Assembly, means of transport and method for creating a temporary connection between a handlebar and a wheel carrier

Abstract

The invention relates to an assembly for attaching a first element (1, 1', 1'') to a second element (2) which is movably mounted relative to the first element (1, 1', 1'').The assembly comprises a screw bolt (4, 40) with a head (5, 50) and a locking lever (3, 30, 300) detachably connected to the screw bolt (4, 40) with a retaining structure (6, 60, 600, 7, 70, 700), wherein the screw bolt (4, 40) is configured to project through the locking lever (3, 30, 300), the first element (1, 1', 1'') and the second element (2), the locking lever (3, 30, 300) is configured to be pressed against the second element (2) by means of the head (5, 50), and the retaining structure (6, 60, 600, 7, 70, 700) positively locks the head (5, 50) against rotation relative to the locking lever (3, 30, 700). 300) secures and the safety lever (3, 30, 300) is designed to collide directly or indirectly with the first element (1, 1', 1'') if the screw bolt (4, 40) is rotated.

Description

[0001] The invention relates to an assembly, a means of transport and a method for producing a temporary connection between a handlebar and a wheel carrier.

[0002] To connect a first assembly element to a second assembly element, connecting elements such as threaded screws with a clamping element, such as a nut, or threaded bolts with clamping elements arranged on both sides are known. Additional elements such as washers, plain washers or locking elements can be arranged on the connecting element. In particular, locking elements for securing a clamped clamping element are known, which prevent a decrease in the preload force (anti-loosening devices) or a loosening of the connections (loss protection), such as spring washers, retaining rings, wave washers, disc springs, spring washers, snap rings, ribbed rings, locking plates with tabs, locking plates with lugs, grooved nuts or lock nuts. Finally, material-bonded locking devices using, for example, adhesive or locking varnish are known.

[0003] To establish the connection between the first assembly element and the second assembly element, the threaded screw or bolt must be secured against rotation, and the clamping element(s) must be clamped to the connecting element with a predefined force, or vice versa. Particularly in locations with limited access, the necessary fixation of the connecting element to the clamping element or vice versa for assembly is difficult.

[0004] Arrangements are known in the prior art that feature a shape-based fixation of the screw head or a nut engaged by the threaded bolt relative to the first component element on which the connecting means is arranged. The shape-based fixation can be achieved, for example, by means of a notch in the first component element that corresponds to the shape of the screw head or the shape of the nut. Furthermore, shape-based fixations with locking plates with at least one tab are known.

[0005] Locking washers are generally stamped washers with at least one tab. Locking washers with one tab are defined in DIN 93 and locking washers with two tabs in DIN 463. Such locking washers can be made of steel, stainless steel and / or brass, for example, and are generally arranged between the first component and a screw head or between the first component and a nut engaged by a threaded bolt. Securing a screw head or a nut by means of a locking washers with at least one tab can be achieved by clamping the tab or tabs to the first component (cf. https: / / www.wegertseder.com / DIN-93-Scheiben-mit-1-Lappen). Locking washers with at least one tab are also known, in which a lock is provided between the locking washers and a screw head ora nut is manufactured by bending the tab or tabs onto at least one lateral surface of the screw head or one lateral surface of the nut (cf. https: / / secure.effeff.de / de / de / produktkatalog / ikon-p332054-scheibe-nts1-aus-nts1sb0).

[0006] Furthermore, locking washers with at least one tab are known, the shape of which is designed such that a first partial element of the locking washers rests against a first surface of the first component, and a second partial element of the locking washers, e.g., a tab, rests against a second surface of the component or against at least one side surface of the screw head or nut. The first surface can be oriented at right angles to the second surface (see https: / / www.bossard.com / eshop / dede / Sicherungshebele / sicherungsscheiben / sicherungsbleche / sicherungsblechemit-lappen / p / 842 / ).

[0007] DE 10 2018 109 703 A1 discloses a fastening arrangement for clamping fastening means, wherein the fastening arrangement comprises at least one anti-twist device, wherein the anti-twist device can be arranged in a clamping device and the anti-twist device has a transverse extension in the direction of a longitudinal axis and an upper end region with an upper end face, a central region and a lower end region with a lower end face, wherein the upper end region and the lower end region each form an end region of the transverse extension and the central region is arranged between the upper end region and the lower end region, wherein the upper end region is designed such that the anti-twist device can be fixed at least rotationally by means of the clamping device that can be arranged and the lower end region is designed such that a bolt that can be arranged can be fixed at least rotationally.

