Bumper device for a motor vehicle

Abstract

The invention relates to a bumper device (3) for a motor vehicle (1), in particular a front bumper upper part, comprising an outer skin section (4) which delimits a receiving space (5) at least in some sections, wherein the bumper device (3) has at least one adjusting device (8) which is designed to adjust a section (6), to be adjusted, of the bumper device (3), in particular a front flap edge facing a front flap (2), wherein the adjusting device (8) has a positioning section (9) which is arranged in the receiving space (5) and is designed to position the outer skin section (4), wherein the positioning section (9) is coupled to a drive section (10) of the adjusting device (8), said drive section being spaced apart from the positioning section (9), wherein the adjusting device (8) has at least one lever device (14) which is designed to convert a longitudinal movement introduced into the drive section (10) into a movement of the positioning section (9) in the vertical direction.

Description

[0001] Bumper device for a motor vehicle

[0002] The invention relates to a bumper device for a motor vehicle, in particular a front bumper upper part, comprising an outer skin section that at least partially defines a receiving space, wherein the bumper device has at least one adjusting device which is designed to adjust a section of the bumper device to be adjusted, in particular a front flap edge facing a front flap.

[0003] Bumper devices for motor vehicles, which have an outer skin section that defines a receiving section in which, for example, insert devices can be accommodated, are generally known from the prior art. Typically, insert devices are received or inserted into the receiving sections in order to selectively adjust structural properties of the bumper device, such as its deformation behavior or stability.

[0004] It is further known from the prior art that an adjustment device is provided on the bumper assembly by which at least one section of the bumper assembly can be adjusted, for example, to set a defined gap dimension or distance to a front flap adjacent to the bumper assembly. Specifically, a front flap edge of the bumper assembly can be positioned by means of the adjustment device so that a defined orientation or position of the front flap edge relative to the front flap is achieved.

[0005] Since the installation space in the area of ​​the bumper assembly is usually fixed or severely limited, the adjustment mechanism is generally located in an area behind an engine compartment seal in the longitudinal direction of the vehicle. This means that the adjustment mechanism is not located in the same area as the edge of the hood, but rather the engine compartment seal is situated between the two in the longitudinal direction of the vehicle. When the adjustment mechanism acts on the bumper assembly to adjust the edge of the hood, the engine compartment seal typically dampens the adjustment movement. In other words, the engine compartment seal is also adjusted along with the bumper assembly, so that, depending on the direction of the adjustment movement, it can exert more or less pressure on the bumper assembly or the hood.This therefore results, firstly, in a reduction of the range of movement that can be introduced with the adjustment device, and secondly, in the defined installation of the engine compartment seal being impaired.

[0006] The invention is based on the objective of providing an improved bumper device for a motor vehicle, in which, in particular, the adjustment or positioning of an adjustable section of the bumper device is improved.

[0007] The problem is solved by a bumper device according to claim 1. The dependent claims relate to possible embodiments.

[0008] As described, the invention relates to a bumper device for a motor vehicle. The bumper device can, in particular, be designed as or comprise a front bumper upper section. The bumper device comprises an outer skin section that at least partially defines a receiving space. For example, at least one insertion device is received in the receiving space. The outer skin section can, for example, be made of a plastic. The insertion device is, for example, made of a plastic. The insertion device and the outer skin section can be made of different materials.

[0009] Furthermore, the bumper assembly features an adjustment device designed to adjust a section of the bumper assembly, in particular a front flap edge facing a hood. In other words, the section of the bumper assembly that needs to be adjusted can be specifically adjusted or set by means of the adjustment device, especially during an assembly process. Within the context of this description, the terms "adjust" and "set" therefore encompass any change in position, such as a change in position, orientation, alignment, and the like. Specifically, the position of the front flap edge relative to the hood of the vehicle is adjusted.The invention is based on the finding that the adjusting device has a positioning section which is arranged in the receiving space and is designed to position the outer skin section, wherein the positioning section is coupled to a drive section of the adjusting device spaced apart from the positioning section, wherein the adjusting device has at least one lever device which is designed to translate a longitudinal movement introduced into the drive section into a movement of the positioning section in the upward direction.

