32 on its outer wall 8, which extend diagonally across the outer wall 8, each from one retaining pin device 11 to a diagonally positioned retaining pin device 11, so that the stiffening struts 32 ultimately constitute diagonal struts of the extension 7. The diagonal struts 32 advantageously further increase the robustness of the body 2 in the non-use position of the extension 7.

[0032] Fig. Figure 4 shows in a simplified perspective view the device 11 of the fastening system SC, with the supporting receptacle 13 shown in section. Fig.Figure 4 shows that the pivot bearing 23 is advantageously formed by the retaining pin 12 itself or by the hollow cylinder 19. The slot 21 also extends through the lateral projection 33 of the return cylinder 19, which forms the pivot bearing 23. The clear width of the slot 21 and the width of the catch hook 22 are preferably selected such that the catch hook 22 is guided laterally in the slot 21 by the hollow cylinder 19 with little or no play, so that it cannot move laterally during operation and thereby undesirably break the intended connection between the extension 7 and the body 2.

[0033] Of course, other configurations of the actuator 27 are also conceivable, for example with several controllable units, wherein one unit pivots the catch hook and another unit generates the clamping force. In any case, the actuator 27 preferably has a controllable electric motor, which is connected, for example, by a gearbox to the actuator plate 26 and / or to the catch hook 22 and / or the retaining pin 12. Reference symbol list 1 motor vehicle 2 Bodywork 3 Chassis 4 Vehicle cabin 5 Exterior wall 6 Opening 7 Expulsion 8 Exterior wall 9 Arrow 10 fastening system 11 Retaining pin device 12 retaining pin 13 Retaining pin 14 Holding opening 15 receiving cylinders 16 Floor 17 collars 18 landing stage 19 cylinders 20 insertion tips 21 slots 22 hooks 23 swivel bearings 24 swivel axis 25 retaining lug 26 Actuator plate 27 Actuator 28 Backstage tour 29 Lever arm 30 guide pins 31 Backstage Tour 32 stiffening struts 33 lead 34 guide pins QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 7,328,927 B1

[0005] CA 2 337 719 A1

[0005] US 6,224,126 B1

[0005]

Claims

Fastening system (10) for an extension (7), in particular an extension compartment, slidably mounted on the body (2) of a motor vehicle (1), in particular a motorhome, wherein the extension (7) is slidably mounted such that it can be moved into a non-use position located at least substantially within the body (2) and into a use position projecting at least substantially laterally from the body (2), with at least one retaining pin device (11) for fastening the extension (7) to the body (2) in the use position or in the non-use position, wherein the retaining pin device (11) has a cylindrical retaining pin (12) on the body (2) or on the extension (7) and a retaining pin receptacle (13) with a retaining opening (14) on the extension (7) or on the body (2), wherein the retaining pin (12) and retaining receptacle (13) are arranged such thatthat the retaining pin (12) can be inserted into or is inserted into the retaining opening (14) in the operating or non-operating position, characterized in that the retaining pin device (11) has a displaceable clamping hook (22) for engaging behind the retaining pin receptacle (13), which is displaceable in or on the retaining pin (12) in the longitudinal extension of the retaining pin (12) to generate a clamping force between extension (7) and body (2). Fastening system according to claim 1, characterized in that the tension hook (2) can be pivoted from a release position located at least substantially in the retaining pin (12) into a catching position projecting laterally from the retaining pin (12). Fastening system according to one of the preceding claims, characterized in that a controllable actuator (27) for repositioning the tension hook (22) is assigned to the tension hook (22). Fastening system according to one of the preceding claims, characterized in that the retaining pin device (11) has an actuator plate (26) which is displaceable transversely to the longitudinal extent of the retaining pin (12), in or on which a cam guide (28) cooperating with the catch hook (22) is formed, wherein the cam guide (28) is designed to move the catch hook (22) into the release position or into the catch position when the actuator plate (26) is moved. Fastening system according to one of the preceding claims, characterized in that the cam guide (28) is designed such that when the actuator plate (26) is moved, the catch hook (22) is moved in the longitudinal extension of the retaining pin (12) in order to generate the clamping force. Fastening system according to one of the preceding claims, characterized in that the catch hook (22) has a pivot bearing (23) for pivoting it, which is formed on the retaining pin (12), and a lever arm (29) projecting laterally from the catch hook (22) at the level of the pivot bearing (23), which cooperates with the cam guide (28) to pivot the catch hook (22). Fastening system according to one of the preceding claims, characterized in that a cam guide (31) is formed on the actuator plate (26) which cooperates with the retaining pin (12) to move the latter in its longitudinal extension when the actuator plate (26) is moved. Motor vehicle (1), in particular motorhome, with a body (2) and with an extension (7), in particular extension chamber, which is slidably mounted on the body (2) in such a way that it can be slid into a non-use position lying at least substantially within the body (2) and into a use position projecting at least substantially laterally from the body (2), characterized by a fastening system (10) according to one of claims 1 to 7. Motor vehicle according to claim 8, characterized in that the fastening system (10) has several retaining pin devices (11) which are arranged in particular around the circumference of an opening (6) of the body (2) which receives the extension (7). Motor vehicle according to claim 9, characterized in that the extension (7) has an outer wall (8) in or on which at least one stiffening strut (32) is arranged, which extends from one of the retaining pin devices (11) to another of the retaining pin devices (11), wherein one and the other retaining pin device (11) are in particular diagonally to each other assigned to the outer wall (8).

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