[0008] DE 10 2019 121 772 A1 discloses a bearing arrangement, in particular for a motor vehicle, comprising a first component and a second component, wherein the first component comprises a bearing element to which the second component is connected by means of a fastening means, wherein the fastening means is arranged in an opening of the bearing element along an arrangement direction, and wherein the fastening means has an engagement region around its circumference which is designed to create a holding structure in the opening when arranged in the bearing element.

[0009] DE 10 2011 007 831 A1 discloses a motor vehicle with structural units arranged within its chassis and each supporting a steerable wheel, each having a wheel carrier region supporting a wheel bearing and at least one receiving region for a wheel guide joint, on which a carrier supporting the structural unit engages, which indirectly connects the structural unit to a body of the vehicle, so that the structural unit comprises a formed, one-piece sheet metal body, of which the wheel carrier region and the receiving region are integral components.

[0010] In particular, the described locking plates cannot be used in assemblies in which one of a plurality of assembly elements is rotatably mounted on a second assembly element, since the known locking plates with tabs, when mounted on the second assembly, also support the second assembly and thus prevent the second assembly element from rotating relative to the first assembly element. Wheel suspensions are particularly suitable assemblies in which a wishbone, as the second assembly element, is rotatably mounted on a wheel carrier, as the first assembly element.

[0011] Consequently, there is a need for a securing element for an assembly that, for fastening a first assembly element to a second element movably mounted relative to the first assembly element, provides a torsion-proof fixation of the connecting element relative to the first assembly element. Based on the aforementioned prior art, it is therefore an object of the present invention to satisfy this need.

[0012] The above-identified problem is solved by the features of the independent claims. The subclaims contain preferred developments of the invention.

[0013] According to a first aspect of the present invention, an assembly for fastening a first element to a second element that is movably mounted relative to the first element is proposed, wherein the assembly in particular comprises a screw bolt with a head and a locking lever that is detachably connected to the screw bolt and has a holding structure. The screw bolt can be configured to extend through the locking lever, the first element, and the second element. The first element of the assembly can in particular have a through-bore through which the screw bolt extends. The second element of the assembly can in particular have a bearing for the screw bolt, for example a sleeve, through which the screw bolt extends. A first partial region of the screw bolt can in particular come to rest in the through-bore, and a second part of the screw bolt can in particular come to rest in the sleeve.The screw bolt can have additional subregions than those mentioned. The screw bolt can in particular have a nut at its end projecting beyond the first component. In one embodiment, the screw bolt can in particular each project beyond the first element and the second element by at least 5 mm to 20 mm in a screw bolt longitudinal axis. In other words, the screw bolt can protrude from both the first element and the second element in an assembled state. The locking lever can in particular be detachably connected to the screw bolt. A “detachable connection” is understood in particular to mean a temporary arrangement of the locking lever on the screw bolt, which can be released for disassembly. In other words, the locking lever can be detached from the screw bolt, if necessary using a tool, for example pliers.Additionally or alternatively, the screw bolt can be permanently connected to the locking lever and / or the locking lever can enclose the screw bolt. The attachment of the first element to the second element can be temporary and thus removable.

[0014] The safety lever is in particular designed to be pressed against the second element by means of the head of the screw bolt. The safety lever can in particular comprise metal. Additionally or alternatively, the safety lever has a transverse extent and / or a longitudinal extent, wherein the longitudinal extent is preferably greater than the transverse extent. A thickness of the safety lever can vary along a transverse extent and / or along a longitudinal extent. Finally, the safety lever can be designed to collide directly or indirectly with the first element upon rotation of the screw bolt. A collision region can be arranged on the safety lever, which is characterized in that, for example, the thickness of the safety lever is reinforced and / or a coefficient of friction in a collision region of the safety lever is increased and / or a coating protects a surface of the collision region.The holding structure is arranged in particular on at least one side surface of the safety lever, which is preferably arranged along the longitudinal extent of the safety lever. The holding structure can protrude from the safety lever parallel to the longitudinal axis of the screw bolt, in particular perpendicular to a safety lever plane. Additionally or alternatively, the holding structure can have a predefined contour. The holding structure can be designed to be bendable, in particular bendable by means of a tool. The holding structure secures the head, in particular in a form-fitting manner with respect to rotation relative to the safety lever. Thus, the holding structure of the safety lever preferably rests against the head of the connecting element in a rotationally secure manner in an assembled position. The holding structure can, for example, be a tab / lobe.The tab is preferably arranged with a first end on the locking lever and is shaped such that the retaining element rests against the screw bolt, in particular against a head and / or a nut of the screw bolt. The retaining element can additionally or alternatively have a second tab and / or a plurality of tabs.