[0010] The invention thus proposes that the positioning section, which transmits the adjustment movement to the outer skin section, be spaced apart from the drive section, where the movement is generated or introduced into the adjustment device. Specifically, a longitudinal movement introduced into the drive section is translated into a vertical movement of the positioning section. The longitudinal movement can, for example, be executed along the longitudinal direction of the vehicle or at a defined angle thereto, in particular between -30° and +30°, preferably -20° and +20°. The longitudinal movement can, for example, run parallel to the ground. The vertical direction can be perpendicular to the longitudinal direction or also arranged at a defined angle.In general, the longitudinal movement causes the drive section to move in a first direction, whereby the movement of the drive section is translated by means of the adjusting device, namely the lever mechanism, into a movement of the positioning section, which is executed in a second direction. The first direction is different from the second direction.

[0011] Advantageously, the section of the bumper assembly where the adjusting mechanism engages to adjust the section to be adjusted can be spaced apart from the section where the movement is initiated. This means, in particular, that the movement can be applied to or transferred into the bumper assembly precisely where it is needed or intended to be performed to adjust the section to be adjusted, while the movement can be initiated into the adjusting mechanism or drive section at a location where installation space is available within the vehicle. For example, this allows for flush or any other alignment between the section to be adjusted, especially the front hood edge, and the hood itself.The adjustment mechanism allows the section of the bumper to be set and held in place during vehicle operation. This section is typically a relatively soft area of ​​the bumper near the hood, for example, a so-called "soft nose." This section is located in the longitudinal direction of the bumper, in front of the hood.

[0012] The described lever mechanism translates the longitudinal movement into the upward movement of the positioning section. For example, the longitudinal movement is initiated into the lever mechanism, which then articulates and transmits the initiated movement to the positioning section, allowing the section to be adjusted to move upwards from the positioning section.

[0013] The bumper assembly can be further developed such that the drive section is connected to the lever assembly by means of a connecting section, the connecting section extending longitudinally beneath a seal of the bumper assembly, in particular an engine compartment seal. In the described embodiment, the lever assembly is connected to the drive section via the connecting section. This means that the movement introduced into the drive section can be transmitted to the lever assembly by means of the connecting section. The connecting section can extend longitudinally, for example as a strut, plate, or rail, and thus introduce the longitudinal movement into the lever assembly. Advantageously, the connecting section can be relatively narrow, i.e., have a small dimension in the vertical direction. The connecting section can be located beneath the seal of the bumper assembly.the movement is guided through the front flap. In particular, the adjustment movement is not transferred to the seal of the bumper assembly, but is specifically introduced from the drive section in the longitudinal direction via the connecting section into the lever assembly and only translated into a movement in the upward direction by the lever assembly.

[0014] This allows the section of the bumper assembly to be adjusted without affecting or moving the seal. In particular, this enables a more direct transmission of the adjustment movement, without first having to move the seal or perform the adjustment movement against the seal. This means that, in the described design, the seal does not impair or reduce the range of motion of the adjustment movement. Furthermore, the lever mechanism and drive section can be positioned in the bumper assembly where the available space allows, especially away from the section to be adjusted. In areas of the seal where there is no space available for the drive section and lever mechanism, only the relatively narrow connecting section is used.Thus, the locations where the adjustment movement is transmitted and where the adjustment movement is generated can be relatively far apart.

[0015] Furthermore, the bumper assembly can be designed so that the positioning section and the drive section are arranged on opposite sides of a sealing plane defined by the seal in the longitudinal direction of the vehicle. For example, the seal in the longitudinal direction of the vehicle can divide the bumper assembly into two compartments, namely by the sealing plane running through the seal. The positioning section can thus be arranged in a first compartment and the drive section in a second compartment.

[0016] The two spaces can adjoin each other at the sealing plane defined by the seal. This means that the drive section, where the movement is initiated—for example, by a drive using a tool or manually by a worker—is located in a different space relative to the sealing plane than the positioning section, where the generated movement is introduced into the section of the bumper assembly to be adjusted, for example, the front flap edge. As described, the initiation point or point of action and the point where the movement is generated can therefore be comparatively far apart, for example, by more than 50 mm, and in particular by more than 100 mm.

[0017] As described, the positioning section is used, or rather designed, to transmit the adjustment movement to the outer section of the bumper assembly. In one embodiment of the bumper assembly, the positioning section may have a transmission area that rests against the section of the outer skin or an insert part to be adjusted within the receiving space. This design thus provides that the transmission area can initiate the adjustment movement directly or indirectly into the section to be adjusted. If the transmission area of ​​the positioning section makes direct contact with the section to be adjusted, the adjustment movement can also be initiated directly.

[0018] It is also possible that at least one insert part, for example a plastic part inserted into the receiving space, is arranged between the positioning section and the section to be adjusted. In this case, the adjustment movement is transmitted to the outer section via the insert part. The positioning section can also be part of an insert part that is formed or arranged in the receiving space. Alternatively, the positioning section can be designed as an additional part that is arranged in the receiving space, for example, in addition to an insert part.

[0019] As described at the outset, the lever mechanism translates the longitudinal movement initiated by the drive section into an upward adjustment movement and transmits this movement to the positioning section, which in turn transmits the adjustment movement to the section to be adjusted. In a further embodiment of the bumper device, the lever mechanism may include at least one lever joint, in particular a film hinge, designed to pivotally connect the connecting section to the positioning section.

[0020] For example, a longitudinal movement is induced in the drive section, which is transmitted to the lever assembly, specifically via the previously described connecting section. A transmission occurs via the lever joint, so that the longitudinal movement is transferred or converted in the vertical direction. The lever joint connects, for example, the previously described connecting section to the positioning section. The lever joint can be designed, for example, as a film hinge or by another type of articulated connection. The lever joint can, for example, incorporate a weakening in the material, allowing the material of the connecting element to move at that point or to be moved there when the adjustment movement is initiated. Furthermore, the lever assembly can be designed to have multiple joints, for example, three joints.The longitudinal movement initiated by the drive section can be transmitted to the positioning section, particularly via the connecting section and a first joint. The positioning section can, for example, rest against the section to be adjusted at a second joint. This contact point, or this second joint, can in turn be connected via a further section to a third joint, which connects this further section to a return section that, for example, runs at least partially parallel to the connecting section. The lever mechanism can, for example, have a triangular cross-section. The joints of the lever mechanism can, for example, be arranged in a triangle in space.

[0021] The bumper device may further be provided with a lever assembly comprising a guide section or guide device in which the connecting section is guided, in particular by positive locking. The guide section may, for example, be formed by, integrated into, or arranged on the previously described return section. The guide section may, for example, provide positive locking guidance for the connecting section, such as a groove or U-shape. During longitudinal movement, the connecting section is guided in such a way that it cannot move in any direction other than longitudinally. The guide device or guide section may, for example, also be designed as a band that guides and holds the connecting section in position.The belt can, for example, enclose the return section and the connecting section, thus coupling the connecting section to the return section, particularly in the vertical direction. However, the connecting section and the return section remain relatively movable in the longitudinal direction, meaning that the connecting section can move longitudinally relative to the return section.

[0022] In principle, the adjusting device can be made of any material. It may be preferred that the lever mechanism be made of plastic. Advantageously, the lever mechanism or the adjusting device is made of a material that is harder and / or stiffer than the section of the outer skin to be adjusted. This allows the adjusting movement to be transmitted in a defined manner from the adjusting device to the outer section, so that the outer section deforms in this area and assumes and retains the desired shape or position, particularly with respect to the front flap edge.

[0023] Furthermore, the bumper assembly may include an adjustment device, particularly the positioning section, designed as a separate assembly, or it may be integrated into a component, especially an insert, of the bumper assembly. As previously described, such inserts are typically used to influence the structure of the bumper assembly. For example, inserts may be designed to provide stability to the bumper assembly or to influence other properties of the bumper assembly, such as thermal expansion and the like.

[0024] In the described embodiment, the adjustment device can be configured in the receiving space in addition to at least one such insert part, or the adjustment device itself can be configured as such an insert part. This can offer the additional advantage that, besides adjusting the position, orientation, and alignment of the section to be adjusted, at least one further function can be integrated into the adjustment device, for example, regarding stability and / or thermal expansion. Furthermore, the adjustment device can be advantageously designed with regard to pedestrian protection. For example, the adjustment device can have at least one predetermined breaking point, particularly in the area of ​​the positioning section. The adjustment device does not, in particular, increase the stability or structure in the area of ​​the bumper assembly.This means that in a collision, the bumper device can deform in a defined manner, and the adjustment device does not hinder this deformation, but rather allows this deformation in a targeted way.