[0015] The assembly can, for example, be a wheel suspension, preferably consisting of a wheel carrier as the first element and a control arm as the second element. The screw bolt can have a first end and a second end and has a length of 30 mm to 200 mm, in particular 70 mm to 150 mm. Additionally or alternatively, the screw bolt has a head, in particular at the second end. The head can be a standardized machine element. The screw bolt can be a threaded screw. The threaded screw can be a double and / or multi-edge screw, such as a hexagon flange screw and / or a hexagon screw and / or a Torx screw. Additionally or alternatively, the screw bolt can be a threaded rod. Finally, for example, at least one washer and / or a flat washer and / or a snap ring and / or at least one further screwing aid can be arranged on the screw bolt.The screw bolt, in particular, protrudes beyond the through-hole with its first end and beyond the sleeve with its second end. The locking lever is particularly preferably arranged at the second end of the screw bolt between the second element or sleeve and an underside of the head of the screw bolt.

[0016] In a preferred embodiment, the locking lever has a bore into which the screw bolt can be inserted. The bore can, in particular, have a clearance fit with the diameter of the screw bolt.

[0017] In one embodiment, the retaining element can be bent after inserting the screw element into a bore in the locking lever such that it rests against the head of the screw element. Additionally or alternatively, the locking lever has a slot into which the screw bolt can be inserted. The slot can, in particular, have a clearance fit with the diameter of the screw bolt. Advantageously, a retaining element can already be preformed, and a flange screw and / or a screw bolt with washer can be pushed laterally under the preformed retaining element using the slot.

[0018] In a further embodiment, the holding structure can be a tab arranged at least on one side of the safety lever. The tab can be at least singly bent. The tab can have a rectangular contour. Additionally or alternatively, the tab can have a rounded contour. The contour can in particular correspond to a shape of the first element and / or a shape of the second element and / or an area surrounding the assembly and / or the screw bolt. The tab can in particular have the same material thickness as the safety lever. The tab can be firmly connected to the safety lever. In one embodiment, the safety lever is a stamped part on which the at least one tab is arranged. The tab can, for example, be bent in a first direction using a tool so that it rests against a side surface of the head.The tab can additionally or alternatively bear against at least a second lateral surface of the head of the screw bolt. Finally, the tab can enclose the head of the screw bolt on at least three sides, for example on a first lateral contact surface of the screw bolt head and on a second lateral contact surface of the screw bolt head and on a third lateral contact surface of the screw bolt head. For this purpose, the tab can in particular be folded or bent at least twice, so that two or even three tabs or surfaces of a tab oriented at an angle to one another are present. Additionally or alternatively, a second tab can be arranged on the locking lever. The at least second tab can be arranged relative to the first tab with respect to the bore and / or with respect to the slot.The at least one tab can additionally or alternatively be arranged perpendicularly on a surface of the safety lever, which is defined by the transverse extension and the longitudinal extension of the safety lever. The same considerations apply to the shape of the second tab as to the first, which is why reference is made to the above explanations. The tab and / or the tabs are preferably designed such that the head, in particular at least one side surface of the head, and the tab or tabs bear closely against one another in an assembly position to prevent rotation of the head.

[0019] The safety lever rests in particular in a cutout of the first element. The cutout can in particular have two opposing support surfaces for the safety lever, which prevent rotation in both directions. The distance between the support surfaces can be selected such that rotation is possible within a tolerance range. Additionally or alternatively, the cutout can be a through hole. Finally, the cutout can be a blind hole. Additionally or alternatively, the cutout can be recessed and / or produced by milling. Finally, the safety lever can rest against a support surface of the first element. The support surface can be oriented substantially perpendicular to the safety lever. A contact surface of the safety lever on the first element can have a coating and / or a predefined surface property, for example roughness.By means of the safety lever being in contact with the cutout, in particular a direct collision is created between the safety lever and the first element. The first element and / or the second element and / or the safety lever can additionally or alternatively be coated and / or arranged in a housing and / or separated from one another or mounted on one another or operatively connected to one another by a further part. By means of the collision of a further part connected to the safety lever with the first support surface of the first element upon rotation of the screw bolt, in particular an indirect collision of the safety lever with the first element is achieved. The collision can occur in particular directly in response to an angular change of the screw bolt if the safety lever bears directly or operatively against the first element in a rotationally secure manner.Additionally or alternatively, the collision may occur after a time delay in response to a change in the angle of the screw bolt, in particular when the screw bolt is rotated until a collision angle is reached.