[0025] The bumper assembly can further comprise several such adjustment devices. For example, more than three, and in particular more than five, or even six, adjustment devices can be provided in the bumper assembly. These can be arranged, for example, distributed across the bumper assembly in a transverse direction. The individual orientations of the adjustment devices can differ from one another. Essentially, however, the drive mechanism of each adjustment device effects a movement in the longitudinal direction, i.e., in the longitudinal direction of the vehicle or at a defined angle thereto, for example, <30°.

[0026] As described at the beginning, the movement is initiated or generated via the drive section. The drive section can, for example, include a threaded drive and / or a detent mechanism. The threaded drive can be connected to a tool for adjustment, such as a screwdriver, particularly a cordless screwdriver. The rotary motion transmitted to the threaded drive causes the longitudinal movement to be initiated into the connecting section or lever mechanism, which then translates it into upward movement.

[0027] Alternatively or additionally, a locking device can be provided. For example, the drive section can be moved manually or by the described threaded drive and then locked in place using the locking device. The locking device can be formed, for example, by ribs aligned vertically towards each other. By pressing the locking device, the described ribs can be locked together. For example, a defined arrangement of the ribs, particularly at millimeter intervals or finer, can be selected. The locking device can be operated manually. Furthermore, the locking device can include an additional locking element, for example, a screw. Once the locking device is locked in the desired position, the additional locking element ensures that the locking device does not open unintentionally.

[0028] In addition to the bumper device, the invention relates to a motor vehicle comprising a previously described bumper device. The invention further relates to a method for adjusting at least one bumper device for a motor vehicle, in particular a front bumper upper section, comprising an outer skin section that at least partially defines a receiving space and in which at least one insertion device is received, wherein the bumper device has at least one adjustment device configured to adjust a section of the bumper device to be adjusted, in particular a front flap edge facing a front flap, wherein the adjustment device has a positioning section arranged in the receiving space and configured to position the outer skin section, wherein the positioning section is coupled to a drive section of the adjustment device spaced apart from the positioning section.wherein the adjusting device has at least one lever device by means of which a longitudinal movement introduced into the drive section is translated into a movement of the positioning section in the upward direction.

[0029] The method can be carried out, in particular, to adjust the at least one adjustable section of the bumper device. The method can be carried out, in particular, with a previously described bumper device.

[0030] All advantages, details, designs and / or features described in relation to the bumper device are fully transferable to the motor vehicle and the process.

[0031] The invention is explained with reference to exemplary embodiments and the figures. The figures are schematic representations and show:

[0032] Fig. 1 shows a schematic representation of a section of a motor vehicle with a bumper device according to a first embodiment in a first state;

[0033] Fig. 2 shows a section of Fig. 1 in a second state; and

[0034] Fig. 3 shows a schematic representation of a section of a motor vehicle with a bumper device according to a second embodiment.

[0035] Fig. 1 shows a schematic section of a motor vehicle 1 with a hood 2 and a bumper assembly 3. The bumper assembly 3 is designed, for example, as the upper part of the front bumper. The bumper assembly 3 has an outer skin section 4 that at least partially delimits a receiving space 5. The outer skin section 4 has an adjustable section 6, for example, a hood edge, which, as indicated by an arrow 7, is to be adjusted to the level of the hood 2. To carry out the adjustment, the motor vehicle 1 has at least one adjustment device 8, in particular several adjustment devices 8 distributed in the transverse direction of the motor vehicle 1, i.e., into or out of the plane of the drawing.The adjusting device 8 has a positioning section 9, which is arranged in the receiving space 5 and is designed to position the outer skin section 4, in particular to adjust section 6. To initiate an adjusting movement, the adjusting device 8 has a drive section 10. The drive section 10 can be moved, for example, by hand, as shown in Figs. 1 and 2, or alternatively or additionally, as shown, for example, in the second embodiment in Fig. 3, by means of a threaded drive 11 as indicated by arrow 12.

[0036] The drive section 10 is spaced from the positioning section 9 in the longitudinal direction, or vehicle longitudinal direction, of the motor vehicle 1, which extends laterally, for example, from left to right in Figs. 1-3. If an adjustment movement is initiated in the drive section 10, as shown in Fig. 2, this movement is transmitted to the positioning section 9, in particular via a connecting section 13. For this purpose, the adjustment device 8 has at least one lever device 14, which is designed to convert the longitudinal movement into a movement in the vertical direction, i.e., for example, along the vertical axis of the motor vehicle 1, as indicated by arrow 7.