[0020] In a preferred embodiment, the safety lever is a stamped part. Additionally or alternatively, the safety lever can be flat. Additionally or alternatively, the safety lever can be simply bent, for example, L-shaped.

[0021] Finally, the safety lever can be folded multiple times, for example in a Z-shape.

[0022] A hollow cylindrical rubber bearing and / or ball joint and / or plain bearing with a first outer diameter can be arranged on the second element. The rubber bearing can in particular be fitted / pressed into the second element. Additionally or alternatively, a material connection can be established between the rubber bearing and the second element. The rubber bearing in particular rests against the second element with an outer wall. The rubber bearing can at least partially enclose a sleeve with an inner wall. The screw bolt of the assembly can in particular be inserted into the sleeve in an assembled position and protrude through it in the screw bolt's longitudinal axis. A longitudinal extension of the safety lever can in particular be greater than the first outer diameter. In the event of a fracture between the rubber bearing and the second element, the rubber bearing cannot slip over the screw bolt with safety lever.Thus, in the event of a break between the rubber bearing and the second element, although technical functionality is limited, a secure connection between the first element and the second element is nevertheless advantageously provided.

[0023] The longitudinal extent of the safety lever can be, for example, 20 mm to 90 mm, in particular 50 mm to 80 mm. The transverse extent of the safety lever can be, in particular, 10 mm to 50 mm. The thickness of the safety lever can be, in particular, 1 mm to 5 mm, in particular 2 mm to 3 mm.

[0024] The second element of the assembly can be an axle guide, e.g., a track control arm, a wishbone, a camber control arm, etc. Additionally or alternatively, the first element of the assembly can be a wheel carrier. Finally, the first element can, in particular, be an axle carrier. The axle carrier or wheel carrier connected to the wishbone can, in particular, be an element of a wheel suspension for a wheel of a means of transport. The wheel suspension can, in particular, be an element of a chassis. In other words, the wheel suspension represents a connection between a wheel contact surface and the means of transport and transmits all forces and movements from the wheel to a structure of the means of transport.

[0025] The head of the bolt can, for example, be double-headed and / or multi-headed. Additionally or alternatively, the head can be a hexagon nut.

[0026] According to a second aspect of the present invention, a means of transportation comprising an assembly with a safety lever according to the invention is proposed. The means of transportation can, in particular, be a motor vehicle, such as a car, van, truck, aircraft, and / or watercraft. The features, combinations of features, and the resulting advantages correspond to those explained in connection with the first aspect of the invention, so that reference is made to the above statements to avoid repetition.

[0027] According to a third aspect of the present invention, a method for fastening a first element to a second element, which is movably mounted relative to the first element, using an assembly according to the invention is proposed. In a first step of the method according to the invention, the screw bolt is inserted into the locking lever, and in a second step, the head is positively secured by the holding structure. In a third step, the first element and the second element are connected to the screw bolt by means of a fastening element, such that the screw bolt extends through the locking lever, the first element, and the second element, and the locking lever collides with the first element when the screw bolt is rotated.For the third aspect, too, the features, combinations of features and the advantages resulting from them correspond to those explained in connection with the first-mentioned aspect of the invention in such a way that, in order to avoid repetition, reference is made to the above explanations.

[0028] Further details, features, and advantages of the invention will become apparent from the following description and the figures. They show: Fig. 1 a schematic view of a first assembly with a safety lever according to the invention, Fig. 2 a schematic view of a second assembly with a slotted safety lever according to the invention, Fig. 3 a schematic view of a third assembly with a safety lever according to the invention, Fig. 4 a schematic view of a fourth assembly with a curved safety lever according to the invention and Fig. 5 a flowchart of a method according to the invention for producing an assembly with a safety lever according to the invention.