[0037] In other words, a longitudinal movement of the motor vehicle 1 is initiated in the drive section 10, which is translated by the lever device 14 into a movement that can proceed in the upward direction of the motor vehicle 1.

[0038] The lever assembly 14 has three joints 15, 16, and 17. A first joint 15 is arranged between the connecting section 13 and the positioning section 9. A second joint 16 is arranged in the area of ​​the positioning section 9, connecting the positioning section 9 to a further section 18. The further section 18 is coupled to a return section 19 via a third joint 17. This return section 19 runs essentially parallel to the connecting section 13 and may be connected to the counterpart against which the drive section 10 is moved. In cross-section, the lever assembly 14, particularly with the positioning section 9, the further section 18, and the return section 19, forms a triangle. The interior angles of the triangle are distributed according to the position of the drive section 10.It is therefore possible to position the drive section 10 so that the positioning section 9 brings section 6 of the outer skin section 4 flush with the front flap 2. For this to be achieved, it is not necessary to perform the entire movement as shown in Fig. 2. In particular, the drive section 10 is only moved until section 6 is adjusted to the desired target position. If section 6 is too high, a counter-movement can also be performed.

[0039] The connecting section 13 can be guided by a positive locking mechanism to execute the movement. For example, a guide device, such as a groove, a rail, or the like, can be integrated into the return section 19, in or by means of which the return section 19 is guided. For example, the guide device prevents the connecting section 13 from shifting when the movement is initiated.

[0040] The connecting section 13 extends longitudinally under a seal 20 of the motor vehicle 1 or the bumper assembly 3. The seal 20 can be understood, for example, as an engine compartment seal. It is evident that the adjustment by means of the adjusting device 8 does not cause the seal 20 to be altered; that is, for example, it does not change the distance between the hood 2 and the bumper assembly 3 in the area of ​​the seal 20, and thus does not cause the seal 20 to be pressed more or less strongly against the hood 2. Instead, the movement is carried out longitudinally under the seal 20 without altering the seal 20 and is only converted into a movement in the vertical direction where this movement is required, namely to position the section 6.

[0041] The seal 20 thus defines a sealing plane that runs, for example, in the transverse direction of the vehicle and is therefore perpendicular to the longitudinal direction of the vehicle, or is spanned by the vertical and transverse directions. It can be seen that the drive section 10 is located on one side and the positioning section 9 on the other side of this sealing plane. In the figures, the drive section 10 is located to the right and the positioning section 9 to the left of the sealing plane or the seal 20.

[0042] In the area of ​​the drive section 10, a locking device (not shown) may also be provided. This can be formed, for example, by interlocking or engageable transverse ribs. Once the desired position of the drive section 10 has been reached, the locking device can be engaged. The locking device can be located, for example, on the underside of the connecting section 13 and the top side of the return section 19. Additionally, a further locking element, such as a screw, may be provided to create a non-self-releasing connection between the connecting section 13 or drive section 10 and the return section 19, either by means of a screw connection or otherwise.

[0043] The joints 15-17 can be designed, for example, as film hinges or in any other configuration. In principle, the bumper assembly 3 can consist of any components or be made of any materials. Preferably, the adjustment device 8, in particular the positioning section 9, is made of a plastic. The adjustment device 8 can be designed so that it does not increase the structure or stability in the area of ​​the outer section 4. In the event of a collision, the deformation of the bumper assembly 3, in particular of the outer skin section 4 or section 6, can be increased by the adjustment device 8. This can be ensured, for example, by the joints 15-17 acting as predetermined breaking points. This improves pedestrian protection with respect to the bumper assembly 3.

[0044] Figures 1 and 2 show that the adjusting device 8 is designed as an insert and, for example, performs the functions of an insert in the receiving space 5. Alternatively, Figure 3 shows that the adjusting device 8 can be designed separately from such a separate insert 21. In both cases, the adjusting device 8 can fulfill certain additional functions, for example, with regard to thermal expansion. The described adjusting device 8 can thus be used to selectively adjust or position section 6 of the outer skin section 4 of the bumper assembly 3. For this purpose, an adjusting movement is initiated in the drive section 10, in particular manually or by means of a tool. The adjusting movement initiated in the drive section 10 is transmitted via the connecting section 13 and the joint 15 to the positioning section 9 and thus translated into a movement of section 6 in the upward direction (see Figure 1).Arrow 7). The movement can be carried out until section 6 reaches a target position, for example, flush with the front flap 2. Subsequently, the drive section 10 or the connecting section 13 can be locked, specifically with a locking device, and if necessary secured by an additional locking element.