[0029] The Fig. 1 shows a first wheel carrier 1 as the first element with a cutout 8, wherein the first wheel carrier 1 is connected to a control arm 2 as the second element. A hexagon screw 4 as a screw bolt has a hexagon screw head 5, on which a washer 9 and a lock washer 3 are arranged as a locking lever. A first tab 6 and a second tab 7 are arranged on the lock washer 3 as a holding structure. To assemble the hexagon screw 4 with the lock washer 3, the washer 9 is arranged by a fitter on the hole in the lock washer 3 and the hexagon screw 4 is then guided through the washer 9 and the lock washer 3.To connect the first wheel carrier 1 to the control arm 2, the thus assembled first subsystem is inserted through a sleeve on the control arm 2 and a hole in the wheel carrier 1 until the lock washer 3 rests against the control arm 2 and is secured with a nut (not shown) on the side of the hexagon screw 4 opposite the hexagon screw head 5. The first tab 6 rests against the first contact surface A, which is a side surface of the hexagon screw head 5. In addition, the lock washer 3 rests with a second contact surface B and a third contact surface C in the cutout 8 of the first wheel carrier 1. The lock washer 3 thus secures the hexagon screw 4 against twisting about an axis of the hexagon screw 4 and against twisting relative to the first wheel carrier 1.

[0030] Fig. 2 shows a first wheel carrier 1 as the first element with the cutout 8, wherein the first wheel carrier 1 is connected to the control arm 2 as the second element. A hexagon flange screw 40 as a screw bolt has a hexagon flange screw head 50, on which a slotted lock washer 30 is arranged as a locking lever. A third tab 60 and a fourth tab 70 are arranged on the slotted lock washer 30 as a holding structure. To assemble the assembly, an installer arranges the hexagon flange screw 40 on the slotted lock washer 30 and inserts the hexagon flange screw 40 into the slot of the slotted lock washer 30.To connect the first wheel carrier 1 to the control arm 2, the second subsystem assembled in this way is guided through a sleeve on the control arm 2 and a bore in the first wheel carrier 1 and secured with a nut (not shown) on the side of the hexagon flange screw 40 opposite the hexagon flange screw head 50. The third tab 60 bears against the fourth contact surface D, which is a side surface of the hexagon flange screw head 50. Furthermore, the lock washer 30 rests in the cutout 8 of the first wheel carrier 1. Thus, the slotted lock washer 30 secures the hexagon flange screw 40 against rotation about an axis of the hexagon flange screw 40 and against rotation relative to the first wheel carrier 1.

[0031] The Fig. 3 shows a second wheel carrier 1' as the first element and a control arm 2 as the second element. A hexagon screw 4 as a screw bolt has the hexagon screw head 5, on which a washer 9 and a lock washer 3 are arranged as a locking lever. A first tab 6 and a second tab 7 are arranged on the lock washer 3 as a holding structure. The first tab 6 rests on the first contact surface A of the hexagon screw head 5. In addition, the lock washer 3 rests on the second wheel carrier 1' with a fifth contact surface E and a sixth contact surface F. The lock washer 3 thus secures the hexagon screw 4 against rotation about an axis of the hexagon screw 4 and against rotation relative to the second wheel carrier 1'.

[0032] The Fig. 4 shows a third wheel carrier 1" as the first element with a second cutout 80, which is connected to a link 2 as the second element. The third wheel carrier 1" is arranged recessed relative to the link 2.

[0033] A hexagon screw 4 as a screw bolt has a hexagon screw head 5, on which a washer 9 and a folded lock washer 300 are arranged as a locking lever. A fifth tab 600 and a sixth tab 700 are arranged on the folded lock washer 300 as a holding structure. The fifth tab 600 rests against a side surface of the hexagon screw head 5. In addition, the folded lock washer 300 rests in the second cutout 80 of the third wheel carrier 1''. The mounted folded lock washer 300 secures the hexagon screw 4 against rotation about an axis of the hexagon screw 4 and against rotation relative to the third wheel carrier 1''.