[0045] The method described herein for adjusting the bumper device 3 can be carried out using the bumper device 3 shown herein, in particular the adjusting device 8. All advantages, details and features described with respect to the bumper device 3 are fully transferable to the motor vehicle 1 and the method.

[0046] All advantages, details and features shown and described in relation to the individual embodiments can be combined, interchanged and transferred to one another as desired.

[0047] REFERENCE MARK LIST

[0048] 1 motor vehicle

[0049] 2 Front flap

[0050] 3 Bumper device

[0051] 4 Outer skin section

[0052] 5 Recording room

[0053] Section 6

[0054] 7 Arrow

[0055] 8 Adjustment device

[0056] 9 Positioning section

[0057] 10 Drive section

[0058] 11 Threaded drive

[0059] 12 Arrow

[0060] 13 Connecting section

[0061] 14 Lever device

[0062] 15-17 joint

[0063] 18 further section

[0064] 19 Return section

[0065] 20 Seal

[0066] 21 insert part

Claims

REQUIREMENTS 1. Bumper device (3) for a motor vehicle (1), in particular a front bumper upper part, comprising an outer skin section (4) that at least partially defines a receiving space (5), wherein the bumper device (3) has at least one adjusting device (8) configured to adjust a section (6) of the bumper device (3), in particular a front flap edge facing a front flap (2), characterized in that the adjusting device (8) has a positioning section (9) arranged in the receiving space (5) and configured to position the outer skin section (4), wherein the positioning section (9) is coupled to a drive section (10) of the adjusting device (8) spaced apart from the positioning section (9), wherein the adjusting device (8) has at least one lever device (14) configured toto translate a longitudinal movement introduced into the drive section (10) into a movement of the positioning section (9) in the upward direction.

2. Bumper device (3) according to claim 1 , characterized in that the drive section (10) is connected to the lever device (14) by means of a connecting section (13), wherein the connecting section (13) extends in the longitudinal direction under a seal (20) of the bumper device (3), in particular an engine compartment seal.

3. Bumper device (3) according to claim 2, characterized in that the positioning section (9) and the drive section (10) are arranged in the longitudinal direction of the vehicle on different sides of a sealing plane defined by the seal (20).

4. Bumper device (3) according to one of the preceding claims, characterized in that the positioning section (9) has a transmission area which, within the receiving space (5), rests against the section (6) of the outer skin (4) to be adjusted or an insert part (21).

5. Bumper device (3) according to one of the preceding claims, characterized in that the lever device (14) has at least one joint (15-17), in particular a film hinge, which is designed to articulately connect the connecting section (13) to the positioning section (9).

6. Bumper device (3) according to one of the preceding claims, characterized in that the lever device (14) has a guide section in which the connecting section (13) is guided, in particular in a positive locking manner.

7. Bumper device (3) according to one of the preceding claims, characterized in that the adjusting device (8), in particular the positioning section (9), is designed as a separate assembly or that the adjusting device (8) is integrated into a component, in particular an insert part (21), of the bumper device (3).

8. Bumper device (3) according to one of the preceding claims, characterized in that the drive section (10) has a threaded drive (11) and / or a detent device.

9. Motor vehicle (1) comprising a bumper device (3) according to any of the preceding claims.

10. Method for adjusting at least one bumper device (3) for a motor vehicle (1), in particular a front bumper upper section, comprising an outer skin section (4) that at least partially defines a receiving space (5), wherein the bumper device (3) has at least one adjusting device (8) configured to adjust a section of the bumper device (3) to be adjusted, in particular a front flap edge facing a front flap (2), characterized in that the adjusting device (8) has a positioning section (9) arranged in the receiving space (5) and configured to position the outer skin section (4), wherein the positioning section (9) is coupled to a drive section (10) of the adjusting device (8) spaced apart from the positioning section (9), wherein the adjusting device (8) has at least one lever device (14) by means of which a lever is inserted into the drive section (10). The initiated longitudinal movement is translated into a movement of the positioning section (9) in the upward direction.

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