[0034] In Fig. 4 shows the steps of a method for fastening a handlebar as a second element and a wheel carrier as a first element with a screw bolt and a locking lever with a holding structure as an assembly. In a first step 1000, the screw bolt is inserted into the locking lever. Subsequently, in a second step 2000, a head of the screw bolt is positively secured by the holding structure. In a third step 3000, the handlebar and the wheel carrier are connected with the screw bolt, so that the screw bolt extends through the locking lever, the first element, and the second element, and the locking lever collides with the wheel carrier when the screw bolt is rotated. List of reference symbols: 1 first wheel carrier 1' second wheel carrier 1" third wheel carrier 2 handlebars 3 Lock washer 4 hexagon screw 5 hexagon screw head 6 first tab 7 second tab 8 Excerpt 9 Washer 30 slotted lock washer 40 hexagon flange screw 50 hexagon flange screw head 60 third tab 70 fourth tab 80 second excerpt 300 folded lock washer A first contact surface B second contact surface C third contact surface D fourth contact surface QUOTES CONTAINED IN THE DESCRIPTION

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

[0000] DE 10 2018 109 703 A1

[0007] DE 10 2019 121 772 A1

[0008] DE 10 2011 007 831 A1

[0009]

Claims

[1] Assembly for fastening a first element (1, 1', 1") to a second element (2) which is movably mounted relative to the first element (1, 1', 1"), the assembly comprising: • a screw bolt (4, 40) with a head (5, 50) and • a safety lever (3, 30, 300) detachably connected to the screw bolt (4, 40) with a holding structure (6, 60, 600, 7, 70, 700), wherein • the screw bolt (4, 40) is designed to pass through the safety lever (3, 30, 300), the first element (1, 1', 1") and the second element (2), • the safety lever (3, 30, 300) is designed to be pressed against the second element (2) by means of the head (5, 50) and • the holding structure (6, 60, 600, 7, 70, 700) secures the head (5, 50) in a form-fitting manner with respect to rotation relative to the safety lever (3, 30, 300) and • the safety lever (3, 30, 300) is designed to collide directly or indirectly with the first element (1, 1', 1") when the screw bolt (4, 40) is rotated. [2] Assembly according to claim 1, wherein the safety lever (3, 30, 300) has a bore and / or a slot into which the screw bolt (4, 40) can be inserted. [3] Assembly according to claim 1 or 2, wherein the holding structure (6, 60, 600, 7, 70, 700) is a tab arranged at least on one side of the safety lever (3, 30, 300), which - on a first side surface of the head (5, 50) of the screw bolt (4, 40) and / or - rests against the first side surface of the head (5, 50) of the screw bolt (4, 40) and against at least one second side surface of the head (5, 50) of the screw bolt (4, 40) and / or - encloses the head (5, 50) of the screw bolt (4, 40) on at least three sides. [4] Assembly according to one of the preceding claims, wherein the safety lever (3, 30, 300) • in a cutout (8, 80) of the first element (1, 1', 1") and / or • rests on a support surface (E, F) of the first element (1, 1', 1"). [5] Assembly according to one of the preceding claims, wherein the safety lever (3, 30, 300) is a stamped part and / or • plan and / or • simply folded and / or • is folded several times. [6] Assembly according to one of the preceding claims, further comprising a particularly hollow-cylindrical rubber bearing with a first outer diameter, which is fitted into the second element (2) and at least partially encloses a sleeve with an inner wall, wherein a longitudinal extent of the safety lever (3, 30, 300) is greater than the first outer diameter. [7] Assembly according to one of the preceding claims, wherein the longitudinal extent of the safety lever (3, 30, 300) is 20 mm to 90 mm, in particular 50 mm to 80 mm, and / or a thickness of the safety lever (3, 30, 300) is 1 mm to 5 mm, in particular 2 mm to 3 mm. [8] Assembly according to one of the preceding claims, wherein the second element (2) of the assembly is a wishbone and the first element (1, 1', 1") of the assembly • a wheel carrier and / or • is an axle carrier. [9] Assembly according to one of the preceding claims, wherein the head (5, 50) is a hexagon head and / or a hexagon nut. [10] Means of locomotion comprising an assembly according to one of claims 1-9. [11] Method for fastening the first element (1, 1', 1") to the second element (2) which is movably mounted relative to the first element (1, 1', 1"), using an assembly according to one of claims 1-9, comprising the steps: • Insertion (1000) of the screw bolt into the safety lever (3, 30, 300), • positive securing (2000) of the head (5, 50) by the holding structure (6, 60, 600, 7, 70, 700), • Connecting (3000) the first element (1, 1', 1") and the second element (2) with the screw bolt (4, 40) so that the screw bolt (4, 40) extends through the safety lever (3, 30, 300), the first element (1, 1', 1") and the second element (2) and the safety lever (3, 30, 300) collides with the first element (1, 1', 1") when the screw bolt (4, 40) is rotated.

Images